ATcT [1, 2] enthalpies of formation based on version 1.202 of the Thermochemical Network [3]

Below is a list of 0 K and 298.15 K enthalpies of formation for all 3384 species included in version This version of ATcT results[3] was generated by additional expansion of version 1.176 in order to include species related to the thermochemistry of glycine[4].

The elements in their standard states are listed first; the listing order of the other species follows the actual order from the ATcT solution file, which roughly reflects the number of thermochemically-relevant determinations that include the species in question (highest first). The intent is to convey a very approximate indication of the robustness of the listed values, which is generally higher toward the top of the list and lower toward the bottom.

For species other than elements in their standard states, the Species Name acts as a link to the page itemizing the most important contributors to the provenance of its ATcT enthalpy of formation, other highly correlated chemical species, and high-leverage reactions in the Thermochemical Network.
(Please note that, as opposed to traditional sequential thermochemistry where the provenance of a given enthalpy of formation is typically a single measurement, the provenances of ATcT enthalpies of formation, which are obtained by analysing and solving a large Thermochemical Network, are normally quite distributed.)

Species:

(chemical formulas are case sensitive)

Exact Matches only:

Website functionality credits

The stoichiometry represents fractions as decimals,
e.g. 0.5 O2, 1 H2, 1 H2O would represent
1/2 O2 + H2 → H2O

Species Name	Image	Δ_fH°(0 K)	Δ_fH°(298.15 K)	Uncertainty	Units	Relative Molecular Mass	ATcT ID
Dihydrogen		0	0	exact		2.01588 ± 0.00014	1333-74-0*0
Helium		0	0	exact		4.0026020 ± 0.0000020	7440-59-7*0
Carbon		0	0	exact		12.01070 ± 0.00080	7440-44-0*500
Dinitrogen		0	0	exact		28.01348 ± 0.00014	7727-37-9*0
Dioxygen		0	0	exact		31.99880 ± 0.00060	7782-44-7*0
Difluorine		0	0	exact		37.9968064 ± 0.0000010	7782-41-4*0
Neon		0	0	exact		20.17970 ± 0.00060	7440-01-9*0
Silicon		0	0	exact		28.08550 ± 0.00030	7440-21-3*500
Sulfur		0	0	exact		32.0660 ± 0.0060	7704-34-9*500
Dichlorine		0	0	exact		70.9054 ± 0.0018	7782-50-5*0
Argon		0	0	exact		39.94800 ± 0.00100	7440-37-1*0
Dibromine		0	0	exact		159.8080 ± 0.0020	7726-95-6*500
Krypton		0	0	exact		83.8000 ± 0.1000	7439-90-9*0
Diiodine		0	0	exact		253.808940 ± 0.000060	7553-56-2*500
Xenon		0	0	exact		131.2900 ± 0.0200	7440-63-3*0
Platinum		0	0	exact		195.0780 ± 0.0020	7440-06-4*500
Radon		0	0	exact		222.0000 ± 0.1000	10043-92-2*0
Deuterium molecule		0	0	exact		4.02820355600 ± 0.00000000080	7782-39-0*0
Hydrogen atom		216.034	217.998	± 0.000	kJ/mol	1.007940 ± 0.000070	12385-13-6*0
Carbon		711.393	716.878	± 0.040	kJ/mol	12.01070 ± 0.00080	7440-44-0*0
Oxygen atom		246.844	249.229	± 0.0021	kJ/mol	15.99940 ± 0.00030	17778-80-2*0
Methane		-66.540	-74.510	± 0.043	kJ/mol	16.04246 ± 0.00085	74-82-8*0
Water		-286.273	-285.801	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*500
Nitrogen atom		470.582	472.445	± 0.022	kJ/mol	14.006740 ± 0.000070	17778-88-0*0
Carbon dioxide		-393.111	-393.477	± 0.015	kJ/mol	44.00950 ± 0.00100	124-38-9*0
Hydron		1528.084	1530.047	± 0.000	kJ/mol	1.007391 ± 0.000070	12408-02-5*0
Water		-238.903	-241.806	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*0
Ethane		-68.39	-84.01	± 0.12	kJ/mol	30.0690 ± 0.0017	74-84-0*0
Chlorine atom		119.621	121.302	± 0.0011	kJ/mol	35.45270 ± 0.00090	22537-15-1*0
Fluorine atom		77.254	79.360	± 0.017	kJ/mol	18.99840320 ± 0.00000050	14762-94-8*0
Ethylene		60.91	52.40	± 0.11	kJ/mol	28.0532 ± 0.0016	74-85-1*0
Propane		-82.71	-104.99	± 0.15	kJ/mol	44.0956 ± 0.0025	74-98-6*0
Methyl		149.883	146.482	± 0.049	kJ/mol	15.03452 ± 0.00083	2229-07-4*0
Methanol		-189.96	-200.84	± 0.14	kJ/mol	32.04186 ± 0.00090	67-56-1*0
Ammonia		-38.563	-45.556	± 0.029	kJ/mol	17.03056 ± 0.00022	7664-41-7*0
Bromine atom		117.925	111.863	± 0.055	kJ/mol	79.90400 ± 0.00100	10097-32-2*0
Hydroxyl		37.278	37.517	± 0.022	kJ/mol	17.00734 ± 0.00031	3352-57-6*0
Formaldehyde		-105.380	-109.220	± 0.094	kJ/mol	30.02598 ± 0.00087	50-00-0*0
Acetylene		228.89	228.34	± 0.12	kJ/mol	26.0373 ± 0.0016	74-86-2*0
Ethanol		-217.17	-234.89	± 0.19	kJ/mol	46.0684 ± 0.0017	64-17-5*0
Carbon monoxide		-113.799	-110.518	± 0.026	kJ/mol	28.01010 ± 0.00085	630-08-0*0
Hydrogen chloride		-91.988	-92.172	± 0.0062	kJ/mol	36.46064 ± 0.00090	7647-01-0*0
Benzene		100.70	83.19	± 0.21	kJ/mol	78.1118 ± 0.0048	71-43-2*0
Iodine		107.157	106.757	± 0.0021	kJ/mol	126.904470 ± 0.000030	14362-44-8*0
Propene		34.92	20.08	± 0.18	kJ/mol	42.0797 ± 0.0024	115-07-1*0
Hydrogen fluoride		-272.679	-272.726	± 0.018	kJ/mol	20.006343 ± 0.000070	7664-39-3*0
Ethyl		131.52	120.77	± 0.20	kJ/mol	29.0611 ± 0.0016	2025-56-1*0
Hydrogen cyanide		129.688	129.303	± 0.087	kJ/mol	27.02538 ± 0.00081	74-90-8*0
Hydrogen bromide		-27.51	-35.36	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*0
Nitric oxide		90.622	91.126	± 0.064	kJ/mol	30.00614 ± 0.00031	10102-43-9*0
Methylamine		-6.45	-21.16	± 0.22	kJ/mol	31.05714 ± 0.00088	74-89-5*0
Acetaldehyde		-154.86	-165.39	± 0.22	kJ/mol	44.0526 ± 0.0017	75-07-0*0
Propyne		192.73	185.58	± 0.20	kJ/mol	40.0639 ± 0.0024	74-99-7*0
Chloromethane		-74.65	-82.58	± 0.17	kJ/mol	50.4872 ± 0.0012	74-87-3*0
Acetone		-199.92	-216.87	± 0.26	kJ/mol	58.0791 ± 0.0025	67-64-1*0
Silicon		450.34	454.68	± 0.56	kJ/mol	28.08550 ± 0.00030	7440-21-3*0
Dioxidanyl		15.07	12.16	± 0.14	kJ/mol	33.00674 ± 0.00060	3170-83-0*0
Hydrogen iodide		28.646	26.471	± 0.036	kJ/mol	127.912410 ± 0.000076	10034-85-2*0
Hydroxyde		-139.064	-139.030	± 0.022	kJ/mol	17.00789 ± 0.00031	14280-30-9*0
Allene		197.50	190.04	± 0.22	kJ/mol	40.0639 ± 0.0024	463-49-0*0
Nitrogen dioxide		36.861	34.054	± 0.064	kJ/mol	46.00554 ± 0.00060	10102-44-0*0
Vinyl		301.26	297.22	± 0.27	kJ/mol	27.0452 ± 0.0016	2669-89-8*0
Methylene		391.076	391.622	± 0.094	kJ/mol	14.02658 ± 0.00081	2465-56-7*1
Hydrogen peroxide		-129.418	-135.404	± 0.058	kJ/mol	34.01468 ± 0.00062	7722-84-1*0
Fluoromethane		-227.44	-235.47	± 0.24	kJ/mol	34.03292 ± 0.00083	593-53-3*0
n-Butane		-98.22	-125.53	± 0.19	kJ/mol	58.1222 ± 0.0033	106-97-8*0
Toluene		73.37	50.08	± 0.31	kJ/mol	92.1384 ± 0.0056	108-88-3*0
Silane		42.66	33.04	± 0.63	kJ/mol	32.11726 ± 0.00041	7803-62-5*0
Methylene		428.74	429.15	± 0.11	kJ/mol	14.02658 ± 0.00081	2465-56-7*2
Ozone		144.407	141.744	± 0.039	kJ/mol	47.99820 ± 0.00090	10028-15-6*0
1,3-Butadiene		125.64	111.17	± 0.29	kJ/mol	54.0904 ± 0.0032	106-99-0*0
Acetic acid		-418.43	-432.59	± 0.32	kJ/mol	60.0520 ± 0.0017	64-19-7*1
Fluoride		-250.911	-249.126	± 0.017	kJ/mol	18.99895178 ± 0.00000050	16984-48-8*0
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*839
Ketene		-45.33	-48.39	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*0
Nitrilomethyl		436.73	440.02	± 0.14	kJ/mol	26.01744 ± 0.00080	2074-87-5*0
Bromomethane		-20.45	-35.85	± 0.19	kJ/mol	94.9385 ± 0.0013	74-83-9*0
Methoxy		28.98	21.61	± 0.26	kJ/mol	31.03392 ± 0.00088	2143-68-2*0
Formic acid		-370.98	-378.30	± 0.20	kJ/mol	46.0254 ± 0.0010	64-18-6*1
Ethylamine		-28.02	-49.79	± 0.42	kJ/mol	45.0837 ± 0.0017	75-04-7*0
Phenyl		352.64	339.28	± 0.60	kJ/mol	77.1039 ± 0.0048	2396-01-2*0
Hydrogen chloride			-165.756	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*828
Acetonitrile		81.15	74.08	± 0.23	kJ/mol	41.0520 ± 0.0016	75-05-8*0
Hydroxymethyl		-10.10	-16.41	± 0.28	kJ/mol	31.03392 ± 0.00088	2597-43-5*0
Sulfur dioxide		-294.20	-296.74	± 0.13	kJ/mol	64.0648 ± 0.0060	7446-09-5*0
Hydrogen iodide			-56.640	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*844
Hydrogen fluoride			-303.199	± 0.099	kJ/mol	20.006343 ± 0.000070	7664-39-3*590
Methoxide		-122.41	-130.13	± 0.26	kJ/mol	31.03447 ± 0.00088	3315-60-4*0
Propargyl		354.11	351.52	± 0.31	kJ/mol	39.0559 ± 0.0024	2932-78-7*0
iso-Butane		-105.87	-134.47	± 0.27	kJ/mol	58.1222 ± 0.0033	75-28-5*0
Acetic acid			-484.65	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*828
Hypochlorous acid		-73.840	-76.780	± 0.024	kJ/mol	52.46004 ± 0.00095	7790-92-3*0
Hydrogen bromide			-120.25	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*842
Ethynyl		563.76	567.87	± 0.15	kJ/mol	25.0293 ± 0.0016	2122-48-7*0
Formic acid			-425.26	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*828
Amidogen		188.92	186.03	± 0.11	kJ/mol	16.02262 ± 0.00016	13770-40-6*0
Tetrafluoromethane		-927.63	-933.60	± 0.23	kJ/mol	88.00431 ± 0.00080	75-73-0*0
Formyl		41.390	41.764	± 0.094	kJ/mol	29.01804 ± 0.00086	2597-44-6*0
Formamide		-178.64	-189.00	± 0.34	kJ/mol	45.04066 ± 0.00088	75-12-7*0
n-Propyl		118.47	101.07	± 0.39	kJ/mol	43.0877 ± 0.0024	2143-61-5*0
Cyclopropane		71.07	53.95	± 0.32	kJ/mol	42.0797 ± 0.0024	75-19-4*0
Cyclopentadiene		151.90	134.78	± 0.49	kJ/mol	66.1011 ± 0.0040	542-92-7*0
Dibromine		45.70	30.90	± 0.11	kJ/mol	159.8080 ± 0.0020	7726-95-6*0
Diiodine		65.497	62.417	± 0.0041	kJ/mol	253.808940 ± 0.000060	7553-56-2*0
iso-Propyl		105.68	88.81	± 0.38	kJ/mol	43.0877 ± 0.0024	2025-55-0*0
Ethenol		-113.27	-124.40	± 0.37	kJ/mol	44.0526 ± 0.0017	557-75-5*1
Allyl		179.92	168.20	± 0.33	kJ/mol	41.0718 ± 0.0024	1981-80-2*0
Acetyl		-3.60	-10.17	± 0.29	kJ/mol	43.0446 ± 0.0016	3170-69-2*0
Chloroethane		-96.94	-111.53	± 0.25	kJ/mol	64.5138 ± 0.0019	75-00-3*0
Chloride		-228.953	-227.346	± 0.0021	kJ/mol	35.45325 ± 0.00090	16887-00-6*0
Methoxymethane		-166.39	-183.89	± 0.35	kJ/mol	46.0684 ± 0.0017	115-10-6*0
Dioxymethyl	$[O-]\[O+]=C$	112.11	105.11	± 0.33	kJ/mol	46.0254 ± 0.0010	56077-92-0*0
Methanimine		96.39	88.48	± 0.34	kJ/mol	29.04126 ± 0.00083	2053-29-4*0
Ethylium		915.19	903.11	± 0.29	kJ/mol	29.0606 ± 0.0016	14936-94-8*0
Fluoroform		-689.28	-696.23	± 0.40	kJ/mol	70.01385 ± 0.00080	75-46-7*0
Oxomethylium		827.766	827.182	± 0.094	kJ/mol	29.01749 ± 0.00086	17030-74-9*0
Trifluoromethyl		-465.14	-467.94	± 0.42	kJ/mol	69.00591 ± 0.00080	2264-21-3*0
Methylidyne		592.977	596.311	± 0.081	kJ/mol	13.01864 ± 0.00080	3315-37-5*0
Methyl hydroperoxide		-114.82	-127.64	± 0.42	kJ/mol	48.0413 ± 0.0010	3031-73-0*0
Phenol		-74.34	-92.93	± 0.62	kJ/mol	94.1112 ± 0.0048	108-95-2*0
Tetrachloromethane		-89.28	-91.45	± 0.41	kJ/mol	153.8215 ± 0.0037	56-23-5*0
Benzaldehyde		-19.16	-36.95	± 0.68	kJ/mol	106.1219 ± 0.0056	100-52-7*0
Bromide		-206.612	-212.674	± 0.055	kJ/mol	79.90455 ± 0.00100	24959-67-9*0
Hypobromous acid		-51.27	-61.74	± 0.48	kJ/mol	96.9113 ± 0.0010	13517-11-8*0
Iodomethane		24.53	14.99	± 0.16	kJ/mol	141.93899 ± 0.00083	74-88-4*0
Methylperoxy		22.56	13.11	± 0.34	kJ/mol	47.0333 ± 0.0010	2143-58-0*0
Oxonium		605.89	599.14	± 0.17	kJ/mol	19.02267 ± 0.00037	13968-08-6*0
Cyanoacetylene		372.26	374.00	± 0.57	kJ/mol	51.0468 ± 0.0024	1070-71-9*0
Chlorooxidanyl		101.124	101.716	± 0.035	kJ/mol	51.45210 ± 0.00095	14989-30-1*0
Iodide		-187.996	-188.396	± 0.0021	kJ/mol	126.905019 ± 0.000030	20461-54-5*0
Nitric acid		-124.42	-134.13	± 0.17	kJ/mol	63.01288 ± 0.00091	7697-37-2*0
Hydroxyformyl		-181.14	-184.10	± 0.40	kJ/mol	45.0174 ± 0.0010	2564-86-5*1
Vinyl chloride		29.41	21.82	± 0.27	kJ/mol	62.4979 ± 0.0018	75-01-4*0
Glycine		-377.67	-396.14	± 0.55	kJ/mol	75.0666 ± 0.0017	56-40-6*1
Ammonium		643.01	631.70	± 0.20	kJ/mol	18.03795 ± 0.00029	14798-03-9*0
Imidogen		358.75	358.80	± 0.16	kJ/mol	15.014680 ± 0.000099	13774-92-0*0
1-Hydroxyethyl		-42.70	-56.13	± 0.46	kJ/mol	45.0605 ± 0.0017	2348-46-1*1
Dimethylamine		4.66	-16.98	± 0.45	kJ/mol	45.0837 ± 0.0017	124-40-3*0
Vinylacetylene		296.48	289.72	± 0.52	kJ/mol	52.0746 ± 0.0032	689-97-4*0
Sulfur trioxide		-389.75	-395.50	± 0.24	kJ/mol	80.0642 ± 0.0061	7446-11-9*0
Oxirane		-39.72	-52.27	± 0.33	kJ/mol	44.0526 ± 0.0017	75-21-8*0
Ethoxide		-163.74	-178.68	± 0.44	kJ/mol	45.0610 ± 0.0017	16331-64-9*0
Oxygen atom anion		105.868	108.096	± 0.0021	kJ/mol	15.99995 ± 0.00030	14337-01-0*0
1,3-Butadiyne		458.40	460.13	± 0.48	kJ/mol	50.0587 ± 0.0032	460-12-8*0
Methylium		1099.355	1095.412	± 0.045	kJ/mol	15.03397 ± 0.00083	14531-53-4*0
Isocyanic acid		-115.93	-118.93	± 0.28	kJ/mol	43.02478 ± 0.00086	75-13-8*0
Cyanamide		141.62	135.60	± 0.78	kJ/mol	42.04006 ± 0.00082	420-04-2*0
Difluorophosgene		-603.34	-606.44	± 0.40	kJ/mol	66.00691 ± 0.00085	353-50-4*0
Hypofluorous acid		-84.38	-87.28	± 0.19	kJ/mol	36.00574 ± 0.00031	14034-79-8*0
Nitric acid			-206.20	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*839
Isobutene		4.31	-16.75	± 0.32	kJ/mol	56.1063 ± 0.0032	115-11-7*0
2-Hydroxyethyl		-12.87	-26.13	± 0.48	kJ/mol	45.0605 ± 0.0017	4422-54-2*1
N-Methylenemethanamine		94.61	79.69	± 0.67	kJ/mol	43.0678 ± 0.0016	1761-67-7*0
Dichloromethane		-86.84	-93.70	± 0.33	kJ/mol	84.9320 ± 0.0020	75-09-2*0
Chlorobenzene		67.28	52.32	± 0.61	kJ/mol	112.5566 ± 0.0049	108-90-7*0
Nitromethane		-60.58	-74.48	± 0.40	kJ/mol	61.0401 ± 0.0010	75-52-5*0
Sulfur		276.84	279.08	± 0.14	kJ/mol	32.0660 ± 0.0060	7704-34-9*0
Hydrogen chloride			-166.450	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*834
Methylamidogen		187.99	177.34	± 0.39	kJ/mol	30.04920 ± 0.00085	15622-51-2*0
Isocyanomethane		183.81	177.26	± 0.47	kJ/mol	41.0520 ± 0.0016	593-75-9*0
1,2-Butadiene		176.06	162.56	± 0.42	kJ/mol	54.0904 ± 0.0032	590-19-2*0
Benzyl		230.16	211.35	± 0.51	kJ/mol	91.1305 ± 0.0056	2154-56-5*0
Cyclopentadienyl		275.62	262.51	± 0.80	kJ/mol	65.0932 ± 0.0040	2143-53-5*0
Ethyl hydroperoxide		-142.47	-160.89	± 0.62	kJ/mol	62.0678 ± 0.0018	3031-74-1*0
Ethynide		277.32	280.73	± 0.19	kJ/mol	25.0299 ± 0.0016	29075-95-4*0
Trimethylsilane		-125.8	-151.9	± 1.5	kJ/mol	74.1970 ± 0.0025	993-07-7*0
Hydrogen sulfide		-17.36	-20.29	± 0.18	kJ/mol	34.0819 ± 0.0060	7783-06-4*0
Hydride		143.264	145.228	± 0.000	kJ/mol	1.008489 ± 0.000070	12184-88-2*0
Cyanogen chloride		135.14	135.84	± 0.43	kJ/mol	61.4701 ± 0.0012	506-77-4*0
Phenide		244.27	230.84	± 0.38	kJ/mol	77.1044 ± 0.0048	30922-78-2*0
Cyclopropene		292.60	283.87	± 0.41	kJ/mol	40.0639 ± 0.0024	2781-85-3*0
Formate		-463.10	-466.74	± 0.55	kJ/mol	45.0180 ± 0.0010	71-47-6*0
Methyl formate		-346.82	-359.87	± 0.61	kJ/mol	60.0520 ± 0.0017	107-31-3*1
Trihydrogen cation		1110.304	1106.696	± 0.013	kJ/mol	3.02327 ± 0.00021	28132-48-1*0
Fluoromethylidyne		243.17	246.78	± 0.11	kJ/mol	31.00910 ± 0.00080	3889-75-6*0
Acrolein		-55.11	-65.51	± 0.64	kJ/mol	56.0633 ± 0.0024	107-02-8*1
Sulfuric acid			-887.52	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*828
Tetrafluorosilane		-1608.76	-1614.27	± 0.52	kJ/mol	104.07911 ± 0.00030	7783-61-1*0
Oxygen atom cation		1560.786	1562.643	± 0.0021	kJ/mol	15.99885 ± 0.00030	14581-93-2*0
Nitrous acid		-72.988	-79.132	± 0.077	kJ/mol	47.01348 ± 0.00061	7782-77-6*1
Hydroxymethylium		717.75	709.81	± 0.18	kJ/mol	31.03337 ± 0.00088	18682-95-6*0
Cyanide		63.983	67.269	± 0.091	kJ/mol	26.01799 ± 0.00080	57-12-5*0
2-Butyne		159.59	146.62	± 0.45	kJ/mol	54.0904 ± 0.0032	503-17-3*0
Propynylidene		543.73	546.73	± 0.58	kJ/mol	38.0480 ± 0.0024	67152-18-5*1
Difluoromethane		-443.32	-450.93	± 0.35	kJ/mol	52.02339 ± 0.00081	75-10-5*0
Vinyl bromide		88.84	74.03	± 0.54	kJ/mol	106.9492 ± 0.0019	593-60-2*0
Silyl		204.71	199.23	± 0.80	kJ/mol	31.10932 ± 0.00037	13765-44-1*0
Sulfurous acid			-617.29	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*898
Oxygen difluoride		26.80	24.55	± 0.22	kJ/mol	53.99621 ± 0.00030	7783-41-7*0
Hypochlorite		-118.60	-118.33	± 0.13	kJ/mol	51.45265 ± 0.00095	14380-61-1*0
Hypoiodous acid		-53.6	-58.3	± 2.8	kJ/mol	143.91181 ± 0.00031	14332-21-9*0
Nitrosyl hydride		109.93	106.96	± 0.11	kJ/mol	31.01408 ± 0.00032	14332-28-6*0
Methylidyne		664.92	668.26	± 0.44	kJ/mol	13.01864 ± 0.00080	3315-37-5*2
Butatriene		328.44	322.18	± 0.53	kJ/mol	52.0746 ± 0.0032	2873-50-9*0
Ethoxy		1.39	-12.51	± 0.42	kJ/mol	45.0605 ± 0.0017	2154-50-9*51
Vinoxy		22.92	16.12	± 0.53	kJ/mol	43.0446 ± 0.0016	6912-06-7*0
Ethylperoxy		-6.09	-22.11	± 0.60	kJ/mol	61.0599 ± 0.0017	3170-61-4*3
Acetone enol		-151.24	-168.53	± 0.68	kJ/mol	58.0791 ± 0.0025	29456-04-0*1
Phosgene		-217.49	-219.18	± 0.24	kJ/mol	98.9155 ± 0.0020	75-44-5*0
1-Hydroxy-2-propanone		-354.40	-373.79	± 0.83	kJ/mol	74.0785 ± 0.0025	116-09-6*11
Cyanoamidogen		322.73	320.24	± 0.63	kJ/mol	41.03212 ± 0.00082	12347-01-2*1
Chloroform		-94.51	-99.42	± 0.39	kJ/mol	119.3767 ± 0.0028	67-66-3*0
Tetrafluoroethylene		-670.66	-674.06	± 0.47	kJ/mol	100.0150 ± 0.0016	116-14-3*0
Benzoyl		138.85	125.32	± 0.98	kJ/mol	105.1140 ± 0.0056	2652-65-5*0
Methyl nitrite		-54.33	-66.11	± 0.69	kJ/mol	61.0401 ± 0.0010	624-91-9*2
Acrylonitrile		194.02	187.26	± 0.60	kJ/mol	53.0627 ± 0.0024	107-13-1*1
Silanol		-271.0	-282.7	± 1.2	kJ/mol	48.11666 ± 0.00051	14475-38-8*0
Naphthalene		171.17	147.69	± 0.54	kJ/mol	128.1705 ± 0.0080	91-20-3*0
1,2-Propadiene-1,3-diylidene		814.40	823.36	± 0.49	kJ/mol	36.0321 ± 0.0024	12075-35-3*0
Vinyl anion		237.00	232.58	± 0.68	kJ/mol	27.0458 ± 0.0016	25012-81-1*0
Cyanogen bromide		186.8	180.2	± 1.4	kJ/mol	105.9214 ± 0.0013	506-68-3*0
n-Butyl		103.10	80.60	± 0.60	kJ/mol	57.1143 ± 0.0033	2492-36-6*0
neo-Pentane		-134.25	-167.12	± 0.38	kJ/mol	72.1488 ± 0.0041	463-82-1*0
trans-2-Butene		9.69	-10.88	± 0.28	kJ/mol	56.1063 ± 0.0032	624-64-6*0
1-Butene		21.24	0.29	± 0.33	kJ/mol	56.1063 ± 0.0032	106-98-9*0
n-Hexane		-129.89	-166.76	± 0.32	kJ/mol	86.1754 ± 0.0049	110-54-3*0
Vinyl hydroperoxide		-26.04	-38.32	± 0.69	kJ/mol	60.0520 ± 0.0017	66998-78-5*1
Propionaldehyde		-171.09	-186.50	± 0.20	kJ/mol	58.0791 ± 0.0025	123-38-6*0
Methyl acetate		-394.13	-413.00	± 0.56	kJ/mol	74.0785 ± 0.0025	79-20-9*1
Acetonyl		-18.39	-31.99	± 0.62	kJ/mol	57.0712 ± 0.0024	3122-07-4*0
Aziridine		143.58	127.05	± 0.85	kJ/mol	43.0678 ± 0.0016	151-56-4*0
Tetrabromomethane		144.80	115.10	± 0.73	kJ/mol	331.6267 ± 0.0041	558-13-4*0
Ethyl bromide		-40.97	-62.92	± 0.24	kJ/mol	108.9651 ± 0.0019	74-96-4*0
Propadienone		132.23	130.59	± 0.61	kJ/mol	54.0474 ± 0.0024	61244-93-7*0
Chlorine fluoride		-55.622	-55.717	± 0.030	kJ/mol	54.45110 ± 0.00090	7790-89-8*0
Diazynium		1042.57	1038.96	± 0.67	kJ/mol	29.02087 ± 0.00016	12357-66-3*0
Nitrite		-182.63	-185.44	± 0.46	kJ/mol	46.00609 ± 0.00060	14797-65-0*0
Hydroxylamine		-33.06	-43.44	± 0.42	kJ/mol	33.02996 ± 0.00037	7803-49-8*1
Vinylidene		411.24	412.15	± 0.30	kJ/mol	26.0373 ± 0.0016	2143-69-3*0
Aminomethyl		159.42	149.58	± 0.35	kJ/mol	30.04920 ± 0.00085	10507-29-6*0
cis-2-Butene	$C/C=C\C$	14.43	-6.84	± 0.38	kJ/mol	56.1063 ± 0.0032	590-18-1*0
1-Butyne		180.43	166.84	± 0.56	kJ/mol	54.0904 ± 0.0032	107-00-6*0
Formic acid		-370.98	-378.27	± 0.20	kJ/mol	46.0254 ± 0.0010	64-18-6*0
Acetate		-495.87	-505.00	± 0.76	kJ/mol	59.0446 ± 0.0017	71-50-1*0
Methanetetraylbisamidogen		451.40	451.81	± 0.40	kJ/mol	40.02418 ± 0.00081	2669-76-3*0
Bromoform		80.98	54.83	± 0.70	kJ/mol	252.7306 ± 0.0031	75-25-2*0
Vinyl fluoride		-134.50	-142.31	± 0.45	kJ/mol	46.0436 ± 0.0016	75-02-5*0
Phenylium		1149.32	1136.54	± 0.85	kJ/mol	77.1034 ± 0.0048	17333-73-2*0
Indene		183.80	159.91	± 0.72	kJ/mol	116.1598 ± 0.0072	95-13-6*0
Fluorobenzene		-96.04	-111.71	± 0.39	kJ/mol	96.1023 ± 0.0048	462-06-6*0
Ethyl nitrite		-79.93	-98.67	± 0.86	kJ/mol	75.0666 ± 0.0017	109-95-5*1
Fluorooxidanyl		110.28	110.90	± 0.14	kJ/mol	34.99780 ± 0.00030	12061-70-0*0
Nitrous oxide		86.020	82.591	± 0.096	kJ/mol	44.01288 ± 0.00033	10024-97-2*0
Azanide		114.65	111.77	± 0.29	kJ/mol	16.02317 ± 0.00016	17655-31-1*0
Methanium		922.03	911.78	± 0.44	kJ/mol	17.04985 ± 0.00087	15135-49-6*0
Peroxynitrous acid		-5.74	-14.18	± 0.35	kJ/mol	63.01288 ± 0.00091	14691-52-2*3
Ethylidene		361.31	354.30	± 0.48	kJ/mol	28.0532 ± 0.0016	4218-50-2*1
Ethylidene		373.66	366.43	± 0.56	kJ/mol	28.0532 ± 0.0016	4218-50-2*2
Aminomethylium		763.62	751.65	± 0.52	kJ/mol	30.04865 ± 0.00085	488821-23-4*0
Cyanomethyl		262.84	259.96	± 0.53	kJ/mol	40.0440 ± 0.0016	2932-82-3*0
Cyanic fluoride		8.49	8.82	± 0.74	kJ/mol	45.01584 ± 0.00080	1495-50-7*0
Propadienylidene		554.47	555.61	± 0.39	kJ/mol	38.0480 ± 0.0024	60731-10-4*0
t-Butyl		75.36	50.07	± 0.68	kJ/mol	57.1143 ± 0.0033	1605-73-8*0
n-Pentane		-114.16	-146.04	± 0.29	kJ/mol	72.1488 ± 0.0041	109-66-0*0
Methanediol		-378.49	-392.43	± 0.62	kJ/mol	48.0413 ± 0.0010	463-57-0*1
Formic acid		-354.65	-361.75	± 0.37	kJ/mol	46.0254 ± 0.0010	64-18-6*2
Cyanooxidanyl		126.96	127.44	± 0.33	kJ/mol	42.01684 ± 0.00086	22400-26-6*0
Acetic acid		-418.43	-432.59	± 0.32	kJ/mol	60.0520 ± 0.0017	64-19-7*0
Ethenamine		69.39	54.83	± 0.66	kJ/mol	43.0678 ± 0.0016	593-67-9*0
Fluoroethane		-257.24	-272.10	± 0.35	kJ/mol	48.0595 ± 0.0016	353-36-6*0
Chlorotrifluoromethane		-704.26	-709.37	± 0.56	kJ/mol	104.4586 ± 0.0012	75-72-9*0
Pyridine		157.34	140.53	± 0.40	kJ/mol	79.0999 ± 0.0040	110-86-1*0
Carbamoyl		-7.73	-14.14	± 0.72	kJ/mol	44.03272 ± 0.00087	2858-51-7*0
Acrylonitrile		194.02	187.26	± 0.60	kJ/mol	53.0627 ± 0.0024	107-13-1*0
1,2,3-Butatrien-1-yl		497.55	497.57	± 0.66	kJ/mol	51.0666 ± 0.0032	22112-56-7*0
Disilane		92.0	75.9	± 1.3	kJ/mol	62.21864 ± 0.00073	1590-87-0*0
2,4-Hexadiyne		380.37	370.34	± 0.82	kJ/mol	78.1118 ± 0.0048	2809-69-0*0
Bromooxidanyl		131.22	123.68	± 0.28	kJ/mol	95.9034 ± 0.0010	15656-19-6*0
Aminooxy		70.65	64.05	± 0.62	kJ/mol	32.02202 ± 0.00034	13408-29-2*0
Hydroxyamidogen		101.27	94.43	± 0.83	kJ/mol	32.02202 ± 0.00034	13940-32-4*1
Dioxygen cation		1164.585	1165.221	± 0.0092	kJ/mol	31.99825 ± 0.00060	12185-07-8*0
Ethynylene		819.984	828.450	± 0.085	kJ/mol	24.0214 ± 0.0016	12070-15-4*0
Ethanide		155.44	144.36	± 0.87	kJ/mol	29.0616 ± 0.0016	25013-41-6*0
Vinylium		1119.20	1115.75	± 0.52	kJ/mol	27.0447 ± 0.0016	14604-48-9*0
Hydroxymethylene		112.70	108.93	± 0.27	kJ/mol	30.02598 ± 0.00087	19710-56-6*1
Carbonic acid		-602.24	-612.42	± 0.55	kJ/mol	62.0248 ± 0.0012	463-79-6*1
Peroxyformic acid		-279.20	-288.55	± 0.63	kJ/mol	62.0248 ± 0.0012	107-32-4*1
1,2-Propadienyl anion		266.10	263.04	± 0.63	kJ/mol	39.0565 ± 0.0024	64066-06-4*0
1-Propanol		-231.13	-254.97	± 0.20	kJ/mol	60.0950 ± 0.0025	71-23-8*0
Cyclopentane		-43.37	-75.94	± 0.38	kJ/mol	70.1329 ± 0.0041	287-92-3*0
2-Ethylidenedioxidan-2-ium-1-ide		51.25	37.79	± 0.54	kJ/mol	60.0520 ± 0.0017	68941-70-8*2
Phenolate		-145.96	-161.42	± 0.81	kJ/mol	93.1038 ± 0.0048	3229-70-7*0
(1E)-Ethanimine		55.81	39.60	± 0.72	kJ/mol	43.0678 ± 0.0016	56003-81-7*0
Diazomethyl		467.86	465.31	± 0.68	kJ/mol	41.03212 ± 0.00082	20813-32-5*1
Bromotrifluoromethane		-638.62	-650.74	± 0.39	kJ/mol	148.9099 ± 0.0013	75-63-8*0
Tetrahedrane		547.73	539.32	± 0.91	kJ/mol	52.0746 ± 0.0032	157-39-1*0
Silylene		271.60	269.94	± 0.81	kJ/mol	30.10138 ± 0.00033	13825-90-6*2
Chlorine dioxide		101.42	98.95	± 0.29	kJ/mol	67.4515 ± 0.0011	10049-04-4*0
Hypobromite		-95.99	-103.47	± 0.53	kJ/mol	95.9039 ± 0.0010	14380-62-2*0
Nitrogen trifluoride		-125.84	-131.56	± 0.55	kJ/mol	71.001950 ± 0.000070	7783-54-2*0
(E)-Diazene		207.17	200.03	± 0.40	kJ/mol	30.02936 ± 0.00020	15626-43-4*0
(E)-Iminomethyl		275.80	272.19	± 0.56	kJ/mol	28.03332 ± 0.00082	54980-10-8*0
Cyanogen		308.19	310.14	± 0.41	kJ/mol	52.0349 ± 0.0016	460-19-5*0
Water			-285.801	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*590
Peroxyformyl		-100.40	-105.71	± 0.67	kJ/mol	61.0168 ± 0.0012	56240-83-6*1
1-Methylethenyl		263.05	252.65	± 0.61	kJ/mol	41.0718 ± 0.0024	15552-77-9*0
Cyclopentene		59.94	35.67	± 0.43	kJ/mol	68.1170 ± 0.0040	142-29-0*0
Trioxidane		-81.75	-90.59	± 0.40	kJ/mol	50.01408 ± 0.00091	14699-99-1*1
Dioxirane		9.43	1.76	± 0.37	kJ/mol	46.0254 ± 0.0010	157-26-6*0
Trimethylamine		2.70	-26.16	± 0.78	kJ/mol	59.1103 ± 0.0025	75-50-3*0
Diazomethane		273.63	267.36	± 0.86	kJ/mol	42.04006 ± 0.00082	334-88-3*0
Dichloromethylene		229.88	231.06	± 0.64	kJ/mol	82.9161 ± 0.0020	1605-72-7*2
Trifluoromethylium		409.81	406.60	± 0.41	kJ/mol	69.00536 ± 0.00080	18851-76-8*0
Glycine			-470.09	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*800
Methylketene		-54.10	-63.58	± 0.63	kJ/mol	56.0633 ± 0.0024	6004-44-0*0
Disilene		288.8	280.2	± 1.7	kJ/mol	60.20276 ± 0.00066	15435-77-5*2
1,3-Pentadiyne		418.20	413.98	± 0.65	kJ/mol	64.0853 ± 0.0040	4911-55-1*0
Disulfur		127.38	127.69	± 0.27	kJ/mol	64.1320 ± 0.0120	23550-45-0*0
Sulfuric acid		-811.88	-813.87	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*500
Dimethyl sulfide		-20.22	-36.74	± 0.35	kJ/mol	62.1350 ± 0.0062	75-18-3*0
Ozonide		-58.47	-60.83	± 0.21	kJ/mol	47.99875 ± 0.00090	12596-80-4*0
Azido radical		452.38	449.79	± 0.59	kJ/mol	42.02022 ± 0.00021	12596-60-0*0
Nitrosyl ion		984.490	984.485	± 0.064	kJ/mol	30.00559 ± 0.00031	14452-93-8*0
Hydroxyoxomethylium		600.71	597.63	± 0.43	kJ/mol	45.0169 ± 0.0010	638-71-1*0
Hydrazoic acid		297.99	291.69	± 0.48	kJ/mol	43.02816 ± 0.00022	7782-79-8*0
Difluorodioxidane		35.38	31.65	± 0.40	kJ/mol	69.99561 ± 0.00060	7783-44-0*0
Methylidyne		592.977	596.311	± 0.081	kJ/mol	13.01864 ± 0.00080	3315-37-5*1
Acetylium		666.71	659.42	± 0.42	kJ/mol	43.0441 ± 0.0016	15762-07-9*0
Hydrogen isocyanide		192.07	192.45	± 0.32	kJ/mol	27.02538 ± 0.00081	6914-07-4*0
Chloroacetylene		229.36	230.23	± 0.45	kJ/mol	60.4820 ± 0.0018	593-63-5*0
Fluoroacetylene		104.99	105.71	± 0.39	kJ/mol	44.0277 ± 0.0016	2713-09-9*0
iso-Propylium		822.99	805.91	± 0.23	kJ/mol	43.0871 ± 0.0024	19252-53-0*0
1-Propenyl		278.21	267.37	± 0.63	kJ/mol	41.0718 ± 0.0024	6067-68-1*2
1-Hydroxyethylium		608.90	594.48	± 0.37	kJ/mol	45.0600 ± 0.0017	18682-96-7*1
Ketenyl		177.11	178.20	± 0.54	kJ/mol	41.0287 ± 0.0016	51095-15-9*0
Ethynol		95.32	92.83	± 0.73	kJ/mol	42.0367 ± 0.0016	32038-79-2*2
Hydroxymethoxy		-159.58	-169.54	± 0.84	kJ/mol	47.0333 ± 0.0010	72144-78-6*3
1-Butanol		-244.49	-274.74	± 0.24	kJ/mol	74.1216 ± 0.0033	71-36-3*0
Acetic acid		-397.63	-412.04	± 0.50	kJ/mol	60.0520 ± 0.0017	64-19-7*2
Glycolaldehyde		-304.28	-317.55	± 0.89	kJ/mol	60.0520 ± 0.0017	141-46-8*11
Methyl formate		-326.6	-339.0	± 1.1	kJ/mol	60.0520 ± 0.0017	107-31-3*2
Glyoxal		-207.82	-213.46	± 0.54	kJ/mol	58.0361 ± 0.0017	107-22-2*1
(Methylamino)methyl		168.81	152.36	± 0.70	kJ/mol	44.0758 ± 0.0017	31277-24-4*0
Diazirinyl		491.09	487.70	± 0.96	kJ/mol	41.03212 ± 0.00082	69967-71-1*1
Diazirine		320.7	313.0	± 1.1	kJ/mol	42.04006 ± 0.00082	157-22-2*0
Trichloromethyl		73.79	73.31	± 0.84	kJ/mol	118.3688 ± 0.0028	3170-80-7*0
1,1-Dichloroethane		-120.15	-132.92	± 0.43	kJ/mol	98.9586 ± 0.0024	75-34-3*0
Dibromomethane		27.01	5.61	± 0.59	kJ/mol	173.8346 ± 0.0022	74-95-3*0
Bromobenzene		127.0	105.0	± 1.3	kJ/mol	157.0079 ± 0.0049	108-86-1*0
Phenylethene		169.91	148.57	± 0.51	kJ/mol	104.1491 ± 0.0064	100-42-5*0
Phenylacetylene		332.81	317.65	± 0.69	kJ/mol	102.1332 ± 0.0064	536-74-3*0
Phenoxy		71.50	56.22	± 0.81	kJ/mol	93.1033 ± 0.0048	2122-46-5*0
Dioxidanide		-88.92	-91.58	± 0.34	kJ/mol	33.00729 ± 0.00060	14691-59-9*0
Acetophenone		-60.71	-83.90	± 0.98	kJ/mol	120.1485 ± 0.0064	98-86-2*0
Hydroxyde			-229.757	± 0.023	kJ/mol	17.00789 ± 0.00031	14280-30-9*800
Nitrosomethane		80.95	71.04	± 0.91	kJ/mol	45.04066 ± 0.00088	865-40-7*0
Isocyanoacetylene		484.80	487.03	± 0.98	kJ/mol	51.0468 ± 0.0024	66723-45-3*0
Cyclobutadiene		436.58	428.12	± 0.63	kJ/mol	52.0746 ± 0.0032	1120-53-2*0
Fulvene		232.2	216.1	± 1.1	kJ/mol	78.1118 ± 0.0048	497-20-1*0
Disilanyl		242.4	230.4	± 1.5	kJ/mol	61.21070 ± 0.00069	73151-72-1*0
Silanone		-93.77	-99.12	± 0.99	kJ/mol	46.10078 ± 0.00045	22755-01-7*0
Silyloxy		8.5	0.6	± 1.4	kJ/mol	47.10872 ± 0.00047	81429-20-1*0
Sulfanyl		142.81	143.27	± 0.18	kJ/mol	33.0739 ± 0.0060	13940-21-1*0
Methanethiol		-10.39	-20.66	± 0.46	kJ/mol	48.1085 ± 0.0061	74-93-1*0
Chlorous acid		25.77	20.71	± 0.63	kJ/mol	68.4594 ± 0.0011	13898-47-0*0
Dioxygen anion		-43.36	-42.72	± 0.17	kJ/mol	31.99935 ± 0.00060	11062-77-4*0
Iodooxidanyl		127.05	125.12	± 0.82	kJ/mol	142.90387 ± 0.00030	14696-98-1*0
Iodotrifluoromethane		-583.19	-589.09	± 0.45	kJ/mol	195.91038 ± 0.00080	2314-97-8*0
Carbon monoxide cation		1238.311	1241.591	± 0.026	kJ/mol	28.00955 ± 0.00085	12144-04-6*0
Hydrazine		111.75	97.60	± 0.44	kJ/mol	32.04524 ± 0.00031	302-01-2*0
Nitrate		-299.73	-306.28	± 0.22	kJ/mol	62.00549 ± 0.00090	14797-55-8*0
Methanide		141.16	137.72	± 0.24	kJ/mol	15.03507 ± 0.00083	15194-58-8*0
Methyleneamidogen		242.08	238.43	± 0.55	kJ/mol	28.03332 ± 0.00082	15845-29-1*0
Hypofluorite		-108.84	-108.67	± 0.48	kJ/mol	34.99835 ± 0.00030	12763-66-5*0
Cyanogen iodide		222.5	222.0	± 1.7	kJ/mol	152.92191 ± 0.00080	506-78-5*0
Formyl anion		11.60	11.98	± 0.44	kJ/mol	29.01859 ± 0.00086	57340-31-5*0
n-Propylium		857.17	838.89	± 0.76	kJ/mol	43.0871 ± 0.0024	19252-52-9*0
Cyclopropyl		303.91	291.29	± 0.48	kJ/mol	41.0718 ± 0.0024	2417-82-5*0
2-Propynylidyne		718.79	723.14	± 0.71	kJ/mol	37.0400 ± 0.0024	53590-28-6*0
iso-Pentane		-118.90	-152.95	± 0.39	kJ/mol	72.1488 ± 0.0041	78-78-4*0
1-Hydroxyethylidene		57.45	47.08	± 0.77	kJ/mol	44.0526 ± 0.0017	30967-49-8*21
Dicarbon monoxide		377.13	381.17	± 0.83	kJ/mol	40.0208 ± 0.0016	12071-23-7*1
Dimethylamidogen		175.07	157.73	± 0.92	kJ/mol	44.0758 ± 0.0017	15337-44-7*0
2-Iminoethyl		219.37	208.00	± 0.86	kJ/mol	42.0599 ± 0.0016	73843-90-0*2
Isocyanoamidogen		489.7	487.7	± 1.2	kJ/mol	41.03212 ± 0.00082	947408-73-3*1
Fluorodioxidanyl		26.87	25.16	± 0.26	kJ/mol	50.99720 ± 0.00060	15499-23-7*0
Chloromethylene		320.36	320.65	± 0.89	kJ/mol	48.4713 ± 0.0012	2108-20-5*2
1,1-Difluoroethene		-343.59	-350.65	± 0.63	kJ/mol	64.0341 ± 0.0016	75-38-7*0
Indane		90.89	59.86	± 0.76	kJ/mol	118.1757 ± 0.0072	496-11-7*0
o-Tolualdehyde		-44.1	-66.4	± 1.1	kJ/mol	120.1485 ± 0.0064	529-20-4*0
Carbamic acid		-421.82	-435.04	± 0.83	kJ/mol	61.0401 ± 0.0010	463-77-4*1
3-Buten-2-one		-95.28	-111.52	± 0.85	kJ/mol	70.0898 ± 0.0032	78-94-4*1
Urea		-218.16	-234.56	± 0.42	kJ/mol	60.05534 ± 0.00091	57-13-6*0
Oxomethaniminium		695.33	688.77	± 0.89	kJ/mol	44.03217 ± 0.00087	59348-22-0*0
Acetamide		-219.62	-237.13	± 0.56	kJ/mol	59.0672 ± 0.0017	60-35-5*0
1-Cyanovinyl		419.1	418.9	± 1.1	kJ/mol	52.0547 ± 0.0024	15091-87-9*0
1,3-Hexadiyne		405.25	393.56	± 0.94	kJ/mol	78.1118 ± 0.0048	4447-21-6*0
(E)-1-Methylallyl		152.70	135.38	± 0.79	kJ/mol	55.0984 ± 0.0032	17787-86-9*0
Sulfuric acid			-892.23	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*839
Iodine monochloride		19.024	17.391	± 0.013	kJ/mol	162.35717 ± 0.00090	7790-99-0*0
Hypoiodite		-102.38	-104.19	± 0.88	kJ/mol	142.90442 ± 0.00030	15065-65-3*0
Nitrogen atom cation		1872.910	1875.692	± 0.022	kJ/mol	14.006191 ± 0.000070	14158-23-7*0
Trinitrogen cation		1519.59	1516.96	± 0.89	kJ/mol	42.01967 ± 0.00021	12185-03-4*0
Oxonitrate anion		88.10	88.13	± 0.25	kJ/mol	30.00669 ± 0.00031	14967-78-3*0
Nitrogen sesquioxide		90.73	86.16	± 0.15	kJ/mol	76.01168 ± 0.00091	10544-73-7*0
Hexafluoroethane		-1334.05	-1342.35	± 0.80	kJ/mol	138.0118 ± 0.0016	76-16-4*0
Methyliumyl		1393.21	1394.07	± 0.10	kJ/mol	14.02603 ± 0.00081	15091-72-2*0
Methylene anion		328.18	328.61	± 0.18	kJ/mol	14.02713 ± 0.00081	50928-07-9*0
Methylidyne anion		475.77	479.09	± 0.21	kJ/mol	13.01919 ± 0.00080	28604-54-8*0
Ethanium		874.39	858.13	± 0.61	kJ/mol	31.0764 ± 0.0017	24669-33-8*1
Methylammonium		628.36	609.45	± 0.84	kJ/mol	32.06453 ± 0.00091	17000-00-9*0
Chlorine trifluoride		-158.62	-162.72	± 0.86	kJ/mol	92.44791 ± 0.00090	7790-91-2*0
Methylperoxy anion		-89.66	-99.81	± 0.45	kJ/mol	47.0339 ± 0.0010	35683-44-4*0
Cyclobutane		52.27	27.73	± 0.36	kJ/mol	56.1063 ± 0.0032	287-23-0*0
2-Butynyl		318.18	310.81	± 0.66	kJ/mol	53.0825 ± 0.0032	82252-88-8*0
1,2-Butadienyl		328.98	320.26	± 0.63	kJ/mol	53.0825 ± 0.0032	4777-46-2*0
Isoprene		96.29	75.77	± 0.66	kJ/mol	68.1170 ± 0.0040	78-79-5*0
Oxirene		272.44	270.29	± 0.60	kJ/mol	42.0367 ± 0.0016	157-18-6*2
Dihydroxymethyl		-196.9	-206.3	± 1.1	kJ/mol	47.0333 ± 0.0010	14840-85-8*1
Formyloxidanyl		-125.76	-127.42	± 0.55	kJ/mol	45.0174 ± 0.0010	16499-21-1*1
Methoxyethane		-194.27	-217.16	± 0.52	kJ/mol	60.0950 ± 0.0025	540-67-0*0
Cyanoamidogen anion		69.75	66.74	± 0.72	kJ/mol	41.03267 ± 0.00082	67131-47-9*2
1,1,1-Trichloroethane		-133.96	-144.53	± 0.52	kJ/mol	133.4033 ± 0.0031	71-55-6*0
Tetrachloroethene		-20.52	-21.38	± 0.99	kJ/mol	165.8322 ± 0.0039	127-18-4*0
Chlorine atom cation		1370.807	1372.603	± 0.0021	kJ/mol	35.45215 ± 0.00090	24203-47-2*0
Chlorodifluoromethane		-475.57	-481.76	± 0.99	kJ/mol	86.4681 ± 0.0012	75-45-6*0
Fluoromethylene		148.40	148.69	± 0.43	kJ/mol	32.01704 ± 0.00080	13453-52-6*2
Fluoroformyl		-176.62	-176.03	± 0.37	kJ/mol	47.00850 ± 0.00085	1871-24-5*0
2-Bromoethanol		-195.98	-220.04	± 0.52	kJ/mol	124.9645 ± 0.0019	540-51-2*0
Carbon suboxide		-94.41	-92.30	± 0.96	kJ/mol	68.0309 ± 0.0025	504-64-3*0
Ethylbenzene		58.43	29.96	± 0.52	kJ/mol	106.1650 ± 0.0064	100-41-4*0
m-Tolualdehyde		-48.4	-71.3	± 1.2	kJ/mol	120.1485 ± 0.0064	620-23-5*0
Glycine		-377.67	-394.70	± 0.55	kJ/mol	75.0666 ± 0.0017	56-40-6*0
Methylcarbamic acid		-414.50	-433.83	± 0.92	kJ/mol	75.0666 ± 0.0017	6414-57-9*1
3-Oxo-1-propenyl		190.97	184.95	± 0.91	kJ/mol	55.0553 ± 0.0024	206255-29-0*11
2-Propynal		135.53	133.37	± 0.87	kJ/mol	54.0474 ± 0.0024	624-67-9*0
Cyanomethylene		479.6	483.0	± 1.1	kJ/mol	39.0361 ± 0.0016	2612-62-6*1
3-Methylenecyclopropene		396.11	388.18	± 0.81	kJ/mol	52.0746 ± 0.0032	4095-06-1*0
Phenylperoxy		154.0	137.0	± 1.4	kJ/mol	109.1027 ± 0.0049	91422-02-5*0
Fluorosilylidyne		-60.32	-58.48	± 0.62	kJ/mol	47.08390 ± 0.00030	11128-24-8*1
Silylidyne		371.23	373.03	± 0.67	kJ/mol	29.09344 ± 0.00031	13774-94-2*0
Bromosilane		-59.0	-75.5	± 1.4	kJ/mol	111.0133 ± 0.0011	13465-73-1*0
Bromotrimethylsilane		-259.4	-290.0	± 2.0	kJ/mol	153.0931 ± 0.0027	2857-97-8*0
Trimethylsilylium		655.4	634.8	± 1.9	kJ/mol	73.1885 ± 0.0025	28927-31-3*0
1-Methyl-1-propenyl		240.12	223.95	± 0.66	kJ/mol	55.0984 ± 0.0032	71790-71-1*1
1-Butenyl		263.48	246.14	± 0.68	kJ/mol	55.0984 ± 0.0032	2669-61-6*2
Chloronium		881.5	878.4	± 1.1	kJ/mol	37.46803 ± 0.00091	36658-55-6*0
Sulfur monoxide		5.96	6.00	± 0.13	kJ/mol	48.0654 ± 0.0060	13827-32-2*0
Iodine cation		1115.549	1115.149	± 0.0062	kJ/mol	126.903921 ± 0.000030	22541-93-1*0
Ammonium			-133.076	± 0.056	kJ/mol	18.03795 ± 0.00029	14798-03-9*800
Oxygen atom		246.844	249.229	± 0.0021	kJ/mol	15.99940 ± 0.00030	17778-80-2*1
Ethylidyne		641.0	636.4	± 1.1	kJ/mol	27.0452 ± 0.0016	67624-57-1*2
Ethynylium		1687.65	1690.99	± 0.15	kJ/mol	25.0288 ± 0.0016	16456-59-0*0
Isocyanomethanide		254.00	250.96	± 0.89	kJ/mol	40.0446 ± 0.0016	81704-80-5*0
Peroxyformate		-340.93	-346.38	± 0.80	kJ/mol	61.0174 ± 0.0012	104960-05-6*1
Hydrogen peroxide cation		897.30	890.32	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*1
1-Methylethylidene		316.08	302.18	± 0.97	kJ/mol	42.0797 ± 0.0024	40852-89-9*2
Propylidene		349.52	335.83	± 0.92	kJ/mol	42.0797 ± 0.0024	6700-78-3*11
Cycloprop-2-enylium		1080.47	1075.38	± 0.99	kJ/mol	39.0554 ± 0.0024	26810-74-2*0
Trioxidanide		-120.3	-123.4	± 1.6	kJ/mol	49.00669 ± 0.00090	89965-38-8*2
Cyclobutene		178.11	161.06	± 0.60	kJ/mol	54.0904 ± 0.0032	822-35-5*0
1,3-Butadienyl		372.30	361.81	± 0.87	kJ/mol	53.0825 ± 0.0032	86181-68-2*11
Cyclohexane		-83.21	-122.77	± 0.29	kJ/mol	84.1595 ± 0.0049	110-82-7*0
Protonated oxirane		725.75	709.58	± 0.61	kJ/mol	45.0600 ± 0.0017	38607-31-70
Methoxymethyl		13.47	0.90	± 0.86	kJ/mol	45.0605 ± 0.0017	16520-04-0*0
Methoxymethylene		129.25	118.72	± 0.78	kJ/mol	44.0526 ± 0.0017	19527-10-7*21
Oxirene		387.8	383.6	± 1.3	kJ/mol	42.0367 ± 0.0016	157-18-6*11
Diethyl ether		-222.77	-250.19	± 0.75	kJ/mol	74.1216 ± 0.0033	60-29-7*0
Cyanic acid		-12.32	-15.03	± 0.43	kJ/mol	43.02478 ± 0.00086	420-05-3*0
Fulminic acid		170.73	169.27	± 0.44	kJ/mol	43.02478 ± 0.00086	51060-05-0*0
Isofulminic acid		235.25	233.55	± 0.43	kJ/mol	43.02478 ± 0.00086	506-85-4*0
Nitrosomethylidyne		389.4	390.7	± 1.1	kJ/mol	42.01684 ± 0.00086	82267-15-0*0
Acetyl chloride		-232.51	-241.50	± 0.39	kJ/mol	78.4973 ± 0.0019	75-36-5*0
Dioxoethyl		-63.26	-64.67	± 0.86	kJ/mol	57.0281 ± 0.0017	702699-38-5*0
Chlorohydroxymethyl		-54.7	-60.7	± 1.1	kJ/mol	65.4787 ± 0.0012	147139-06-8*1
1,1-Dichloroethene		9.32	3.33	± 0.50	kJ/mol	96.9427 ± 0.0024	75-35-4*0
Tetraiodomethane		323.7	318.6	± 1.1	kJ/mol	519.62858 ± 0.00081	507-25-5*0
Dichlorodifluoromethane		-488.87	-493.06	± 0.44	kJ/mol	120.9129 ± 0.0020	75-71-8*0
Fluorodichloromethane		-277.62	-283.07	± 0.90	kJ/mol	102.9224 ± 0.0020	75-43-4*0
Difluoromethylene		-193.89	-193.41	± 0.35	kJ/mol	50.00751 ± 0.00080	2154-59-8*2
Fluoromethylene		210.37	210.71	± 0.65	kJ/mol	32.01704 ± 0.00080	13453-52-6*1
Formyl fluoride		-378.63	-382.22	± 0.31	kJ/mol	48.01644 ± 0.00086	1493-02-3*0
Fulvenallene		368.7	354.4	± 1.1	kJ/mol	90.1225 ± 0.0056	27041-32-3*2
Tropyl		296.87	279.44	± 0.94	kJ/mol	91.1305 ± 0.0056	3551-27-7*0
p-Tolualdehyde		-49.2	-72.2	± 1.2	kJ/mol	120.1485 ± 0.0064	104-87-0*0
o-Toluoyl		110.4	91.9	± 1.4	kJ/mol	119.1406 ± 0.0064	104680-89-9*0
Sulfur dioxide anion		-401.27	-403.53	± 0.73	kJ/mol	64.0653 ± 0.0060	12143-17-8*0
2-Hydroxyprop-1-en-1-yl		101.65	89.42	± 0.86	kJ/mol	57.0712 ± 0.0024	1976041-84-5*11
Propyl nitrite		-94.5	-119.4	± 1.7	kJ/mol	89.0932 ± 0.0025	543-67-9*1
1-Formylethenyl		177.62	172.09	± 0.80	kJ/mol	55.0553 ± 0.0024	191018-90-3*0
2-Cyanovinyl		447.86	445.37	± 0.98	kJ/mol	52.0547 ± 0.0024	189141-20-6*2
1,2,3-Butatrien-1-ylium		1271.9	1270.1	± 1.1	kJ/mol	51.0661 ± 0.0032	81932-79-8*2
1-Buten-3-yn-1-yl		547.40	544.73	± 0.84	kJ/mol	51.0666 ± 0.0032	2810-61-9*1
3-Buten-1-ynyl		628.65	626.45	± 0.99	kJ/mol	51.0666 ± 0.0032	108179-98-2*0
Methylsilane		-9.82	-25.99	± 0.89	kJ/mol	46.14384 ± 0.00095	992-94-9*0
Fluorosilane		-346.20	-355.60	± 0.72	kJ/mol	50.10772 ± 0.00037	13537-33-2*0
Chlorosilane		-126.5	-135.5	± 1.4	kJ/mol	66.56202 ± 0.00097	13465-78-6*0
Tetramethylsilane		-185.8	-216.2	± 1.9	kJ/mol	88.2236 ± 0.0033	75-76-3*0
Hydroxysilyl		-104.1	-112.0	± 1.5	kJ/mol	47.10872 ± 0.00047	113648-09-2*0
Trimethylsilanol		-465.2	-491.5	± 1.9	kJ/mol	90.1964 ± 0.0025	1066-40-6*0
2-Aminoethyl		174.49	158.03	± 0.82	kJ/mol	44.0758 ± 0.0017	4422-53-1*0
2-Propanamine		-56.63	-83.43	± 0.52	kJ/mol	59.1103 ± 0.0025	75-31-0*0
Bromanylium		1257.786	1251.723	± 0.056	kJ/mol	79.90345 ± 0.00100	22541-56-6*0
Sulfuric acid		-715.5	-729.7	± 1.1	kJ/mol	98.0795 ± 0.0061	7664-93-9*0
Dioxygen		0.000	0.000	± 0.000	kJ/mol	31.99880 ± 0.00060	7782-44-7*1
Hydroperoxonium		738.2	727.9	± 1.2	kJ/mol	35.02207 ± 0.00064	70850-26-9*1
Dinitrogen cation		1503.311	1503.312	± 0.000	kJ/mol	28.01293 ± 0.00014	13966-04-6*0
Nitrogen atom		470.582	472.445	± 0.022	kJ/mol	14.006740 ± 0.000070	17778-88-0*1
Chloro hypochlorite		79.79	77.98	± 0.36	kJ/mol	86.9048 ± 0.0018	7791-21-1*0
Carbon dioxide cation		936.089	936.924	± 0.017	kJ/mol	44.00895 ± 0.00100	12181-61-2*0
Xenon cation		1170.354	1170.354	± 0.0062	kJ/mol	131.2895 ± 0.0200	24203-25-6*0
Nitroxyl		79.38	74.12	± 0.19	kJ/mol	62.00494 ± 0.00090	12033-49-7*0
Hydrazino		234.79	224.27	± 0.69	kJ/mol	31.03730 ± 0.00025	13598-46-4*0
Nitryl hydride		-36.67	-43.64	± 0.84	kJ/mol	47.01348 ± 0.00061	90266-90-3*0
Carbon anion		589.616	594.763	± 0.040	kJ/mol	12.01125 ± 0.00080	14337-00-9*0
Oxoniumyl ion		978.496	975.592	± 0.024	kJ/mol	18.01473 ± 0.00033	56583-62-1*0
Chlorooxy hypochlorite		134.58	131.34	± 0.56	kJ/mol	102.9042 ± 0.0019	12292-23-8*0
Hydrogen isocyanide cation		1351.53	1351.49	± 0.83	kJ/mol	27.02483 ± 0.00081	74158-11-5*0
Cyanomethanide		113.69	110.87	± 0.53	kJ/mol	40.0446 ± 0.0016	21438-99-3*0
Methyloxonium		589.2	575.0	± 1.1	kJ/mol	33.04925 ± 0.00092	17836-08-7*0
Chlorine pentafluoride		-226.0	-234.1	± 1.3	kJ/mol	130.44472 ± 0.00090	13637-63-3*0
n-Propylide		123.1	105.5	± 1.2	kJ/mol	43.0882 ± 0.0024	59513-13-2*0
Allyl anion		134.02	123.01	± 0.21	kJ/mol	41.0723 ± 0.0024	1724-46-5*0
Propargylenide		434.5	437.0	± 1.1	kJ/mol	38.0485 ± 0.0024	82906-05-6*1
2-Butyn-1-yl anion		253.8	244.9	± 1.1	kJ/mol	53.0830 ± 0.0032	65114-66-1*0
Cycloheptatriene		207.82	184.40	± 0.90	kJ/mol	92.1384 ± 0.0056	544-25-2*0
n-Octane		-161.04	-207.88	± 0.51	kJ/mol	114.2285 ± 0.0065	111-65-9*0
Ethoxy		5.66	-8.77	± 0.43	kJ/mol	45.0605 ± 0.0017	2154-50-9*52
Ethenol		-108.85	-119.56	± 0.49	kJ/mol	44.0526 ± 0.0017	557-75-5*2
Hydroperoxymethyl		73.26	65.96	± 0.97	kJ/mol	47.0333 ± 0.0010	74087-87-9*0
Ketene		-45.33	-48.39	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*2
Oxiranyl		172.78	164.50	± 0.98	kJ/mol	43.0446 ± 0.0016	31586-84-2*0
Ketene		181.9	179.0	± 1.1	kJ/mol	42.0367 ± 0.0016	463-51-4*1
Oxoethylidene		261.1	257.6	± 1.1	kJ/mol	42.0367 ± 0.0016	39920-84-8*12
Methoxyethene		-89.3	-107.1	± 1.1	kJ/mol	58.0791 ± 0.0025	107-25-5*2
2-Propanol		-248.60	-272.70	± 0.26	kJ/mol	60.0950 ± 0.0025	67-63-0*0
Methyl acetate		-363.2	-382.0	± 1.2	kJ/mol	74.0785 ± 0.0025	79-20-9*2
Carboxymethyl		-226.5	-236.4	± 1.1	kJ/mol	59.0440 ± 0.0017	2887-46-9*1
1-Iminoethyl		233.1	223.0	± 1.1	kJ/mol	42.0599 ± 0.0016	128365-64-0*2
1-Aminoethenyl		294.71	286.08	± 0.92	kJ/mol	42.0599 ± 0.0016	180385-92-6*0
Peroxyhypochlorous acid		3.97	-1.30	± 0.95	kJ/mol	68.4594 ± 0.0011	67952-07-2*0
Dichloride		-231.91	-230.84	± 0.34	kJ/mol	70.9059 ± 0.0018	12595-89-0*0
Nitrilomethylimidogen		581.6	578.4	± 1.5	kJ/mol	41.03212 ± 0.00082	324529-58-0*2
Cyanoacetylide		300.4	305.7	± 1.1	kJ/mol	50.0394 ± 0.0024	12373-53-4*0
Chloromethylidyne		430.64	434.39	± 0.67	kJ/mol	47.4634 ± 0.0012	3889-76-7*0
Chloromethanol		-232.3	-242.6	± 1.2	kJ/mol	66.4866 ± 0.0013	15454-33-8*0
Chloromethoxy		-11.9	-18.7	± 1.1	kJ/mol	65.4787 ± 0.0012	114282-89-2*0
Fluorotrichloromethane		-283.23	-286.38	± 0.76	kJ/mol	137.3672 ± 0.0028	75-69-4*0
Formyl chloride		-179.87	-183.07	± 0.67	kJ/mol	64.4707 ± 0.0012	2565-30-2*0
2-Chloroethanol		-249.78	-266.49	± 0.59	kJ/mol	80.5132 ± 0.0019	107-07-3*0
Butadiynyl		801.90	808.50	± 0.96	kJ/mol	49.0507 ± 0.0032	53561-65-2*0
o-Benzyne		468.25	459.33	± 0.86	kJ/mol	76.0960 ± 0.0048	462-80-6*2
m-Toluoyl		109.4	90.8	± 1.4	kJ/mol	119.1406 ± 0.0064	67958-04-7*0
Iodobenzene		178.62	162.64	± 0.99	kJ/mol	204.0084 ± 0.0048	591-50-4*0
Furan		-21.38	-34.51	± 0.94	kJ/mol	68.0740 ± 0.0032	110-00-9*0
1-Hydroxy-1-methylethyl		-78.21	-96.46	± 0.79	kJ/mol	59.0871 ± 0.0025	5131-95-3*0
Trifluoroethene		-493.5	-498.5	± 1.4	kJ/mol	82.0245 ± 0.0016	359-11-5*0
Isocyanoethene		285.32	278.82	± 0.92	kJ/mol	53.0627 ± 0.0024	14668-82-7*0
1-Isocyanoethylidene		527.9	523.2	± 1.1	kJ/mol	53.0627 ± 0.0024	498544-34-62
2-Cyanovinyl		448.28	445.82	± 0.97	kJ/mol	52.0547 ± 0.0024	189141-20-6*1
3-Methylene-1-cyclopropen-1-yl		628.3	625.7	± 1.1	kJ/mol	51.0666 ± 0.0032	127611-24-9*0
Oxosilylene		-98.37	-97.21	± 0.54	kJ/mol	44.08490 ± 0.00042	10097-28-6*0
Silyloxy anion		-311.8	-321.1	± 1.6	kJ/mol	47.10927 ± 0.00047	43336-62-5*0
Cyclobutyl		246.59	227.69	± 0.72	kJ/mol	55.0984 ± 0.0032	4548-06-5*0
1-Ethynyl-2-propyn-1-yl		577.09	575.47	± 0.99	kJ/mol	63.0773 ± 0.0040	78596-35-7*0
1-Propanamine		-42.20	-69.94	± 0.42	kJ/mol	59.1103 ± 0.0025	107-10-8*0
Sulfurous acid		-511.31	-521.52	± 0.89	kJ/mol	82.0801 ± 0.0061	7782-99-2*2
Sulfo		-366.9	-374.7	± 1.1	kJ/mol	81.0721 ± 0.0061	32750-86-0*0
Dioxodiazoxane		93.0	87.9	± 1.3	kJ/mol	76.01168 ± 0.00091	122413-35-8*1
Nitric acid			-206.52	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*800
Isodiazene		307.57	300.49	± 0.60	kJ/mol	30.02936 ± 0.00020	28647-38-3*0
Oxoammoniumyl		1092.46	1089.54	± 0.66	kJ/mol	31.01353 ± 0.00032	63559-87-5*0
Peroxynitrous acid		7.83	0.75	± 0.41	kJ/mol	63.01288 ± 0.00091	14691-52-2*1
Peroxynitric acid		-41.46	-51.77	± 0.32	kJ/mol	79.0123 ± 0.0012	26404-66-0*0
Tetrafluorohydrazine		-13.4	-22.9	± 1.4	kJ/mol	104.00709 ± 0.00014	10036-47-2*1
Carbon cation		1797.845	1803.443	± 0.040	kJ/mol	12.01015 ± 0.00080	14067-05-1*0
Ethylidyne		508.65	504.95	± 0.80	kJ/mol	27.0452 ± 0.0016	67624-57-1*0
Methylamidogen anion		145.40	134.57	± 0.64	kJ/mol	30.04975 ± 0.00085	54448-39-4*0
Methylimidogen		323.0	315.3	± 1.0	kJ/mol	29.04126 ± 0.00083	27770-42-9*0
Iminomethylium		953.4	949.3	± 1.4	kJ/mol	28.03277 ± 0.00082	196216-36-1*0
Hydrogen carbonate		-719.2	-725.6	± 1.5	kJ/mol	61.0174 ± 0.0012	71-52-3*0
Cyclopropylide		265.4	252.6	± 1.1	kJ/mol	41.0723 ± 0.0024	1724-45-4*0
Propylidyne		492.7	483.0	± 1.2	kJ/mol	41.0718 ± 0.0024	85056-54-8*1
Cyclopropylidene		475.06	467.04	± 0.84	kJ/mol	40.0639 ± 0.0024	2143-70-6*1
Propargylium		1193.58	1190.77	± 0.31	kJ/mol	39.0554 ± 0.0024	21540-27-2*0
Cycloprop-1-enyl		527.52	523.13	± 0.58	kJ/mol	39.0559 ± 0.0024	19528-44-0*0
Cyclopropenylidene		497.09	496.13	± 0.45	kJ/mol	38.0480 ± 0.0024	16165-40-5*0
Propargylenide		437.0	439.5	± 1.1	kJ/mol	38.0485 ± 0.0024	82906-05-6*2
2-Propyn-1-ylium-1-ylidene		1598.49	1602.87	± 0.90	kJ/mol	37.0395 ± 0.0024	75104-46-0*0
sec-Butyl		91.35	66.59	± 0.71	kJ/mol	57.1143 ± 0.0033	2348-55-2*0
iso-Butyl		97.34	73.35	± 0.78	kJ/mol	57.1143 ± 0.0033	4630-45-9*0
1-Methylene-2-propenyl		327.20	317.20	± 0.74	kJ/mol	53.0825 ± 0.0032	1204515-52-5*0
2-Hydrotrioxy		299.4	293.7	± 1.2	kJ/mol	49.00614 ± 0.00090	12500-78-60
n-Heptane		-145.39	-187.26	± 0.44	kJ/mol	100.2019 ± 0.0057	142-82-5*0
Oxoethanide		-44.0	-49.5	± 1.3	kJ/mol	43.0452 ± 0.0016	78944-68-0*0
2-Hydroperoxyethyl		64.8	50.4	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-97-3*32
Methoxyoxomethyl		-152.8	-160.9	± 1.1	kJ/mol	59.0440 ± 0.0017	16481-04-2*1
Water dimer		-491.026	-499.066	± 0.044	kJ/mol	36.03056 ± 0.00066	25655-83-8*0
Hydroxyformyl		-174.33	-177.35	± 0.48	kJ/mol	45.0174 ± 0.0010	2564-86-5*2
Hydroxyformyl anion		-319.53	-322.11	± 0.56	kJ/mol	45.0180 ± 0.0010	78944-70-4*2
Ethyl formate		-375.0	-393.7	± 1.0	kJ/mol	74.0785 ± 0.0025	109-94-4*1
Propionic acid		-435.77	-453.67	± 0.60	kJ/mol	74.0785 ± 0.0025	79-09-4*1
Fluoronium		774.04	771.10	± 0.91	kJ/mol	21.01373 ± 0.00014	12206-67-6*2
Trioxidane		-72.67	-81.16	± 0.78	kJ/mol	50.01408 ± 0.00091	14699-99-1*2
(Methylimino)methyl		278.0	267.9	± 1.1	kJ/mol	42.0599 ± 0.0016	117928-23-1*1
1-Aziridinyl		314.0	301.8	± 1.4	kJ/mol	42.0599 ± 0.0016	23838-09-7*0
(Dimethylamino)methyl		166.5	143.4	± 1.3	kJ/mol	58.1024 ± 0.0025	30208-47-0*0
Cyanoamidogen		652.4	649.6	± 1.2	kJ/mol	41.03212 ± 0.00082	12347-01-2*21
Diazomethyl		652.8	649.8	± 1.3	kJ/mol	41.03212 ± 0.00082	20813-32-5*22
Diazomethanide		305.20	302.10	± 0.76	kJ/mol	41.03267 ± 0.00082	100840-43-5*2
Isocyanoamidogen		828.3	825.4	± 1.3	kJ/mol	41.03212 ± 0.00082	947408-73-3*22
Ethylamidogen anion		106.55	88.90	± 0.78	kJ/mol	44.0763 ± 0.0017	54448-40-7*0
Chloromethide		56.3	53.1	± 2.0	kJ/mol	49.4798 ± 0.0012	60291-29-4*0
Hexachloroethane		-144.1	-146.5	± 1.3	kJ/mol	236.7376 ± 0.0056	67-72-1*0
cis-1,2-Dichloroethene	$C(\Cl)=C\Cl$	3.83	-2.16	± 0.55	kJ/mol	96.9427 ± 0.0024	156-59-2*0
Dichloroacetylene		232.85	236.16	± 0.72	kJ/mol	94.9268 ± 0.0024	7572-29-4*0
Iodoform		217.3	209.3	± 1.6	kJ/mol	393.73205 ± 0.00081	75-47-8*0
Difluoromethylene		-193.89	-193.41	± 0.35	kJ/mol	50.00751 ± 0.00080	2154-59-8*0
1,1-Difluoroethane		-489.00	-502.72	± 0.53	kJ/mol	66.0500 ± 0.0016	75-37-6*0
Vinyl iodide		139.64	130.80	± 0.93	kJ/mol	153.9497 ± 0.0016	593-66-8*0
Bromoacetylene		287.5	281.0	± 1.6	kJ/mol	104.9333 ± 0.0019	593-61-3*0
2-Fluoroethanol		-405.62	-422.87	± 0.99	kJ/mol	64.0589 ± 0.0017	371-62-0*0
1,3,5-Hexatriyne		682.2	687.0	± 1.2	kJ/mol	74.0801 ± 0.0048	3161-99-7*0
Benzylide		142.01	123.10	± 0.40	kJ/mol	91.1310 ± 0.0056	18860-15-6*0
Benzylidene		489.6	474.5	± 1.1	kJ/mol	90.1225 ± 0.0056	3101-08-4*2
Norbornadiene		265.0	239.6	± 1.5	kJ/mol	92.1384 ± 0.0056	121-46-0*0
Benzonitrile		230.00	215.80	± 0.92	kJ/mol	103.1213 ± 0.0056	100-47-0*0
Perchloryl		191.77	186.10	± 0.62	kJ/mol	83.4509 ± 0.0013	13932-10-0*0
p-Toluoyl		108.4	89.8	± 1.4	kJ/mol	119.1406 ± 0.0064	67958-03-6*0
Acetonate		-187.50	-201.06	± 0.91	kJ/mol	57.0717 ± 0.0024	24262-31-5*0
Methyl nitrite		-54.33	-65.00	± 0.69	kJ/mol	61.0401 ± 0.0010	624-91-9*0
Difluoride		-290.6	-289.8	± 1.3	kJ/mol	37.9973550 ± 0.0000010	12184-85-9*0
Chloric acid		0.6	-6.5	± 1.1	kJ/mol	84.4588 ± 0.0013	7790-93-4*0
Glycinate		-477.6	-493.3	± 1.4	kJ/mol	74.0592 ± 0.0017	23297-34-9*0
Carboxymethanaminium		270.0	246.7	± 1.1	kJ/mol	76.0740 ± 0.0018	56-40-60
Chlorate		-208.2	-213.7	± 1.4	kJ/mol	83.4514 ± 0.0013	14866-68-3*0
cis-1,2-Diiodoethene	$C(\I)=C\I$	217.57	209.28	± 0.34	kJ/mol	279.8462 ± 0.0016	590-26-1*0
Acryloyl		102.80	97.21	± 0.98	kJ/mol	55.0553 ± 0.0024	72241-20-4*2
3-Oxo-1,2-propadien-1-yl		290.36	292.87	± 0.95	kJ/mol	53.0394 ± 0.0024	1198096-74-0*0
1-Cyanoethylidene		475.7	470.6	± 1.1	kJ/mol	53.0627 ± 0.0024	498544-34-6*2
3-Imino-2-propen-1-ylidene		530.7	525.9	± 1.2	kJ/mol	53.0627 ± 0.0024	916765-05-4*11
2-(Methylidyneamino)ethenyl		600.7	595.7	± 1.2	kJ/mol	53.0627 ± 0.0024	123416-74-0*11
1-Cyanovinyl anion		224.3	221.5	± 1.2	kJ/mol	52.0553 ± 0.0024	36259-97-9*0
1,2,3-Butatrien-1-yl anion		388.5	386.7	± 1.1	kJ/mol	51.0672 ± 0.0032	102275-54-7*0
Difluorosilylene		-629.1	-630.0	± 1.3	kJ/mol	66.08231 ± 0.00030	13966-66-0*2
Silylene		361.96	360.34	± 0.99	kJ/mol	30.10138 ± 0.00033	13825-90-6*1
Di-mu-hydrodihydrodisilicon		374.8	364.4	± 2.3	kJ/mol	60.20276 ± 0.00066	129970-82-7*12
Trimethylsiloxy		-188.1	-211.1	± 1.9	kJ/mol	89.1885 ± 0.0025	54572-10-0*0
1,5-Hexadiyne		431.7	421.2	± 1.2	kJ/mol	78.1118 ± 0.0048	628-16-0*0
2-Methylallyl		155.97	138.85	± 0.77	kJ/mol	55.0984 ± 0.0032	15157-95-6*0
3-Butenyl		223.26	206.76	± 0.90	kJ/mol	55.0984 ± 0.0032	2154-62-3*0
2-Methyl-1-propenyl		251.26	234.24	± 0.72	kJ/mol	55.0984 ± 0.0032	33825-33-1*0
N-Methylethanamine		-17.4	-45.6	± 1.1	kJ/mol	59.1103 ± 0.0025	624-78-2*0
Phenanthrene		232.01	203.20	± 0.75	kJ/mol	178.2292 ± 0.0112	85-01-8*0
Disulfene oxide		-50.61	-52.63	± 0.43	kJ/mol	80.1314 ± 0.0120	20901-21-7*0
Sulfur hydroxide oxide		-474.5	-483.9	± 1.6	kJ/mol	97.0715 ± 0.0061	12337-07-4*1
Ethanethiol		-28.74	-45.57	± 0.38	kJ/mol	62.1350 ± 0.0062	75-08-1*0
Chloride			-166.990	± 0.023	kJ/mol	35.45325 ± 0.00090	16887-00-6*800
Dinitrogen tetraoxide		20.16	10.87	± 0.14	kJ/mol	92.0111 ± 0.0012	10544-72-6*0
Azanylium		944.274	937.319	± 0.029	kJ/mol	17.03001 ± 0.00022	19496-55-0*0
Difluoroamidogen		36.24	33.66	± 0.63	kJ/mol	52.003546 ± 0.000070	3744-07-8*0
Fluoroimidogen		232.64	232.63	± 0.80	kJ/mol	33.005143 ± 0.000070	13967-06-1*1
Iodine monobromide		49.727	40.780	± 0.066	kJ/mol	206.8085 ± 0.0010	7789-33-5*0
Oxygen atom		436.665	438.523	± 0.0021	kJ/mol	15.99940 ± 0.00030	17778-80-2*2
Methyliumylidene		1619.749	1623.093	± 0.041	kJ/mol	13.01809 ± 0.00080	24361-82-8*0
Ethylidyne		508.65	504.95	± 0.80	kJ/mol	27.0452 ± 0.0016	67624-57-1*1
Vinylidene anion		364.28	364.09	± 0.31	kJ/mol	26.0378 ± 0.0016	66295-36-1*0
Trioxidanyl		25.36	23.38	± 0.13	kJ/mol	49.00614 ± 0.00090	12500-78-6*1
Methanol cation		856.89	846.57	± 0.32	kJ/mol	32.04131 ± 0.00090	12538-91-9*0
Hydroxymethylene		219.3	216.4	± 1.1	kJ/mol	30.02598 ± 0.00087	19710-56-6*3
Aquacarbon		442.7	441.1	± 1.3	kJ/mol	30.02598 ± 0.00087	81434-73-3*1
Iodine		107.157	106.757	± 0.0021	kJ/mol	126.904470 ± 0.000030	14362-44-8*1
Carbonic acid		-596.43	-606.54	± 0.73	kJ/mol	62.0248 ± 0.0012	463-79-6*2
Carbonic acid		-561.24	-570.09	± 0.91	kJ/mol	62.0248 ± 0.0012	463-79-6*3
Trioxygen difluoride		112.5	106.7	± 1.1	kJ/mol	85.99501 ± 0.00090	16829-28-0*1
Hydroperoxycarbonyl		-73.24	-77.10	± 0.97	kJ/mol	61.0168 ± 0.0012	153751-35-0*0
1,3-Dioxolan-2-one		-492.60	-510.24	± 0.85	kJ/mol	88.0621 ± 0.0026	96-49-1*0
Pyruvic acid		-520.53	-534.87	± 0.97	kJ/mol	88.0621 ± 0.0026	127-17-3*0
Dimethyl carbonate		-550.03	-570.58	± 0.37	kJ/mol	90.0779 ± 0.0026	616-38-6*1
Allylium		964.48	952.92	± 0.33	kJ/mol	41.0713 ± 0.0024	1724-44-3*0
Propylidyne		625.0	613.4	± 1.2	kJ/mol	41.0718 ± 0.0024	85056-54-8*2
1-Propynyl		528.57	526.40	± 0.65	kJ/mol	39.0559 ± 0.0024	89342-91-6*0
1-Propynylide		264.62	261.04	± 0.66	kJ/mol	39.0565 ± 0.0024	36147-87-2*0
1-Propen-1-yl-3-ylidene		656.8	653.3	± 1.1	kJ/mol	39.0559 ± 0.0024	84654-90-0*11
Oxidanylium		1293.362	1293.391	± 0.026	kJ/mol	17.00679 ± 0.00031	12259-29-9*0
t-Butyl anion		76.9	52.1	± 1.3	kJ/mol	57.1148 ± 0.0033	65114-21-8*0
Methylcyclopropane		47.5	24.2	± 1.2	kJ/mol	56.1063 ± 0.0032	594-11-6*0
5-Ethenyl-1,3-cyclopentadiene		237.2	215.4	± 1.4	kJ/mol	92.1384 ± 0.0056	29647-85-6*1
2-Hydroxyethenyl		138.01	131.27	± 0.72	kJ/mol	43.0446 ± 0.0016	108665-16-3*21
Ethynol		399.8	397.4	± 1.8	kJ/mol	42.0367 ± 0.0016	32038-79-2*11
Oxiranylidene		213.5	209.3	± 1.4	kJ/mol	42.0367 ± 0.0016	50983-85-2*2
1-Hydroperoxyethylium		690.7	675.0	± 1.5	kJ/mol	61.0594 ± 0.0017	126898-98-421
Ethenyldioxy		118.42	108.92	± 0.99	kJ/mol	59.0440 ± 0.0017	88181-72-0*1
Hydroxyformyl anion		-313.63	-315.43	± 0.56	kJ/mol	45.0180 ± 0.0010	78944-70-4*1
Ethoxyethene		-117.7	-141.5	± 1.5	kJ/mol	72.1057 ± 0.0033	109-92-2*2
1,1-Ethenediol		-307.51	-320.46	± 0.82	kJ/mol	60.0520 ± 0.0017	10375-04-9*1
1,2-Ethenediol		-272.64	-284.97	± 0.89	kJ/mol	60.0520 ± 0.0017	1571-60-4*1
1-Methoxyethenol		-284.2	-303.6	± 1.1	kJ/mol	74.0785 ± 0.0025	4453-91-2*1
Hydroxy(1-methylethylidene)oxonium		3.52	-15.46	± 0.94	kJ/mol	74.0785 ± 0.0025	65339-02-8*0
(Formyloxy)methyl		-151.3	-159.4	± 1.1	kJ/mol	59.0440 ± 0.0017	3122-12-1*1
Ethylene glycol		-369.65	-389.27	± 0.40	kJ/mol	62.0678 ± 0.0018	107-21-1*0
Oxalic acid		-721.0	-731.6	± 1.2	kJ/mol	90.0349 ± 0.0020	144-62-7*0
(Methylamino)methyl cation		729.63	711.01	± 0.97	kJ/mol	44.0752 ± 0.0017	31277-24-40
(Methyleneamino)methyl anion		187.0	176.6	± 1.6	kJ/mol	42.0604 ± 0.0016	73859-26-4*0
2-Aminoethenyl		319.8	309.6	± 1.3	kJ/mol	42.0599 ± 0.0016	176964-54-8*2
Bromochlorane		21.891	14.447	± 0.059	kJ/mol	115.3567 ± 0.0013	13863-41-7*0
Bromotrichloromethane		-29.81	-38.95	± 0.53	kJ/mol	198.2728 ± 0.0030	75-62-7*0
Dichloromethyl		92.91	90.99	± 0.88	kJ/mol	83.9240 ± 0.0020	3474-12-2*0
Chloromethyl		118.47	115.40	± 0.87	kJ/mol	49.4793 ± 0.0012	6806-86-6*0
Methyl hypochlorite		-53.0	-63.0	± 1.4	kJ/mol	66.4866 ± 0.0013	593-78-2*0
1,2-Dichloroethane		-118.49	-130.44	± 0.53	kJ/mol	98.9586 ± 0.0024	107-06-2*0
Chlorofluoromethane		-256.43	-263.63	± 0.85	kJ/mol	68.4777 ± 0.0012	593-70-4*0
Difluoromethyliumyl		908.35	908.78	± 0.77	kJ/mol	50.00696 ± 0.00080	54250-40-7*0
Fluoromethyliumylidene		1123.49	1126.70	± 0.37	kJ/mol	31.00855 ± 0.00080	33412-11-2*0
Hydrogen fluoride			-324.55	± 0.13	kJ/mol	20.006343 ± 0.000070	7664-39-3*955
1,2-Difluoroacetylene		2.85	5.67	± 0.63	kJ/mol	62.0182 ± 0.0016	689-99-6*0
Iodoacetylene		324.0	323.8	± 2.0	kJ/mol	151.9338 ± 0.0016	14545-08-5*0
Chloroformyl		-21.92	-20.53	± 0.49	kJ/mol	63.4628 ± 0.0012	2602-42-8*0
o-Benzyne anion		413.87	404.76	± 0.95	kJ/mol	76.0965 ± 0.0048	100569-88-8*0
Tetroxidane		-33.32	-43.99	± 0.44	kJ/mol	66.0135 ± 0.0012	29683-94-1*21
Dioxaziridinyl		355.1	352.6	± 1.4	kJ/mol	46.00554 ± 0.00060	66252-29-7*0
Cycloheptene		28.58	-8.65	± 0.74	kJ/mol	96.1702 ± 0.0057	628-92-2*0
Anisole		-45.97	-70.81	± 0.63	kJ/mol	108.1378 ± 0.0056	100-66-3*0
Benzoylium		764.1	750.0	± 1.3	kJ/mol	105.1135 ± 0.0056	19270-10-1*0
Benzoyl fluoride		-287.9	-304.3	± 1.3	kJ/mol	124.1124 ± 0.0056	455-32-3*0
Fluorobenzene cation		791.94	776.92	± 0.39	kJ/mol	96.1018 ± 0.0048	34468-25-2*0
Nitrosobenzene		217.0	200.0	± 1.2	kJ/mol	107.1100 ± 0.0048	586-96-9*0
1-Methylethoxy		-25.05	-43.81	± 0.74	kJ/mol	59.0871 ± 0.0025	3958-66-5*0
Nitromethyl		139.8	130.4	± 1.1	kJ/mol	60.0321 ± 0.0010	16787-85-2*0
Nitroethane		-83.42	-102.75	± 0.62	kJ/mol	75.0666 ± 0.0017	79-24-3*0
Carboxymethanaminium		270.0	246.6	± 1.1	kJ/mol	76.0740 ± 0.0018	56-40-61
Hypochloroperoxoous acid, hydroxy ester		48.4	41.5	± 1.8	kJ/mol	84.4588 ± 0.0013	928652-99-7*1
cis-1,2-Dibromoethene	$C(\Br)=C\Br$	124.7	104.1	± 1.6	kJ/mol	185.8453 ± 0.0026	590-11-4*0
2-Butanone		-216.83	-238.28	± 0.79	kJ/mol	72.1057 ± 0.0033	78-93-3*0
Acryloyl		101.2	95.2	± 1.4	kJ/mol	55.0553 ± 0.0024	72241-20-4*11
Formaldoxime		30.6	20.0	± 1.3	kJ/mol	45.04066 ± 0.00088	75-17-2*1
1,3-Cyclobutadien-1-yl		653.9	649.4	± 1.1	kJ/mol	51.0666 ± 0.0032	127611-22-7*0
5-Methyl-1,3-cyclopentadiene		134.1	111.1	± 1.4	kJ/mol	80.1277 ± 0.0048	96-38-8*0
Trifluorosilyl		-993.0	-996.0	± 1.3	kJ/mol	85.08071 ± 0.00030	14835-14-4*0
Silylsilylene		317.3	309.5	± 1.9	kJ/mol	60.20276 ± 0.00066	50420-90-1*2
Fluorotrimethylsilane		-547.1	-570.7	± 2.0	kJ/mol	92.1875 ± 0.0025	420-56-4*0
Chlorotrimethylsilane		-326.3	-349.4	± 2.3	kJ/mol	108.6418 ± 0.0027	75-77-4*0
Trimethylsiloxide		-486.6	-510.4	± 2.1	kJ/mol	89.1890 ± 0.0025	41866-81-3*0
1,4-Hexadiyne		424.8	414.8	± 1.2	kJ/mol	78.1118 ± 0.0048	10420-91-4*0
Biallenyl		410.7	399.0	± 1.5	kJ/mol	78.1118 ± 0.0048	29776-96-3*1
1,2,3,4-Hexatetraene		429.9	420.1	± 1.5	kJ/mol	78.1118 ± 0.0048	177856-38-1*0
Pentatetraene		452.62	448.62	± 0.93	kJ/mol	64.0853 ± 0.0040	21986-03-8*0
1-Aminoethyl		133.37	116.59	± 0.93	kJ/mol	44.0758 ± 0.0017	30208-36-7*0
Ethylamidogen		166.75	150.62	± 0.94	kJ/mol	44.0758 ± 0.0017	41084-92-8*0
2-Naphthyl anion		288.8	269.4	± 1.2	kJ/mol	127.1631 ± 0.0080	88760-89-8*0
1-Naphthyl anion		283.6	264.2	± 1.2	kJ/mol	127.1631 ± 0.0080	125254-29-7*0
Nitrosamine		85.83	76.95	± 0.95	kJ/mol	46.02876 ± 0.00036	35576-91-1*0
Sulfur trioxide anion		-603.0	-608.6	± 2.3	kJ/mol	80.0647 ± 0.0061	12210-38-7*0
Diazenyl		252.16	249.24	± 0.45	kJ/mol	29.02142 ± 0.00016	36882-13-0*0
Nitrosyl chloride		54.457	52.555	± 0.066	kJ/mol	65.45884 ± 0.00095	2696-92-6*0
Carbide		504.39	510.97	± 0.31	kJ/mol	24.0219 ± 0.0016	12595-78-7*0
Carbon dioxide		49.8	50.6	± 1.1	kJ/mol	44.00950 ± 0.00100	124-38-9*1
Bicyclo[1.1.0]buta-1,3-diene-2,4-diyl		1047.14	1054.73	± 0.68	kJ/mol	48.0428 ± 0.0032	12184-80-4*0
Methane cation		1150.689	1144.306	± 0.057	kJ/mol	16.04191 ± 0.00085	20741-88-2*0
Ethanium		874.39	858.15	± 0.61	kJ/mol	31.0764 ± 0.0017	24669-33-8*0
Bifluoride		-481.8	-480.6	± 1.9	kJ/mol	39.005295 ± 0.000070	18130-74-02
Acetylene cation		1328.91	1328.24	± 0.12	kJ/mol	26.0367 ± 0.0016	25641-79-6*0
Chlorine difluoride		-47.0	-48.2	± 1.3	kJ/mol	73.44951 ± 0.00090	24801-48-7*0
1-Ethylium-1-ylidene		1329.8	1328.3	± 1.2	kJ/mol	27.0447 ± 0.0016	78949-84-5*0
Ethylidyne anion		457.2	453.1	± 1.2	kJ/mol	27.0458 ± 0.0016	117768-70-4*0
Vinylidene		610.65	610.36	± 0.39	kJ/mol	26.0373 ± 0.0016	2143-69-3*1
Bromide			-120.50	± 0.12	kJ/mol	79.90455 ± 0.00100	24959-67-9*800
Dinitrogen pentoxide		24.31	14.74	± 0.29	kJ/mol	108.0105 ± 0.0015	10102-03-1*0
Hydrogen fluoride			-334.67	± 0.15	kJ/mol	20.006343 ± 0.000070	7664-39-3*800
Water anion		31.3	29.8	± 3.1	kJ/mol	18.01583 ± 0.00033	12259-30-2*100
Isocyanomethyl		363.3	360.8	± 1.1	kJ/mol	40.0440 ± 0.0016	70971-59-4*0
Methyloxoniumylidene		1062.72	1054.91	± 0.57	kJ/mol	31.03337 ± 0.00088	58157-09-8*0
Hydroxymethanide		10.0	3.4	± 1.5	kJ/mol	31.03447 ± 0.00088	55830-71-2*0
Formaldehyde		-105.380	-109.220	± 0.094	kJ/mol	30.02598 ± 0.00087	50-00-0*2
Hydroxymethylene		131.12	127.37	± 0.29	kJ/mol	30.02598 ± 0.00087	19710-56-6*2
Hydroxymethylene cation		971.9	968.2	± 1.4	kJ/mol	30.02543 ± 0.00087	135395-06-1*1
Isoformyl		217.25	217.64	± 0.69	kJ/mol	29.01804 ± 0.00086	71080-92-7*0
Hydroxyoxomethoxy		-360.34	-366.41	± 0.93	kJ/mol	61.0168 ± 0.0012	38330-85-7*0
3-Dioxiranone		-159.9	-162.7	± 1.5	kJ/mol	60.0089 ± 0.0012	94660-13-6*0
Carbonylbis(oxy) anion		-550.4	-552.4	± 1.4	kJ/mol	60.0094 ± 0.0012	16518-46-0*0
Methyl hydrocarbonate		-576.99	-592.55	± 0.87	kJ/mol	76.0514 ± 0.0019	7456-87-3*1
1,2,3-Trioxolane		-5.6	-23.3	± 1.5	kJ/mol	76.0514 ± 0.0019	6669-36-9*0
1-Methylethylidene		326.9	313.8	± 1.2	kJ/mol	42.0797 ± 0.0024	40852-89-9*1
1-Propenyl		280.27	269.45	± 0.76	kJ/mol	41.0718 ± 0.0024	6067-68-1*1
Cyclopropynyl		711.28	715.40	± 0.71	kJ/mol	37.0400 ± 0.0024	119178-99-3*0
n-Butyl anion		106.2	81.3	± 1.3	kJ/mol	57.1148 ± 0.0033	79431-01-9*0
sec-Butyl anion		103.4	78.9	± 1.3	kJ/mol	57.1148 ± 0.0033	79431-00-8*0
1,2-Butadienyl anion		255.7	246.2	± 1.1	kJ/mol	53.0830 ± 0.0032	65114-67-2*0
Neopentyl		70.0	40.3	± 1.3	kJ/mol	71.1408 ± 0.0041	3744-21-6*0
Trioxidanylium		1070.7	1064.4	± 1.4	kJ/mol	49.00559 ± 0.00090	74241-49-9*1
n-Hexane		-179.82	-198.48	± 0.32	kJ/mol	86.1754 ± 0.0049	110-54-3*500
n-Nonane		-176.26	-228.04	± 0.48	kJ/mol	128.2551 ± 0.0073	111-84-2*0
1-Hydroxyethylium		611.0	596.5	± 1.1	kJ/mol	45.0600 ± 0.0017	18682-96-7*2
2-Hydroxyethyl		-10.83	-23.46	± 0.93	kJ/mol	45.0605 ± 0.0017	4422-54-2*2
Ethoxy		1.39	-12.03	± 0.42	kJ/mol	45.0605 ± 0.0017	2154-50-9*0
Vinyl alcohol cation		778.7	767.4	± 1.3	kJ/mol	44.0520 ± 0.0017	57239-63-1*2
1-Hydroxyethylidene		70.08	59.57	± 0.86	kJ/mol	44.0526 ± 0.0017	30967-49-8*22
1-Hydroxyethenyl		121.32	114.94	± 0.83	kJ/mol	43.0446 ± 0.0016	81847-74-7*0
Oxiranylium		901.3	893.3	± 1.4	kJ/mol	43.0441 ± 0.0016	57789-76-1*2
C=O=C		653.0	657.3	± 1.5	kJ/mol	40.0208 ± 0.0016	12071-23-71
C=O=C		721.9	726.2	± 1.6	kJ/mol	40.0208 ± 0.0016	12071-23-72
Oxoethylidene		275.4	272.6	± 1.7	kJ/mol	42.0367 ± 0.0016	39920-84-8*2
Iodide			-56.824	± 0.090	kJ/mol	126.905019 ± 0.000030	20461-54-5*800
Dihydroxymethanide		-194.2	-203.2	± 1.8	kJ/mol	47.0339 ± 0.0010	61192-32-3*2
1-Hydroperoxyethyl		39.7	26.1	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-98-4*0
Formic acid cation		722.00	714.91	± 0.24	kJ/mol	46.0248 ± 0.0010	50614-05-6*1
Methyldioxirane		-40.45	-54.37	± 0.91	kJ/mol	60.0520 ± 0.0017	70308-85-9*0
Formyloxidanyl		-121.95	-125.30	± 0.55	kJ/mol	45.0174 ± 0.0010	16499-21-1*2
Hydrogen bromide			-120.50	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*800
1-Propene-1,2-diol		-311.3	-329.7	± 1.2	kJ/mol	74.0785 ± 0.0025	7333-03-1*1
1-Propene-1,2-diol		-293.1	-309.7	± 1.2	kJ/mol	74.0785 ± 0.0025	7333-03-1*2
1-Methylethenyl hydroperoxide		-63.4	-82.0	± 1.3	kJ/mol	74.0785 ± 0.0025	177944-34-2*1
(Formyloxy)methyl		-135.7	-143.8	± 1.3	kJ/mol	59.0440 ± 0.0017	3122-12-1*2
Carboxymethyl		-205.9	-215.3	± 1.2	kJ/mol	59.0440 ± 0.0017	2887-46-9*2
Dimethylamide		123.1	104.7	± 1.4	kJ/mol	44.0763 ± 0.0017	34285-60-4*0
Ethylideneamidogen		209.8	199.3	± 1.1	kJ/mol	42.0599 ± 0.0016	28445-33-2*0
(Methyleneamino)methyl		244.3	233.6	± 1.3	kJ/mol	42.0599 ± 0.0016	56391-78-7*0
Azide		193.63	190.12	± 0.91	kJ/mol	42.02077 ± 0.00021	14343-69-2*0
2-Aminoethenyl		325.6	315.4	± 1.3	kJ/mol	42.0599 ± 0.0016	176964-54-8*1
Bromo hypobromite		121.1	104.6	± 1.2	kJ/mol	175.8074 ± 0.0020	21308-80-5*0
2-Aziridinyl		361.0	348.8	± 1.7	kJ/mol	42.0599 ± 0.0016	23838-09-71
Diazirenide		454.9	452.2	± 1.5	kJ/mol	41.03267 ± 0.00082	130614-84-5*2
1H-Diazirin-3-yl		618.7	615.8	± 1.6	kJ/mol	41.03212 ± 0.00082	324529-57-9*1
1H-Triazirin-1-yl		586.0	584.2	± 2.0	kJ/mol	42.02022 ± 0.00021	912535-95-6*0
1H-Diazirene		405.1	398.1	± 1.4	kJ/mol	42.04006 ± 0.00082	157-23-3*0
Dioxidenium		1110.87	1107.98	± 0.11	kJ/mol	33.00619 ± 0.00060	12207-52-2*0
1,1,2-Trichloroethane		-135.6	-147.3	± 1.1	kJ/mol	133.4033 ± 0.0031	79-00-5*0
1,1,1,2-Tetrachloroethane		-144.4	-152.9	± 1.3	kJ/mol	167.8481 ± 0.0039	630-20-6*0
Pentachloroethyl		28.9	27.1	± 1.3	kJ/mol	201.2849 ± 0.0048	7094-17-9*0
Iodomethane			-12.15	± 0.18	kJ/mol	141.93899 ± 0.00083	74-88-4*590
Difluoromethylene		43.30	44.02	± 0.35	kJ/mol	50.00751 ± 0.00080	2154-59-8*1
Ethyl iodide		-9.40	-39.27	± 0.48	kJ/mol	155.9656 ± 0.0016	75-03-6*500
cis-1,2-Difluoroethene	$F/C=C\F$	-302.96	-309.72	± 0.83	kJ/mol	64.0341 ± 0.0016	1630-77-9*0
Fluoroethynyl		445.3	449.9	± 1.6	kJ/mol	43.0198 ± 0.0016	22533-50-2*0
Fluoro(fluorooxy)methylene		-134.8	-136.0	± 1.3	kJ/mol	66.00691 ± 0.00085	479587-30-9*2
Dibromophosgene		-97.93	-113.86	± 0.37	kJ/mol	187.8181 ± 0.0022	593-95-3*0
1,3,5-Hexatriynyl		1003.2	1010.6	± 2.3	kJ/mol	73.0721 ± 0.0048	88053-50-3*0
Chloryl hydride		197.7	191.2	± 1.6	kJ/mol	68.4594 ± 0.0011	174365-32-3*0
Benzene		50.79	49.25	± 0.21	kJ/mol	78.1118 ± 0.0048	71-43-2*500
o-Benzyne		468.25	459.33	± 0.86	kJ/mol	76.0960 ± 0.0048	462-80-6*0
m-Benzyne		527.5	519.0	± 1.2	kJ/mol	76.0960 ± 0.0048	1828-89-3*2
p-Benzyne		587.1	577.6	± 1.2	kJ/mol	76.0960 ± 0.0048	3355-34-8*2
Cycloheptane		-72.39	-117.89	± 0.52	kJ/mol	98.1861 ± 0.0057	291-64-5*0
Hydrogen difluoride		-198.5	-198.4	± 1.2	kJ/mol	39.004746 ± 0.000070	12528-21-1*1
1-Oxopropyl		-17.32	-29.81	± 0.93	kJ/mol	57.0712 ± 0.0024	15843-24-0*2
Propyn-1-ol		65.7	57.4	± 1.1	kJ/mol	56.0633 ± 0.0024	6175-54-8*0
Formylethynyl		468.5	470.4	± 1.3	kJ/mol	53.0394 ± 0.0024	277743-00-7*0
2-Cyclopropen-1-one		164.0	160.1	± 1.1	kJ/mol	54.0474 ± 0.0024	2961-80-0*0
Formamide enol		-130.6	-141.8	± 1.3	kJ/mol	45.04066 ± 0.00088	60100-09-6*1
Cyanovinylidene		581.8	584.3	± 1.2	kJ/mol	51.0468 ± 0.0024	70277-81-5*0
Isocyanovinylidene		697.1	700.4	± 1.4	kJ/mol	51.0468 ± 0.0024	737788-76-0*0
Isocyanoethene		285.32	278.82	± 0.92	kJ/mol	53.0627 ± 0.0024	14668-82-7*1
1-Cyanoethylidene		437.6	433.8	± 1.4	kJ/mol	53.0627 ± 0.0024	498544-34-6*1
Isocyanomethylene		583.1	584.4	± 1.6	kJ/mol	39.0361 ± 0.0016	78694-65-2*1
2-Methyl-2-cyclopropen-1-ylidene		448.1	441.9	± 1.2	kJ/mol	52.0746 ± 0.0032	185841-59-2*2
1,2,3-Butatrien-1-ylium		1425.9	1426.2	± 1.3	kJ/mol	51.0661 ± 0.0032	81932-79-8*1
But-1-en-3-yn-1-ide		419.9	418.7	± 1.2	kJ/mol	51.0672 ± 0.0032	119611-65-3*2
But-3-en-1-yn-1-ide		326.8	323.7	± 1.3	kJ/mol	51.0672 ± 0.0032	58870-47-6*2
Cyclobutenyl		337.3	324.8	± 1.2	kJ/mol	53.0825 ± 0.0032	24669-29-2*0
Propargyl chloride		186.7	180.8	± 1.3	kJ/mol	74.5086 ± 0.0026	624-65-7*0
Dioxosilane		-277.9	-279.3	± 2.0	kJ/mol	60.08430 ± 0.00067	7631-86-9*0
Dimethylsilane		-66.7	-88.2	± 1.1	kJ/mol	60.1704 ± 0.0017	1111-74-6*0
Trimethylsilyl		47.5	25.5	± 1.9	kJ/mol	73.1891 ± 0.0025	16571-41-8*0
Benzvalene		404.5	386.7	± 1.2	kJ/mol	78.1118 ± 0.0048	659-85-8*0
1-Ethynyl-2-propyn-1-ylidene		727.1	734.1	± 1.7	kJ/mol	62.0694 ± 0.0040	882068-94-2*1
1,2-Pentadien-4-yne		442.32	436.69	± 0.97	kJ/mol	64.0853 ± 0.0040	33555-85-0*0
2,4-Pentadiynyl		568.83	568.08	± 0.98	kJ/mol	63.0773 ± 0.0040	115236-82-3*0
Bromonium		924.4	913.6	± 3.0	kJ/mol	81.9193 ± 0.0010	36658-54-5*0
2-Naphthalenyl		416.9	397.3	± 1.3	kJ/mol	127.1626 ± 0.0080	10237-50-0*0
1-Naphthalenyl		418.2	398.6	± 1.3	kJ/mol	127.1626 ± 0.0080	2510-51-2*0
Aniline		108.83	86.82	± 0.72	kJ/mol	93.1265 ± 0.0048	62-53-3*0
Thiodioxy		199.2	197.1	± 1.3	kJ/mol	64.0648 ± 0.0060	164034-62-2*0
Sulfenic acid		-108.0	-114.2	± 1.1	kJ/mol	50.0813 ± 0.0060	62607-44-7*0
3,3-Dioxidedioxathiirane		-257.1	-265.2	± 1.4	kJ/mol	96.0636 ± 0.0061	1177730-84-5*2
Sulfate		-599.7	-608.4	± 1.8	kJ/mol	96.0647 ± 0.0061	14808-79-8*0
Difluoroaminylium		1157.82	1154.93	± 0.71	kJ/mol	52.002998 ± 0.000070	31685-31-1*2
(Z)-Difluorodiazene		78.5	72.9	± 2.1	kJ/mol	66.01029 ± 0.00014	13812-43-6*2
(E)-Difluorodiazene		84.2	78.9	± 2.3	kJ/mol	66.01029 ± 0.00014	13776-62-0*1
Dioxiranylidene		190.3	191.1	± 1.4	kJ/mol	44.00950 ± 0.00100	138832-57-2*0
Bifluoride		-68.0	-67.6	± 1.6	kJ/mol	39.005295 ± 0.000070	18130-74-01
Aminomethylene		245.9	238.1	± 1.5	kJ/mol	29.04126 ± 0.00083	35430-17-2*0
Chlorine chlorite		168.6	166.2	± 1.3	kJ/mol	102.9042 ± 0.0019	105206-44-8*3
Methyleneamidogen anion		192.85	189.09	± 0.88	kJ/mol	28.03387 ± 0.00082	28892-56-0*0
(Z)-Iminomethyl		294.53	291.04	± 0.89	kJ/mol	28.03332 ± 0.00082	54980-11-9*0
Aminomethylidyne		371.9	368.4	± 1.1	kJ/mol	28.03332 ± 0.00082	84654-89-7*0
Oxofluoronium		1342.66	1342.61	± 0.80	kJ/mol	34.99725 ± 0.00030	12763-67-6*0
(E)-Diazene cation		1132.53	1125.59	± 0.64	kJ/mol	30.02881 ± 0.00020	59952-06-6*0
Ethynylamidogen		395.32	393.29	± 0.96	kJ/mol	40.0440 ± 0.0016	73456-14-1*0
Methyleneoxonium		152.51	144.19	± 0.49	kJ/mol	32.04186 ± 0.00090	177788-17-9*0
(Z)-Diazene	$[H]/N=N\[H]$	228.80	221.67	± 0.59	kJ/mol	30.02936 ± 0.00020	15626-42-3*0
Hydroxymethylene anion		147.2	144.1	± 1.6	kJ/mol	30.02653 ± 0.00087	207914-87-2*1
Hydroxymethyliumylidene		986.01	987.65	± 0.83	kJ/mol	29.01749 ± 0.00086	60528-75-8*0
Isoformyl anion		55.7	58.4	± 1.8	kJ/mol	29.01859 ± 0.00086	81747-63-9*1
Carbonic acid		-602.24	-611.56	± 0.55	kJ/mol	62.0248 ± 0.0012	463-79-6*0
Peroxyformic acid		-265.2	-273.2	± 1.5	kJ/mol	62.0248 ± 0.0012	107-32-4*2
Oxygen cation monohydrate		1153.4	1147.9	± 3.3	kJ/mol	34.01413 ± 0.00062	31748-17-10
1,3-Propanediyl		319.3	307.1	± 1.3	kJ/mol	42.0797 ± 0.0024	32458-33-6*11
Hydrogen difluoride cation		1174.3	1171.3	± 1.5	kJ/mol	39.004198 ± 0.000070	126950-54-70
Propan-1-yl-3-ylidene		554.5	545.8	± 1.3	kJ/mol	41.0718 ± 0.0024	50457-59-52
1-Propenylidene		392.5	388.1	± 1.1	kJ/mol	40.0639 ± 0.0024	70277-78-0*1
Chlorine difluoride cation		998.9	996.7	± 1.7	kJ/mol	73.44896 ± 0.00090	32629-46-2*0
Cycloprop-2-enyl		490.35	485.80	± 0.58	kJ/mol	39.0559 ± 0.0024	28933-84-8*0
2-Propen-1-yl-3-ylidene		556.68	554.42	± 0.89	kJ/mol	39.0559 ± 0.0024	202744-74-9*0
Fluoride			-334.67	± 0.15	kJ/mol	18.99895178 ± 0.00000050	16984-48-8*800
2-Propynylidyne anion		540.80	545.57	± 0.75	kJ/mol	37.0406 ± 0.0024	82893-67-2*0
Deuterium atom		219.804	221.717	± 0.000	kJ/mol	2.01410177800 ± 0.00000000040	16873-17-9*0
t-Butylium		733.97	710.69	± 0.98	kJ/mol	57.1137 ± 0.0033	14804-25-2*0
Dioxosilane		-906.77	-911.75	± 0.63	kJ/mol	60.08430 ± 0.00067	7631-86-9*505
1,2-Butadienylium		1099.2	1089.9	± 1.2	kJ/mol	53.0820 ± 0.0032	65114-67-22
2-Hydroxy-1,1-dimethylethyl		-71.6	-96.5	± 1.4	kJ/mol	73.1137 ± 0.0033	5723-75-1*0
Vinylcyclopentadienyl		314.9	296.9	± 1.7	kJ/mol	91.1305 ± 0.0056	1201826-88-1*0
2,2-Dimethylbutane		-145.27	-185.70	± 0.75	kJ/mol	86.1754 ± 0.0049	75-83-2*0
n-Decane		-192.28	-249.03	± 0.75	kJ/mol	142.2817 ± 0.0081	124-18-5*0
Ethanol		-269.59	-277.35	± 0.20	kJ/mol	46.0684 ± 0.0017	64-17-5*500
Hydroxyaminiumyl		1161.1	1158.2	± 1.4	kJ/mol	31.01353 ± 0.00032	63559-88-6*0
Vinyl alcohol cation		786.66	775.44	± 0.80	kJ/mol	44.0520 ± 0.0017	57239-63-1*1
Vinoxy cation		1020.2	1013.2	± 1.5	kJ/mol	43.0441 ± 0.0016	35731-40-91
Vinoxide		-153.08	-160.14	± 0.53	kJ/mol	43.0452 ± 0.0016	35731-40-9*0
1-Hydroxyethenylium		841.7	834.9	± 1.4	kJ/mol	43.0441 ± 0.0016	41084-89-3*2
Oxiranyl anion		121.2	113.2	± 1.5	kJ/mol	43.0452 ± 0.0016	72722-59-9*2
COC vdW		589.7	598.5	± 1.5	kJ/mol	40.0208 ± 0.0016	12071-24-81
Oxirene		389.7	385.6	± 1.4	kJ/mol	42.0367 ± 0.0016	157-18-6*12
Oxywater		64.9	58.4	± 1.3	kJ/mol	34.01468 ± 0.00062	171363-09-0*0
Hydroxyamidogen		123.3	116.7	± 1.7	kJ/mol	32.02202 ± 0.00034	13940-32-4*2
Methanediol		-368.88	-381.82	± 0.74	kJ/mol	48.0413 ± 0.0010	463-57-0*2
Hydroxyaminylium		1019.5	1012.3	± 2.5	kJ/mol	32.02147 ± 0.00034	66097-71-0*1
Hydroxymethoxy anion		-373.82	-383.76	± 0.85	kJ/mol	47.0339 ± 0.0010	67899-36-9*2
Ethoxyoxoniumylidene		923.9	911.6	± 1.5	kJ/mol	61.0594 ± 0.0017	268728-77-4*1
Ethaneperoxolate		-120.32	-136.93	± 0.68	kJ/mol	61.0604 ± 0.0017	268728-75-2*3
Triiodide			-51.53	± 0.79	kJ/mol	380.713959 ± 0.000090	14900-04-0*800
Chlorosyl hydride		141.9	139.0	± 1.7	kJ/mol	52.46004 ± 0.00095	71572-35-5*0
Formyloxoniumylidene		1017.4	1014.0	± 1.4	kJ/mol	45.0169 ± 0.0010	54375-27-8*0
Dioxymethylene		364.0	361.7	± 2.4	kJ/mol	45.0174 ± 0.0010	438586-67-5*1
Aquachlorine cation		821.9	815.1	± 1.8	kJ/mol	53.46743 ± 0.00096	142599-65-3*0
Cyanate		-221.16	-221.38	± 0.53	kJ/mol	42.01739 ± 0.00086	661-20-1*0
Oxazirinyl		450.1	450.9	± 1.5	kJ/mol	42.01684 ± 0.00086	228850-18-8*0
2-Propene-1,2-diol		-295.3	-314.8	± 1.2	kJ/mol	74.0785 ± 0.0025	44169-27-9*11
2-Methoxy-2-oxoethyl		-202.9	-218.1	± 1.5	kJ/mol	73.0706 ± 0.0025	54668-31-4*1
(Acetyloxy)methyl		-200.1	-213.8	± 1.5	kJ/mol	73.0706 ± 0.0025	2887-49-2*1
Glyoxal		-207.82	-213.38	± 0.54	kJ/mol	58.0361 ± 0.0017	107-22-2*0
2-Hydrotrioxy cation		1298.4	1291.8	± 1.4	kJ/mol	49.00559 ± 0.00090	74241-49-90
Dimethylmethyleneammonium		697.1	672.1	± 1.3	kJ/mol	58.1018 ± 0.0025	28149-27-1*0
2-Methanidylidynehydrazin-2-ium-1-ide		281.9	279.1	± 1.4	kJ/mol	41.03267 ± 0.00082	947408-74-42
2-Methanidylidynehydrazin-2-ium-1-ide		518.6	516.1	± 1.6	kJ/mol	41.03267 ± 0.00082	947408-74-412
Isocyanamide		328.5	322.6	± 1.5	kJ/mol	42.04006 ± 0.00082	4702-38-9*0
Dioxyamidogen		240.4	233.8	± 1.8	kJ/mol	47.01348 ± 0.00061	71843-95-3*2
Trichloromethide		-123.2	-122.6	± 2.0	kJ/mol	118.3693 ± 0.0028	14478-07-0*0
2-Hydrotrioxy anion		27.4	21.6	± 1.4	kJ/mol	49.00669 ± 0.00090	89965-38-80
1,1,2,2-Tetrachloroethane		-146.7	-156.1	± 1.5	kJ/mol	167.8481 ± 0.0039	79-34-5*0
1,1,2,2-Tetrachloroethane		-172.8	-201.8	± 1.5	kJ/mol	167.8481 ± 0.0039	79-34-5*500
Pentachloroethane			-201.9	± 2.5	kJ/mol	202.2928 ± 0.0048	76-01-7*500
Trichloroethene			-48.7	± 1.5	kJ/mol	131.3874 ± 0.0031	79-01-6*590
Tetrachloroethene			-61.10	± 0.99	kJ/mol	165.8322 ± 0.0039	127-18-4*500
Trichloroethene		-10.9	-14.1	± 1.5	kJ/mol	131.3874 ± 0.0031	79-01-6*0
Bromodichloromethane		-34.8	-46.5	± 1.2	kJ/mol	163.8280 ± 0.0022	75-27-4*0
Diiodomethane		122.96	113.52	± 0.78	kJ/mol	267.83552 ± 0.00081	75-11-6*0
Difluorodibromomethane		-359.8	-377.8	± 1.3	kJ/mol	209.8155 ± 0.0022	75-61-6*0
Dichlorodibromomethane		28.3	12.4	± 1.2	kJ/mol	242.7241 ± 0.0028	594-18-3*0
Difluorobromomethane		-411.40	-424.59	± 0.47	kJ/mol	130.9194 ± 0.0013	1511-62-2*0
1,2-Difluoroethane		-434.39	-447.81	± 0.80	kJ/mol	66.0500 ± 0.0016	624-72-6*0
Fluoro(fluorooxy)methylene		-37.5	-39.1	± 1.4	kJ/mol	66.00691 ± 0.00085	479587-30-9*1
Benzenium		887.8	867.7	± 1.1	kJ/mol	79.1192 ± 0.0048	26812-57-7*0
Phenylium		1251.3	1238.2	± 1.6	kJ/mol	77.1034 ± 0.0048	17333-73-2*1
Benzylium		929.58	910.09	± 0.51	kJ/mol	91.1299 ± 0.0056	6711-19-9*0
Benzylidene		473.0	457.7	± 1.3	kJ/mol	90.1225 ± 0.0056	3101-08-4*1
Cycloheptatetraene		418.8	403.1	± 1.3	kJ/mol	90.1225 ± 0.0056	52783-93-4*2
2,5-Norbornadien-7-yl		480.2	459.2	± 1.7	kJ/mol	91.1305 ± 0.0056	35430-15-0*0
Pentalene		389.9	373.6	± 1.4	kJ/mol	102.1332 ± 0.0064	250-25-9*0
Dihydrogen fluoride anion		133.2	131.9	± 1.6	kJ/mol	21.01483 ± 0.00014	117339-92-1*1
Indenyl		299.2	279.2	± 1.6	kJ/mol	115.1519 ± 0.0072	71551-80-9*0
Benzoyl chloride			-157.10	± 0.26	kJ/mol	140.5667 ± 0.0057	98-88-4*500
Benzoyl chloride		-89.5	-104.8	± 1.2	kJ/mol	140.5667 ± 0.0057	98-88-4*0
Hexafluorobenzene		-942.55	-947.55	± 0.87	kJ/mol	186.0546 ± 0.0048	392-56-3*0
Chlorobenzene cation		942.61	928.68	± 0.61	kJ/mol	112.5561 ± 0.0049	55450-32-3*0
Chlorobenzene			11.36	± 0.59	kJ/mol	112.5566 ± 0.0049	108-90-7*500
m-Chlorophenyl		321.8	311.0	± 1.6	kJ/mol	111.5487 ± 0.0049	3474-40-6*0
p-Chlorophenyl		324.7	313.9	± 1.6	kJ/mol	111.5487 ± 0.0049	2396-00-1*0
o-Chlorophenyl		328.9	318.2	± 1.6	kJ/mol	111.5487 ± 0.0049	3474-42-8*0
Bromobenzene cation		995.1	973.6	± 1.3	kJ/mol	157.0074 ± 0.0049	55450-33-4*0
Iodobenzene		113.7	113.8	± 1.1	kJ/mol	204.0084 ± 0.0048	591-50-4*500
Nitrobenzene		82.5	62.5	± 1.3	kJ/mol	123.1094 ± 0.0049	98-95-3*0
3-Methylenecyclopropene cation		1181.8	1174.7	± 1.2	kJ/mol	52.0740 ± 0.0032	79105-72-9*0
1-Hydroxy-1-methylethyl cation		521.4	501.0	± 1.2	kJ/mol	59.0865 ± 0.0025	5131-95-30
1-Hydroxypropyl		-55.3	-73.0	± 1.1	kJ/mol	59.0871 ± 0.0025	5723-77-3*0
1-Oxopropyl		-19.1	-31.9	± 1.1	kJ/mol	57.0712 ± 0.0024	15843-24-0*1
1,1-Dibromoethene		130.6	110.2	± 1.6	kJ/mol	185.8453 ± 0.0026	593-92-0*0
Tribromoethene		169.7	145.0	± 1.6	kJ/mol	264.7413 ± 0.0034	598-16-3*0
1,1-Diiodoethene		225.1	217.0	± 1.6	kJ/mol	279.8462 ± 0.0016	57678-85-0*0
Triiodoethene		302.0	295.5	± 1.4	kJ/mol	405.7428 ± 0.0016	10065-29-9*0
1,3-Butadien-2-ol		-53.3	-70.3	± 1.5	kJ/mol	70.0898 ± 0.0032	59120-04-6*11
Cyclopropanone		30.65	19.22	± 0.96	kJ/mol	56.0633 ± 0.0024	5009-27-8*0
2-Formylethen-1-ide		27.4	20.6	± 2.5	kJ/mol	55.0559 ± 0.0024	135924-69-5*11
Ethenedione		14.5	17.0	± 1.2	kJ/mol	56.0202 ± 0.0017	4363-38-6*0
Peroxychlorite		-34.5	-33.1	± 1.8	kJ/mol	83.4514 ± 0.0013	852472-63-0*2
Formylamidogen		76.5	71.1	± 1.1	kJ/mol	44.03272 ± 0.00087	14753-22-1*0
Formaldonitrone		78.4	67.2	± 1.4	kJ/mol	45.04066 ± 0.00088	67353-84-8*0
2-Cyclopropen-1-imine		402.0	394.2	± 1.4	kJ/mol	53.0627 ± 0.0024	31589-17-0*0
1-Isocyanovinyl		519.1	517.3	± 1.4	kJ/mol	52.0547 ± 0.0024	321850-14-0*0
Peroxychlorous acid		95.4	89.4	± 2.0	kJ/mol	84.4588 ± 0.0013	177778-92-6*1
Vinylvinylidene		494.2	488.8	± 1.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*2
But-1-en-3-yn-1-ide		422.5	421.2	± 1.3	kJ/mol	51.0672 ± 0.0032	119611-65-3*1
Peroxynitrous acid		-0.12	-7.17	± 0.53	kJ/mol	63.01288 ± 0.00091	14691-52-2*2
Tetrahedryl anion		634.5	630.7	± 1.6	kJ/mol	51.0672 ± 0.0032	138805-00-2*0
Silicon carbide		739.3	744.3	± 2.3	kJ/mol	40.09620 ± 0.00085	409-21-2*0
Silicon carbide		-70.6	-71.6	± 1.5	kJ/mol	40.09620 ± 0.00085	409-21-2*501
Trifluorosilylium		-111.6	-114.4	± 1.8	kJ/mol	85.08016 ± 0.00030	38192-99-3*0
Silanide		69.3	63.7	± 1.3	kJ/mol	31.10987 ± 0.00037	15807-96-2*0
Chlorine fluoride cation		1165.52	1165.70	± 0.49	kJ/mol	54.45055 ± 0.00090	12432-44-9*0
Dimethylsilanone		-237.4	-252.9	± 2.3	kJ/mol	74.1539 ± 0.0017	47956-45-6*0
Ethylsilane		-12.8	-35.3	± 1.8	kJ/mol	60.1704 ± 0.0017	2814-79-1*0
Perchloric acid		11.7	0.2	± 1.3	kJ/mol	100.4582 ± 0.0015	7601-90-3*0
Hydroxysilyl anion		-219.2	-227.2	± 2.1	kJ/mol	47.10927 ± 0.00047	78450-47-2*1
Triprismane		576.0	556.7	± 1.3	kJ/mol	78.1118 ± 0.0048	650-42-0*0
Propargylallene		431.5	419.9	± 1.4	kJ/mol	78.1118 ± 0.0048	33142-15-3*3
1,4-Pentadiyne		460.3	454.7	± 1.1	kJ/mol	64.0853 ± 0.0040	24442-69-1*0
Nitrosodioxaziridine		413.6	407.6	± 1.8	kJ/mol	76.01168 ± 0.00091	132871-99-9*1
Biphenyl		207.0	178.8	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*0
Diacetylide		460.98	466.02	± 0.96	kJ/mol	49.0513 ± 0.0032	59012-21-4*0
Trioxidaniumyl		925.5	916.3	± 1.4	kJ/mol	50.01353 ± 0.00091	161321-37-5*2
Sulfinyl hydride		-40.7	-47.6	± 1.2	kJ/mol	50.0813 ± 0.0060	25540-60-7*0
Oxygen anion monohydrate		-238.9	-244.2	± 3.0	kJ/mol	34.01523 ± 0.00062	31748-17-1*0
Sulfuric acid			-886.51	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*906
Bisulfite cation		554.0	545.3	± 1.3	kJ/mol	81.0716 ± 0.0061	43637-78-1*0
Sulfur tetraoxide		-228.2	-235.1	± 2.0	kJ/mol	96.0636 ± 0.0061	12772-98-4*11
Fluorohydrochlorine cation		975.3	972.3	± 2.0	kJ/mol	55.45849 ± 0.00090	70110-64-4*0
Thioformaldehyde		121.3	117.6	± 2.0	kJ/mol	46.0926 ± 0.0061	865-36-1*2
Dimethylsulfoxide		-131.91	-150.55	± 0.57	kJ/mol	78.1344 ± 0.0062	67-68-5*0
Carbon disulfide		115.90	116.69	± 0.68	kJ/mol	76.1427 ± 0.0120	75-15-0*0
Hydrogen atom		-18.9	-21.4	± 4.3	kJ/mol	1.007940 ± 0.000070	12385-13-6*1002001
Hydrogen atom		-30.3	-32.7	± 5.3	kJ/mol	1.007940 ± 0.000070	12385-13-6*1002004
Iminomethide		237.4	233.5	± 1.8	kJ/mol	28.03387 ± 0.00082	90623-30-6*1
Diiodide		-178.13	-180.72	± 0.48	kJ/mol	253.809489 ± 0.000060	12190-71-5*0
Trifluoromethide		-637.7	-639.6	± 1.8	kJ/mol	69.00646 ± 0.00080	54128-17-5*0
Cyanogen iodide anion		86.5	88.9	± 8.1	kJ/mol	152.92246 ± 0.00080	1356929-44-6*0
Methanol		-235.20	-238.54	± 0.15	kJ/mol	32.04186 ± 0.00090	67-56-1*500
Dihydrogen cation		1488.364	1488.480	± 0.000	kJ/mol	2.01533 ± 0.00014	12184-90-6*0
Formaldehyde cation		944.862	941.241	± 0.096	kJ/mol	30.02543 ± 0.00087	54288-05-0*0
Isoformyl anion		267.4	268.0	± 1.6	kJ/mol	29.01859 ± 0.00086	81747-63-9*2
Azanylium		1266.56	1264.49	± 0.11	kJ/mol	16.02207 ± 0.00016	15194-15-7*0
1,3-Propanediyl		358.7	343.8	± 1.4	kJ/mol	42.0797 ± 0.0024	32458-33-6*22
Diazenide		175.7	176.7	± 1.6	kJ/mol	29.02197 ± 0.00016	71004-29-0*100
Allene cation		1132.29	1125.14	± 0.22	kJ/mol	40.0633 ± 0.0024	65812-77-3*0
2-Propenylidene		417.6	410.0	± 1.5	kJ/mol	40.0639 ± 0.0024	19527-08-3*11
2-Propenylidene		452.76	445.63	± 0.90	kJ/mol	40.0639 ± 0.0024	19527-08-3*2
Cycloprop-1-enylide		373.7	369.3	± 1.7	kJ/mol	39.0565 ± 0.0024	80251-77-0*0
2-Cyclopropen-1-ylium-1-yl		1381.9	1380.8	± 1.1	kJ/mol	38.0474 ± 0.0024	85398-75-0*0
Propynylidene		597.9	599.6	± 1.2	kJ/mol	38.0480 ± 0.0024	67152-18-5*3
Oxochloronium		1150.86	1150.70	± 0.66	kJ/mol	51.45155 ± 0.00095	12301-79-0*0
Propenediylidene		796.3	797.5	± 1.4	kJ/mol	38.0480 ± 0.0024	60731-11-5*0
n-Butylium		827.7	803.4	± 1.1	kJ/mol	57.1137 ± 0.0033	25453-90-1*0
Ammonium fluoride		-452.48	-467.05	± 0.38	kJ/mol	37.03690 ± 0.00029	12125-01-8*500
2-Butynylium		1085.9	1077.7	± 1.3	kJ/mol	53.0820 ± 0.0032	64235-83-2*2
1-Methylene-2-propenyl anion		256.5	246.6	± 1.3	kJ/mol	53.0830 ± 0.0032	64480-63-3*0
1,3-Butadienyl anion		265.4	255.1	± 1.5	kJ/mol	53.0830 ± 0.0032	65114-68-3*0
Hypochlorous acid			-125.522	± 0.050	kJ/mol	52.46004 ± 0.00095	7790-92-3*1000
Ethyloxoniumyl		783.4	766.4	± 1.7	kJ/mol	46.0679 ± 0.0017	34480-55-2*0
1-Hydroxyethyl		-41.32	-54.79	± 0.91	kJ/mol	45.0605 ± 0.0017	2348-46-1*2
1-Hydroxyethylium		608.90	594.48	± 0.37	kJ/mol	45.0600 ± 0.0017	18682-96-7*0
2-Hydroxyethylium		1019.3	1006.5	± 1.5	kJ/mol	45.0600 ± 0.0017	38607-31-7*3
Ethyloxoniumylidene		988.8	975.1	± 1.5	kJ/mol	45.0600 ± 0.0017	54387-07-4*0
Acetaldehyde cation		832.13	822.15	± 0.22	kJ/mol	44.0520 ± 0.0017	36505-03-0*0
1-Hydroxyethylidene		185.0	175.6	± 1.4	kJ/mol	44.0526 ± 0.0017	30967-49-8*1
Methoxymethylene		245.4	235.9	± 1.4	kJ/mol	44.0526 ± 0.0017	19527-10-7*1
Dioxymethylidyne		299.8	301.1	± 1.7	kJ/mol	44.00950 ± 0.00100	791121-04-5*0
Dioxygen		94.410	94.383	± 0.000	kJ/mol	31.99880 ± 0.00060	7782-44-7*2
Oxiranylium		1233.6	1226.6	± 1.6	kJ/mol	43.0441 ± 0.0016	57789-76-1*1
Oxiranyl anion		141.0	134.9	± 1.6	kJ/mol	43.0452 ± 0.0016	72722-59-9*1
Acetic acid			-485.09	± 0.27	kJ/mol	60.0520 ± 0.0017	64-19-7*800
Ketenyl anion		-48.43	-47.50	± 0.82	kJ/mol	41.0293 ± 0.0016	64066-01-9*0
Dicarbon monoxide anion		154.18	157.82	± 0.83	kJ/mol	40.0213 ± 0.0016	87191-88-6*0
Dicarbon monoxide		440.22	444.55	± 0.83	kJ/mol	40.0208 ± 0.0016	12071-23-7*2
COC vdW		726.2	734.6	± 1.7	kJ/mol	40.0208 ± 0.0016	12071-24-82
Hydrogen fluoride			-321.83	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*818
C=O-C cation		1585.8	1592.9	± 2.7	kJ/mol	40.0203 ± 0.0016	83483-98-1*1
C=O=C anion		550.3	554.1	± 1.7	kJ/mol	40.0213 ± 0.0016	87191-88-60
Oxirene cation		1106.2	1102.5	± 1.8	kJ/mol	42.0361 ± 0.0016	94664-69-4*0
Ethynol		95.32	92.83	± 0.73	kJ/mol	42.0367 ± 0.0016	32038-79-2*0
Hydroxyethenylidene		418.2	414.8	± 2.4	kJ/mol	42.0367 ± 0.0016	70277-80-4*11
Oxoethylidene		265.9	262.6	± 1.6	kJ/mol	42.0367 ± 0.0016	39920-84-8*11
Hydrogen fluoride			-321.89	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*820
Ammonium nitrate		-350.18	-365.14	± 0.18	kJ/mol	80.04344 ± 0.00095	6484-52-2*500
1-Hydroperoxyethylium		841.6	829.5	± 1.7	kJ/mol	61.0594 ± 0.0017	126898-98-411
Ammonia			-80.884	± 0.053	kJ/mol	17.03056 ± 0.00022	7664-41-7*1000
Formic acid cation		723.8	716.8	± 1.2	kJ/mol	46.0248 ± 0.0010	50614-05-6*2
Formic acid anion		-256.1	-262.3	± 1.8	kJ/mol	46.0259 ± 0.0010	19066-82-1*1
2-Ethylidenedioxidan-2-ium-1-ide		65.71	53.05	± 0.63	kJ/mol	60.0520 ± 0.0017	68941-70-8*1
Isocyanic acid cation		1003.01	1000.35	± 0.49	kJ/mol	43.02423 ± 0.00086	444010-28-0*0
Fulminic acid cation		1215.7	1212.9	± 1.3	kJ/mol	43.02423 ± 0.00086	114766-65-3*0
Fluorosyl fluoride		192.8	193.3	± 2.3	kJ/mol	53.99621 ± 0.00030	86825-57-2*1
Triiodide		-254.3	-257.5	± 3.4	kJ/mol	380.713959 ± 0.000090	14900-04-0*0
1,2-Ethenediol		-253.9	-266.2	± 1.3	kJ/mol	60.0520 ± 0.0017	1571-60-4*2
Acetyl chloride			-272.06	± 0.39	kJ/mol	78.4973 ± 0.0019	75-36-5*500
Methyl formate			-388.45	± 0.64	kJ/mol	60.0520 ± 0.0017	107-31-3*500
Ethyl formate		-355.3	-374.4	± 1.4	kJ/mol	74.0785 ± 0.0025	109-94-4*2
Hydroxyimidogen		217.89	215.01	± 0.78	kJ/mol	31.01408 ± 0.00032	35337-59-8*0
2-Cyclopropyn-1-ylidene		898.4	905.3	± 1.5	kJ/mol	36.0321 ± 0.0024	102508-15-6*1
Dimethyldioxirane		-88.2	-108.0	± 1.3	kJ/mol	74.0785 ± 0.0025	74087-85-7*0
Acetoxy		-182.02	-190.84	± 0.76	kJ/mol	59.0440 ± 0.0017	13799-69-4*1
Trihydrogen dioxide anion		-487.4	-495.7	± 1.1	kJ/mol	35.02317 ± 0.00064	12501-19-8*0
Nitrous acid		-71.38	-77.73	± 0.26	kJ/mol	47.01348 ± 0.00061	7782-77-6*2
2-Methoxy-2-oxoethyl		-172.8	-188.0	± 1.7	kJ/mol	73.0706 ± 0.0025	54668-31-4*2
2-Cyclopropyn-1-ylium-1-yl		1939.2	1947.1	± 1.3	kJ/mol	36.0316 ± 0.0024	154702-35-9*0
(Acetyloxy)methyl		-173.8	-186.8	± 1.7	kJ/mol	73.0706 ± 0.0025	2887-49-2*2
Hydroxyoxoethenyl		24.5	22.7	± 1.7	kJ/mol	57.0281 ± 0.0017	702699-39-6*0
Isocyanomethylidyne		672.2	676.5	± 1.7	kJ/mol	38.0281 ± 0.0016	53590-27-5*0
Cyanomethylidyne		684.7	689.1	± 2.1	kJ/mol	38.0281 ± 0.0016	4120-02-9*0
Cyanoaminylium		1363.2	1360.9	± 1.3	kJ/mol	41.03157 ± 0.00082	205443-18-1*1
Cyanoamidogen anion		69.75	66.74	± 0.72	kJ/mol	41.03267 ± 0.00082	67131-47-9*0
Diazomethylium		1395.8	1394.1	± 1.3	kJ/mol	41.03157 ± 0.00082	271249-81-1*1
Diazomethanide		305.20	302.10	± 0.76	kJ/mol	41.03267 ± 0.00082	100840-43-5*0
2-Methyliumylidynehydrazin-2-ium-1-ide		1544.2	1542.5	± 1.7	kJ/mol	41.03157 ± 0.00082	947408-73-32
2-Methyliumylidynehydrazin-2-ium-1-ide		1563.1	1561.5	± 1.5	kJ/mol	41.03157 ± 0.00082	947408-73-31
Nitrilomethylimidogen		728.8	725.7	± 2.4	kJ/mol	41.03212 ± 0.00082	324529-58-0*1
Methanediimine		153.2	146.5	± 1.3	kJ/mol	42.04006 ± 0.00082	151-51-9*0
Tetrachloromethane		-104.54	-123.95	± 0.41	kJ/mol	153.8215 ± 0.0037	56-23-5*500
Dichloromethylene anion		75.98	78.26	± 0.77	kJ/mol	82.9166 ± 0.0020	118364-73-1*0
Dichloromethylium		895.4	892.2	± 1.2	kJ/mol	83.9235 ± 0.0020	56932-33-3*0
Dichloromethide		-40.7	-42.4	± 2.0	kJ/mol	83.9246 ± 0.0020	32180-91-9*0
1,3-Butadiyne-1,4-diyl		1052.24	1062.21	± 0.64	kJ/mol	48.0428 ± 0.0032	78015-07-3*0
Chloromethylium		962.4	958.5	± 1.2	kJ/mol	49.4787 ± 0.0012	59000-00-9*0
Chloromethylene		346.24	346.54	± 0.89	kJ/mol	48.4713 ± 0.0012	2108-20-5*1
1,2-Dichloroethane			-165.64	± 0.56	kJ/mol	98.9586 ± 0.0024	107-06-2*500
1,1-Dichloroethane			-163.73	± 0.48	kJ/mol	98.9586 ± 0.0024	75-34-3*500
1,1,2-Trichloroethane			-187.6	± 1.1	kJ/mol	133.4033 ± 0.0031	79-00-5*500
Pentachloroethane		-150.5	-156.4	± 1.9	kJ/mol	202.2928 ± 0.0048	76-01-7*0
Hydroxydioxonitrate		-193.2	-197.5	± 2.4	kJ/mol	63.01343 ± 0.00091	58875-09-5*0
Chloroform			-130.82	± 0.42	kJ/mol	119.3767 ± 0.0028	67-66-3*590
Fluoronium		1490.1	1491.4	± 1.9	kJ/mol	21.01373 ± 0.00014	12206-67-6*1
Chlorodibromomethane		22.0	3.2	± 3.5	kJ/mol	208.2793 ± 0.0023	124-48-1*0
Azidonitrene		692.1	687.5	± 1.4	kJ/mol	56.02696 ± 0.00028	147363-92-6*2
Bromochloromethane		-28.2	-42.3	± 1.3	kJ/mol	129.3833 ± 0.0016	74-97-5*0
Fluoromethylene		148.40	148.69	± 0.43	kJ/mol	32.01704 ± 0.00080	13453-52-6*0
Ethyl iodide		8.71	-7.16	± 0.48	kJ/mol	155.9656 ± 0.0016	75-03-6*0
Dihydrogen fluoride anion		-257.0	-260.1	± 1.9	kJ/mol	21.01483 ± 0.00014	117339-92-12
1,2-Dibromoacetylene		346.5	335.6	± 2.0	kJ/mol	183.8294 ± 0.0026	624-61-3*0
Fluoro(fluorooxy)methylene		-97.5	-95.6	± 1.6	kJ/mol	66.00691 ± 0.00085	479587-30-9*101
Fluorooxomethylium		724.9	724.6	± 1.2	kJ/mol	47.00795 ± 0.00085	38264-00-5*0
Fluoroisoformyl		-37.8	-32.4	± 1.6	kJ/mol	47.00850 ± 0.00085	1871-24-50
Nitronium		961.79	958.23	± 0.20	kJ/mol	46.00499 ± 0.00060	14522-82-8*0
Benzene cation		992.59	976.12	± 0.21	kJ/mol	78.1113 ± 0.0048	34504-50-2*0
Chlorohydrofluorine cation		1000.8	998.1	± 2.1	kJ/mol	55.45849 ± 0.00090	70110-63-3*0
Chlorosyl chloride		134.5	133.2	± 1.4	kJ/mol	86.9048 ± 0.0018	86825-56-1*0
Benzocyclopropene		396.0	379.6	± 1.5	kJ/mol	90.1225 ± 0.0056	4646-69-9*2
3-Methylphenyl		324.5	306.4	± 1.2	kJ/mol	91.1305 ± 0.0056	3474-41-7*0
2-Methylphenyl		324.5	306.5	± 1.2	kJ/mol	91.1305 ± 0.0056	22904-44-5*0
4-Methylphenyl		327.2	309.3	± 1.2	kJ/mol	91.1305 ± 0.0056	2396-02-3*0
Peroxyimidogen		405.4	403.4	± 1.9	kJ/mol	46.00554 ± 0.00060	60488-31-50
Indenylium		1030.2	1010.7	± 2.0	kJ/mol	115.1513 ± 0.0072	12203-21-3*2
Benzoic acid		-367.32	-384.74	± 0.17	kJ/mol	122.1213 ± 0.0056	65-85-0*500
2,3-Dimethylbenzaldehyde		-65.7	-93.7	± 2.4	kJ/mol	134.1751 ± 0.0072	5779-93-1*0
(2,3-dimethylphenyl)oxomethyl		83.3	60.5	± 2.6	kJ/mol	133.1672 ± 0.0072	104680-89-90
m-Chlorophenide		172.5	162.3	± 1.5	kJ/mol	111.5492 ± 0.0049	77748-34-6*0
p-Chlorophenide		179.5	169.1	± 1.5	kJ/mol	111.5492 ± 0.0049	77748-42-6*0
o-Chlorophenide		158.7	148.7	± 1.5	kJ/mol	111.5492 ± 0.0049	72863-53-7*0
Ethylene cation		1075.23	1068.01	± 0.11	kJ/mol	28.0526 ± 0.0016	34470-02-5*0
2-Oxopropylium		784.8	771.0	± 1.7	kJ/mol	57.0707 ± 0.0024	54088-52-7*0
Hydrogen difluoride		-187.4	-187.1	± 1.6	kJ/mol	39.004746 ± 0.000070	12528-21-1*2
Glycine		-508.27	-528.37	± 0.20	kJ/mol	75.0666 ± 0.0017	56-40-6*511
Oxadiazirene		351.7	349.9	± 1.7	kJ/mol	44.01288 ± 0.00033	227934-45-4*0
2,3-Butanedione		-310.65	-327.21	± 0.62	kJ/mol	86.0892 ± 0.0033	431-03-8*0
1,2-Dibromoethane		-11.5	-38.3	± 1.2	kJ/mol	187.8612 ± 0.0026	106-93-4*0
Chlorine oxide peroxide		226.8	227.7	± 2.2	kJ/mol	83.4509 ± 0.0013	141801-67-4*100
Dimethylketene		-73.3	-88.2	± 1.2	kJ/mol	70.0898 ± 0.0032	598-26-5*0
2-Methyloxirene		344.0	334.0	± 1.8	kJ/mol	56.0633 ± 0.0024	2835-41-8*11
NON		545.5	542.6	± 1.7	kJ/mol	44.01288 ± 0.00033	227934-46-5*0
3-Oxo-1-propenylium		1185.6	1179.7	± 3.0	kJ/mol	55.0548 ± 0.0024	101705-90-2*111
(Hydroxyimino)methyl		250.2	244.0	± 1.8	kJ/mol	44.03272 ± 0.00087	206442-92-4*1
Aminohydroxymethylene		-22.4	-33.0	± 1.6	kJ/mol	45.04066 ± 0.00088	160720-48-9*21
1-Isocyanoethylidene		545.6	540.8	± 1.6	kJ/mol	53.0627 ± 0.0024	498544-34-61
3-Imino-2-propen-1-ylidene		571.9	566.9	± 1.6	kJ/mol	53.0627 ± 0.0024	916765-05-4*21
2-(Methylidyneamino)ethenyl		634.5	629.8	± 1.6	kJ/mol	53.0627 ± 0.0024	123416-74-0*21
Azete		469.6	461.4	± 1.5	kJ/mol	53.0627 ± 0.0024	287-24-1*0
1-Chloro ozone		226.3	223.1	± 2.3	kJ/mol	83.4509 ± 0.0013	141801-66-3*101
Dioxygenyl ion monohydrate		829.1	822.0	± 2.0	kJ/mol	50.01353 ± 0.00091	11083-61-7*0
2-Cyanovinylium		1517.3	1515.1	± 1.8	kJ/mol	52.0542 ± 0.0024	85398-67-0*21
2-Cyanovinyl anion		263.8	260.8	± 1.8	kJ/mol	52.0553 ± 0.0024	85398-67-02
2-Isocyanovinyl		543.3	541.3	± 1.7	kJ/mol	52.0547 ± 0.0024	225798-14-1*1
3-Oxo-1,2-propadienylidene		330.5	336.4	± 1.8	kJ/mol	52.0315 ± 0.0024	11127-17-6*0
Vinylacetylene cation		1221.8	1215.4	± 1.1	kJ/mol	52.0740 ± 0.0032	59699-48-8*0
Bicyclo[1.1.0]but-2-ylium-1-yl		1287.1	1278.1	± 1.4	kJ/mol	52.0740 ± 0.0032	78525-41-40
3-Methylene-1-cyclopropen-1-yl anion		417.4	413.6	± 1.6	kJ/mol	51.0672 ± 0.0032	117469-28-00
2-Cyclopropen-1-ylidenemethyl		635.8	632.7	± 1.3	kJ/mol	51.0666 ± 0.0032	127611-25-0*0
Fulvenone		117.3	107.1	± 1.6	kJ/mol	92.0954 ± 0.0048	4727-22-4*0
Silicon cation		1236.86	1240.99	± 0.56	kJ/mol	28.08495 ± 0.00030	14067-07-3*0
Disilicon		587.5	591.3	± 1.6	kJ/mol	56.17100 ± 0.00060	12597-35-2*0
Fluorosilyliumylidene		651.11	652.24	± 0.98	kJ/mol	47.08335 ± 0.00030	12518-09-1*0
Disiloxane		-330.3	-347.3	± 2.3	kJ/mol	78.21804 ± 0.00079	13597-73-4*0
Iodotrimethylsilane		-189.7	-214.4	± 2.1	kJ/mol	200.0935 ± 0.0025	16029-98-4*0
Fluorochlorate		-256.03	-255.43	± 0.81	kJ/mol	54.45165 ± 0.00090	12272-56-9*0
1,2,3,5-Hexatetraene		391.8	380.0	± 1.6	kJ/mol	78.1118 ± 0.0048	60239-33-0*1
1,2,3-Pentatriene		302.7	290.4	± 1.4	kJ/mol	66.1011 ± 0.0040	62018-46-6*0
(Z)-1-Methylallyl	$C/C=C\[CH2]$	154.76	137.37	± 0.99	kJ/mol	55.0984 ± 0.0032	98705-00-1*0
2,4-Cyclopentadien-1-ylidene		526.2	517.2	± 1.1	kJ/mol	64.0853 ± 0.0040	4729-01-5*1
Ethylammonium		593.8	568.1	± 1.4	kJ/mol	46.0911 ± 0.0017	16999-99-8*0
Anthracene		255.89	226.72	± 0.88	kJ/mol	178.2292 ± 0.0112	120-12-7*0
Helium hydride cation		1350.148	1348.258	± 0.000	kJ/mol	5.009993 ± 0.000070	17009-49-3*0
Monosulfur anion		76.43	78.48	± 0.14	kJ/mol	32.0665 ± 0.0060	14337-03-2*0
Dibromide		-197.0	-211.1	± 2.3	kJ/mol	159.8085 ± 0.0020	12595-70-9*0
Thiozone		144.28	142.91	± 0.71	kJ/mol	96.1980 ± 0.0180	12597-03-4*0
Hydrosulfide		-80.52	-80.52	± 0.18	kJ/mol	33.0745 ± 0.0060	15035-72-0*0
Hydrogen chloride			-166.990	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*800
Sulfuric acid			-895.15	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*898
Hydrogen sulfate		-944.0	-954.4	± 1.4	kJ/mol	97.0721 ± 0.0061	14996-02-2*0
Hydrogen fluoride			-321.69	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*815
Dioxoperoxysulfate		-502.6	-506.5	± 2.0	kJ/mol	96.0641 ± 0.0061	103613-08-7*1
Dimethyl sulfide		-63.11	-64.71	± 0.33	kJ/mol	62.1350 ± 0.0062	75-18-3*500
(Methylthio)methyl		149.5	137.8	± 1.4	kJ/mol	61.1271 ± 0.0062	31533-72-9*0
Hydrogen atom		-22.3	-25.6	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1001001
Hydrogen atom		-33.4	-36.7	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1001004
Propylidene		355.7	340.4	± 2.0	kJ/mol	42.0797 ± 0.0024	6700-78-3*21
Cyclopropylium		1101.57	1088.76	± 0.73	kJ/mol	41.0713 ± 0.0024	1724-43-2*200
Propyne cation		1192.69	1186.97	± 0.38	kJ/mol	40.0633 ± 0.0024	34526-53-9*0
Cyclopropylidene		544.8	536.0	± 1.5	kJ/mol	40.0639 ± 0.0024	2143-70-6*2
Iminomethide		252.6	248.9	± 1.8	kJ/mol	28.03387 ± 0.00082	90623-30-6*2
Aminyliumyl		1659.04	1659.97	± 0.23	kJ/mol	15.014131 ± 0.000099	19067-62-0*0
Propynylidene cation		1409.62	1412.18	± 0.82	kJ/mol	38.0474 ± 0.0024	75123-91-0*0
Propynylidene		597.6	599.4	± 1.1	kJ/mol	38.0480 ± 0.0024	67152-18-5*4
Propadienylidenide		381.20	382.10	± 0.40	kJ/mol	38.0485 ± 0.0024	109292-49-1*0
1,2-Propadien-1-ylium-1-yl		1561.6	1562.8	± 1.4	kJ/mol	38.0474 ± 0.0024	110714-00-6*0
Hydrogen cyanide cation		1442.54	1442.07	± 0.20	kJ/mol	27.02483 ± 0.00081	12601-62-6*0
Diazenide		347.5	344.6	± 1.6	kJ/mol	29.02197 ± 0.00016	71004-29-0*1
Hydrofluorate ion		-75.6	-75.1	± 1.8	kJ/mol	20.006892 ± 0.000070	37249-79-9*0
Dihydrogen fluoride		-55.9	-54.9	± 1.6	kJ/mol	21.01428 ± 0.00014	12592-22-2*1
Perchlorate		-263.9	-272.8	± 2.1	kJ/mol	99.4508 ± 0.0015	14797-73-0*0
n-Pentane		-155.81	-172.78	± 0.29	kJ/mol	72.1488 ± 0.0041	109-66-0*500
iso-Pentane			-178.17	± 0.39	kJ/mol	72.1488 ± 0.0041	78-78-4*500
neo-Pentane			-189.52	± 0.38	kJ/mol	72.1488 ± 0.0041	463-82-1*500
Hydroxylamine		-15.3	-25.9	± 1.4	kJ/mol	33.02996 ± 0.00037	7803-49-8*2
Cyclopentane			-104.63	± 0.38	kJ/mol	70.1329 ± 0.0041	287-92-3*590
Hydrogen peroxide cation		931.06	924.21	± 0.98	kJ/mol	34.01413 ± 0.00062	12325-10-9*2
[1.1.1]Propellane		378.6	361.0	± 1.5	kJ/mol	66.1011 ± 0.0040	35634-10-7*2
Hydroxylamine cation		857.7	847.9	± 1.6	kJ/mol	33.02941 ± 0.00037	62675-55-2*0
2-Methylpentane		-134.45	-173.71	± 0.73	kJ/mol	86.1754 ± 0.0049	107-83-5*0
3-Methylpentane		-131.89	-171.40	± 0.76	kJ/mol	86.1754 ± 0.0049	96-14-0*0
2,3-Dimethylbutane		-136.48	-177.58	± 0.81	kJ/mol	86.1754 ± 0.0049	79-29-8*0
Cyclohexane		-131.78	-155.91	± 0.28	kJ/mol	84.1595 ± 0.0049	110-82-7*500
Dihydrooxooxygen cation		994.9	988.2	± 1.6	kJ/mol	34.01413 ± 0.00062	177329-59-8*0
1,5-Hexadiene		108.52	83.93	± 0.39	kJ/mol	82.1436 ± 0.0049	592-42-7*0
1-Hydroxyethyl		-42.70	-56.13	± 0.46	kJ/mol	45.0605 ± 0.0017	2348-46-1*0
Nitrilomethylium		1783.13	1786.61	± 0.48	kJ/mol	26.01689 ± 0.00080	12539-57-0*0
2-Hydroxyethyl		-5.8	-18.2	± 1.5	kJ/mol	45.0605 ± 0.0017	4422-54-2*3
Nitrogen hydride oxide		72.2	61.0	± 1.3	kJ/mol	33.02996 ± 0.00037	38544-48-8*0
Tetraoxidanyl		2.1	0.4	± 2.9	kJ/mol	65.0055 ± 0.0012	69696-93-1*100
1-Hydroxyethenyl anion		15.1	7.8	± 2.1	kJ/mol	43.0452 ± 0.0016	112539-13-6*22
Aminooxy cation		945.98	938.85	± 0.76	kJ/mol	32.02147 ± 0.00034	51375-41-80
Dicarbon monoxide cation		1433.9	1439.0	± 2.1	kJ/mol	40.0203 ± 0.0016	12287-08-0*0
(E)-Diazene anion		265.6	258.7	± 2.0	kJ/mol	30.02991 ± 0.00020	59952-06-60
C=O-C cation		1816.8	1820.9	± 2.0	kJ/mol	40.0203 ± 0.0016	83483-98-1*2
Oxirene anion		288.2	285.2	± 2.2	kJ/mol	42.0372 ± 0.0016	157-18-60
Hydroxyethenylidene		302.1	300.7	± 2.1	kJ/mol	42.0367 ± 0.0016	70277-80-4*2
Oxoethylidene		261.1	258.3	± 1.1	kJ/mol	42.0367 ± 0.0016	39920-84-8*1
Methanediol		-378.49	-391.58	± 0.62	kJ/mol	48.0413 ± 0.0010	463-57-0*0
Ethynylene cation		1964.95	1971.54	± 0.40	kJ/mol	24.0209 ± 0.0016	12595-79-8*0
Ethoxyoxoniumylidene		962.5	946.1	± 1.6	kJ/mol	61.0594 ± 0.0017	268728-77-4*22
Hydroxyaminylium		1048.5	1041.3	± 2.6	kJ/mol	32.02147 ± 0.00034	66097-71-0*2
2-Hydroperoxyethylium		1000.0	989.1	± 1.6	kJ/mol	61.0594 ± 0.0017	84824-62-41
Hydroxyamidogen anion		90.7	84.8	± 2.8	kJ/mol	32.02257 ± 0.00034	66097-71-00
Formic acid anion		-241.2	-246.9	± 1.9	kJ/mol	46.0259 ± 0.0010	19066-82-1*2
Trichlorine cation		1056.6	1055.5	± 1.4	kJ/mol	106.3576 ± 0.0027	33088-85-6*2
Dioxirane cation		1050.8	1043.2	± 1.9	kJ/mol	46.0248 ± 0.0010	232262-10-1*0
Dioxymethyl cation		1075.1	1068.7	± 1.7	kJ/mol	46.0248 ± 0.0010	232262-11-2*0
1-(Dioxidan-2-id-1-yl)ethyl		27.9	16.3	± 4.4	kJ/mol	60.0525 ± 0.0017	1646268-48-5*1
1-(Dioxidan-2-id-1-yl)ethyl		28.3	16.6	± 4.4	kJ/mol	60.0525 ± 0.0017	1646268-48-5*2
Dioxymethylene		341.8	339.8	± 3.0	kJ/mol	45.0174 ± 0.0010	438586-67-5*2
OH-CO vdW complex		-80.50	-76.77	± 0.85	kJ/mol	45.0174 ± 0.0010	2564-85-4100
CO-HO vdW complex		-77.5	-73.3	± 1.3	kJ/mol	45.0174 ± 0.0010	2564-84-3100
Cyanato cation		1261.52	1262.02	± 0.58	kJ/mol	42.01629 ± 0.00086	17247-99-3*0
Nitrosomethyliumylidene		1509.8	1510.9	± 1.7	kJ/mol	42.01629 ± 0.00086	67197-19-7*0
Fulminate		59.5	59.8	± 1.7	kJ/mol	42.01739 ± 0.00086	28269-67-2*0
Ammonium hydroxide		-360.45	-361.53	± 0.57	kJ/mol	35.04584 ± 0.00047	1336-21-6*500
Bromine dioxide		165.6	156.0	± 2.1	kJ/mol	111.9028 ± 0.0012	21255-83-4*0
Fluoroniumyl ion		1275.556	1275.788	± 0.022	kJ/mol	20.005795 ± 0.000070	12381-92-9*0
Ammonium hydroxide			-362.833	± 0.061	kJ/mol	35.04584 ± 0.00047	1336-21-6*800
Glyoxal		-189.37	-194.82	± 0.70	kJ/mol	58.0361 ± 0.0017	107-22-2*2
Ethynediol		-18.3	-22.1	± 1.6	kJ/mol	58.0361 ± 0.0017	16005-17-7*0
Chlorite		-105.51	-107.68	± 0.37	kJ/mol	67.4520 ± 0.0011	14998-27-7*0
Dimethylaminylium		1040.9	1025.5	± 1.8	kJ/mol	44.0752 ± 0.0017	49784-85-2*0
Nitrous acid		-72.988	-78.645	± 0.077	kJ/mol	47.01348 ± 0.00061	7782-77-6*0
Ethylimidogen		306.1	291.5	± 2.0	kJ/mol	43.0678 ± 0.0016	27770-44-1*0
Trichloride		-328.5	-327.6	± 1.3	kJ/mol	106.3586 ± 0.0027	18434-33-8*0
Trifluoride ion		-348.6	-349.4	± 2.5	kJ/mol	56.9957582 ± 0.0000015	25730-99-8*0
Diisocyanogen		610.9	613.2	± 1.7	kJ/mol	52.0349 ± 0.0016	78800-21-2*0
Cyanoamidogen anion		391.7	389.5	± 1.8	kJ/mol	41.03267 ± 0.00082	67131-47-9*12
Chlorine difluoride anion		-504.9	-505.8	± 1.9	kJ/mol	73.45005 ± 0.00090	16892-05-0*0
Dioxofluorine		523.9	523.2	± 1.0	kJ/mol	50.99720 ± 0.00060	175861-93-5*0
Methyleneoxonium cation		827.8	818.3	± 1.7	kJ/mol	32.04131 ± 0.00090	177788-17-90
Diazirenide		454.9	452.2	± 1.5	kJ/mol	41.03267 ± 0.00082	130614-84-5*0
Cyanamide cation		1158.8	1152.4	± 1.5	kJ/mol	42.03951 ± 0.00082	148556-23-4*0
3-Diaziridinylidene		521.9	515.0	± 1.5	kJ/mol	42.04006 ± 0.00082	85513-79-7*1
Diazomethylene		577.9	578.6	± 2.2	kJ/mol	40.02418 ± 0.00081	2468-81-7*0
(Z)-Diazene cation	$[H]/N=[N+]\[H]$	1157.0	1150.2	± 1.3	kJ/mol	30.02881 ± 0.00020	86631-37-0*0
Dichloromethylene		313.99	315.20	± 0.90	kJ/mol	82.9161 ± 0.0020	1605-72-7*1
Chloromethyliumyl		1207.4	1207.7	± 2.0	kJ/mol	48.4708 ± 0.0012	89877-51-0*0
Chloromethylene anion		203.54	204.35	± 0.94	kJ/mol	48.4719 ± 0.0012	75466-08-9*0
Chlorohydroxymethyl		-46.0	-51.6	± 2.0	kJ/mol	65.4787 ± 0.0012	147139-06-8*2
1,1,1,2-Tetrachloroethane			-193.4	± 1.1	kJ/mol	167.8481 ± 0.0039	630-20-6*500
Hexachloroethane			-214.1	± 2.8	kJ/mol	236.7376 ± 0.0056	67-72-1*500
3-Chloro-3-methyl-3H-diazirine		251.5	239.6	± 2.7	kJ/mol	90.5114 ± 0.0019	4222-21-3*0
trans-1,2-Dichloroethene	$C(\Cl)=C/Cl$	5.66	0.24	± 0.56	kJ/mol	96.9427 ± 0.0024	156-60-5*0
Azidonitrene		660.8	657.7	± 1.6	kJ/mol	56.02696 ± 0.00028	147363-92-6*1
Bromomethylidyne		504.2	500.5	± 2.1	kJ/mol	91.9147 ± 0.0013	3889-77-8*0
Iodomethylidyne		554.8	556.7	± 2.1	kJ/mol	138.91517 ± 0.00080	3889-78-9*0
Sulfuryl dichloride		-348.06	-354.22	± 0.75	kJ/mol	134.9702 ± 0.0063	7791-25-5*0
Hydroxymethylene cation		986.4	982.8	± 1.6	kJ/mol	30.02543 ± 0.00087	135395-06-1*2
Hydroxymethylene cation		1482.1	1479.4	± 1.9	kJ/mol	30.02543 ± 0.00087	135395-06-1*3
Fluorochlorobromomethane		-218.3	-230.9	± 4.9	kJ/mol	147.3737 ± 0.0016	593-98-6*0
Fluoromethyliumyl		1116.6	1116.9	± 1.7	kJ/mol	32.01649 ± 0.00080	89877-52-1*0
Fluoromethylene anion		95.95	96.48	± 0.61	kJ/mol	32.01759 ± 0.00080	71267-42-0*0
Hydroxymethylene anion		160.2	157.5	± 1.7	kJ/mol	30.02653 ± 0.00087	207914-87-2*2
Polytetrafluoroethylene			-829.94	± 0.54	kJ/mol	100.0150 ± 0.0016	9002-84-0*591
Hydroxymethylene anion		334.0	334.8	± 2.1	kJ/mol	30.02653 ± 0.00087	207914-87-2*3
Nitric acid		-178.95	-173.23	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*500
trans-1,2-Difluoroethene		-299.72	-306.16	± 0.83	kJ/mol	64.0341 ± 0.0016	1630-78-0*0
Trioxidanylium		1085.5	1079.2	± 1.4	kJ/mol	49.00559 ± 0.00090	74241-49-9*2
Fluoroethynide		133.3	137.5	± 1.5	kJ/mol	43.0204 ± 0.0016	85905-56-2*0
Formyl fluoride cation		816.6	813.3	± 1.3	kJ/mol	48.01589 ± 0.00086	99766-68-4*0
Formyl fluoride		-405.1	-403.7	± 1.6	kJ/mol	47.00905 ± 0.00085	62227-71-8*0
Aquacarbon		467.6	465.5	± 1.9	kJ/mol	30.02598 ± 0.00087	81434-73-3*102
Fluoroisoformyl cation		1347.4	1349.5	± 1.9	kJ/mol	47.00795 ± 0.00085	1871-25-60
Trioxidanyl		26.35	23.08	± 0.19	kJ/mol	49.00614 ± 0.00090	12500-78-6*2
Aquacarbon cation		1196.1	1193.0	± 1.7	kJ/mol	30.02543 ± 0.00087	81434-73-30
Dihydrogen fluoride anion		-61.9	-60.5	± 3.2	kJ/mol	21.01483 ± 0.00014	117339-92-1*2
o-Benzyne cation		1392.2	1384.2	± 1.6	kJ/mol	76.0954 ± 0.0048	70220-84-7*0
m-Benzyne cation		1363.1	1354.6	± 1.5	kJ/mol	76.0954 ± 0.0048	121058-08-0*0
p-Benzyne		603.6	594.2	± 1.2	kJ/mol	76.0960 ± 0.0048	3355-34-8*1
1-Hydrazinylium-1-yl		1143.4	1136.4	± 1.4	kJ/mol	30.02881 ± 0.00020	63986-30-1*0
Hydrogen fluoride			-321.85	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*902
Dioxaziridinyl cation		1365.9	1363.3	± 1.7	kJ/mol	46.00499 ± 0.00060	66252-29-70
1,3-Cycloheptadiene		123.68	94.57	± 0.78	kJ/mol	94.1543 ± 0.0056	4054-38-0*1
Tropylium		899.22	879.45	± 0.99	kJ/mol	91.1299 ± 0.0056	26811-28-9*0
Dioxaziridinyl anion		295.9	293.4	± 1.6	kJ/mol	46.00609 ± 0.00060	66252-31-1*0
Ethane cation		1043.15	1029.14	± 0.59	kJ/mol	30.0685 ± 0.0017	34488-65-8*0
Peroxyimidogen cation		1409.6	1406.8	± 1.9	kJ/mol	46.00499 ± 0.00060	60488-32-60
Hexafluorobenzene		-997.16	-983.37	± 0.87	kJ/mol	186.0546 ± 0.0048	392-56-3*500
Chlorine difluoride		22.5	23.9	± 1.9	kJ/mol	73.44951 ± 0.00090	91483-78-2*0
Trioxidaniumyl		935.2	926.1	± 1.5	kJ/mol	50.01353 ± 0.00091	161321-37-5*3
Peroxyformic acid		-265.1	-273.0	± 1.4	kJ/mol	62.0248 ± 0.0012	107-32-4*3
Ethylene anion		232.1	224.4	± 2.0	kJ/mol	28.0537 ± 0.0016	34527-91-8*1
Peroxyimidogen anion		165.1	162.7	± 1.7	kJ/mol	46.00609 ± 0.00060	60488-31-5*0
Ethyl nitrite		-79.93	-97.33	± 0.86	kJ/mol	75.0666 ± 0.0017	109-95-5*0
Nirous oxide cation		1329.70	1326.80	± 0.12	kJ/mol	44.01233 ± 0.00033	12269-46-4*0
Glycine cation		520.3	501.8	± 2.8	kJ/mol	75.0661 ± 0.0017	35492-82-1*1
Tetrabromoethene		218.8	190.3	± 2.2	kJ/mol	343.6374 ± 0.0043	79-28-7*0
Oxadiazirine anion		95.1	95.5	± 2.9	kJ/mol	44.01343 ± 0.00033	350586-31-1*0
Tetraiodoethene		392.2	388.0	± 2.2	kJ/mol	531.6393 ± 0.0016	513-92-8*0
1,1-Dibromoethane		-4.8	-31.8	± 1.8	kJ/mol	187.8612 ± 0.0026	557-91-5*0
Peroxychlorite		-116.2	-114.9	± 2.3	kJ/mol	83.4514 ± 0.0013	852472-63-0*1
Fluorosyl fluoride anion		-147.1	-146.8	± 3.0	kJ/mol	53.99675 ± 0.00030	86825-57-22
Carbamoyl		74.1	67.7	± 2.7	kJ/mol	44.03272 ± 0.00087	2858-51-71
Formaldiminoxy		161.0	154.0	± 1.5	kJ/mol	44.03272 ± 0.00087	2683-96-7*0
Formaldoxime		50.7	39.8	± 1.8	kJ/mol	45.04066 ± 0.00088	75-17-2*2
Oxaziridine		115.6	103.8	± 2.1	kJ/mol	45.04066 ± 0.00088	6827-26-5*0
Cyanoethynyl		715.8	722.2	± 1.1	kJ/mol	50.0388 ± 0.0024	62435-43-2*0
2-Methylene-2H-azirine		404.3	397.0	± 1.7	kJ/mol	53.0627 ± 0.0024	110027-86-6*0
Trioxodinitrate anion		-104.3	-107.5	± 1.9	kJ/mol	76.01223 ± 0.00091	194856-62-7*100
2-Cyanovinylium		1517.5	1515.3	± 1.8	kJ/mol	52.0542 ± 0.0024	85398-67-0*22
2-Cyanovinyl anion		266.2	263.3	± 1.8	kJ/mol	52.0553 ± 0.0024	85398-67-01
2-Isocyanovinyl		544.6	542.7	± 1.7	kJ/mol	52.0547 ± 0.0024	225798-14-1*2
Cyanomethylene		529.4	530.4	± 1.3	kJ/mol	39.0361 ± 0.0016	2612-62-6*2
Isocyanomethylene		585.2	586.3	± 1.6	kJ/mol	39.0361 ± 0.0016	78694-65-2*2
3-Methylcycloprop-3-en-2-ylium-1-yl		1284.0	1277.5	± 1.5	kJ/mol	52.0740 ± 0.0032	185841-59-20
Vinylvinylidene cation		1429.9	1424.2	± 2.0	kJ/mol	52.0740 ± 0.0032	161054-20-2*1
1,2-Butadien-1-ylidene		511.8	506.3	± 2.0	kJ/mol	52.0746 ± 0.0032	119908-55-3*2
1-Buten-3-ynylium		1482.5	1480.0	± 1.4	kJ/mol	51.0661 ± 0.0032	84654-85-3*1
3-Buten-1-ynylium		1572.7	1570.3	± 1.7	kJ/mol	51.0661 ± 0.0032	103928-84-3*1
3-Methylene-1-cyclopropen-1-ylium		1398.8	1395.5	± 1.7	kJ/mol	51.0661 ± 0.0032	117469-28-0*2
Nitrosyl nitrate		70.6	62.3	± 1.8	kJ/mol	92.0111 ± 0.0012	15969-55-80
Butyraldehyde		-185.26	-205.63	± 0.85	kJ/mol	72.1057 ± 0.0033	123-72-8*0
Chloroallene		181.9	175.2	± 1.6	kJ/mol	74.5086 ± 0.0026	3223-70-9*0
1-Chloropropyne		192.1	188.0	± 1.6	kJ/mol	74.5086 ± 0.0026	7747-84-4*0
Methylcyclopentane		-68.58	-106.11	± 0.36	kJ/mol	84.1595 ± 0.0049	96-37-7*0
Dioxosilane		-906.77	-911.75	± 0.63	kJ/mol	60.08430 ± 0.00067	7631-86-9*500
Dioxosilane		-826.32	-902.25	± 0.64	kJ/mol	60.08430 ± 0.00067	7631-86-9*520
Silicon carbide cation		1604.8	1609.4	± 2.4	kJ/mol	40.09565 ± 0.00085	78393-58-5*0
Tetrafluorosilane cation		-138.1	-142.4	± 9.4	kJ/mol	104.07856 ± 0.00030	62859-94-3*0
Acetylene anion		356.9	356.7	± 1.9	kJ/mol	26.0378 ± 0.0016	50443-89-5*1
Difluorosilyliumyl		416.0	415.3	± 2.0	kJ/mol	66.08176 ± 0.00030	37300-76-8*0
Silyliumyl		1155.47	1153.85	± 0.93	kJ/mol	30.10083 ± 0.00033	28149-31-7*0
Fluorodioxidenium		1221.9	1219.5	± 2.0	kJ/mol	50.99665 ± 0.00060	139584-95-5*0
Disilanyl anion		63.3	50.9	± 2.1	kJ/mol	61.21125 ± 0.00069	53199-49-8*0
Disilene		393.4	384.9	± 2.2	kJ/mol	60.20276 ± 0.00066	15435-77-5*1
Di-mu-hydrodihydrodisilicon		385.7	375.3	± 2.6	kJ/mol	60.20276 ± 0.00066	129970-82-7*22
Fluorine atom cation		1758.301	1760.600	± 0.017	kJ/mol	18.99785462 ± 0.00000050	14701-13-4*0
Iodosilane		6.9	-2.8	± 2.6	kJ/mol	158.01379 ± 0.00037	13598-42-0*0
Trimethylsilanide		-42.0	-65.4	± 2.1	kJ/mol	73.1896 ± 0.0025	54711-92-1*0
Fluorodioxidanide		-256.8	-256.1	± 1.9	kJ/mol	50.99775 ± 0.00060	23553-17-5*0
1-Chloro ozone anion		-109.0	-111.5	± 2.1	kJ/mol	83.4514 ± 0.0013	224299-15-4*3
(3E)-1,3-Hexadien-5-yne		358.9	346.6	± 1.9	kJ/mol	78.1118 ± 0.0048	5222-77-5*0
Divinylacetylene		361.9	350.5	± 1.9	kJ/mol	78.1118 ± 0.0048	821-08-9*2
1,2,4-Cyclohexatriene		419.5	403.7	± 2.0	kJ/mol	78.1118 ± 0.0048	124869-33-6*0
1-Chloro ozone anion		-66.9	-68.8	± 2.1	kJ/mol	83.4514 ± 0.0013	224299-15-4*1
Ethylammoniumyl		827.6	807.6	± 1.6	kJ/mol	45.0832 ± 0.0017	41857-50-5*0
2-Methyl-2-propanamine		-87.00	-120.65	± 0.55	kJ/mol	73.1369 ± 0.0033	75-64-9*0
Deuterium atom cation		1532.210	1534.123	± 0.000	kJ/mol	2.01355319809 ± 0.00000000040	14464-47-2*0
Benzophenone		80.7	51.5	± 1.5	kJ/mol	182.2179 ± 0.0104	119-61-9*0
Nitrosyl fluoride		-85.48	-87.85	± 0.76	kJ/mol	49.00454 ± 0.00031	7789-25-5*0
Helium		1912.302	1912.302	± 0.000	kJ/mol	4.0026020 ± 0.0000020	7440-59-7*1
Helium cation		2372.322	2372.322	± 0.000	kJ/mol	4.0020534 ± 0.0000020	14234-48-1*0
Neonium		1324.85	1323.04	± 0.87	kJ/mol	21.18709 ± 0.00060	12200-65-6*0
Kryptonium		1106.29	1104.50	± 0.68	kJ/mol	84.8074 ± 0.1000	37276-90-7*0
Monosulfur cation		1276.42	1278.21	± 0.14	kJ/mol	32.0655 ± 0.0060	14701-12-3*0
Iodine		198.109	197.709	± 0.0021	kJ/mol	126.904470 ± 0.000030	14362-44-8*2
Oxosulfur		999.26	999.87	± 0.13	kJ/mol	48.0649 ± 0.0060	767269-11-4*0
Bifluoride		-705.22	-709.07	± 0.35	kJ/mol	39.005295 ± 0.000070	18130-74-0*0
Hydrogen oxide sulfide		51.1	45.1	± 1.4	kJ/mol	50.0813 ± 0.0060	155348-09-7*0
Sulfuric acid			-887.18	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*825
Sulfuric acid			-899.22	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*846
Hydrogen sulfite		-684.8	-692.1	± 1.8	kJ/mol	81.0727 ± 0.0061	15181-46-1*0
Dioxoperoxysulfane		-176.7	-177.7	± 2.1	kJ/mol	96.0636 ± 0.0061	103613-08-711
Dioxoperoxysulfane		-296.1	-296.1	± 2.0	kJ/mol	96.0636 ± 0.0061	103613-08-721
Dioxoperoxysulfate dianion		-209.1	-214.8	± 2.1	kJ/mol	96.0647 ± 0.0061	14808-79-81
Ethanethiol		-71.48	-73.08	± 0.37	kJ/mol	62.1350 ± 0.0062	75-08-1*500
Dimethylsulfoxide		-201.92	-203.58	± 0.49	kJ/mol	78.1344 ± 0.0062	67-68-5*500
Carbon monosulfide		278.91	282.16	± 0.68	kJ/mol	44.0767 ± 0.0061	2944-05-0*0
Platinum		563.4	564.3	± 1.7	kJ/mol	195.0780 ± 0.0020	7440-06-4*0
Perchloryloxy		248.4	240.8	± 1.8	kJ/mol	99.4503 ± 0.0015	12133-63-0*0
1-Hydroxyethanide		-20.3	-33.7	± 2.2	kJ/mol	45.0610 ± 0.0017	88032-18-2*0
(Methylmethylene)oxonium		686.0	671.7	± 2.2	kJ/mol	45.0600 ± 0.0017	23653-97-6*0
Methoxymethyl anion		23.4	10.4	± 2.3	kJ/mol	45.0610 ± 0.0017	61192-30-1*0
Triiodine cation		946.1	941.0	± 4.1	kJ/mol	380.712861 ± 0.000090	12596-32-6*0
Acetaldehyde anion		-62.1	-72.4	± 2.2	kJ/mol	44.0531 ± 0.0017	60427-04-5*0
Dichlorine			-16.473	± 0.090	kJ/mol	70.9054 ± 0.0018	7782-50-5*1000
Ketene cation		882.24	879.07	± 0.11	kJ/mol	42.0361 ± 0.0016	64999-16-2*0
Ketene anion		-16.0	-19.1	± 2.2	kJ/mol	42.0372 ± 0.0016	56391-79-8*0
Hydrogen chloride			-165.945	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*907
Oxoethenylium		1139.7	1142.5	± 2.1	kJ/mol	41.0282 ± 0.0016	92056-63-8*0
Isocyanomethylium		1272.6	1270.4	± 2.2	kJ/mol	40.0435 ± 0.0016	78269-43-9*0
Aminooxy anion		47.3	40.4	± 1.7	kJ/mol	32.02257 ± 0.00034	51375-41-8*0
Dibromine			-2.25	± 0.18	kJ/mol	159.8080 ± 0.0020	7726-95-6*800
Ammonium chloride		-311.555	-314.717	± 0.062	kJ/mol	53.49120 ± 0.00095	12125-02-9*510
Ammonium bromide		-253.26	-269.84	± 0.14	kJ/mol	97.9425 ± 0.0010	12124-97-9*510
Oxiranylidene		456.1	452.1	± 2.2	kJ/mol	42.0367 ± 0.0016	50983-85-2*1
Oxiranylidene cation		1165.4	1161.9	± 2.5	kJ/mol	42.0361 ± 0.0016	50983-85-20
Oxiranylidene anion		236.4	232.4	± 2.3	kJ/mol	42.0372 ± 0.0016	50983-86-30
Methyl hydroperoxide cation		833.8	819.7	± 2.0	kJ/mol	48.0407 ± 0.0010	112465-88-0*0
Nitrosyl nitrate		48.3	40.3	± 1.8	kJ/mol	92.0111 ± 0.0012	15969-55-8*1
Dihydroxymethylium		421.5	410.2	± 3.0	kJ/mol	47.0328 ± 0.0010	180071-68-5*1
Hydroxymethoxy cation		925.0	914.7	± 3.2	kJ/mol	47.0328 ± 0.0010	180071-69-6*13
1-Propenylidene		630.5	623.0	± 1.7	kJ/mol	40.0639 ± 0.0024	70277-78-0*2
Oxybismethanol		-534.2	-557.2	± 1.9	kJ/mol	78.0672 ± 0.0019	4407-89-0*11
Methoxyoxoniumylidene		1012.33	1003.50	± 0.67	kJ/mol	47.0328 ± 0.0010	86475-50-5*0
Ethylperoxy		-5.31	-21.41	± 0.86	kJ/mol	61.0599 ± 0.0017	3170-61-4*1
Formic acid		-431.46	-424.63	± 0.20	kJ/mol	46.0254 ± 0.0010	64-18-6*500
Dioxirane anion		-173.0	-179.8	± 3.4	kJ/mol	46.0259 ± 0.0010	157-26-60
Dioxymethyl anion		55.1	49.9	± 1.4	kJ/mol	46.0259 ± 0.0010	93207-29-5*0
Hypofluorous acid cation		1142.01	1139.00	± 0.87	kJ/mol	36.00519 ± 0.00031	90243-22-4*0
H-CO2 vdW complex		-178.3	-177.5	± 2.1	kJ/mol	45.0174 ± 0.0010	2564-83-2100
1,2-Propadien-1-yl-3-ylidene anion		621.7	629.1	± 1.3	kJ/mol	36.0326 ± 0.0024	109292-47-9*0
Bromine atom		117.925	111.863	± 0.055	kJ/mol	79.90400 ± 0.00100	10097-32-2*1
2-Propanol		-305.33	-318.14	± 0.26	kJ/mol	60.0950 ± 0.0025	67-63-0*500
1-Propanol		-290.26	-302.44	± 0.19	kJ/mol	60.0950 ± 0.0025	71-23-8*500
Hydrooxonitrate		78.60	75.68	± 0.99	kJ/mol	31.01463 ± 0.00032	66057-02-1*0
Imidogen anion		322.63	322.68	± 0.16	kJ/mol	15.015229 ± 0.000099	23841-33-0*0
Oxazirinyl cation		1565.5	1566.2	± 2.3	kJ/mol	42.01629 ± 0.00086	228850-18-80
Oxazirinyl anion		448.2	449.0	± 2.4	kJ/mol	42.01739 ± 0.00086	28269-68-3*0
Acetic acid		-484.02	-483.59	± 0.18	kJ/mol	60.0520 ± 0.0017	64-19-7*500
Acetic acid			-484.60	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*825
Acetic acid			-484.80	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*840
Nitrate			-206.52	± 0.18	kJ/mol	62.00549 ± 0.00090	14797-55-8*800
Cyanogen bromide anion		57.9	54.3	± 3.8	kJ/mol	105.9220 ± 0.0013	54092-05-6*0
Ethyl formate			-425.8	± 1.1	kJ/mol	74.0785 ± 0.0025	109-94-4*500
Hydrogen fluoride			-321.92	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*821
Hydroxyimidogen anion		229.8	227.4	± 2.2	kJ/mol	31.01463 ± 0.00032	35337-59-80
Methylimidogen anion		321.1	313.4	± 1.3	kJ/mol	29.04181 ± 0.00083	82539-34-2*0
Hypofluorous acid anion		155.3	154.7	± 2.6	kJ/mol	36.00629 ± 0.00031	36505-07-4*2
2-Cyclopropyn-1-ylidene		993.1	1000.0	± 2.6	kJ/mol	36.0321 ± 0.0024	102508-15-6*2
Propionic acid		-415.4	-433.0	± 1.3	kJ/mol	74.0785 ± 0.0025	79-09-4*2
2-Cyclopropyn-1-yl anion		664.5	671.8	± 1.6	kJ/mol	36.0326 ± 0.0024	500574-36-7*0
2-Propenylidyne anion		464.6	460.9	± 1.7	kJ/mol	39.0565 ± 0.0024	120126-89-8*0
Imidogen		358.75	358.80	± 0.16	kJ/mol	15.014680 ± 0.000099	13774-92-0*1
2-Propen-3-yliumylidene		1494.5	1491.6	± 1.7	kJ/mol	39.0554 ± 0.0024	84654-86-4*0
(1Z)-Ethanimine		58.9	44.2	± 1.4	kJ/mol	43.0678 ± 0.0016	56003-82-8*0
(E)-2-Iminoethylium		1108.4	1097.7	± 2.9	kJ/mol	42.0594 ± 0.0016	91127-33-2*22
2-Iminoethyl anion		104.5	93.6	± 2.1	kJ/mol	42.0604 ± 0.0016	73843-87-5*1
2-Propenylidene anion		536.0	532.6	± 1.7	kJ/mol	39.0565 ± 0.0024	98705-30-7*0
Hydroxyoxoammoniumyl		984.1	977.7	± 1.8	kJ/mol	47.01293 ± 0.00061	80371-48-8*0
Cyanogen cation		1598.25	1600.47	± 0.42	kJ/mol	52.0343 ± 0.0016	37354-81-7*0
Isocyanogen		412.1	414.4	± 1.3	kJ/mol	52.0349 ± 0.0016	83951-85-3*0
Diazoethenylidene		658.6	661.2	± 1.8	kJ/mol	52.0349 ± 0.0016	130760-10-0*0
Methanol anion		-89.0	-99.7	± 2.8	kJ/mol	32.04241 ± 0.00090	68474-04-4*0
Isocyanomethyliumylidene		1615.7	1621.2	± 1.9	kJ/mol	38.0276 ± 0.0016	78271-45-1*0
Isocyanomethylidyne anion		479.2	482.9	± 2.0	kJ/mol	38.0287 ± 0.0016	53590-27-50
Cyanomethyliumylidene		1719.8	1725.3	± 2.1	kJ/mol	38.0276 ± 0.0016	76619-90-4*0
Cyanomethylidyne anion		410.0	413.7	± 2.2	kJ/mol	38.0287 ± 0.0016	12373-35-2*0
2,3-didehydro-1H-azirin-1-yl		720.3	724.4	± 2.1	kJ/mol	38.0281 ± 0.0016	439586-06-8*0
Fluoronium		774.04	771.10	± 0.91	kJ/mol	21.01373 ± 0.00014	12206-67-6*0
Methyleneaminylium		1456.7	1453.1	± 2.1	kJ/mol	28.03277 ± 0.00082	53518-13-1*1
Hydrogen chloride			-165.545	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*953
Diazirinyl		557.1	553.9	± 2.0	kJ/mol	41.03212 ± 0.00082	69967-71-1*2
Carbon tetracation		14993.609	14998.755	± 0.050	kJ/mol	12.00851 ± 0.00080	16092-62-9*0
Water			-285.802	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*589
Iminomethylimidogen anion		401.9	398.6	± 2.3	kJ/mol	41.03267 ± 0.00082	150296-30-3*2
1H-Diazirin-3-ylium		1527.2	1523.7	± 2.0	kJ/mol	41.03157 ± 0.00082	735234-64-7*2
1H-Diazirin-3-yl		917.7	914.3	± 1.9	kJ/mol	41.03212 ± 0.00082	324529-57-9*2
1H-diazirin-3-ide		379.8	376.7	± 2.0	kJ/mol	41.03267 ± 0.00082	735234-64-72
1,3-Propanediyl		337.7	323.0	± 2.2	kJ/mol	42.0797 ± 0.0024	32458-33-6*21
Methanediimine cation		1137.8	1133.1	± 2.2	kJ/mol	42.03951 ± 0.00082	1189338-16-6*2
Diazomethane cation		1141.94	1135.66	± 0.87	kJ/mol	42.03951 ± 0.00082	58852-13-4*0
3H-Diazirine cation		1327.6	1322.0	± 1.7	kJ/mol	42.03951 ± 0.00082	796039-16-2*0
Hydroperoxyimidogen		103.3	99.8	± 2.4	kJ/mol	47.01348 ± 0.00061	877456-58-1*1
1H-Diazirene cation		1333.4	1326.3	± 1.9	kJ/mol	42.03951 ± 0.00082	157-23-30
Isocyanamide cation		1321.4	1316.1	± 1.9	kJ/mol	42.03951 ± 0.00082	160951-17-7*0
3-Diaziridinylidene cation		1479.7	1473.7	± 2.4	kJ/mol	42.03951 ± 0.00082	85513-79-71
Hydrogen chloride			-166.563	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*839
Trichloromethylium		856.15	854.63	± 0.93	kJ/mol	118.3683 ± 0.0028	27130-34-3*0
Aminomethyliumylidene		1168.3	1165.1	± 2.2	kJ/mol	28.03277 ± 0.00082	86784-42-1*0
Dichloromethyliumyl		1122.0	1122.9	± 1.8	kJ/mol	82.9156 ± 0.0020	55945-51-2*0
Fluoroaminyliumyl		1415.09	1415.63	± 0.85	kJ/mol	33.004595 ± 0.000070	33146-36-0*0
Formaldehyde anion		-26.7	-28.3	± 2.0	kJ/mol	30.02653 ± 0.00087	27837-46-3*0
Triazirinylium ion		1609.0	1606.1	± 1.6	kJ/mol	42.01967 ± 0.00021	92220-05-8*0
Formaldehyde		196.011	192.708	± 0.094	kJ/mol	30.02598 ± 0.00087	50-00-0*1
Propynylidene		543.73	546.73	± 0.58	kJ/mol	38.0480 ± 0.0024	67152-18-5*0
Hydrogen chloride			-166.604	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*954
Triazirine		464.2	457.7	± 2.6	kJ/mol	43.02816 ± 0.00022	157-29-9*0
1,1,1-Trichloroethane		-183.82	-177.17	± 0.53	kJ/mol	133.4033 ± 0.0031	71-55-6*500
3-Methanetetrayl-1,2-cyclopropanediylidene		1154.7	1164.2	± 1.9	kJ/mol	48.0428 ± 0.0032	78015-08-4*0
Nitric acid cation		1029.21	1020.14	± 0.69	kJ/mol	63.01233 ± 0.00091	272109-63-4*0
Vinyl chloride		-3.59	0.98	± 0.91	kJ/mol	62.4979 ± 0.0018	75-01-4*500
1-Cyclopropene-1,2-diyl		791.2	790.7	± 1.5	kJ/mol	38.0480 ± 0.0024	202744-75-0*0
Chloromethane cation		1014.63	1007.86	± 0.17	kJ/mol	50.4867 ± 0.0012	12538-71-5*0
Fluorosyl fluoride cation		1413.1	1413.4	± 3.5	kJ/mol	53.99566 ± 0.00030	86825-50-51
Dinitrogen pentoxide			-41.16	± 0.38	kJ/mol	108.0105 ± 0.0015	10102-03-1*500
2-Cyclopropyn-1-ylidenemethyl anion		800.8	809.8	± 1.7	kJ/mol	48.0433 ± 0.0032	289679-90-9*0
Hydrogen chloride			-166.635	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*840
Bromofluoromethane		-197.4	-211.9	± 4.9	kJ/mol	112.9290 ± 0.0013	373-52-4*0
Fluorodibromomethane		-159.7	-179.3	± 4.9	kJ/mol	191.8250 ± 0.0022	1868-53-7*0
Difluorochlorobromomethane		-428.9	-439.9	± 4.9	kJ/mol	165.3642 ± 0.0016	353-59-3*0
Dichlorofluorobromomethane		-228.3	-238.3	± 4.9	kJ/mol	181.8185 ± 0.0022	353-58-2*0
Dibromofluorochloromethane		-169.9	-186.8	± 4.9	kJ/mol	226.2698 ± 0.0023	353-55-9*0
Krypton cation		1350.756	1350.756	± 0.000	kJ/mol	83.7995 ± 0.1000	16915-28-9*0
Hydrogen bromide			-120.01	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*834
Cyclopropenyliumdiyl		1692.3	1695.3	± 1.8	kJ/mol	37.0395 ± 0.0024	127476-05-5*0
Cyclopropynyl anion		518.40	521.38	± 0.76	kJ/mol	37.0406 ± 0.0024	136861-42-2*0
Trioxidanylium		1070.7	1064.5	± 1.4	kJ/mol	49.00559 ± 0.00090	74241-49-9*0
Chlorine difluoride cation		1346.3	1344.9	± 2.1	kJ/mol	73.44896 ± 0.00090	86825-59-4*0
Tetranitrogen cation		1392.8	1392.5	± 1.5	kJ/mol	56.02641 ± 0.00028	12185-04-5*0
1,2-Difluoroacetylene cation		1081.7	1084.4	± 1.3	kJ/mol	62.0177 ± 0.0016	268566-70-7*0
Difluorophosgene cation		653.45	650.69	± 0.51	kJ/mol	66.00636 ± 0.00085	73256-56-1*0
Nitric acid			-186.79	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*801
Chlorine difluoride anion		-319.0	-319.0	± 2.2	kJ/mol	73.45005 ± 0.00090	91419-41-9*0
Chloro(chlorooxy)methylene		73.5	73.7	± 3.6	kJ/mol	98.9155 ± 0.0020	479587-31-0*2
Chlorohydroxymethylene		14.0	11.1	± 2.5	kJ/mol	64.4707 ± 0.0012	147723-60-2*1
(Chlorooxy)methylene		119.3	117.9	± 2.7	kJ/mol	64.4707 ± 0.0012	331419-80-8*2
Dibromophosgene			-143.98	± 0.95	kJ/mol	187.8181 ± 0.0022	593-95-3*590
2-Chloroethanol			-314.89	± 0.53	kJ/mol	80.5132 ± 0.0019	107-07-3*590
2-Bromoethanol			-274.36	± 0.46	kJ/mol	124.9645 ± 0.0019	540-51-2*590
Nitric acid			-197.73	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*805
Phenylium		1149.32	1136.54	± 0.85	kJ/mol	77.1034 ± 0.0048	17333-73-2*2
m-Benzyne anion		444.6	435.7	± 1.3	kJ/mol	76.0965 ± 0.0048	249589-31-9*0
p-Benzyne anion		465.2	455.6	± 1.3	kJ/mol	76.0965 ± 0.0048	219298-17-6*0
Chlorosyl chloride cation		1132.6	1130.8	± 2.0	kJ/mol	86.9043 ± 0.0018	86825-56-10
Cycloheptane		-126.54	-156.43	± 0.50	kJ/mol	98.1861 ± 0.0057	291-64-5*500
Ethylbenzene			-12.30	± 0.52	kJ/mol	106.1650 ± 0.0064	100-41-4*500
Phenylacetylene			273.87	± 0.70	kJ/mol	102.1332 ± 0.0064	536-74-3*500
Indane		25.43	10.95	± 0.76	kJ/mol	118.1757 ± 0.0072	496-11-7*500
Chlorosyl chloride anion		-185.4	-184.7	± 2.3	kJ/mol	86.9053 ± 0.0018	86825-55-00
Indene cation		969.97	946.73	± 0.73	kJ/mol	116.1593 ± 0.0072	42949-13-3*0
Indene		117.25	109.96	± 0.85	kJ/mol	116.1598 ± 0.0072	95-13-6*500
Phenyloxoniumylidene		898.7	884.4	± 1.4	kJ/mol	93.1028 ± 0.0048	41071-17-4*0
Hydrogen bromide			-120.14	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*954
Fluorobenzene		-148.76	-146.34	± 0.39	kJ/mol	96.1023 ± 0.0048	462-06-6*500
Chloryl chloride		126.1	122.1	± 1.7	kJ/mol	102.9042 ± 0.0019	117489-73-3*0
Ethanium		888.8	870.3	± 1.8	kJ/mol	31.0764 ± 0.0017	24669-33-8*2
Ethanium		895.2	877.3	± 1.9	kJ/mol	31.0764 ± 0.0017	24669-33-8*3
Bromobenzene			60.3	± 1.3	kJ/mol	157.0079 ± 0.0049	108-86-1*500
Hypochlorous acid cation		998.94	995.90	± 0.90	kJ/mol	52.45949 ± 0.00095	71606-47-8*0
2-Butynylium		1258.8	1251.5	± 1.6	kJ/mol	53.0820 ± 0.0032	64235-83-2*1
Pyridinium		761.7	740.8	± 1.3	kJ/mol	80.1073 ± 0.0040	16969-45-2*0
Acetone		-244.53	-247.64	± 0.26	kJ/mol	58.0791 ± 0.0025	67-64-1*500
2-Hydroxy-2-propenyl		4.0	-9.5	± 1.2	kJ/mol	57.0712 ± 0.0024	742072-56-6*0
Ethylene anion		231.6	225.5	± 2.0	kJ/mol	28.0537 ± 0.0016	34527-91-8*2
Propionaldehyde		-217.90	-216.44	± 0.24	kJ/mol	58.0791 ± 0.0025	123-38-6*500
Hydrogen fluoride			-321.97	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*823
Nirous oxide anion		99.3	96.7	± 1.9	kJ/mol	44.01343 ± 0.00033	12274-12-3*0
Ozone cation		1352.880	1350.541	± 0.041	kJ/mol	47.99765 ± 0.00090	12596-82-6*0
Difluoronitrate		-70.7	-72.6	± 1.9	kJ/mol	52.004095 ± 0.000070	37366-64-6*0
1-Ethylium-1-yl		1182.0	1174.7	± 3.2	kJ/mol	28.0526 ± 0.0016	85944-79-2*0
1-Methylene-2-propenylium		1059.5	1049.4	± 1.7	kJ/mol	53.0820 ± 0.0032	62698-26-4*2
1-Methylene-2-propenylium		1256.4	1246.7	± 1.7	kJ/mol	53.0820 ± 0.0032	62698-26-4*1
trans-1,2-Diiodoethene	$C(\I)=C/I$	215.19	207.80	± 0.35	kJ/mol	279.8462 ± 0.0016	590-27-2*0
Ethylidene anion		325.7	318.4	± 1.8	kJ/mol	28.0537 ± 0.0016	35829-99-3*0
Monoammonium succinate			-1067.85	± 0.72	kJ/mol	135.1186 ± 0.0035	38457-08-8*510
Diammonium succinate			-1182.36	± 0.47	kJ/mol	152.1492 ± 0.0035	2226-88-2*510
Acrolein		-46.3	-56.7	± 1.3	kJ/mol	56.0633 ± 0.0024	107-02-8*2
2H-Oxete		65.8	53.3	± 1.2	kJ/mol	56.0633 ± 0.0024	287-25-2*0
Hydrogen bromide			-120.30	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*844
1-Formylethenylium		1023.5	1018.0	± 2.3	kJ/mol	55.0548 ± 0.0024	101705-89-9*2
3-Oxo-1-propenylium		1005.1	1002.8	± 2.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*2
Ethenedione cation		909.5	912.6	± 2.0	kJ/mol	56.0197 ± 0.0017	12541-99-0*0
Hypochlorous acid anion		198.7	198.4	± 2.5	kJ/mol	52.46059 ± 0.00095	34524-94-2*0
Hydrogen difluoride cation		1174.3	1171.3	± 1.5	kJ/mol	39.004198 ± 0.000070	126950-54-72
1,3-Butadienylium		1133.7	1123.7	± 2.5	kJ/mol	53.0820 ± 0.0032	86181-69-3*2
Fluorosyl fluoride anion		-56.6	-55.7	± 2.4	kJ/mol	53.99675 ± 0.00030	86825-57-21
3-Imino-2-propen-1-ylidene		533.0	527.9	± 1.8	kJ/mol	53.0627 ± 0.0024	916765-05-4*12
3-Imino-2-propen-1-ylidene		572.6	567.3	± 2.0	kJ/mol	53.0627 ± 0.0024	916765-05-4*22
2-(Methylidyneamino)ethenyl		604.5	599.7	± 1.9	kJ/mol	53.0627 ± 0.0024	123416-74-0*12
2-(Methylidyneamino)ethenyl		637.1	632.3	± 2.0	kJ/mol	53.0627 ± 0.0024	123416-74-0*22
1-Cyanovinylium		1318.3	1317.1	± 2.2	kJ/mol	52.0542 ± 0.0024	85399-09-3*0
Hydrogen carbonate			-689.864	± 0.039	kJ/mol	61.0174 ± 0.0012	71-52-3*800
Ammonium radical		190.01	179.42	± 0.43	kJ/mol	18.03850 ± 0.00029	92075-50-8*0
Tetraoxygen		145.8	142.2	± 3.8	kJ/mol	63.9976 ± 0.0012	12596-83-7*22
Butatriene cation		1210.6	1204.8	± 1.3	kJ/mol	52.0740 ± 0.0032	65513-85-1*0
Bicyclo[1.1.0]but-3-ene		483.2	474.2	± 1.6	kJ/mol	52.0746 ± 0.0032	78525-41-4*0
Vinylvinylidene anion		405.8	399.0	± 2.0	kJ/mol	52.0751 ± 0.0032	167386-49-4*1
Hydrogen fluoride			-321.82	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*901
Tetrahedrane cation		1326.8	1318.6	± 1.7	kJ/mol	52.0740 ± 0.0032	80826-01-3*0
Bicyclo[1.1.0]but-1(3)-ene		578.8	570.4	± 1.9	kJ/mol	52.0746 ± 0.0032	58208-49-4*0
Bicyclo[1.1.0]but-1(3)-ene cation		1461.7	1453.6	± 2.1	kJ/mol	52.0740 ± 0.0032	58208-49-40
1-Buten-3-yn-1-yl		547.9	545.2	± 1.2	kJ/mol	51.0666 ± 0.0032	2810-61-9*2
3-Buten-1-ynylium		1603.9	1603.0	± 1.7	kJ/mol	51.0661 ± 0.0032	103928-84-3*2
3-Methylene-1-cyclopropen-1-ylium		1467.7	1464.1	± 1.6	kJ/mol	51.0661 ± 0.0032	117469-28-0*1
2-Cyclopropen-1-ylidenemethylium		1346.5	1343.9	± 1.8	kJ/mol	51.0661 ± 0.0032	112936-36-4*2
1,3-Cyclobutadien-1-ylium		1388.4	1383.4	± 1.8	kJ/mol	51.0661 ± 0.0032	81913-77-1*2
Cyanic azide		502.8	498.3	± 1.9	kJ/mol	68.03766 ± 0.00085	764-05-6*0
Phenyl hydroperoxide		13.8	-5.2	± 2.1	kJ/mol	110.1106 ± 0.0049	36112-26-2*0
trans-1,3,5-Hexatriene		184.1	164.2	± 2.4	kJ/mol	80.1277 ± 0.0048	821-07-8*0
Methylcyclopentadienyl		239.0	221.4	± 2.1	kJ/mol	79.1198 ± 0.0048	72348-44-8*0
Methylcyclopentane		-116.53	-137.89	± 0.35	kJ/mol	84.1595 ± 0.0049	96-37-7*500
Dioxosilane		-904.07	-908.93	± 0.68	kJ/mol	60.08430 ± 0.00067	7631-86-9*510
Cyclopentene			7.40	± 0.48	kJ/mol	68.1170 ± 0.0040	142-29-0*590
Fluorosilylidyne		-60.32	-58.48	± 0.62	kJ/mol	47.08390 ± 0.00030	11128-24-8*0
Deuterium hydride cation		1490.498	1490.587	± 0.000	kJ/mol	3.021493 ± 0.000070	12181-16-7*0
Hydrogen fluoride			-321.318	± 0.099	kJ/mol	20.006343 ± 0.000070	7664-39-3*809
Acetylene anion		380.1	380.4	± 1.9	kJ/mol	26.0378 ± 0.0016	50443-89-5*2
Silylene anion		167.2	165.6	± 1.4	kJ/mol	30.10193 ± 0.00033	54991-62-7*0
Silyliumylidene		1136.49	1137.70	± 0.80	kJ/mol	29.09289 ± 0.00031	31241-66-4*0
Chloroniumyl ion		1137.798	1137.732	± 0.0051	kJ/mol	36.46009 ± 0.00090	12258-94-5*0
Disilene cation		1069.5	1060.4	± 2.0	kJ/mol	60.20221 ± 0.00066	108492-63-3*0
Di-mu-hydrodihydrodisilicon cation		1180.3	1172.7	± 3.2	kJ/mol	60.20221 ± 0.00066	129970-82-71
Di-mu-hydrodihydrodisilicon anion		288.5	280.0	± 3.3	kJ/mol	60.20331 ± 0.00066	129970-83-81
mu-Hydrotrihydrodisilicon		459.2	450.9	± 2.5	kJ/mol	60.20276 ± 0.00066	497967-55-2*1
Acetylene		599.3	599.1	± 1.4	kJ/mol	26.0373 ± 0.0016	74-86-2*11
Vinylsilane		107.9	92.5	± 2.2	kJ/mol	58.1545 ± 0.0017	7291-09-0*0
Carbon		711.393	716.878	± 0.040	kJ/mol	12.01070 ± 0.00080	7440-44-0*1
Tribromine		156.0	134.3	± 3.2	kJ/mol	239.7120 ± 0.0030	11094-39-6*0
Diazenium		968.67	957.41	± 0.73	kJ/mol	31.03675 ± 0.00025	37369-93-0*0
Peroxychloric acid		76.6	68.4	± 2.5	kJ/mol	100.4582 ± 0.0015	177778-91-5*0
Tribromide		-287.4	-308.5	± 1.9	kJ/mol	239.7125 ± 0.0030	14522-80-6*0
Dewar benzene		422.2	405.1	± 1.7	kJ/mol	78.1118 ± 0.0048	5649-95-6*0
Methylammoniumyl		865.99	852.05	± 0.25	kJ/mol	31.05659 ± 0.00088	34516-31-9*0
1,2-Hexadien-4-yne		407.5	397.5	± 1.7	kJ/mol	78.1118 ± 0.0048	34783-10-3*0
3-Methylene-1-penten-4-yne		362.7	350.1	± 2.2	kJ/mol	78.1118 ± 0.0048	6929-96-0*1
3-Methyl-1,4-pentadiyne		439.1	427.7	± 1.6	kJ/mol	78.1118 ± 0.0048	57242-04-3*0
Dioxodiazoxane		109.3	105.3	± 1.8	kJ/mol	76.01168 ± 0.00091	122413-35-8*2
Methylamine anion		84.2	69.4	± 2.8	kJ/mol	31.05769 ± 0.00088	81096-79-9*0
Ethylaminylium		1092.4	1076.5	± 2.4	kJ/mol	44.0752 ± 0.0017	54387-08-5*11
Hydrogen chloride			-165.555	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*825
2-Methyl-2-propanamine		-133.10	-150.59	± 0.53	kJ/mol	73.1369 ± 0.0033	75-64-9*500
1,2-Diphenylethane		84.82	51.08	± 0.75	kJ/mol	182.2610 ± 0.0112	103-29-7*500
Anthracene		151.29	125.48	± 0.84	kJ/mol	178.2292 ± 0.0112	120-12-7*500
Phenanthrene		136.33	111.05	± 0.64	kJ/mol	178.2292 ± 0.0112	85-01-8*500
Diphenylacetylene		432.4	407.3	± 1.2	kJ/mol	178.2292 ± 0.0112	501-65-5*0
Diphenylacetylene		334.68	312.73	± 0.93	kJ/mol	178.2292 ± 0.0112	501-65-5*500
Benzophenone		-16.7	-41.9	± 1.5	kJ/mol	182.2179 ± 0.0104	119-61-9*500
Bicyclo[1.1.0]buta-1,1-diene-2,4-diyl		990.4	993.6	± 2.0	kJ/mol	49.0507 ± 0.0032	99417-53-50
Benzoic acid		-274.33	-294.13	± 0.19	kJ/mol	122.1213 ± 0.0056	65-85-0*0
Argonium		1151.8	1150.1	± 1.4	kJ/mol	40.9554 ± 0.0010	12254-68-1*0
Carbon		833.324	838.470	± 0.040	kJ/mol	12.01070 ± 0.00080	7440-44-0*2
Xenonium		1038.20	1036.42	± 0.88	kJ/mol	132.2974 ± 0.0200	37276-91-8*0
Sulfur dioxide			-320.69	± 0.14	kJ/mol	64.0648 ± 0.0060	7446-09-5*1000
Trifluorine cation		1530.0	1527.9	± 2.2	kJ/mol	56.9946610 ± 0.0000015	64710-22-1*0
Sulfur oxide peroxide		-26.0	-30.2	± 2.3	kJ/mol	80.0642 ± 0.0061	175799-68-5*2
Trisulfide		-83.72	-84.64	± 0.71	kJ/mol	96.1985 ± 0.0180	12597-04-5*0
Cyclohexene		27.19	-4.28	± 0.32	kJ/mol	82.1436 ± 0.0049	110-83-8*0
Cyclohexene		-21.96	-37.83	± 0.30	kJ/mol	82.1436 ± 0.0049	110-83-8*500
iso-Proplylide		128.8	110.4	± 1.5	kJ/mol	43.0882 ± 0.0024	25012-80-0*0
Aminomethyl anion		209.5	199.2	± 2.1	kJ/mol	30.04975 ± 0.00085	74215-21-7*0
Propylene cation		975.20	961.67	± 0.18	kJ/mol	42.0792 ± 0.0024	34504-10-4*0
Sulfuric acid			-887.70	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*893
2-Chloro ozone anion		-103.6	-105.9	± 3.2	kJ/mol	83.4514 ± 0.0013	141801-67-40
Sulfuric acid			-885.87	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*820
Sulfuric acid			-886.66	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*822
Sulfuric acid			-900.64	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*850
Methylaminilium		1135.2	1125.4	± 2.1	kJ/mol	30.04865 ± 0.00085	49784-84-1*0
Sulfur tetraoxide		-163.8	-169.6	± 2.9	kJ/mol	96.0636 ± 0.0061	12772-98-4*22
Dioxoperoxysulfane		-295.8	-295.5	± 2.7	kJ/mol	96.0636 ± 0.0061	103613-08-722
Methyliumylamino		1056.1	1049.2	± 1.7	kJ/mol	29.04071 ± 0.00083	65130-65-6*0
Methanethiol		-46.75	-44.57	± 0.44	kJ/mol	48.1085 ± 0.0061	74-93-1*500
Azanidylmethyl		224.4	217.1	± 2.2	kJ/mol	29.04181 ± 0.00083	127593-73-1*0
Hydroxydimethylsulfur		-19.7	-37.7	± 2.6	kJ/mol	79.1424 ± 0.0062	52670-37-8*0
Aminomethyliumyl		1039.5	1031.8	± 2.3	kJ/mol	29.04071 ± 0.00083	89302-94-3*0
Carbon disulfide		78.25	89.05	± 0.69	kJ/mol	76.1427 ± 0.0120	75-15-0*500
Hydrogen atom		-22.3	-24.0	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1000001
Aminomethylene anion		353.0	346.1	± 2.3	kJ/mol	29.04181 ± 0.00083	207914-86-1*0
Hydrogen atom		-17.0	-20.2	± 5.2	kJ/mol	1.007940 ± 0.000070	12385-13-6*1003001
Hydrogen atom		-14.1	-17.0	± 8.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1004001
Hydrogen atom		-30.3	-33.4	± 7.2	kJ/mol	1.007940 ± 0.000070	12385-13-6*1003004
Hydrogen atom		-28.3	-31.1	± 7.6	kJ/mol	1.007940 ± 0.000070	12385-13-6*1004004
Formyloxidanyl		-125.76	-127.12	± 0.55	kJ/mol	45.0174 ± 0.0010	16499-21-1*0
Dioxiranyl		217.3	213.9	± 2.0	kJ/mol	45.0174 ± 0.0010	120595-16-6*0
1,2-Propadien-1-ylium-1-yl-3-ylidene		1957.18	1965.05	± 0.82	kJ/mol	36.0316 ± 0.0024	118090-85-0*1
1-Propynylium		1547.1	1545.1	± 3.1	kJ/mol	39.0554 ± 0.0024	24858-94-4*0
Diethyl ether		-265.24	-277.55	± 0.75	kJ/mol	74.1216 ± 0.0033	60-29-7*500
1-Butanol		-312.82	-327.10	± 0.21	kJ/mol	74.1216 ± 0.0033	71-36-3*500
2-Methyl-2-propanol		-282.0	-312.1	± 1.9	kJ/mol	74.1216 ± 0.0033	75-65-0*0
Isocyanogen chloride		314.7	316.3	± 2.4	kJ/mol	61.4701 ± 0.0012	75754-69-7*0
Oxobromonium		1140.0	1132.2	± 1.6	kJ/mol	95.9029 ± 0.0010	142315-39-7*0
Cycloprop-1-enylium		1502.3	1498.0	± 2.2	kJ/mol	39.0554 ± 0.0024	117067-78-4*0
Methoxymethylene		144.8	134.4	± 1.4	kJ/mol	44.0526 ± 0.0017	19527-10-7*22
Glycolaldehyde		-292.1	-304.7	± 1.7	kJ/mol	60.0520 ± 0.0017	141-46-8*21
Glycolaldehyde		-290.4	-302.8	± 1.7	kJ/mol	60.0520 ± 0.0017	141-46-8*31
Glycolaldehyde		-283.8	-296.6	± 1.7	kJ/mol	60.0520 ± 0.0017	141-46-8*22
Dioxiranylidene anion		-110.2	-109.7	± 3.0	kJ/mol	44.01005 ± 0.00100	138832-58-30
Methyl acetate			-445.59	± 0.56	kJ/mol	74.0785 ± 0.0025	79-20-9*500
Carbon dication		4150.462	4155.609	± 0.040	kJ/mol	12.00960 ± 0.00080	16092-61-8*0
1-Hydroxy-2-propanone		-340.5	-360.3	± 1.7	kJ/mol	74.0785 ± 0.0025	116-09-6*21
1-Hydroxy-2-propanone		-337.9	-356.1	± 1.7	kJ/mol	74.0785 ± 0.0025	116-09-6*31
1-Hydroxy-2-propanone		-329.6	-349.6	± 1.7	kJ/mol	74.0785 ± 0.0025	116-09-6*22
Isocyanogen bromide		341.2	335.5	± 3.5	kJ/mol	105.9214 ± 0.0013	65997-98-0*0
Cycloprop-2-enylide		514.9	511.9	± 2.2	kJ/mol	39.0565 ± 0.0024	20829-57-6*0
Methoxyoxomethyl		-151.7	-160.8	± 1.5	kJ/mol	59.0440 ± 0.0017	16481-04-2*2
Hydrogen chloride			-166.712	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*951
Dioxymethylidyne cation		1436.6	1439.0	± 2.7	kJ/mol	44.00895 ± 0.00100	791121-04-52
Hydroxyoxoammoniumyl		984.1	977.7	± 1.8	kJ/mol	47.01293 ± 0.00061	80371-48-8*1
Isocyanogen iodide		341.7	341.9	± 4.9	kJ/mol	152.92191 ± 0.00080	66004-32-8*0
Isocyanogen iodide anion		123.0	125.2	± 9.3	kJ/mol	152.92246 ± 0.00080	66004-32-80
Propionic acid		-505.37	-509.52	± 0.17	kJ/mol	74.0785 ± 0.0025	79-09-4*500
Ammonium hydroxide			-363.82	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*801
Ethylene glycol		-448.63	-455.15	± 0.37	kJ/mol	62.0678 ± 0.0018	107-21-1*500
Oxalic acid		-819.55	-829.64	± 0.42	kJ/mol	90.0349 ± 0.0020	144-62-7*500
Dimethylamine			-42.59	± 0.56	kJ/mol	45.0837 ± 0.0017	124-40-3*500
Ammonium hydroxide			-364.67	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*803
Tetrafluorohydrazine		-13.4	-22.5	± 1.4	kJ/mol	104.00709 ± 0.00014	10036-47-2*0
(E)-2-Iminoethylium		1148.7	1138.9	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-33-2*12
1-Iminoethylium		833.7	823.2	± 3.0	kJ/mol	42.0594 ± 0.0016	128365-64-02
1-Iminoethanide		185.7	175.3	± 3.2	kJ/mol	42.0604 ± 0.0016	128365-65-12
1-Iminoethylium		1342.2	1333.3	± 3.9	kJ/mol	42.0594 ± 0.0016	128365-64-012
Nitrous acid anion		-105.84	-110.46	± 0.78	kJ/mol	47.01403 ± 0.00061	256393-36-9*2
N-Methylenemethaniminium		904.4	893.4	± 3.1	kJ/mol	42.0594 ± 0.0016	88333-01-1*2
2-Hydroxyethenyl		143.87	137.31	± 0.99	kJ/mol	43.0446 ± 0.0016	108665-16-3*11
(Methylimino)methanide		223.0	212.2	± 3.2	kJ/mol	42.0604 ± 0.0016	64709-60-01
Ammonium hydroxide			-365.13	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*805
2-Aminoethenylium		1110.6	1099.5	± 2.4	kJ/mol	42.0594 ± 0.0016	64724-21-6*12
2-Hydroxyethenyl		147.2	140.9	± 1.2	kJ/mol	43.0446 ± 0.0016	108665-16-3*22
2-Aminoethenyl anion		230.2	219.3	± 2.6	kJ/mol	42.0604 ± 0.0016	64724-21-62
Aziridine			92.36	± 0.86	kJ/mol	43.0678 ± 0.0016	151-56-4*500
2-Aziridinylium		1010.9	998.9	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-35-42
2-Aziridinide		316.2	304.1	± 3.4	kJ/mol	42.0604 ± 0.0016	111127-93-6*2
2-Aziridinyl		364.6	352.4	± 2.1	kJ/mol	42.0599 ± 0.0016	23838-09-72
2-Aziridinylium		1305.0	1293.3	± 4.1	kJ/mol	42.0594 ± 0.0016	91127-35-412
Trimethylamine			-48.26	± 0.87	kJ/mol	59.1103 ± 0.0025	75-50-3*500
2-Hydroxyethenyl		150.6	144.5	± 1.6	kJ/mol	43.0446 ± 0.0016	108665-16-3*12
Cyanogen anion		281.5	284.7	± 2.2	kJ/mol	52.0354 ± 0.0016	11118-88-0*0
Diisocyanogen cation		1825.3	1828.1	± 3.2	kJ/mol	52.0343 ± 0.0016	78800-21-21
Dioxymethylidyne cation		1388.2	1391.7	± 3.2	kJ/mol	44.00895 ± 0.00100	791121-04-5101
Cyanoaminyliumyl		1672.4	1673.7	± 2.6	kJ/mol	40.02363 ± 0.00081	316122-03-9*0
Cyanoamidogen anion		211.89	211.82	± 0.60	kJ/mol	40.02473 ± 0.00081	189879-95-6*0
Oxygen atom hexacation		42035.28	42037.14	± 0.12	kJ/mol	15.99611 ± 0.00030	14158-22-6*0
Cyanoaminylium		1460.2	1458.0	± 1.9	kJ/mol	41.03157 ± 0.00082	205443-18-1*2
Carbon dioxide anion		-340.6	-340.1	± 2.2	kJ/mol	44.01005 ± 0.00100	14485-07-5*0
Diazomethanide		479.8	478.3	± 1.8	kJ/mol	41.03267 ± 0.00082	100840-43-5*1
Methanol dimer		-398.3	-419.0	± 1.4	kJ/mol	64.0837 ± 0.0018	42845-44-3*0
Cyclopropenylidene anion		544.2	543.8	± 2.2	kJ/mol	38.0485 ± 0.0024	16165-40-50
Bicyclo[1.1.0]buta-1,3-dien-4-ylium-2-yl		2087.7	2097.5	± 2.3	kJ/mol	48.0423 ± 0.0032	289679-91-0*0
1H-Diazirin-3-ylium		1640.4	1638.1	± 2.0	kJ/mol	41.03157 ± 0.00082	735234-64-7*1
1H-diazirin-3-ide		655.3	652.1	± 2.1	kJ/mol	41.03267 ± 0.00082	735234-64-71
1H-Diazirin-3-yl		618.7	615.8	± 1.6	kJ/mol	41.03212 ± 0.00082	324529-57-9*0
Peroxyhypochlorite		-252.78	-251.75	± 0.34	kJ/mol	67.4520 ± 0.0011	224299-14-3*0
Chloryl ion		1100.26	1097.60	± 0.53	kJ/mol	67.4510 ± 0.0011	25052-55-5*0
Cyanamide			59.04	± 0.52	kJ/mol	42.04006 ± 0.00082	420-04-2*500
Dihydrogen		-0.000	-0.058	± 0.000	kJ/mol	2.01588 ± 0.00014	1333-74-0*2
Bicyclo[1.1.0]buta-1,3-dien-2-yl anion		803.1	810.7	± 1.8	kJ/mol	48.0433 ± 0.0032	289679-89-6*0
Methylenediazeniumide		375.2	368.7	± 1.9	kJ/mol	42.04006 ± 0.00082	24153-51-3*0
Methylidynehydrazinium-1-yl		1251.8	1245.8	± 1.9	kJ/mol	42.03951 ± 0.00082	160951-16-6*0
(Iminomethyl)imidogen		420.1	413.1	± 2.9	kJ/mol	42.04006 ± 0.00082	87570-07-8*11
Diazomethyliumyl		1639.6	1640.8	± 3.1	kJ/mol	40.02363 ± 0.00081	307495-90-5*0
Diazomethylene anion		407.0	407.1	± 2.4	kJ/mol	40.02473 ± 0.00081	205498-92-6*0
3H-Diazirin-3-ylidene		579.1	579.5	± 2.7	kJ/mol	40.02418 ± 0.00081	253308-70-2*0
Tetrafluorohydrazine cation		1129.2	1122.5	± 2.5	kJ/mol	104.00654 ± 0.00014	37366-75-9*1
Ammonium hydroxide			-365.43	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*807
Hydrogen fluoride			-321.95	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*822
Ethynylaminylium		1277.8	1277.4	± 2.6	kJ/mol	40.0435 ± 0.0016	103835-08-1*1
Chloromethyliumylidene		1282.8	1285.8	± 2.4	kJ/mol	47.4629 ± 0.0012	69773-94-0*0
Chloromethylidyne anion		319.8	323.6	± 2.5	kJ/mol	47.4639 ± 0.0012	117129-77-8*0
(Z)-Diazene anion	$[H]/N=[N-]\[H]$	280.0	273.3	± 2.0	kJ/mol	30.02991 ± 0.00020	86631-37-00
Chlorodioxidanyl		100.36	99.27	± 0.34	kJ/mol	67.4515 ± 0.0011	17376-09-9*0
Carbon dioxide cation		1335.0	1335.5	± 2.4	kJ/mol	44.00895 ± 0.00100	12181-61-2*1
Paraformaldehyde			-176.4	± 1.5	kJ/mol	30.02598 ± 0.00087	30525-89-4*500
Peroxyhypochlorous acid cation		1030.4	1024.6	± 2.5	kJ/mol	68.4589 ± 0.0011	67952-07-21
1,3-Butadiynyl anion		677.2	686.3	± 1.1	kJ/mol	48.0433 ± 0.0032	59158-53-1*0
Poly(vinylchloride)		-84.6	-94.0	± 1.3	kJ/mol	62.4979 ± 0.0018	9002-86-2*500
1,1-Dichloroethene			-23.43	± 0.51	kJ/mol	96.9427 ± 0.0024	75-35-4*500
2-Cyclopropyn-1-ylidenemethyliumyl		2239.7	2247.6	± 2.3	kJ/mol	48.0423 ± 0.0032	289679-92-1*0
Hydrogen fluoride			-321.96	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*905
2-Propen-3-ylium-1-ylidyne		1791.2	1792.8	± 2.6	kJ/mol	38.0474 ± 0.0024	161054-36-0*0
Peroxyhypochlorous acid anion		-32.2	-33.9	± 2.6	kJ/mol	68.4600 ± 0.0011	67952-08-32
Propenediylidene anion		588.8	590.1	± 2.3	kJ/mol	38.0485 ± 0.0024	161054-36-00
Iodoform			181.11	± 0.60	kJ/mol	393.73205 ± 0.00081	75-47-8*500
Diiodomethane			68.21	± 0.58	kJ/mol	267.83552 ± 0.00081	75-11-6*590
Dichloromethane			-122.70	± 0.36	kJ/mol	84.9320 ± 0.0020	75-09-2*590
Ammonium hydroxide			-366.00	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*815
Tribromofluoromethane		-97.9	-121.9	± 1.4	kJ/mol	270.7211 ± 0.0031	353-54-8*0
Tribromochloromethane		86.7	63.9	± 1.4	kJ/mol	287.1754 ± 0.0032	594-15-0*0
Tetrazete		764.9	759.0	± 1.8	kJ/mol	56.02696 ± 0.00028	42851-09-2*0
Difluoromethylene anion		-211.16	-209.98	± 0.58	kJ/mol	50.00805 ± 0.00080	66212-40-6*0
Fluoromethylidyne anion		200.8	204.3	± 1.9	kJ/mol	31.00965 ± 0.00080	33412-12-3*0
Hydrogen fluoride			-321.85	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*903
Tetraazatetrahedrane		763.7	757.3	± 1.7	kJ/mol	56.02696 ± 0.00028	12596-63-3*0
Ammonium hydroxide			-366.20	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*818
Difluorovinylidene		129.4	130.6	± 2.2	kJ/mol	62.0182 ± 0.0016	41895-33-4*0
Fluoroethynylium		1536.5	1541.2	± 2.3	kJ/mol	43.0193 ± 0.0016	268566-69-4*0
2-Oxo-1-ethylium-1-yl		1289.4	1286.0	± 2.5	kJ/mol	42.0361 ± 0.0016	214464-96-7*11
Dioxohydrazine		172.90	171.13	± 0.14	kJ/mol	60.01228 ± 0.00062	16824-89-8*2
Oxygen difluoride cation		1292.10	1289.58	± 0.66	kJ/mol	53.99566 ± 0.00030	39432-25-2*0
Oxoethylidene anion		86.9	83.6	± 2.1	kJ/mol	42.0372 ± 0.0016	106543-38-8*1
Chloro(chlorooxy)methylene		98.	101.	± 15.	kJ/mol	98.9155 ± 0.0020	479587-31-0*11
Chlorooxomethylium		783.7	783.9	± 2.2	kJ/mol	63.4623 ± 0.0012	38264-03-8*0
2-Iodoethanol			-207.2	± 2.4	kJ/mol	171.9650 ± 0.0017	624-76-0*590
1,3-Butadiyne cation		1440.26	1442.12	± 0.55	kJ/mol	50.0581 ± 0.0032	55468-55-8*0
Carbon monoxide anion		30.0	33.7	± 2.3	kJ/mol	28.01065 ± 0.00085	12539-63-8*0
1,3,5-Hexatriynide		635.6	644.1	± 2.3	kJ/mol	73.0727 ± 0.0048	85905-65-3*0
Carbon suboxide cation		928.8	932.3	± 1.1	kJ/mol	68.0304 ± 0.0025	151528-67-5*0
Carbon suboxide anion		-131.1	-127.7	± 2.5	kJ/mol	68.0314 ± 0.0025	109362-94-9*0
Benzene anion		209.1	197.2	± 1.2	kJ/mol	78.1124 ± 0.0048	34562-85-1*0
Acetonitrile			40.63	± 0.22	kJ/mol	41.0520 ± 0.0016	75-05-8*500
Ammonium hydroxide			-366.32	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*822
o-Benzyne		625.8	616.4	± 1.1	kJ/mol	76.0960 ± 0.0048	462-80-6*1
m-Benzyne		527.5	519.0	± 1.2	kJ/mol	76.0960 ± 0.0048	1828-89-3*0
p-Benzyne cation		1423.7	1416.4	± 2.0	kJ/mol	76.0954 ± 0.0048	121058-09-1*0
p-Benzyne		587.1	577.7	± 1.2	kJ/mol	76.0960 ± 0.0048	3355-34-8*0
Deuterium hydride		0.328	0.319	± 0.000	kJ/mol	3.022042 ± 0.000070	13983-20-5*0
Toluene		19.80	12.04	± 0.31	kJ/mol	92.1384 ± 0.0056	108-88-3*500
Carbon monoxide		465.584	469.291	± 0.026	kJ/mol	28.01010 ± 0.00085	630-08-0*1
Dihydrogen cation		1489.060	1488.480	± 0.000	kJ/mol	2.01533 ± 0.00014	12184-90-6*1
Cyclobutane			3.90	± 0.38	kJ/mol	56.1063 ± 0.0032	287-23-0*590
Cyclopentadienylium		1088.72	1075.85	± 0.80	kJ/mol	65.0927 ± 0.0040	29661-18-5*0
Ammonium hydroxide			-366.36	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*828
Cycloheptene		-25.1	-46.2	± 1.7	kJ/mol	96.1702 ± 0.0057	628-92-2*500
Cycloheptatriene		154.47	145.68	± 0.92	kJ/mol	92.1384 ± 0.0056	544-25-2*500
Methylcyclopropane			1.92	± 0.59	kJ/mol	56.1063 ± 0.0032	594-11-6*590
Phenylethene			104.49	± 0.47	kJ/mol	104.1491 ± 0.0064	100-42-5*500
Difluorodioxidanium		1283.7	1279.2	± 2.3	kJ/mol	69.99506 ± 0.00060	7783-44-01
Benzonitrile		161.18	163.54	± 0.90	kJ/mol	103.1213 ± 0.0056	100-47-0*500
Isocyanobenzene		321.0	307.1	± 1.7	kJ/mol	103.1213 ± 0.0056	931-54-4*0
Isoindene		269.9	246.5	± 1.9	kJ/mol	116.1598 ± 0.0072	270-53-1*0
Dioxygen difluoride		75.1	71.7	± 3.6	kJ/mol	69.99561 ± 0.00060	183051-89-0*0
Phenol		-146.15	-161.99	± 0.64	kJ/mol	94.1112 ± 0.0048	108-95-2*500
Anisole			-117.51	± 0.61	kJ/mol	108.1378 ± 0.0056	100-66-3*500
Benzaldehyde		-85.59	-86.66	± 0.90	kJ/mol	106.1219 ± 0.0056	100-52-7*500
Dioxohydrazine		172.90	171.13	± 0.14	kJ/mol	60.01228 ± 0.00062	16824-89-8*0
Acetophenone			-139.3	± 1.1	kJ/mol	120.1485 ± 0.0064	98-86-2*500
1-Phenylethenol		-8.7	-32.5	± 2.0	kJ/mol	120.1485 ± 0.0064	4383-15-7*0
p-Tolualdehyde			-125.8	± 1.3	kJ/mol	120.1485 ± 0.0064	104-87-0*500
Perchloryl cation		1252.1	1246.4	± 2.5	kJ/mol	83.4504 ± 0.0013	23594-88-9*0
o-Tolualdehyde			-118.9	± 1.1	kJ/mol	120.1485 ± 0.0064	529-20-4*500
Tetraoxodinitrogen cation		1030.6	1025.1	± 2.6	kJ/mol	92.0105 ± 0.0012	64476-91-1*0
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*833
Fluorobenzene anion		-15.3	-27.1	± 1.6	kJ/mol	96.1029 ± 0.0048	34561-55-2*0
Hexafluorobenzene anion		-992.7	-995.0	± 3.5	kJ/mol	186.0552 ± 0.0048	37551-90-9*0
Tetraoxidanyl		53.0	46.0	± 5.1	kJ/mol	65.0055 ± 0.0012	69696-93-1*2
m-Chlorophenylium		1161.7	1151.6	± 2.6	kJ/mol	111.5481 ± 0.0049	127983-85-1*0
Dihydrogen		1.417	0.019	± 0.000	kJ/mol	2.01588 ± 0.00014	1333-74-0*1
p-Chlorophenylium		1149.0	1139.5	± 2.5	kJ/mol	111.5481 ± 0.0049	42766-43-8*0
o-Chlorophenylium		1168.3	1159.0	± 2.5	kJ/mol	111.5481 ± 0.0049	137963-70-3*0
Ammonia anion		94.3	87.3	± 2.4	kJ/mol	17.03111 ± 0.00022	37353-00-7*0
Trichlorine		125.3	125.8	± 2.0	kJ/mol	106.3581 ± 0.0027	11094-65-8*0
Iodobenzene cation		1023.62	1008.19	± 0.99	kJ/mol	204.0078 ± 0.0048	38406-85-8*0
Nitrobenzene			7.4	± 1.3	kJ/mol	123.1094 ± 0.0049	98-95-3*500
Furan		-62.55	-61.94	± 0.60	kJ/mol	68.0740 ± 0.0032	110-00-9*500
Hydroxymethoxy		-159.58	-169.43	± 0.84	kJ/mol	47.0333 ± 0.0010	72144-78-6*0
Pyridine		102.23	100.20	± 0.38	kJ/mol	79.0999 ± 0.0040	110-86-1*500
Hydrogen iodide			-56.824	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*800
Hydraziniumyl		886.7	873.3	± 2.0	kJ/mol	32.04469 ± 0.00031	20771-51-1*0
Nitromethane		-113.95	-112.76	± 0.39	kJ/mol	61.0401 ± 0.0010	75-52-5*500
Hydrogen difluoride cation		1241.	1238.	± 17.	kJ/mol	39.004198 ± 0.000070	126950-54-7*1
Nitroethane		-141.89	-144.10	± 0.57	kJ/mol	75.0666 ± 0.0017	79-24-3*500
Isodiazene anion		380.9	374.1	± 2.1	kJ/mol	30.02991 ± 0.00020	63986-30-10
Glycine			-514.22	± 0.20	kJ/mol	75.0666 ± 0.0017	56-40-6*1000
Oxadiazirine cation		1509.9	1507.2	± 2.4	kJ/mol	44.01233 ± 0.00033	227934-45-40
Hydroxymethyleneoxonium		792.97	782.83	± 0.62	kJ/mol	47.0328 ± 0.0010	77144-12-8*0
Ethyl hydroperoxide			-209.	± 20.	kJ/mol	62.0678 ± 0.0018	3031-74-1*500
2,2,4-Trimethylpentane		-224.2	-258.6	± 1.5	kJ/mol	114.2285 ± 0.0065	540-84-1*500
Norbornadiene			206.3	± 1.6	kJ/mol	92.1384 ± 0.0056	121-46-0*500
2,3-Butanedione			-365.56	± 0.53	kJ/mol	86.0892 ± 0.0033	431-03-8*500
Succinic acid		-801.1	-823.3	± 2.7	kJ/mol	118.0880 ± 0.0034	110-15-6*0
1,2-Diiodoethane		87.84	73.18	± 0.90	kJ/mol	281.8621 ± 0.0016	624-73-7*0
1,2-Diiodoethane			9.31	± 0.60	kJ/mol	281.8621 ± 0.0016	624-73-7*500
2-Butanone		-267.71	-273.20	± 0.79	kJ/mol	72.1057 ± 0.0033	78-93-3*500
Trioxirane		272.5	269.9	± 1.3	kJ/mol	47.99820 ± 0.00090	153851-84-4*0
Acrolein cation		920.02	909.88	± 0.79	kJ/mol	56.0627 ± 0.0024	84005-05-0*1
Acrolein anion		-71.8	-81.9	± 3.1	kJ/mol	56.0638 ± 0.0024	23555-87-5*2
Acrolein			-95.57	± 0.96	kJ/mol	56.0633 ± 0.0024	107-02-8*500
1-Oxo-2-propenylium		772.8	766.0	± 3.0	kJ/mol	55.0548 ± 0.0024	35335-83-2*2
1-Oxo-2-propenide		50.7	46.0	± 2.6	kJ/mol	55.0559 ± 0.0024	78944-75-9*1
Chlorine chlorite		177.4	175.1	± 2.2	kJ/mol	102.9042 ± 0.0019	105206-44-8*2
3-Oxo-1-propenylium		1197.7	1192.0	± 3.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*121
NON cation		1444.0	1444.2	± 2.8	kJ/mol	44.01233 ± 0.00033	227934-46-50
Ethenedione anion		-149.7	-147.1	± 1.7	kJ/mol	56.0207 ± 0.0017	77783-15-4*0
Urea		-317.73	-333.33	± 0.12	kJ/mol	60.05534 ± 0.00091	57-13-6*500
1,2-Butadienylium		1315.5	1307.5	± 1.7	kJ/mol	53.0820 ± 0.0032	65114-67-21
Trioxidanyl		25.36	23.27	± 0.13	kJ/mol	49.00614 ± 0.00090	12500-78-6*0
Formamide			-251.05	± 0.28	kJ/mol	45.04066 ± 0.00088	75-12-7*500
Aminohydroxymethylene		217.2	208.7	± 3.0	kJ/mol	45.04066 ± 0.00088	160720-48-9*11
Acetamide			-315.89	± 0.53	kJ/mol	59.0672 ± 0.0017	60-35-5*500
Acrylonitrile		446.5	441.1	± 1.7	kJ/mol	53.0627 ± 0.0024	107-13-1*2
Acrylonitrile		146.53	154.19	± 0.73	kJ/mol	53.0627 ± 0.0024	107-13-1*500
Isocyanoethene		544.2	539.3	± 1.8	kJ/mol	53.0627 ± 0.0024	14668-82-7*2
NON anion		495.3	492.8	± 2.5	kJ/mol	44.01343 ± 0.00033	227934-47-60
1-Isocyanoethylidene		527.9	523.2	± 1.1	kJ/mol	53.0627 ± 0.0024	498544-34-60
Carbonate		-225.2	-228.4	± 2.5	kJ/mol	60.0100 ± 0.0012	3812-32-6*0
1,3-Butadienylium		1255.9	1246.6	± 2.3	kJ/mol	53.0820 ± 0.0032	86181-69-3*1
Carbon dioxide			-412.868	± 0.018	kJ/mol	44.00950 ± 0.00100	124-38-9*1000
1,3-Dioxolan-2-one			-581.53	± 0.36	kJ/mol	88.0621 ± 0.0026	96-49-1*500
Hydrazine		57.30	50.74	± 0.18	kJ/mol	32.04524 ± 0.00031	302-01-2*500
Tetraoxygen		104.4	102.4	± 3.5	kJ/mol	63.9976 ± 0.0012	12596-83-7*11
Vinylacetylene			266.5	± 2.1	kJ/mol	52.0746 ± 0.0032	689-97-4*500
Nitric acid trihydrate		-1061.98	-1055.13	± 0.20	kJ/mol	117.0587 ± 0.0019	13444-83-2*500
Oxygen difluoride anion		-202.1	-201.9	± 2.7	kJ/mol	53.99675 ± 0.00030	7783-41-70
Hydrogen peroxide		-193.105	-187.288	± 0.077	kJ/mol	34.01468 ± 0.00062	7722-84-1*500
Dihydrogen cation		1488.364	1488.480	± 0.000	kJ/mol	2.01533 ± 0.00014	12184-90-6*2
Vinylvinylidene		690.5	684.4	± 2.6	kJ/mol	52.0746 ± 0.0032	148759-16-4*11
Isocyanic fluoride		300.9	302.7	± 1.8	kJ/mol	45.01584 ± 0.00080	16992-26-0*0
Nitric acid monohydrate		-479.09	-472.59	± 0.18	kJ/mol	81.0282 ± 0.0012	13444-82-1*500
1-Buten-3-ynylium		1483.2	1480.7	± 1.6	kJ/mol	51.0661 ± 0.0032	84654-85-3*2
Hydrogen difluoride cation		1267.6	1265.4	± 4.1	kJ/mol	39.004198 ± 0.000070	126950-54-71
Ethynylene		827.207	833.912	± 0.085	kJ/mol	24.0214 ± 0.0016	12070-15-4*1
1,3-Propanediyl		320.3	308.5	± 1.5	kJ/mol	42.0797 ± 0.0024	32458-33-6*12
2-Cyclopropen-1-ylidenemethylium		1433.2	1429.5	± 1.9	kJ/mol	51.0661 ± 0.0032	112936-36-4*1
Ammonium hydroxide			-366.30	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*844
1,3-Cyclobutadien-1-ylium		1473.1	1468.5	± 1.9	kJ/mol	51.0661 ± 0.0032	81913-77-1*1
1,3-Cyclobutadien-1-yl anion		616.5	611.9	± 2.1	kJ/mol	51.0672 ± 0.0032	154675-37-3*0
Iodine monochloride		-36.511	-35.537	± 0.063	kJ/mol	162.35717 ± 0.00090	7790-99-0*510
Cyclobutenylium		1038.7	1025.6	± 2.8	kJ/mol	53.0820 ± 0.0032	12316-90-4*0
Butyraldehyde		-235.80	-239.32	± 0.84	kJ/mol	72.1057 ± 0.0033	123-72-8*500
Peroxychlorous acid		102.7	96.9	± 2.4	kJ/mol	84.4588 ± 0.0013	177778-92-6*2
Dihydrogen fluoride		-56.5	-54.2	± 1.7	kJ/mol	21.01428 ± 0.00014	12592-22-2*2
Peroxynitrous acid		-5.74	-11.57	± 0.35	kJ/mol	63.01288 ± 0.00091	14691-52-2*0
Trihydrogen		756.931	754.146	± 0.015	kJ/mol	3.02382 ± 0.00021	12184-91-7*2
Dimethyl carbonate			-608.58	± 0.31	kJ/mol	90.0779 ± 0.0026	616-38-6*500
Disilicon cation		1352.3	1355.9	± 2.4	kJ/mol	56.17045 ± 0.00060	12597-36-3*0
Dioxosilane cation		946.3	946.2	± 2.8	kJ/mol	60.08375 ± 0.00067	59458-81-0*0
Silicate		-477.5	-478.2	± 2.6	kJ/mol	60.08485 ± 0.00067	53095-83-3*0
Formic acid			-425.44	± 0.45	kJ/mol	46.0254 ± 0.0010	64-18-6*800
Oxosilicate		-106.0	-104.8	± 2.6	kJ/mol	44.08545 ± 0.00042	12503-59-2*0
Silicon carbide		-71.9	-72.9	± 1.4	kJ/mol	40.09620 ± 0.00085	409-21-2*502
Ammonium hydroxide			-366.25	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*850
Bicyclo[1.1.1]pentane-1,3-diyl		783.4	766.2	± 1.8	kJ/mol	66.1011 ± 0.0040	863892-18-6*1
Fluorosilylidyne anion		-139.0	-137.7	± 1.8	kJ/mol	47.08445 ± 0.00030	11080-58-3*0
Chlorine hydride oxide		163.9	154.0	± 2.4	kJ/mol	84.4588 ± 0.0013	1027055-52-2*0
Silane cation		1104.7	1097.5	± 1.6	kJ/mol	32.11671 ± 0.00041	34826-51-2*0
Silylium		989.66	984.08	± 0.89	kJ/mol	31.10877 ± 0.00037	41753-67-7*0
Triiodine		153.4	149.4	± 3.6	kJ/mol	380.713410 ± 0.000090	12596-31-5*0
Silylidyne anion		250.0	251.2	± 1.1	kJ/mol	29.09399 ± 0.00031	68865-96-3*0
Disilanylium		981.5	970.2	± 2.5	kJ/mol	61.21015 ± 0.00069	86860-82-4*0
1-Disilanylium-1-yl		1124.1	1116.5	± 2.2	kJ/mol	60.20221 ± 0.00066	108492-64-4*0
Di-mu-hydrodihydrodisilicon cation		1194.4	1184.8	± 3.4	kJ/mol	60.20221 ± 0.00066	129970-82-72
Di-mu-hydrodihydrodisilicon anion		296.7	289.2	± 3.5	kJ/mol	60.20331 ± 0.00066	129970-83-82
1-Ethenylium-1-yl		1507.1	1507.1	± 2.1	kJ/mol	26.0367 ± 0.0016	80541-07-7*0
Bromosyl bromide		180.4	164.6	± 2.1	kJ/mol	175.8074 ± 0.0020	68322-97-4*0
Vinylcyclopentadienylium		1076.9	1059.5	± 3.7	kJ/mol	91.1299 ± 0.0056	146893-89-2*2
Ammonium hydroxide			-366.02	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*855
Ammonium hydroxide			-365.86	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*861
Hydrazoic acid cation		1333.73	1328.06	± 0.82	kJ/mol	43.02761 ± 0.00022	58852-14-5*0
Hydronium radical		-18.5	-21.5	± 2.1	kJ/mol	19.02322 ± 0.00037	12168-76-2*100
Bromoniumyl		1098.16	1090.32	± 0.12	kJ/mol	80.9114 ± 0.0010	12258-64-9*0
Nitrosyl nitrite anion		-103.1	-106.2	± 2.8	kJ/mol	76.01223 ± 0.00091	122413-35-81
Hydrazoic acid anion		309.1	302.8	± 2.3	kJ/mol	43.02871 ± 0.00022	203264-98-6*1
2,4-Hexadiyne		319.19	312.84	± 0.95	kJ/mol	78.1118 ± 0.0048	2809-69-0*500
Hydrochlorate ion		-25.2	-24.2	± 2.5	kJ/mol	36.46119 ± 0.00090	63099-75-2*0
Trimethylenecyclopropane		454.3	441.4	± 1.8	kJ/mol	78.1118 ± 0.0048	3227-90-5*0
3,4-Bis(methylene)cyclobutene		355.6	341.1	± 1.8	kJ/mol	78.1118 ± 0.0048	5291-90-7*0
1-Ethynylcyclobutene		402.3	388.0	± 1.8	kJ/mol	78.1118 ± 0.0048	813466-25-0*0
3-Methyl-1,2-pentadien-4-yne		414.7	403.5	± 2.2	kJ/mol	78.1118 ± 0.0048	813466-14-7*0
Isoprene			48.99	± 0.69	kJ/mol	68.1170 ± 0.0040	78-79-5*500
Dioxodiazoxane		125.7	120.4	± 2.1	kJ/mol	76.01168 ± 0.00091	122413-35-8*3
1-Ethynyl-2-propyn-1-ylidene		787.5	792.5	± 2.1	kJ/mol	62.0694 ± 0.0040	882068-94-2*21
1-Ethynyl-2-propyn-1-ylidene		796.1	801.0	± 2.6	kJ/mol	62.0694 ± 0.0040	882068-94-2*22
1,3-Pentadiyne-1.5-diyl		783.8	787.4	± 2.1	kJ/mol	62.0694 ± 0.0040	117992-81-1*0
1,3-Pentadiyne			385.1	± 5.0	kJ/mol	64.0853 ± 0.0040	4911-55-1*500
Penta-1,4-diyn-3-ide		443.9	443.3	± 3.2	kJ/mol	63.0779 ± 0.0040	553662-77-4*1
Propane cation		974.7	954.6	± 1.7	kJ/mol	44.0951 ± 0.0025	34479-70-4*0
1-Aminoethylium		683.4	664.8	± 2.3	kJ/mol	44.0752 ± 0.0017	30208-36-70
1-Propanamine		-93.76	-101.37	± 0.40	kJ/mol	59.1103 ± 0.0025	107-10-8*500
2-Propanamine		-101.52	-112.14	± 0.52	kJ/mol	59.1103 ± 0.0025	75-31-0*500
Naphthalene		94.71	75.13	± 0.55	kJ/mol	128.1705 ± 0.0080	91-20-3*500
Azide			272.69	± 0.47	kJ/mol	42.02077 ± 0.00021	14343-69-2*800
Methylamine			-45.18	± 0.44	kJ/mol	31.05714 ± 0.00088	74-89-5*500
1-Propenylium		1231.9	1221.6	± 1.7	kJ/mol	41.0713 ± 0.0024	50457-58-4*2
Biphenyl		121.6	97.2	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*500
Biphenyl		121.6	97.2	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*520
1-Propenylide		204.0	192.7	± 1.8	kJ/mol	41.0723 ± 0.0024	65887-20-9*2
Aniline		37.29	31.03	± 0.63	kJ/mol	93.1265 ± 0.0048	62-53-3*500
Dihelium		1733.310	1729.576	± 0.018	kJ/mol	8.0052040 ± 0.0000040	12184-98-4*1
Dihydrohelium cation		1467.27	1461.99	± 0.44	kJ/mol	6.01793 ± 0.00014	12500-88-8*0
Neon cation		2080.662	2080.769	± 0.000	kJ/mol	20.17915 ± 0.00060	14782-23-1*0
Pyruvic acid			-588.44	± 0.73	kJ/mol	88.0621 ± 0.0026	127-17-3*500
Disulfur cation		1031.49	1032.08	± 0.32	kJ/mol	64.1315 ± 0.0120	12597-02-3*0
Sulfur trioxide			-440.87	± 0.30	kJ/mol	80.0642 ± 0.0061	7446-11-9*590
Cyclic thiozone		168.5	166.7	± 2.3	kJ/mol	96.1980 ± 0.0180	12597-03-40
Trifluoroammoniumyl		1093.4	1087.3	± 2.3	kJ/mol	71.001401 ± 0.000070	54384-83-7*0
Hydroxylamine			-97.0	± 2.2	kJ/mol	33.02996 ± 0.00037	7803-49-8*1000
Sulfanylium		1148.36	1148.36	± 0.19	kJ/mol	33.0734 ± 0.0060	12273-42-6*0
Dioxiranylidene cation		1409.1	1410.3	± 2.6	kJ/mol	44.00895 ± 0.00100	138832-57-20
Sulfuric acid			-887.09	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*824
Trifluorine		80.9	82.1	± 2.5	kJ/mol	56.9952096 ± 0.0000015	73455-86-4*0
Ethylideneoxoniumyloxy		950.9	938.4	± 2.2	kJ/mol	60.0514 ± 0.0017	1427752-17-7*1
n-Heptane		-201.46	-223.91	± 0.44	kJ/mol	100.2019 ± 0.0057	142-82-5*500
Dioxidanyl dimer		-8.28	-17.85	± 0.50	kJ/mol	66.0135 ± 0.0012	240125-82-0*1
Sulfur hydroxide oxide cation		658.6	647.8	± 3.4	kJ/mol	97.0710 ± 0.0061	12337-07-42
Sulfurous acid		-511.31	-520.82	± 0.89	kJ/mol	82.0801 ± 0.0061	7782-99-2*0
Sulfurous acid			-606.49	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*1000
Hydrogen sulfite			-631.83	± 0.15	kJ/mol	81.0727 ± 0.0061	15181-46-1*1000
Sulfur dioxide - hydroxyl complex		-266.0	-268.1	± 2.2	kJ/mol	81.0721 ± 0.0061	32750-86-0100
Trifluoronitrate		-246.7	-248.9	± 2.5	kJ/mol	71.002498 ± 0.000070	37366-69-1*0
Sulfate monoanion		-736.9	-744.6	± 2.2	kJ/mol	96.0641 ± 0.0061	12143-45-2*0
n-Octane		-226.28	-249.41	± 0.52	kJ/mol	114.2285 ± 0.0065	111-65-9*500
n-Nonane		-247.62	-274.48	± 0.47	kJ/mol	128.2551 ± 0.0073	111-84-2*500
2,4,5-Trioxa-1,3-diazabicyclo[1.1.1]pentane		602.5	593.3	± 2.1	kJ/mol	76.01168 ± 0.00091	224950-18-9*0
1-Methyl-1-ethylium-1-yl		1058.3	1045.8	± 1.9	kJ/mol	42.0792 ± 0.0024	121408-19-3*0
n-Decane		-272.87	-300.41	± 0.75	kJ/mol	142.2817 ± 0.0081	124-18-5*500
1,5-Hexadiene			54.56	± 0.31	kJ/mol	82.1436 ± 0.0049	592-42-7*500
Platinum atom cation		1427.8	1428.3	± 1.7	kJ/mol	195.0775 ± 0.0020	20561-56-2*0
Platinum dimer		823.5	822.5	± 3.9	kJ/mol	390.1560 ± 0.0040	12596-95-1*0
Platinum hydride		451.6	450.7	± 3.8	kJ/mol	196.0859 ± 0.0020	13966-55-7*0
Platinum hydride cation		1363.1	1382.3	± 4.9	kJ/mol	196.0854 ± 0.0020	87882-39-1*0
Hydrogen atom		-37.0	-38.7	± 1.1	kJ/mol	1.007940 ± 0.000070	12385-13-6*1000000
Isopropylidene anion		282.5	268.4	± 2.0	kJ/mol	42.0803 ± 0.0024	121408-19-30
Hydrogen atom		-33.4	-35.1	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1000004
Nitrogen atom dianion		1062.8	1065.0	± 2.8	kJ/mol	14.007837 ± 0.000070	16727-21-2*0
Diazirinylium		1384.8	1381.2	± 2.1	kJ/mol	41.03157 ± 0.00082	77116-26-8*2
Ketene		-45.33	-48.39	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*21
Iminomethylimidogen cation		1677.6	1676.4	± 2.3	kJ/mol	41.03157 ± 0.00082	150296-30-31
Iminomethylimidogen anion		405.3	402.1	± 2.5	kJ/mol	41.03267 ± 0.00082	150296-30-3*1
Difluoroaminylium		1376.5	1373.9	± 2.4	kJ/mol	52.002998 ± 0.000070	31685-31-1*1
Iodine monochloride			-24.048	± 0.063	kJ/mol	162.35717 ± 0.00090	7790-99-0*590
Tetrafluorohydrazine		-12.5	-22.1	± 1.4	kJ/mol	104.00709 ± 0.00014	10036-47-2*2
Ammonia			-80.45	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*850
Fluorine atom pentacation		30617.6	30619.4	± 1.8	kJ/mol	18.99566030 ± 0.00000050	14701-05-4*0
Trihydrogen		745.878	743.094	± 0.062	kJ/mol	3.02382 ± 0.00021	12184-91-7*1
(Iminomethyl)imidogen		420.1	413.3	± 2.9	kJ/mol	42.04006 ± 0.00082	87570-07-8*1
Chlorine atom dication		3668.474	3670.081	± 0.013	kJ/mol	35.45160 ± 0.00090	15723-23-6*0
Bicyclo[1.1.0]buta-1,3-diene-2,4-diyl		1047.14	1054.73	± 0.68	kJ/mol	48.0428 ± 0.0032	12184-80-4*2
Fluoroimidogen		369.43	369.41	± 0.80	kJ/mol	33.005143 ± 0.000070	13967-06-1*2
2-Hydroxyethylium		1024.8	1012.2	± 2.0	kJ/mol	45.0600 ± 0.0017	38607-31-7*1
Methylaminyliumyl		1388.2	1381.9	± 2.2	kJ/mol	29.04071 ± 0.00083	56924-51-7*1
Formaldehyde		-105.380	-109.220	± 0.094	kJ/mol	30.02598 ± 0.00087	50-00-0*21
Polyoxymethylene			-170.85	± 0.21	kJ/mol	30.02598 ± 0.00087	9002-81-7*500
Ethynylaminylium		1350.6	1348.8	± 2.5	kJ/mol	40.0435 ± 0.0016	103835-08-1*2
Formaldehyde			-165.65	± 0.22	kJ/mol	30.02598 ± 0.00087	50-00-0*1000
1,3-Butadiyn-4-ylium-1-yl		2109.8	2120.5	± 2.8	kJ/mol	48.0423 ± 0.0032	124708-46-9*0
Dioxaziridine		277.5	270.8	± 1.9	kJ/mol	47.01348 ± 0.00061	67394-35-8*0
1,3-Butadiyne-1,4-diyl		1052.24	1062.21	± 0.64	kJ/mol	48.0428 ± 0.0032	78015-07-3*1
Peroxyhypochlorous acid cation		1050.8	1045.2	± 2.5	kJ/mol	68.4589 ± 0.0011	67952-07-22
Oxygen atom dication		4949.458	4953.000	± 0.013	kJ/mol	15.99830 ± 0.00030	14127-63-0*0
Dinitrogen dimer		-0.88	0.84	± 0.67	kJ/mol	56.02696 ± 0.00028	154680-01-0*0
Propadienylidene		554.47	555.61	± 0.39	kJ/mol	38.0480 ± 0.0024	60731-10-4*2
Tetrabromomethane			60.61	± 0.96	kJ/mol	331.6267 ± 0.0041	558-13-4*500
Bromomethane		-56.17	-59.19	± 0.20	kJ/mol	94.9385 ± 0.0013	74-83-9*590
Fluorine atom octacation		155686.5	155688.3	± 1.8	kJ/mol	18.99401456 ± 0.00000050	15721-58-1*0
Ammonia			-80.06	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*861
Hydrogen fluoride			-321.36	± 0.16	kJ/mol	20.006343 ± 0.000070	7664-39-3*1000
Peroxyhypochlorous acid anion		-2.8	-3.3	± 2.6	kJ/mol	68.4600 ± 0.0011	67952-08-31
Carbon pentacation		52824.592	52829.739	± 0.050	kJ/mol	12.00796 ± 0.00080	14280-11-6*0
Fluorine atom hexacation		45781.5	45783.3	± 1.8	kJ/mol	18.99511172 ± 0.00000050	14701-04-3*0
1,2-Propadien-1-ylium-1-yl-3-ylidene		1939.2	1947.1	± 1.3	kJ/mol	36.0316 ± 0.0024	118090-85-0*0
Fluorine atom		77.254	79.039	± 0.017	kJ/mol	18.99840320 ± 0.00000050	14762-94-8*1
Propylidene		349.52	335.76	± 0.92	kJ/mol	42.0797 ± 0.0024	6700-78-3*1
Hydroxylamine			-107.44	± 0.60	kJ/mol	33.02996 ± 0.00037	7803-49-8*500
Deuteride		146.991	148.904	± 0.0021	kJ/mol	2.01465035791 ± 0.00000000040	14452-69-8*0
Nitrosyl nitrate		60.4	52.5	± 1.9	kJ/mol	92.0111 ± 0.0012	15969-55-8*2
Methyl acetate		-394.13	-413.00	± 0.56	kJ/mol	74.0785 ± 0.0025	79-20-9*0
Ethyl bromide		-55.37	-90.90	± 0.25	kJ/mol	108.9651 ± 0.0019	74-96-4*500
Carbon hexacation		100101.747	100106.893	± 0.050	kJ/mol	12.00741 ± 0.00080	16249-02-8*0
Hydroxymethylene		112.70	108.94	± 0.27	kJ/mol	30.02598 ± 0.00087	19710-56-6*0
Hydrogen fluoride			-320.69	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*805
Chlorodioxidenium		1215.1	1212.9	± 6.3	kJ/mol	67.4510 ± 0.0011	64710-10-7*0
Chlorine trifluoride cation		1053.5	1049.2	± 2.3	kJ/mol	92.44736 ± 0.00090	478167-77-0*0
Difluorovinylidene cation		1181.5	1183.0	± 2.3	kJ/mol	62.0177 ± 0.0016	268566-71-8*0
Oxygen atom octacation		197447.75	197449.60	± 0.12	kJ/mol	15.99501 ± 0.00030	21450-98-6*0
1,2-Diiodoacetylene		416.0	416.8	± 2.5	kJ/mol	277.8303 ± 0.0016	624-74-8*0
Dioxofluorine anion		155.9	154.4	± 2.5	kJ/mol	50.99775 ± 0.00060	175861-93-50
2-Oxo-1-ethylium-1-yl		1292.1	1288.7	± 2.4	kJ/mol	42.0361 ± 0.0016	214464-96-7*12
sec-Butylium		792.8	769.2	± 1.5	kJ/mol	57.1137 ± 0.0033	16548-59-7*0
Chloro(chlorooxy)methylene		101.1	104.7	± 4.8	kJ/mol	98.9155 ± 0.0020	479587-31-0*12
Oxoethylidene anion		92.3	89.0	± 2.3	kJ/mol	42.0372 ± 0.0016	106543-38-8*2
1,3,5-Hexatriynylium		1952.6	1961.4	± 7.6	kJ/mol	73.0716 ± 0.0048	81932-75-4*2
Methyl formate		-346.82	-359.87	± 0.61	kJ/mol	60.0520 ± 0.0017	107-31-3*0
Fluorine atom tetracation		19594.3	19596.6	± 1.7	kJ/mol	18.99620888 ± 0.00000050	14700-79-9*0
Ethyl formate		-375.0	-393.7	± 1.0	kJ/mol	74.0785 ± 0.0025	109-94-4*0
Carbon suboxide		-131.18	-116.15	± 0.97	kJ/mol	68.0309 ± 0.0025	504-64-3*500
Nitride		1879.1	1881.0	± 4.4	kJ/mol	14.008386 ± 0.000070	18851-77-9*0
Water		-286.273	-292.713	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*510
Hypoiodite			-116.3	± 5.4	kJ/mol	142.90442 ± 0.00030	15065-65-3*800
Carbon monoxide		-113.799	-110.518	± 0.026	kJ/mol	28.01010 ± 0.00085	630-08-0*2
m-Benzyne		615.1	605.7	± 1.4	kJ/mol	76.0960 ± 0.0048	1828-89-3*1
Chlorine atom tetracation		12615.5	12617.1	± 4.6	kJ/mol	35.45051 ± 0.00090	22541-74-8*0
Methylene		391.076	391.622	± 0.094	kJ/mol	14.02658 ± 0.00081	2465-56-7*0
Fulvenallene		549.1	536.7	± 2.4	kJ/mol	90.1225 ± 0.0056	27041-32-3*1
Cycloheptatetraene		529.1	515.1	± 2.3	kJ/mol	90.1225 ± 0.0056	52783-93-4*1
4,5-Bis(methylene)-2-cyclopenten-1-yl		315.3	297.1	± 2.0	kJ/mol	91.1305 ± 0.0056	302792-28-5*0
2,5-Bis(methylene)-3-cyclopenten-1-yl		321.0	302.8	± 2.0	kJ/mol	91.1305 ± 0.0056	512782-58-0*0
Tetraoxodinitrate anion		-184.6	-187.8	± 2.4	kJ/mol	92.0116 ± 0.0012	63552-02-3*0
Dioxofluorine cation		1667.0	1664.8	± 2.8	kJ/mol	50.99665 ± 0.00060	223566-05-0*0
Hypochlorite			-110.484	± 0.076	kJ/mol	51.45265 ± 0.00095	14380-61-1*1000
Isocyanogen bromide anion		105.1	101.9	± 4.6	kJ/mol	105.9220 ± 0.0013	238754-53-50
1-Methylethenyl hydroperoxide		-54.9	-72.9	± 2.1	kJ/mol	74.0785 ± 0.0025	177944-34-2*21
Tropylide		261.7	245.4	± 2.0	kJ/mol	91.1310 ± 0.0056	34464-18-1*0
Isoindene cation		985.2	961.9	± 1.8	kJ/mol	116.1593 ± 0.0072	1442045-79-5*0
Indenylium		1081.2	1061.7	± 2.2	kJ/mol	115.1513 ± 0.0072	12203-21-3*1
Acetoxy		-182.02	-190.74	± 0.76	kJ/mol	59.0440 ± 0.0017	13799-69-4*0
Carbon trication		8770.930	8776.077	± 0.047	kJ/mol	12.00905 ± 0.00080	14067-06-2*0
Water trimer		-762.64	-776.75	± 0.20	kJ/mol	54.04584 ± 0.00099	31014-12-7*0
Fluorine atom heptacation		63649.3	63651.1	± 1.8	kJ/mol	18.99456314 ± 0.00000050	14700-77-7*0
Difluorodioxidanium		1287.3	1283.1	± 2.3	kJ/mol	69.99506 ± 0.00060	7783-44-02
Propionic acid		-435.77	-453.66	± 0.60	kJ/mol	74.0785 ± 0.0025	79-09-4*0
Hypoiodous acid			-146.9	± 4.9	kJ/mol	143.91181 ± 0.00031	14332-21-9*1000
Chlorine atom hexacation		28501.	28503.	± 11.	kJ/mol	35.44941 ± 0.00090	22541-73-7*0
1-Hydroxyethenylium		1025.4	1018.3	± 2.9	kJ/mol	43.0441 ± 0.0016	41084-89-3*11
2-Methyl-2-propanol			-358.9	± 1.9	kJ/mol	74.1216 ± 0.0033	75-65-0*590
Oxygen atom trication		10249.928	10252.880	± 0.018	kJ/mol	15.99775 ± 0.00030	14127-64-1*0
2-Propen-1-ylium-1-ylidene		1373.2	1369.7	± 2.0	kJ/mol	39.0554 ± 0.0024	88000-25-3*0
Fluorine atom trication		11182.872	11186.697	± 0.032	kJ/mol	18.99675746 ± 0.00000050	14700-88-0*0
Acetaldehyde		-186.89	-191.60	± 0.28	kJ/mol	44.0526 ± 0.0017	75-07-0*500
Glycinate			-470.09	± 0.21	kJ/mol	74.0592 ± 0.0017	23297-34-9*800
Dihydrogen anion		253.8	254.7	± 1.2	kJ/mol	2.01643 ± 0.00014	12184-89-3*0
Difluorine cation		1514.301	1514.475	± 0.013	kJ/mol	37.9962578 ± 0.0000010	12184-86-0*0
Bromodioxy		116.8	107.7	± 3.8	kJ/mol	111.9028 ± 0.0012	67177-47-3*0
Hydrogen bromide			-120.24	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*952
Succinic acid		-918.49	-940.21	± 0.12	kJ/mol	118.0880 ± 0.0034	110-15-6*500
Ethynylene		819.984	826.557	± 0.085	kJ/mol	24.0214 ± 0.0016	12070-15-4*2
Peroxyformate		-320.6	-326.5	± 1.7	kJ/mol	61.0174 ± 0.0012	104960-05-6*2
1,2-Dibromoethane			-80.1	± 1.2	kJ/mol	187.8612 ± 0.0026	106-93-4*500
Peroxyformyl		-90.4	-95.9	± 1.7	kJ/mol	61.0168 ± 0.0012	56240-83-6*2
1,3-Butadien-2-ol		-42.6	-59.1	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*21
1,3-Butadien-2-ol		-53.3	-68.6	± 1.5	kJ/mol	70.0898 ± 0.0032	59120-04-6*1
Hydroxyoxoammoniumyl		1014.8	1008.4	± 2.0	kJ/mol	47.01293 ± 0.00061	80371-48-8*2
Hydrogen peroxide cation		897.30	890.32	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*11
Acrolein		-55.11	-65.20	± 0.64	kJ/mol	56.0633 ± 0.0024	107-02-8*0
1-Oxo-2-propenide		83.6	78.7	± 2.5	kJ/mol	55.0559 ± 0.0024	78944-75-9*2
Propadien-1-olate		1.5	-4.4	± 2.5	kJ/mol	55.0559 ± 0.0024	109686-13-7*0
1-Formylethenylium		1158.8	1154.2	± 3.0	kJ/mol	55.0548 ± 0.0024	101705-89-9*1
3-Oxo-1-propenyl		190.97	184.99	± 0.91	kJ/mol	55.0553 ± 0.0024	206255-29-0*1
3-Oxo-1-propenyl		191.7	185.7	± 2.1	kJ/mol	55.0553 ± 0.0024	206255-29-0*21
Nitrous acid anion		-105.4	-109.4	± 1.8	kJ/mol	47.01403 ± 0.00061	256393-36-9*1
2-Formylethen-1-ide		30.5	23.8	± 3.1	kJ/mol	55.0559 ± 0.0024	135924-69-5*21
1,2-Propadien-1-one cation		1012.8	1011.4	± 1.8	kJ/mol	54.0468 ± 0.0024	87612-93-9*0
Hypochloroperoxoous acid, hydroxy ester		48.7	41.8	± 2.5	kJ/mol	84.4588 ± 0.0013	928652-99-7*2
2-Propynal cation		1168.4	1167.2	± 1.2	kJ/mol	54.0468 ± 0.0024	100815-70-1*0
Formylethynyl cation		1540.0	1541.9	± 2.7	kJ/mol	53.0389 ± 0.0024	85905-64-22
Formylethynyl cation		1540.7	1542.9	± 2.8	kJ/mol	53.0389 ± 0.0024	85905-64-21
Carbide		2709.5	2714.7	± 2.7	kJ/mol	12.01289 ± 0.00080	12385-15-8*0
Hydrogen peroxide cation		931.06	924.21	± 0.98	kJ/mol	34.01413 ± 0.00062	12325-10-9*22
Oxygen atom heptacation		113369.48	113371.34	± 0.12	kJ/mol	15.99556 ± 0.00030	14274-89-6*0
(Hydroxyimino)methyl		258.9	252.8	± 2.0	kJ/mol	44.03272 ± 0.00087	206442-92-4*2
2-Iminoethyl		221.7	210.4	± 1.8	kJ/mol	42.0599 ± 0.0016	73843-90-0*1
2-Iminoethyl anion		110.7	100.2	± 2.3	kJ/mol	42.0604 ± 0.0016	73843-87-5*2
Cyanoacetylene cation		1495.59	1497.89	± 0.57	kJ/mol	51.0462 ± 0.0024	85398-68-1*0
Isocyanoacetylene cation		1567.8	1570.4	± 1.3	kJ/mol	51.0462 ± 0.0024	145076-03-5*0
Cyanoethynylium		1867.6	1874.3	± 3.2	kJ/mol	50.0383 ± 0.0024	104233-69-4*0
Fluorosyl fluoride		227.	225.	± 21.	kJ/mol	53.99621 ± 0.00030	86825-57-2*2
2-Iminoethylium		1108.4	1097.7	± 2.9	kJ/mol	42.0594 ± 0.0016	73843-91-1*2
mu-Oxodichlorate anion		-147.8	-147.7	± 2.5	kJ/mol	86.9053 ± 0.0018	365546-30-1*0
1-Hydroperoxyethylium		690.7	675.8	± 1.5	kJ/mol	61.0594 ± 0.0017	126898-98-42
3-Imino-2-propen-1-ylidene		530.7	526.4	± 1.2	kJ/mol	53.0627 ± 0.0024	916765-05-4*1
(E)-2-Iminoethylium		1108.4	1094.9	± 2.9	kJ/mol	42.0594 ± 0.0016	91127-33-2*0
2-(Methylidyneamino)ethenyl		600.7	596.4	± 1.2	kJ/mol	53.0627 ± 0.0024	123416-74-0*1
(Z)-2-Iminoethylium		1151.8	1143.1	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-34-3*0
(Z)-2-Iminoethylium		1151.8	1143.1	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-34-3*11
Nitrogen atom tetracation		16781.74	16783.61	± 0.23	kJ/mol	14.004546 ± 0.000070	14452-70-1*0
Carbonic acid			-698.669	± 0.028	kJ/mol	62.0248 ± 0.0012	463-79-6*1000
Tetraoxygen		69.8	65.1	± 4.4	kJ/mol	63.9976 ± 0.0012	12596-83-7*21
Tetraoxygen		399.0	393.4	± 3.9	kJ/mol	63.9976 ± 0.0012	12596-83-7*23
Tetraoxygen		465.6	459.6	± 4.2	kJ/mol	63.9976 ± 0.0012	12596-83-7*24
2-Hydroperoxyethyl		65.2	51.4	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*11
Dimethyl carbonate		-550.03	-570.45	± 0.37	kJ/mol	90.0779 ± 0.0026	616-38-6*0
1,2-Butadien-1-ylium-1-yl		1467.0	1461.8	± 3.1	kJ/mol	52.0740 ± 0.0032	161054-21-3*0
Bicyclo[1.1.0]butan-3-id-1-yl		524.7	516.0	± 2.6	kJ/mol	52.0751 ± 0.0032	131273-95-5*0
1,2-Cyclobutadiene		586.0	579.4	± 2.2	kJ/mol	52.0746 ± 0.0032	50682-90-1*0
Trioxodinitrate anion		-87.3	-93.1	± 2.2	kJ/mol	76.01223 ± 0.00091	194856-62-7*1
Nitrogen atom pentacation		26226.70	26228.56	± 0.23	kJ/mol	14.003997 ± 0.000070	20508-99-0*0
Hydrazine monohydrate			-242.58	± 0.19	kJ/mol	50.06052 ± 0.00053	7803-57-8*500
Formylimidogen		245.3	242.1	± 3.3	kJ/mol	43.02478 ± 0.00086	42288-92-6*2
But-3-en-1-yn-1-ide		559.2	558.5	± 2.2	kJ/mol	51.0672 ± 0.0032	58870-47-6*1
Chlorine atom pentacation		19147.	19149.	± 11.	kJ/mol	35.44996 ± 0.00090	20337-89-7*0
Ammonia			-80.50	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*844
Trioxirane cation		1444.4	1442.2	± 2.2	kJ/mol	47.99765 ± 0.00090	153851-84-40
Nitrogen atom anion		488.2	490.5	± 2.3	kJ/mol	14.007289 ± 0.000070	17778-87-9*0
Trioxygen difluoride		112.5	107.3	± 1.1	kJ/mol	85.99501 ± 0.00090	16829-28-0*0
Chlorine atom		119.621	121.228	± 0.0011	kJ/mol	35.45270 ± 0.00090	22537-15-1*1
Silicon atom dication		2814.00	2816.98	± 0.56	kJ/mol	28.08440 ± 0.00030	14175-55-4*0
Silicon atom trication		6045.58	6048.56	± 0.56	kJ/mol	28.08385 ± 0.00030	14175-56-5*0
Methyl hydrocarbonate		-576.99	-591.80	± 0.87	kJ/mol	76.0514 ± 0.0019	7456-87-3*0
Oxygen atom tetracation		17719.207	17721.064	± 0.025	kJ/mol	15.99721 ± 0.00030	14127-65-2*0
Formic acid			-425.34	± 0.45	kJ/mol	46.0254 ± 0.0010	64-18-6*1000
Dioxosilane		-901.5	-906.3	± 1.4	kJ/mol	60.08430 ± 0.00067	7631-86-9*515
2-Aminoethenylium		1117.9	1106.8	± 2.4	kJ/mol	42.0594 ± 0.0016	64724-21-6*11
Oxosilyliumyl		1022.0	1023.1	± 2.9	kJ/mol	44.08435 ± 0.00042	12359-18-1*0
1-Methylethenylium		995.2	986.0	± 1.9	kJ/mol	41.0713 ± 0.0024	50457-57-3*0
Acetylene anion		356.9	356.7	± 1.9	kJ/mol	26.0378 ± 0.0016	50443-89-5*0
2-Aminoethenyl anion		242.0	231.3	± 2.6	kJ/mol	42.0604 ± 0.0016	64724-21-61
Cyclopentadiene			110.39	± 0.56	kJ/mol	66.1011 ± 0.0040	542-92-7*590
1-Methylethenyl anion		199.4	188.2	± 2.0	kJ/mol	41.0723 ± 0.0024	65887-19-6*0
Nitrogen atom hexacation		79493.10	79494.96	± 0.23	kJ/mol	14.003449 ± 0.000070	15721-56-9*0
mu-Hydrotetrahydrodisilicon cation		981.6	968.8	± 2.8	kJ/mol	61.21015 ± 0.00069	160896-65-1*0
Di-mu-hydrotrihydrodisilicon cation		1033.7	1020.3	± 2.8	kJ/mol	61.21015 ± 0.00069	160896-65-10
Chlorine atom trication		7487.2	7490.2	± 3.3	kJ/mol	35.45105 ± 0.00090	16547-50-5*0
Disilene anion		178.6	170.2	± 3.0	kJ/mol	60.20331 ± 0.00066	157379-08-3*0
Silylsilylene anion		160.3	151.6	± 3.0	kJ/mol	60.20331 ± 0.00066	286949-98-2*0
Silylsilylene		381.3	372.5	± 2.6	kJ/mol	60.20276 ± 0.00066	50420-90-1*1
mu-Hydrotrihydrodisilicon		317.9	307.8	± 2.1	kJ/mol	60.20276 ± 0.00066	497967-56-3*0
Hydrogen iodide			-56.642	± 0.089	kJ/mol	127.912410 ± 0.000076	10034-85-2*958
mu-Hydrotrihydrodisilicon cation		1160.1	1152.0	± 2.6	kJ/mol	60.20221 ± 0.00066	497967-55-20
Hydrogen fluoride			-322.01	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*828
Tribromine cation		1036.3	1013.6	± 2.5	kJ/mol	239.7115 ± 0.0030	33105-86-1*0
Silyloxoniumylidene		1096.3	1089.9	± 2.9	kJ/mol	47.10817 ± 0.00047	152720-17-7*1
Tribromide			-129.17	± 0.22	kJ/mol	239.7125 ± 0.0030	14522-80-6*800
Hydroxysilylium		600.3	591.6	± 2.9	kJ/mol	47.10817 ± 0.00047	66639-72-3*0
Ammonium oxide		-428.46	-430.46	± 0.61	kJ/mol	52.07640 ± 0.00065	12161-77-2*500
1-Propen-1-yl-3-ylidene		656.8	653.4	± 1.1	kJ/mol	39.0559 ± 0.0024	84654-90-0*1
Nitrosyl nitrite anion		-100.3	-103.4	± 2.9	kJ/mol	76.01223 ± 0.00091	122413-35-82
1,5-Hexadiyne			386.0	± 1.9	kJ/mol	78.1118 ± 0.0048	628-16-0*500
Ammonia			-77.033	± 0.056	kJ/mol	17.03056 ± 0.00022	7664-41-7*800
Ammonia			-75.73	± 0.57	kJ/mol	17.03056 ± 0.00022	7664-41-7*801
Bicyclo[3.1.0]hexa-1,3-diene		406.5	390.9	± 2.2	kJ/mol	78.1118 ± 0.0048	28425-23-2*0
3-Ethenylidenecyclobutene		406.6	392.5	± 2.3	kJ/mol	78.1118 ± 0.0048	813466-23-8*0
3,4-Hexadien-1-yne		418.7	407.5	± 2.6	kJ/mol	78.1118 ± 0.0048	194024-51-6*0
3-Ethynylcyclobutene		421.8	407.4	± 2.4	kJ/mol	78.1118 ± 0.0048	175090-90-1*0
Ammonia			-78.02	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*803
Ammonia			-78.87	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*805
1,2,4-Trioxolane		-204.6	-222.8	± 2.1	kJ/mol	76.0514 ± 0.0019	289-14-5*0
Hydrogen peroxide		-129.418	-135.404	± 0.058	kJ/mol	34.01468 ± 0.00062	7722-84-1*2
Hydrazoic acid anion		316.3	310.1	± 2.3	kJ/mol	43.02871 ± 0.00022	203264-98-6*2
Isocyanogen cation		1654.2	1656.5	± 1.4	kJ/mol	52.0343 ± 0.0016	133415-63-1*0
2-Ethynyl-2-cyclopropen-1-ylidene		726.2	727.4	± 3.2	kJ/mol	62.0694 ± 0.0040	117992-84-4*0
Oxygen atom pentacation		28708.788	28710.645	± 0.053	kJ/mol	15.99666 ± 0.00030	14127-66-3*0
Pyramidane		602.4	593.9	± 2.3	kJ/mol	64.0853 ± 0.0040	66202-79-7*0
Spiropentadiene		651.9	644.6	± 2.3	kJ/mol	64.0853 ± 0.0040	1727-65-7*0
Oxoniumyl ion		978.496	975.592	± 0.024	kJ/mol	18.01473 ± 0.00033	56583-62-1*1
Diisocyanogen cation		1838.6	1842.6	± 3.1	kJ/mol	52.0343 ± 0.0016	78800-21-22
2-Aminoethylium		1042.7	1026.1	± 2.4	kJ/mol	44.0752 ± 0.0017	54088-54-9*1
2-Aminoethyl anion		149.0	131.9	± 2.1	kJ/mol	44.0763 ± 0.0017	71857-14-2*0
Ammonia			-79.33	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*807
Ammonia			-79.63	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*809
Hydrazoic acid			257.71	± 0.48	kJ/mol	43.02816 ± 0.00022	7782-79-8*1000
1,2-Diphenylethane		180.72	142.23	± 0.76	kJ/mol	182.2610 ± 0.0112	103-29-7*0
Hydrazoic acid			272.69	± 0.47	kJ/mol	43.02816 ± 0.00022	7782-79-8*800
2-Naphthalenylium		1195.7	1177.8	± 3.5	kJ/mol	127.1620 ± 0.0080	79319-69-0*0
1-Naphthalenylium		1192.8	1174.8	± 3.4	kJ/mol	127.1620 ± 0.0080	79319-68-9*0
Ammonia			-80.16	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*815
Ammonia			-80.38	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*818
Ammonia			-80.52	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*822
Biphenyl			113.7	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*590
2-Methylpentane		-180.15	-203.81	± 0.73	kJ/mol	86.1754 ± 0.0049	107-83-5*500
Benzophenone		-16.7	-41.9	± 1.5	kJ/mol	182.2179 ± 0.0104	119-61-9*510
Buckminsterfullerene		2523.5	2518.9	± 6.4	kJ/mol	720.6420 ± 0.0480	99685-96-8*0
Buckminsterfullerene		2328.4	2337.9	± 6.4	kJ/mol	720.6420 ± 0.0480	99685-96-8*500
Cyclobutatrienyl		962.0	965.5	± 2.4	kJ/mol	49.0507 ± 0.0032	99417-52-40
3-Methylpentane		-177.60	-201.87	± 0.76	kJ/mol	86.1754 ± 0.0049	96-14-0*500
Helium anion		1904.822	1904.822	± 0.000	kJ/mol	4.0031506 ± 0.0000020	14452-58-5*3
Helium anion		5724.96	5724.96	± 0.32	kJ/mol	4.0031506 ± 0.0000020	14452-58-5*4
Dihelium cation		2143.643	2139.915	± 0.018	kJ/mol	8.0046554 ± 0.0000040	12184-99-5*0
Dihelium anion		1714.9	1711.2	± 1.9	kJ/mol	8.0057526 ± 0.0000040	90188-47-9*1
Deuterium molecule cation		1492.286	1492.361	± 0.000	kJ/mol	4.02765497609 ± 0.00000000080	12184-84-8*0
Helium dihydride		-0.05	0.87	± 0.42	kJ/mol	6.01848 ± 0.00014	33309-42-1*0
Nitrogen atom trication		9306.69	9308.55	± 0.23	kJ/mol	14.005094 ± 0.000070	18396-22-0*0
Helium dihydride		614.5	608.9	± 2.6	kJ/mol	6.01848 ± 0.00014	33309-42-10
Dihydrohelium cation		1572.2	1568.9	± 2.4	kJ/mol	6.01793 ± 0.00014	12500-88-80
Neon dication		6032.988	6033.214	± 0.0041	kJ/mol	20.17860 ± 0.00060	14041-55-5*0
Neon trication		12152.403	12152.403	± 0.032	kJ/mol	20.17805 ± 0.00060	14158-25-9*0
Neon tetracation		21529.82	21531.45	± 0.25	kJ/mol	20.17751 ± 0.00060	14041-56-6*0
Neon pentacation		33711.1	33711.1	± 1.2	kJ/mol	20.17696 ± 0.00060	14175-48-5*0
Neon hexacation		48949.3	48949.3	± 1.3	kJ/mol	20.17641 ± 0.00060	14041-57-7*0
Neon heptacation		68948.7	68948.7	± 1.4	kJ/mol	20.17586 ± 0.00060	14175-50-9*0
Neon octacation		92018.2	92018.2	± 1.4	kJ/mol	20.17531 ± 0.00060	14782-26-4*0
Neon nonacation		207396.1	207396.1	± 1.4	kJ/mol	20.17476 ± 0.00060	15721-59-2*0
2,3-Dimethylbutane		-182.40	-206.91	± 0.81	kJ/mol	86.1754 ± 0.0049	79-29-8*500
2,2-Dimethylbutane		-187.90	-213.62	± 0.75	kJ/mol	86.1754 ± 0.0049	75-83-2*500
Sulfur atom dication		3528.19	3531.88	± 0.14	kJ/mol	32.0649 ± 0.0060	14127-58-3*0
Sulfur atom trication		6890.8	6892.8	± 3.2	kJ/mol	32.0644 ± 0.0060	22541-72-6*0
Sulfur atom tetracation		11447.1	11448.8	± 3.4	kJ/mol	32.0638 ± 0.0060	20681-10-1*0
Sulfur atom pentacation		18451.4	18453.2	± 3.4	kJ/mol	32.0633 ± 0.0060	14127-59-4*0
Fluorine atom dication		5132.472	5134.257	± 0.021	kJ/mol	18.99730604 ± 0.00000050	14701-07-6*0
Dioxathiirane		166.2	163.7	± 2.2	kJ/mol	64.0648 ± 0.0060	191663-73-7*0
Ammonia			-80.57	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*839
1-Propenylium		1233.8	1223.4	± 2.0	kJ/mol	41.0713 ± 0.0024	50457-58-4*1
Ammonia			-80.56	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*828
Sulfur trioxide			-454.31	± 0.37	kJ/mol	80.0642 ± 0.0061	7446-11-9*500
3-Oxidedioxathiirane		-127.9	-132.8	± 2.2	kJ/mol	80.0642 ± 0.0061	2243010-16-2*0
Trioxathietane		263.6	258.5	± 2.3	kJ/mol	80.0642 ± 0.0061	2243010-16-20
Oxadithiirane		136.4	134.3	± 2.5	kJ/mol	80.1314 ± 0.0120	488092-02-0*0
Sulfanylideneoxidaniumthiolate		220.7	219.0	± 2.0	kJ/mol	80.1314 ± 0.0120	401811-43-6*0
Thiozone cation		1073.1	1071.5	± 2.0	kJ/mol	96.1975 ± 0.0180	60063-56-1*0
cyc-Thiozone cation		1040.2	1039.6	± 2.7	kJ/mol	96.1975 ± 0.0180	60063-56-10
cyc-Trisulfide		15.2	14.6	± 2.5	kJ/mol	96.1985 ± 0.0180	12597-04-50
mu-Oxodichlorine cation		1130.45	1126.84	± 0.63	kJ/mol	86.9043 ± 0.0018	51174-96-0*0
Trihydrogen		215.9	218.3	± 1.1	kJ/mol	3.02382 ± 0.00021	12184-91-7*100
Cyanoamidogen		657.4	654.6	± 2.0	kJ/mol	41.03212 ± 0.00082	12347-01-2*22
Sulfuric acid		-878.92	-909.16	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*800
Ethylideneoxoniumyloxy		957.2	944.8	± 2.2	kJ/mol	60.0514 ± 0.0017	1427752-17-7*2
Sulfuric acid			-886.35	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*821
Nitrogen atom dication		4728.997	4731.825	± 0.024	kJ/mol	14.005643 ± 0.000070	17439-59-7*0
Sulfuric acid			-891.24	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*835
Sulfuric acid			-891.61	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*837
Sulfuric acid			-893.41	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*840
Sulfuric acid			-894.36	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*841
Sulfuric acid			-895.83	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*842
Sulfuric acid			-897.86	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*844
2-Chloro ozone		265.7	265.1	± 3.7	kJ/mol	83.4509 ± 0.0013	141801-66-30
Sulfuric acid			-886.90	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*823
Sulfuric acid			-887.25	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*826
Sulfuric acid			-887.40	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*827
Sulfuric acid			-891.43	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*836
Sulfuric acid			-892.87	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*954
Sulfuric acid			-898.58	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*845
Sulfuric acid			-899.50	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*847
Sulfuric acid			-899.76	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*848
Sulfuric acid			-900.22	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*849
Sulfuric acid monohydrate		-1126.32	-1127.48	± 0.13	kJ/mol	116.0948 ± 0.0062	10193-30-3*500
Sulfuric acid dihydrate		-1422.14	-1426.93	± 0.14	kJ/mol	134.1100 ± 0.0063	13451-10-0*500
Sulfuric acid trihydrate		-1716.08	-1720.20	± 0.15	kJ/mol	152.1253 ± 0.0064	40835-65-2*500
Sulfuric acid tetrahydrate		-2006.93	-2010.97	± 0.17	kJ/mol	170.1406 ± 0.0065	37006-20-5*500
Sulfuric acid pentahydrate			-2300.36	± 0.18	kJ/mol	188.1559 ± 0.0066	137168-49-1*500
Sulfuric acid hexahydrate			-2588.91	± 0.20	kJ/mol	206.1712 ± 0.0068	137168-50-4*500
Sulfuric acid heptahydrate			-2876.86	± 0.22	kJ/mol	224.1864 ± 0.0069	137168-51-5*500
Sulfuric acid octahydrate			-3164.36	± 0.24	kJ/mol	242.2017 ± 0.0071	88434-16-6*500
Sulfuric acid nonahydrate			-3451.52	± 0.25	kJ/mol	260.2170 ± 0.0073	137168-52-6*500
Sulfuric acid decahydrate			-3738.42	± 0.27	kJ/mol	278.2323 ± 0.0075	137168-53-7*500
Sulfuric acid dodecahydrate			-4311.63	± 0.31	kJ/mol	314.2628 ± 0.0079	30383-99-4*500
Sulfuric acid pentadecahydrate			-5170.52	± 0.37	kJ/mol	368.3087 ± 0.0086	425605-43-2*500
Cyclopropane cation		1021.8	1006.3	± 1.5	kJ/mol	42.0792 ± 0.0024	34496-93-0*0
1-Propenylide		210.5	199.3	± 2.0	kJ/mol	41.0723 ± 0.0024	65887-20-9*1
Water		-238.903	-241.806	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*2
Sulfur tetraoxide		-205.2	-211.3	± 2.6	kJ/mol	96.0636 ± 0.0061	12772-98-4*12
Hydroxylamine		-33.06	-43.43	± 0.42	kJ/mol	33.02996 ± 0.00037	7803-49-8*0
Dioxoperoxysulfane		-177.1	-177.5	± 3.5	kJ/mol	96.0636 ± 0.0061	103613-08-712
Oxonium		605.89	599.14	± 0.17	kJ/mol	19.02267 ± 0.00037	13968-08-6*2
Vinyl hydroperoxide		-21.6	-33.5	± 1.6	kJ/mol	60.0520 ± 0.0017	66998-78-5*2
Thioformaldehyde cation		1025.9	1022.4	± 2.0	kJ/mol	46.0920 ± 0.0061	61356-81-8*0
Diazomethylium		1458.9	1456.9	± 2.2	kJ/mol	41.03157 ± 0.00082	271249-81-1*2
Dimethylsulfoxide			-203.58	± 0.49	kJ/mol	78.1344 ± 0.0062	67-68-5*590
Vinyl hydroperoxide		-21.4	-33.1	± 1.6	kJ/mol	60.0520 ± 0.0017	66998-78-5*3
Trihydrogen cation		1110.304	1106.697	± 0.013	kJ/mol	3.02327 ± 0.00021	28132-48-1*2
Ammonia			-80.22	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*855
Ammonia			-80.58	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*833
Ammonium hydroxide			-366.685	± 0.059	kJ/mol	35.04584 ± 0.00047	1336-21-6*1000
Cycloheptatetraene		418.8	403.1	± 1.3	kJ/mol	90.1225 ± 0.0056	52783-93-4*0
Hydroperoxonium		738.2	727.9	± 1.2	kJ/mol	35.02207 ± 0.00064	70850-26-9*0
Acetic acid			-484.76	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*832
Hydrogen bromide			-120.10	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*839
Trichlorine cation		1196.6	1197.2	± 3.2	kJ/mol	106.3576 ± 0.0027	33088-85-6*1
2-Hydroxyethyl		-12.87	-26.13	± 0.48	kJ/mol	45.0605 ± 0.0017	4422-54-2*0
Tetrafluorohydrazine cation		1146.9	1141.5	± 3.7	kJ/mol	104.00654 ± 0.00014	37366-75-9*2
Acetic acid			-484.78	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*833
C=O-C cation		1585.8	1592.9	± 2.7	kJ/mol	40.0203 ± 0.0016	83483-98-1*0
Chlorine chlorite		168.6	166.4	± 1.3	kJ/mol	102.9042 ± 0.0019	105206-44-8*0
2-Propene-1,2-diol		-295.3	-314.4	± 1.2	kJ/mol	74.0785 ± 0.0025	44169-27-9*0
Isocyanogen bromide cation		1470.0	1464.3	± 5.9	kJ/mol	105.9209 ± 0.0013	238754-53-5*0
Cyclopentadienide		101.19	88.21	± 0.96	kJ/mol	65.0937 ± 0.0040	12127-83-2*0
Nitric acid			-205.90	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*818
Dichloromethylene		229.88	231.06	± 0.64	kJ/mol	82.9161 ± 0.0020	1605-72-7*0
Hydrogen iodide			-56.042	± 0.097	kJ/mol	127.912410 ± 0.000076	10034-85-2*828
1-Methylethenyl hydroperoxide		-63.4	-81.2	± 1.3	kJ/mol	74.0785 ± 0.0025	177944-34-2*0
trans-Cycloheptene		142.0	103.9	± 1.9	kJ/mol	96.1702 ± 0.0057	45509-99-7*0
Propylidene		349.7	336.0	± 2.0	kJ/mol	42.0797 ± 0.0024	6700-78-3*12
Ethoxyethene		-108.7	-131.9	± 2.3	kJ/mol	72.1057 ± 0.0033	109-92-2*11
Acetic acid			-484.78	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*895
Acetic acid			-484.78	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*834
Chlorous acid cation		996.6	991.6	± 3.1	kJ/mol	68.4589 ± 0.0011	99559-66-70
1,3-Propanediyl		319.3	307.9	± 1.3	kJ/mol	42.0797 ± 0.0024	32458-33-6*0
Hydrogen chloride			-166.709	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*896
1-Methylethenyl hydroperoxide		-54.0	-72.1	± 2.7	kJ/mol	74.0785 ± 0.0025	177944-34-2*22
Hydrogen chloride			-166.739	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*842
Hydrogen fluoride			-323.83	± 0.12	kJ/mol	20.006343 ± 0.000070	7664-39-3*842
Water		-238.618	-241.806	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*1
Oxoniumyl ion		978.745	975.594	± 0.024	kJ/mol	18.01473 ± 0.00033	56583-62-1*2
Carbonylmethyloxonium		561.2	552.9	± 3.0	kJ/mol	59.0435 ± 0.0017	24434-00-2*0
Nitrosyl nitrate		48.3	40.4	± 1.8	kJ/mol	92.0111 ± 0.0012	15969-55-8*0
Isoformyl anion		55.7	58.4	± 1.8	kJ/mol	29.01859 ± 0.00086	81747-63-9*0
Indane cation		909.4	879.5	± 1.7	kJ/mol	118.1752 ± 0.0072	78854-02-1*0
Dihydroxymethyl		-196.9	-205.2	± 1.1	kJ/mol	47.0333 ± 0.0010	14840-85-8*0
Dihydroxymethyl		-190.6	-199.3	± 2.2	kJ/mol	47.0333 ± 0.0010	14840-85-8*2
Dihydroxymethyl		-187.9	-196.7	± 2.0	kJ/mol	47.0333 ± 0.0010	14840-85-8*3
Indene anion		242.7	220.3	± 3.4	kJ/mol	116.1604 ± 0.0072	39526-38-0*0
Hydrogen chloride			-166.103	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*830
Hydrogen iodide			-54.02	± 0.17	kJ/mol	127.912410 ± 0.000076	10034-85-2*816
Ammonium hydroxide			-365.54	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*808
Isoindene anion		239.8	217.2	± 3.9	kJ/mol	116.1604 ± 0.0072	496764-61-5*0
Hydrogen chloride			-164.170	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*819
Methoxyoxomethyl		-152.8	-160.5	± 1.1	kJ/mol	59.0440 ± 0.0017	16481-04-2*0
Oxirane		-77.12	-77.78	± 0.60	kJ/mol	44.0526 ± 0.0017	75-21-8*500
Indenide		125.3	105.3	± 1.6	kJ/mol	115.1524 ± 0.0072	12128-54-0*0
Indenylium		1030.2	1010.7	± 2.0	kJ/mol	115.1513 ± 0.0072	12203-21-3*0
Phenol cation		746.51	727.71	± 0.63	kJ/mol	94.1107 ± 0.0048	40932-22-7*0
Phenol anion		23.1	8.2	± 4.9	kJ/mol	94.1118 ± 0.0048	38752-11-3*0
Methoxyoxomethyl		-151.9	-160.0	± 2.1	kJ/mol	59.0440 ± 0.0017	16481-04-2*3
Hydrogen chloride			-166.753	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*899
Dihydroxymethylium		421.5	410.4	± 3.0	kJ/mol	47.0328 ± 0.0010	180071-68-5*0
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*830
Chlorine trifluoride anion		-480.4	-481.9	± 3.5	kJ/mol	92.44846 ± 0.00090	184289-50-7*0
Hydrogen chloride			-166.764	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*843
Benzaldehyde cation		897.0	880.3	± 1.7	kJ/mol	106.1214 ± 0.0056	80226-59-1*0
Benzaldehyde anion		-55.0	-72.7	± 2.7	kJ/mol	106.1225 ± 0.0056	34473-57-9*0
Acetyloxoniumylidene		892.4	884.0	± 2.9	kJ/mol	59.0435 ± 0.0017	67057-47-0*1
Hydrogen fluoride			-321.96	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*891
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*831
Benzoyl anion		70.3	57.6	± 4.0	kJ/mol	105.1145 ± 0.0056	78944-74-8*0
Ammonium hydroxide			-366.39	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*832
Hydrogen bromide			-110.68	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*809
1-Hydroxyethylidene		57.45	47.14	± 0.77	kJ/mol	44.0526 ± 0.0017	30967-49-8*2
Ethane anion		41.8	26.5	± 4.4	kJ/mol	30.0696 ± 0.0017	54064-82-3*0
Hydrogen chloride			-166.794	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*844
Acetic acid			-484.79	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*835
1-Hydroxyethylidene		57.45	47.14	± 0.77	kJ/mol	44.0526 ± 0.0017	30967-49-8*0
Dihydroxymethylium		428.5	417.3	± 3.4	kJ/mol	47.0328 ± 0.0010	180071-68-5*3
Trioxidane		-81.75	-90.35	± 0.40	kJ/mol	50.01408 ± 0.00091	14699-99-1*0
Propylidene		355.7	340.8	± 2.0	kJ/mol	42.0797 ± 0.0024	6700-78-3*2
Chlorous acid anion		-154.3	-156.1	± 3.3	kJ/mol	68.4600 ± 0.0011	99559-66-7*0
m-Tolualdehyde			-125.0	± 1.2	kJ/mol	120.1485 ± 0.0064	620-23-5*500
Hydrogen iodide			-56.389	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*834
Acetate			-485.09	± 0.27	kJ/mol	59.0446 ± 0.0017	71-50-1*800
2-Methanidylidynehydrazin-2-ium-1-ide		518.6	516.3	± 1.6	kJ/mol	41.03267 ± 0.00082	947408-74-41
Hydrogen bromide			-120.17	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*840
Cyanogen iodide cation		1271.3	1271.2	± 1.7	kJ/mol	152.92136 ± 0.00080	34749-78-5*0
Ammonium hydroxide			-365.63	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*809
Nitric acid			-205.98	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*819
(Formyloxy)methyl		-151.3	-159.3	± 1.1	kJ/mol	59.0440 ± 0.0017	3122-12-1*0
Carboxymethyl		-226.5	-236.3	± 1.1	kJ/mol	59.0440 ± 0.0017	2887-46-9*0
Dihydroxymethylium		439.4	428.2	± 3.4	kJ/mol	47.0328 ± 0.0010	180071-68-5*2
Dihydroxymethanide		-194.2	-202.4	± 1.8	kJ/mol	47.0339 ± 0.0010	61192-32-3*0
Hexafluorobenzene cation		13.69	9.91	± 0.87	kJ/mol	186.0541 ± 0.0048	34528-23-9*0
Hydrogen iodide			-55.08	± 0.12	kJ/mol	127.912410 ± 0.000076	10034-85-2*818
Hydrogen bromide			-120.20	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*841
Formaldehyde		-105.254	-109.220	± 0.094	kJ/mol	30.02598 ± 0.00087	50-00-0*22
Dihydroxymethanide		-192.0	-201.3	± 2.4	kJ/mol	47.0339 ± 0.0010	61192-32-3*1
Dihydroxymethanide		-177.6	-187.5	± 2.4	kJ/mol	47.0339 ± 0.0010	61192-32-3*3
1,2-Butadiene		137.82	138.88	± 0.63	kJ/mol	54.0904 ± 0.0032	590-19-2*500
2-Methoxy-2-oxoethyl		-202.9	-218.1	± 1.5	kJ/mol	73.0706 ± 0.0025	54668-31-4*0
1-Hydroxyethenylium		841.7	834.9	± 1.4	kJ/mol	43.0441 ± 0.0016	41084-89-3*0
Methylaminyliumyl		1388.2	1381.9	± 2.2	kJ/mol	29.04071 ± 0.00083	56924-51-7*0
Hypochlorous acid			-110.484	± 0.076	kJ/mol	52.46004 ± 0.00095	7790-92-3*800
(Acetyloxy)methyl		-200.1	-213.8	± 1.5	kJ/mol	73.0706 ± 0.0025	2887-49-2*0
Hydrogen chloride			-166.254	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*831
Hydroperoxonium		762.6	752.7	± 2.0	kJ/mol	35.02207 ± 0.00064	70850-26-9*2
(E)-Difluorodiazene cation	$F\N=N\[F+]$	1307.4	1302.3	± 3.7	kJ/mol	66.00974 ± 0.00014	13776-62-01
Dioxymethylene		341.8	339.8	± 3.0	kJ/mol	45.0174 ± 0.0010	438586-67-5*0
Hydrogen iodide			-56.410	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*835
Acetic acid			-484.79	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*837
Hydrogen bromide			-118.58	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*820
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*895
Acetic acid			-484.79	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*838
Tetroxidane		-33.32	-43.26	± 0.44	kJ/mol	66.0135 ± 0.0012	29683-94-1*0
Aminomethylidyne anion		481.6	478.1	± 3.2	kJ/mol	28.03387 ± 0.00082	96808-04-7*1
Hydrogen iodide			-56.431	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*837
Furaniumyl		836.0	823.2	± 1.3	kJ/mol	68.0734 ± 0.0032	66429-00-3*0
Furan anion		132.1	120.8	± 3.9	kJ/mol	68.0745 ± 0.0032	40807-44-1*0
2-Methyl-2-propanol		-341.1	-365.5	± 1.9	kJ/mol	74.1216 ± 0.0033	75-65-0*500
Fluorosyl fluoride cation		1413.1	1413.4	± 3.5	kJ/mol	53.99566 ± 0.00030	86825-50-50
Pyridiniumyl		1051.32	1035.37	± 0.61	kJ/mol	79.0994 ± 0.0040	16399-94-3*0
Pyridine anion		214.4	200.9	± 3.2	kJ/mol	79.1005 ± 0.0040	12169-63-0*0
Chloromethylene		320.36	320.65	± 0.89	kJ/mol	48.4713 ± 0.0012	2108-20-5*0
Hydrogen iodide			-56.071	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*892
Hydroxymethoxy		-149.9	-159.8	± 1.8	kJ/mol	47.0333 ± 0.0010	72144-78-6*1
Hydroxymethoxy cation		925.0	915.2	± 3.2	kJ/mol	47.0328 ± 0.0010	180071-69-6*1
Acetone enol		-151.24	-168.05	± 0.68	kJ/mol	58.0791 ± 0.0025	29456-04-0*0
Acetone enol		-145.2	-162.5	± 1.9	kJ/mol	58.0791 ± 0.0025	29456-04-0*2
Peroxyformic acid		-279.20	-288.33	± 0.63	kJ/mol	62.0248 ± 0.0012	107-32-4*0
Tetroxidane		-30.96	-41.42	± 0.64	kJ/mol	66.0135 ± 0.0012	29683-94-1*23
Hydrogen bromide			-120.23	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*898
2-Hydroxyprop-1-en-1-yl		101.65	90.29	± 0.86	kJ/mol	57.0712 ± 0.0024	1976041-84-5*0
2-Hydroxyprop-1-en-1-yl		106.6	94.6	± 1.9	kJ/mol	57.0712 ± 0.0024	1976041-84-5*12
2-Hydroxyprop-1-en-1-yl		114.0	102.9	± 1.9	kJ/mol	57.0712 ± 0.0024	1976041-84-5*21
2-Hydroxyprop-1-en-1-yl		115.1	104.3	± 1.9	kJ/mol	57.0712 ± 0.0024	1976041-84-5*22
Hydroxymethoxy cation		930.9	921.4	± 3.7	kJ/mol	47.0328 ± 0.0010	180071-69-6*12
Hydrogen iodide			-56.448	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*838
Hydroxymethoxy cation		933.5	923.8	± 3.7	kJ/mol	47.0328 ± 0.0010	180071-69-6*11
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*834
Ethylene anion		232.1	225.6	± 2.0	kJ/mol	28.0537 ± 0.0016	34527-91-8*0
Hydroxymethoxy anion		-373.82	-383.76	± 0.85	kJ/mol	47.0339 ± 0.0010	67899-36-9*0
Nitric acid			-206.00	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*820
1-Oxopropyl		-19.1	-30.6	± 1.1	kJ/mol	57.0712 ± 0.0024	15843-24-0*0
Hydrogen peroxide cation		931.09	924.21	± 0.98	kJ/mol	34.01413 ± 0.00062	12325-10-9*21
1-Hydroxyethenylium		1045.7	1038.7	± 3.4	kJ/mol	43.0441 ± 0.0016	41084-89-3*12
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*835
Hydroxymethoxy anion		-349.1	-358.7	± 1.9	kJ/mol	47.0339 ± 0.0010	67899-36-9*1
1-Hydroxyethenyl anion		15.1	8.6	± 2.1	kJ/mol	43.0452 ± 0.0016	112539-13-6*0
Methyl nitrite		-51.2	-63.2	± 1.1	kJ/mol	61.0401 ± 0.0010	624-91-9*1
Methyl nitrite			-87.57	± 0.76	kJ/mol	61.0401 ± 0.0010	624-91-9*500
Hypoiodous acid cation		891.4	886.6	± 3.3	kJ/mol	143.91126 ± 0.00031	193098-20-3*0
Hydrogen fluoride			-321.85	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*888
Ethyl nitrite		-78.9	-97.1	± 1.9	kJ/mol	75.0666 ± 0.0017	109-95-5*2
Ethyl nitrite		-76.8	-95.7	± 1.9	kJ/mol	75.0666 ± 0.0017	109-95-5*3
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*836
Hydrogen bromide			-119.66	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*829
Hydrogen bromide			-120.28	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*843
Propyl nitrite		-94.5	-118.3	± 1.7	kJ/mol	89.0932 ± 0.0025	543-67-9*0
Propyl nitrite		-94.2	-118.8	± 2.4	kJ/mol	89.0932 ± 0.0025	543-67-9*2
Propyl nitrite		-94.3	-118.9	± 2.4	kJ/mol	89.0932 ± 0.0025	543-67-9*3
Propyl nitrite		-93.5	-118.1	± 2.4	kJ/mol	89.0932 ± 0.0025	543-67-9*4
Propyl nitrite		-93.5	-117.8	± 2.4	kJ/mol	89.0932 ± 0.0025	543-67-9*5
Propyl nitrite		-91.6	-116.6	± 2.4	kJ/mol	89.0932 ± 0.0025	543-67-9*6
Propyl nitrite		-91.3	-116.4	± 2.4	kJ/mol	89.0932 ± 0.0025	543-67-9*7
Propyl nitrite		-89.9	-114.8	± 2.7	kJ/mol	89.0932 ± 0.0025	543-67-9*8
2-Butynylium		1085.9	1077.7	± 1.3	kJ/mol	53.0820 ± 0.0032	64235-83-2*0
1-Methylethylidene		316.08	303.18	± 0.97	kJ/mol	42.0797 ± 0.0024	40852-89-9*0
Ammonium hydroxide			-365.76	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*811
Glycine		-373.80	-393.43	± 0.80	kJ/mol	75.0666 ± 0.0017	56-40-6*2
Glycine		-372.66	-390.70	± 0.83	kJ/mol	75.0666 ± 0.0017	56-40-6*3
Glycine		-370.19	-388.76	± 0.80	kJ/mol	75.0666 ± 0.0017	56-40-6*4
Glycine		-366.48	-385.23	± 0.83	kJ/mol	75.0666 ± 0.0017	56-40-6*5
Glycine		-358.01	-376.06	± 0.83	kJ/mol	75.0666 ± 0.0017	56-40-6*6
Glycine		-353.64	-368.93	± 0.96	kJ/mol	75.0666 ± 0.0017	56-40-6*7
Glycine		-352.9	-371.2	± 1.0	kJ/mol	75.0666 ± 0.0017	56-40-6*8
Glycine cation		520.3	501.8	± 2.8	kJ/mol	75.0661 ± 0.0017	35492-82-1*0
Glycine cation		554.2	536.1	± 3.3	kJ/mol	75.0661 ± 0.0017	35492-82-1*2
Glycine cation		555.1	537.7	± 3.3	kJ/mol	75.0661 ± 0.0017	35492-82-1*3
Glycine cation		557.1	539.4	± 3.3	kJ/mol	75.0661 ± 0.0017	35492-82-1*4
Dioxoethylium		688.6	689.8	± 2.9	kJ/mol	57.0276 ± 0.0017	1994332-01-20
Glycine		-508.34	-528.64	± 0.23	kJ/mol	75.0666 ± 0.0017	56-40-6*513
Glycine		-508.04	-528.05	± 0.22	kJ/mol	75.0666 ± 0.0017	56-40-6*512
Ethanedial anion		-188.8	-190.3	± 3.1	kJ/mol	57.0287 ± 0.0017	1994332-01-2*0
Nitrous oxide			61.42	± 0.11	kJ/mol	44.01288 ± 0.00033	10024-97-2*1000
Hydrogen bromide			-119.75	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*830
Propynylidene		597.9	599.6	± 1.2	kJ/mol	38.0480 ± 0.0024	67152-18-5*2
Glycine			-470.87	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*818
Glycine			-470.76	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*819
Glycine			-470.67	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*820
Glycine			-470.57	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*821
Glycine			-470.49	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*822
Glycine			-470.37	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*825
Glycine			-470.30	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*828
Glycine			-470.23	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*829
Glycine			-470.19	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*830
Glycine			-470.16	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*831
Glycine			-470.14	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*832
Glycine			-470.13	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*833
Glycine			-470.12	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*835
Glycine			-470.11	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*839
Glycine			-470.09	± 0.21	kJ/mol	75.0666 ± 0.0017	56-40-6*861
Chlorine atom dianion		406.6	408.2	± 4.8	kJ/mol	35.45380 ± 0.00090	33944-49-9*0
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*837
Carboxymethanaminium		290.5	268.0	± 1.5	kJ/mol	76.0740 ± 0.0018	56-40-62
Carboxymethanaminium		300.8	277.4	± 1.5	kJ/mol	76.0740 ± 0.0018	56-40-63
Carboxymethanaminium			-518.21	± 0.21	kJ/mol	76.0740 ± 0.0018	56-40-6800
Methylcarbamic acid		-414.50	-432.75	± 0.92	kJ/mol	75.0666 ± 0.0017	6414-57-9*0
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*838
Methylcarbamic acid		-408.6	-427.7	± 2.0	kJ/mol	75.0666 ± 0.0017	6414-57-9*2
Methylcarbamic acid		-385.8	-405.0	± 2.0	kJ/mol	75.0666 ± 0.0017	6414-57-9*3
Methylcarbamic acid		-380.6	-399.0	± 2.0	kJ/mol	75.0666 ± 0.0017	6414-57-9*4
Chlorohydroxymethyl		-54.7	-60.4	± 1.1	kJ/mol	65.4787 ± 0.0012	147139-06-8*0
Carbamic acid		-421.82	-435.04	± 0.83	kJ/mol	61.0401 ± 0.0010	463-77-4*0
Carbamic acid		-392.9	-405.4	± 1.9	kJ/mol	61.0401 ± 0.0010	463-77-4*2
Hydrogen chloride			-166.823	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*846
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*840
1,2-Dibromoethene		124.7	104.5	± 1.6	kJ/mol	185.8453 ± 0.0026	540-49-8*0
trans-1,2-Dibromoethene	$C(\Br)=C/Br$	124.2	104.4	± 1.7	kJ/mol	185.8453 ± 0.0026	590-12-5*0
Hydroxyoxoethenylium		866.4	865.2	± 3.5	kJ/mol	57.0276 ± 0.0017	1994332-00-10
Hydrogen iodide			-56.134	± 0.097	kJ/mol	127.912410 ± 0.000076	10034-85-2*829
Ethynediolide		-132.9	-134.0	± 3.5	kJ/mol	57.0287 ± 0.0017	1994332-00-1*0
Cyanic fluoride cation		1294.2	1294.6	± 1.1	kJ/mol	45.01529 ± 0.00080	62532-69-8*0
Acetylide		843.0	849.5	± 3.2	kJ/mol	24.0225 ± 0.0016	34846-56-5*0
1,2-Diiodoethene		215.19	208.25	± 0.35	kJ/mol	279.8462 ± 0.0016	20244-70-6*0
Cyclopropylidene		475.06	467.04	± 0.84	kJ/mol	40.0639 ± 0.0024	2143-70-6*0
Ethylidene		361.31	354.32	± 0.48	kJ/mol	28.0532 ± 0.0016	4218-50-2*0
Hydrogen chloride			-164.927	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*821
Ammonium hydroxide			-364.33	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*802
2,2,4-Trimethylpentane		-171.1	-223.5	± 1.5	kJ/mol	114.2285 ± 0.0065	540-84-1*0
Hydrogen iodide			-56.464	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*839
Cyanogen chloride anion		46.8	51.2	± 3.1	kJ/mol	61.4707 ± 0.0012	12281-43-5*0
Fluorosyl fluoride		192.8	193.3	± 2.3	kJ/mol	53.99621 ± 0.00030	86825-57-2*0
Chloroethane		-134.33	-135.95	± 0.25	kJ/mol	64.5138 ± 0.0019	75-00-3*500
Isocyanic acid anion		-54.2	-57.4	± 3.0	kJ/mol	43.02533 ± 0.00086	444010-28-00
Ammonium hydroxide			-365.92	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*813
Nitrilomethylimidogen		581.6	578.4	± 1.5	kJ/mol	41.03212 ± 0.00082	324529-58-0*0
Ethylperoxy		-6.09	-22.05	± 0.60	kJ/mol	61.0599 ± 0.0017	3170-61-4*0
Iminomethylimidogen anion		401.9	400.0	± 2.3	kJ/mol	41.03267 ± 0.00082	150296-30-3*0
Acetic acid			-484.80	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*839
1-Methylene-2-propenylium		1059.5	1049.4	± 1.7	kJ/mol	53.0820 ± 0.0032	62698-26-4*0
1,1-Dibromoethane			-67.0	± 1.3	kJ/mol	187.8612 ± 0.0026	557-91-5*500
Hydrogen chloride			-166.488	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*835
Hydrogen bromide			-119.10	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*822
Ammonium hydroxide			-366.35	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*841
(Methylamino)methyl anion		202.1	185.2	± 3.1	kJ/mol	44.0763 ± 0.0017	31277-25-50
3-Buten-2-one		-95.28	-110.82	± 0.85	kJ/mol	70.0898 ± 0.0032	78-94-4*0
Hydrogen fluoride			-321.87	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*819
3-Buten-2-one		-93.7	-109.7	± 1.6	kJ/mol	70.0898 ± 0.0032	78-94-4*2
Trihydrogen cation		1110.577	1106.695	± 0.013	kJ/mol	3.02327 ± 0.00021	28132-48-1*1
1,3-Butadien-2-ol		-47.9	-64.2	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*12
Hydrogen bromide			-92.66	± 0.13	kJ/mol	80.9119 ± 0.0010	10035-10-6*803
1,3-Butadien-2-ol		-37.8	-54.2	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*22
Oxirene		272.44	270.29	± 0.60	kJ/mol	42.0367 ± 0.0016	157-18-6*0
1,3-Butadien-2-ol		-42.6	-58.6	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*2
1,3-Butadien-2-ol		-53.3	-68.2	± 1.5	kJ/mol	70.0898 ± 0.0032	59120-04-6*0
Peroxyformyl		-100.40	-105.50	± 0.67	kJ/mol	61.0168 ± 0.0012	56240-83-6*0
1-Hydroxyethenyl anion		16.5	9.8	± 2.7	kJ/mol	43.0452 ± 0.0016	112539-13-6*21
Hydrogen fluoride			-324.98	± 0.16	kJ/mol	20.006343 ± 0.000070	7664-39-3*847
Fluorine atom		82.088	83.873	± 0.017	kJ/mol	18.99840320 ± 0.00000050	14762-94-8*2
Hydrogen iodide			-49.962	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*811
Dioxyamidogen		251.1	244.6	± 2.5	kJ/mol	47.01348 ± 0.00061	71843-95-3*1
Hydrodioxonitrate		-61.9	-68.3	± 3.1	kJ/mol	47.01403 ± 0.00061	61508-71-2*0
2-Methanidylidynehydrazin-2-ium-1-ide		531.7	530.3	± 2.3	kJ/mol	41.03267 ± 0.00082	947408-74-411
Acrolein cation		920.02	910.06	± 0.79	kJ/mol	56.0627 ± 0.0024	84005-05-0*0
Acrolein cation		930.9	921.0	± 1.9	kJ/mol	56.0627 ± 0.0024	84005-05-0*2
Acrolein anion		-71.8	-81.3	± 3.1	kJ/mol	56.0638 ± 0.0024	23555-87-5*0
Acrolein anion		-67.9	-77.9	± 3.5	kJ/mol	56.0638 ± 0.0024	23555-87-5*1
2-Cyclopropyn-1-ylidene		898.4	905.3	± 1.5	kJ/mol	36.0321 ± 0.0024	102508-15-6*0
Difluorodioxidane anion		-251.	-251.	± 28.	kJ/mol	69.99615 ± 0.00060	7783-45-10
Ethoxyoxoniumylidene		923.9	911.6	± 1.5	kJ/mol	61.0594 ± 0.0017	268728-77-4*0
Nitric acid			-206.01	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*822
Propyn-1-ol cation		959.9	951.7	± 3.0	kJ/mol	56.0627 ± 0.0024	84005-04-9*0
Peroxyformate		-340.93	-346.38	± 0.80	kJ/mol	61.0174 ± 0.0012	104960-05-6*0
2-Methyloxirene		344.0	334.7	± 1.8	kJ/mol	56.0633 ± 0.0024	2835-41-8*1
2-Methyloxirene		346.6	336.7	± 2.5	kJ/mol	56.0633 ± 0.0024	2835-41-8*12
Difluorodinitrate		-207.8	-206.6	± 4.7	kJ/mol	66.01083 ± 0.00014	37366-65-7*1
Dichlorine cation		1108.307	1108.286	± 0.0062	kJ/mol	70.9049 ± 0.0018	12595-90-3*0
Ethanimine		55.81	41.17	± 0.72	kJ/mol	43.0678 ± 0.0016	20729-41-3*0
Ammonium hydroxide			-366.34	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*842
Acetic acid			-484.81	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*841
Acryloyl		101.2	96.4	± 1.4	kJ/mol	55.0553 ± 0.0024	72241-20-4*0
Acryloyl		101.2	95.9	± 1.4	kJ/mol	55.0553 ± 0.0024	72241-20-4*1
Acryloyl		109.6	103.9	± 5.7	kJ/mol	55.0553 ± 0.0024	72241-20-4*12
1-Oxo-2-propenylium		772.8	766.0	± 3.0	kJ/mol	55.0548 ± 0.0024	35335-83-2*0
1-Oxo-2-propenylium		1036.1	1030.7	± 3.9	kJ/mol	55.0548 ± 0.0024	35335-83-2*1
1-Oxo-2-propenide		50.7	46.0	± 2.6	kJ/mol	55.0559 ± 0.0024	78944-75-9*0
Ethoxyoxoniumylidene		962.5	947.8	± 1.6	kJ/mol	61.0594 ± 0.0017	268728-77-4*2
Ethoxyoxoniumylidene		967.6	951.7	± 2.4	kJ/mol	61.0594 ± 0.0017	268728-77-4*23
Hydrogen chloride			-166.517	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*837
1-Formylethenylium		1023.5	1018.0	± 2.3	kJ/mol	55.0548 ± 0.0024	101705-89-9*0
Propargylenide		434.5	437.7	± 1.1	kJ/mol	38.0485 ± 0.0024	82906-05-6*0
Hypochloroperoxoous acid, hydroxy ester		48.4	41.6	± 1.8	kJ/mol	84.4588 ± 0.0013	928652-99-7*0
Ethaneperoxolate		-120.32	-136.38	± 0.68	kJ/mol	61.0604 ± 0.0017	268728-75-2*0
Hydrogen fluoride			-322.13	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*909
3-Oxo-1-propenyl		190.97	185.43	± 0.91	kJ/mol	55.0553 ± 0.0024	206255-29-0*0
Difluorodioxidanium		1283.7	1280.1	± 2.3	kJ/mol	69.99506 ± 0.00060	7783-44-00
3-Oxo-1-propenyl		191.7	185.9	± 2.1	kJ/mol	55.0553 ± 0.0024	206255-29-0*2
Acetic acid			-483.35	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*812
3-Oxo-1-propenyl		201.4	195.5	± 2.0	kJ/mol	55.0553 ± 0.0024	206255-29-0*22
3-Oxo-1-propenyl		206.1	200.2	± 2.0	kJ/mol	55.0553 ± 0.0024	206255-29-0*12
3-Oxo-1-propenylium		1005.1	1002.8	± 2.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*0
3-Oxo-1-propenylium		1185.6	1180.0	± 3.0	kJ/mol	55.0548 ± 0.0024	101705-90-2*1
Cyanic acid cation		1135.7	1133.2	± 2.9	kJ/mol	43.02423 ± 0.00086	59780-31-3*0
3-Oxo-1-propenylium		1185.6	1179.9	± 3.0	kJ/mol	55.0548 ± 0.0024	101705-90-2*11
3-Oxo-1-propenylium		1197.7	1192.4	± 3.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*12
1,3-Butadiyne-1,4-diyl		1083.98	1093.79	± 0.83	kJ/mol	48.0428 ± 0.0032	78015-07-3*2
3-Oxo-1-propenylium		1195.7	1189.8	± 3.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*112
3-Oxo-1-propenylium		1205.8	1200.3	± 3.8	kJ/mol	55.0548 ± 0.0024	101705-90-2*122
2-Formylethen-1-ide		27.4	21.4	± 2.5	kJ/mol	55.0559 ± 0.0024	135924-69-5*0
2-Formylethen-1-ide		27.4	20.6	± 2.5	kJ/mol	55.0559 ± 0.0024	135924-69-5*1
2-Formylethen-1-ide		30.5	23.8	± 3.1	kJ/mol	55.0559 ± 0.0024	135924-69-5*2
Oxirene		387.8	384.4	± 1.3	kJ/mol	42.0367 ± 0.0016	157-18-6*1
2-Formylethen-1-ide		54.6	47.9	± 3.1	kJ/mol	55.0559 ± 0.0024	135924-69-5*22
2-Formylethen-1-ide		65.0	58.5	± 3.1	kJ/mol	55.0559 ± 0.0024	135924-69-5*12
Propylidene anion		300.9	286.7	± 3.2	kJ/mol	42.0803 ± 0.0024	121408-55-70
1,2-Propadien-1-one anion		49.8	48.6	± 3.1	kJ/mol	54.0479 ± 0.0024	159171-62-7*0
Hydrogen chloride			-165.978	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*829
Pentachloroethylium		838.1	836.5	± 3.3	kJ/mol	201.2844 ± 0.0048	7094-17-90
Ethylideneammoniumylidene		1310.0	1300.4	± 3.0	kJ/mol	42.0594 ± 0.0016	91127-36-5*1
1-Oxo-2-propyn-1-ylium		1001.7	1003.2	± 3.0	kJ/mol	53.0389 ± 0.0024	53474-99-0*0
3-Oxo-1,2-propadien-1-yl anion		179.4	182.1	± 3.2	kJ/mol	53.0400 ± 0.0024	557113-97-0*0
Nitric acid			-206.01	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*891
Pentachloroethanide		-281.7	-280.3	± 3.9	kJ/mol	201.2854 ± 0.0048	263019-83-6*0
O--HH Complex		247.2	248.2	± 2.0	kJ/mol	18.01528 ± 0.00033	7732-18-5102
Formylethynyl anion		100.5	101.9	± 3.4	kJ/mol	53.0400 ± 0.0024	85905-64-2*0
Nitric acid			-206.02	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*828
2-Cyclopropen-1-one cation		1078.8	1075.7	± 2.0	kJ/mol	54.0468 ± 0.0024	100815-68-7*0
Ethylideneazanide		147.8	137.6	± 3.2	kJ/mol	42.0604 ± 0.0016	144810-43-5*0
Hydrazine anion		232.3	218.0	± 4.1	kJ/mol	32.04579 ± 0.00031	65391-88-0*0
Ethaneperoxolate		-119.8	-135.4	± 1.9	kJ/mol	61.0604 ± 0.0017	268728-75-2*1
Hypoiodous acid			-116.3	± 5.4	kJ/mol	143.91181 ± 0.00031	14332-21-9*800
Oxide		651.	653.	± 15.	kJ/mol	16.00050 ± 0.00030	16833-27-5*0
Isourea		-156.1	-172.7	± 2.6	kJ/mol	60.05534 ± 0.00091	4744-36-9*0
Acetic acid			-483.43	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*813
Hydrogen fluoride			-333.04	± 0.16	kJ/mol	20.006343 ± 0.000070	7664-39-3*866
Carbamoyl anion		-81.9	-87.8	± 3.1	kJ/mol	44.03327 ± 0.00087	78944-69-1*0
Ethynol cation		1063.8	1061.2	± 2.9	kJ/mol	42.0361 ± 0.0016	84005-02-7*0
Carbamoyl		74.1	68.3	± 2.7	kJ/mol	44.03272 ± 0.00087	2858-51-70
Carbamoyl		76.5	69.9	± 3.2	kJ/mol	44.03272 ± 0.00087	2858-51-72
Carbamoyl		96.4	90.1	± 3.2	kJ/mol	44.03272 ± 0.00087	2858-51-73
Carbamoyl		110.9	104.8	± 3.2	kJ/mol	44.03272 ± 0.00087	2858-51-74
Acetic acid			-484.69	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*844
Cyanic fluoride anion		-20.7	-18.7	± 2.9	kJ/mol	45.01639 ± 0.00080	34507-50-1*0
Hydrogen chloride			-166.848	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*850
(Hydroxyimino)methyl		250.2	244.4	± 1.8	kJ/mol	44.03272 ± 0.00087	206442-92-4*0
2-Hydroxyethenyl		138.01	132.19	± 0.72	kJ/mol	43.0446 ± 0.0016	108665-16-3*0
Hydrogen bromide			-71.66	± 0.13	kJ/mol	80.9119 ± 0.0010	10035-10-6*801
(Hydroxyimino)methyl		262.6	257.2	± 2.5	kJ/mol	44.03272 ± 0.00087	206442-92-4*3
(Hydroxyimino)methyl		281.4	276.0	± 2.5	kJ/mol	44.03272 ± 0.00087	206442-92-4*4
Acetic acid			-483.51	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*814
Formamide enol		-130.6	-141.6	± 1.3	kJ/mol	45.04066 ± 0.00088	60100-09-6*0
Nitric acid			-206.14	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*833
Formamide enol		-116.6	-127.6	± 2.1	kJ/mol	45.04066 ± 0.00088	60100-09-6*2
Formamide enol		-115.9	-126.6	± 2.1	kJ/mol	45.04066 ± 0.00088	60100-09-6*3
Formamide enol		-109.8	-120.6	± 2.1	kJ/mol	45.04066 ± 0.00088	60100-09-6*4
Diazene cation		1132.53	1125.87	± 0.64	kJ/mol	30.02881 ± 0.00020	76986-17-9*0
Aminohydroxymethylene		-22.4	-33.0	± 1.6	kJ/mol	45.04066 ± 0.00088	160720-48-9*0
Aminohydroxymethylene		-22.4	-33.0	± 1.6	kJ/mol	45.04066 ± 0.00088	160720-48-9*2
Aminohydroxymethylene		1.7	-8.9	± 2.3	kJ/mol	45.04066 ± 0.00088	160720-48-9*22
Aminohydroxymethylene		217.2	209.7	± 3.0	kJ/mol	45.04066 ± 0.00088	160720-48-9*1
1H-Diazirin-3-ylium		1527.2	1523.7	± 2.0	kJ/mol	41.03157 ± 0.00082	735234-64-7*0
Aminohydroxymethylene		220.1	211.4	± 3.4	kJ/mol	45.04066 ± 0.00088	160720-48-9*12
Peroxychlorite		-116.2	-114.9	± 2.3	kJ/mol	83.4514 ± 0.0013	852472-63-0*0
2-Iminoethyl		219.37	208.69	± 0.86	kJ/mol	42.0599 ± 0.0016	73843-90-0*0
Ammonium hydroxide			-366.32	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*843
1,2-Butadienylium		1099.2	1089.9	± 1.2	kJ/mol	53.0820 ± 0.0032	65114-67-20
Formaldoxime		30.6	20.0	± 1.3	kJ/mol	45.04066 ± 0.00088	75-17-2*0
O--HH Complex		247.7	249.0	± 2.7	kJ/mol	18.01528 ± 0.00033	7732-18-5101
Hydrogen bromide			-115.90	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*815
1,2-Dichloroethene		3.83	-1.49	± 0.55	kJ/mol	96.9427 ± 0.0024	540-59-0*0
Hydrogen chloride			-166.886	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*852
Hydrogen bromide			-119.86	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*831
Nitric acid			-206.14	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*895
Nitric acid			-206.27	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*841
Hydrogen chloride			-165.294	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*891
Acetic acid			-484.83	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*850
1-Hydroperoxyethylium		690.7	675.8	± 1.5	kJ/mol	61.0594 ± 0.0017	126898-98-40
Hydrogen fluoride			-321.99	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*825
Acetic acid			-484.84	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*852
2-Iminoethylium		1108.4	1097.7	± 2.9	kJ/mol	42.0594 ± 0.0016	73843-91-1*0
Hydrogen iodide			-56.494	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*954
Nitric acid			-206.34	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*844
Acetic acid			-484.85	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*855
Nitric acid			-206.39	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*850
2-Iminoethylium		1148.7	1140.2	± 3.3	kJ/mol	42.0594 ± 0.0016	73843-91-1*1
1-Cyanoethylidene		437.6	433.8	± 1.4	kJ/mol	53.0627 ± 0.0024	498544-34-6*0
Hydrogen iodide			-56.519	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*840
Oxooxoniumylmethoxy		1178.0	1177.3	± 5.7	kJ/mol	60.0084 ± 0.0012	952586-28-6*0
Cyanic acid anion		-9.2	-9.5	± 3.1	kJ/mol	43.02533 ± 0.00086	58199-47-6*0
Propadienylidene		678.34	679.32	± 0.41	kJ/mol	38.0480 ± 0.0024	60731-10-4*1
Dichlorovinylidene		424.4	427.6	± 3.0	kJ/mol	94.9268 ± 0.0024	20394-25-6*0
Diazene cation		1132.53	1125.60	± 0.64	kJ/mol	30.02881 ± 0.00020	76986-17-9*1
1-Hydroperoxyethylium		841.6	830.3	± 1.7	kJ/mol	61.0594 ± 0.0017	126898-98-41
3-Imino-2-propen-1-ylidene		530.7	526.4	± 1.2	kJ/mol	53.0627 ± 0.0024	916765-05-4*0
Chlorovinylidene		429.3	431.0	± 2.9	kJ/mol	60.4820 ± 0.0018	70277-82-6*0
3-Imino-2-propen-1-ylidene		571.9	567.1	± 1.6	kJ/mol	53.0627 ± 0.0024	916765-05-4*2
Nitrogen sesquioxide cation		1027.6	1023.7	± 4.8	kJ/mol	76.01113 ± 0.00091	10544-73-70
1-Hydroperoxyethylium		692.0	676.3	± 2.3	kJ/mol	61.0594 ± 0.0017	126898-98-422
Hydrogen fluoride			-324.43	± 0.14	kJ/mol	20.006343 ± 0.000070	7664-39-3*844
1-Hydroperoxyethylium		843.8	831.8	± 2.6	kJ/mol	61.0594 ± 0.0017	126898-98-412
2-(Methylidyneamino)ethenyl		600.7	596.4	± 1.2	kJ/mol	53.0627 ± 0.0024	123416-74-0*0
1H-diazirin-3-ide		379.8	376.7	± 2.0	kJ/mol	41.03267 ± 0.00082	735234-64-70
2-(Methylidyneamino)ethenyl		634.5	630.5	± 1.6	kJ/mol	53.0627 ± 0.0024	123416-74-0*2
Bromine atom		162.009	155.947	± 0.055	kJ/mol	79.90400 ± 0.00100	10097-32-2*2
Hydrogen bromide			-119.92	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*832
Carbonylbis(oxy)		-144.7	-145.7	± 2.4	kJ/mol	60.0089 ± 0.0012	16518-45-9*0
Tetraiodomethane			238.	± 10.	kJ/mol	519.62858 ± 0.00081	507-25-5*500
Ethynol anion		163.5	165.0	± 3.3	kJ/mol	42.0372 ± 0.0016	864971-50-6*0
Methylaminyliumyl		1423.0	1416.0	± 2.2	kJ/mol	29.04071 ± 0.00083	56924-51-7*2
Propylidene		349.52	335.83	± 0.92	kJ/mol	42.0797 ± 0.0024	6700-78-3*0
Hydrogen iodide			-56.552	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*841
Hydrogen bromide			-120.33	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*846
1,3-Propanediyl		319.3	307.9	± 1.3	kJ/mol	42.0797 ± 0.0024	32458-33-6*1
1,3-Butadienyl		372.30	363.08	± 0.87	kJ/mol	53.0825 ± 0.0032	86181-68-2*0
1,3-Butadienyl		374.9	364.5	± 1.9	kJ/mol	53.0825 ± 0.0032	86181-68-2*12
Carbonate			-675.162	± 0.053	kJ/mol	60.0100 ± 0.0012	3812-32-6*800
2-Cyanovinyl		447.86	445.45	± 0.98	kJ/mol	52.0547 ± 0.0024	189141-20-6*0
2-Cyanovinylium		1517.3	1515.2	± 1.8	kJ/mol	52.0542 ± 0.0024	85398-67-0*2
2-Cyanovinyl anion		263.8	261.5	± 1.8	kJ/mol	52.0553 ± 0.0024	85398-67-00
2-Iminoethyl anion		104.5	94.1	± 2.1	kJ/mol	42.0604 ± 0.0016	73843-87-5*0
1,3-Butadienyl		384.1	374.5	± 1.9	kJ/mol	53.0825 ± 0.0032	86181-68-2*21
2-Isocyanovinyl		543.3	541.8	± 1.7	kJ/mol	52.0547 ± 0.0024	225798-14-1*0
Hydrogen iodide			-55.35	± 0.11	kJ/mol	127.912410 ± 0.000076	10034-85-2*819
1,3-Butadienyl		385.6	375.4	± 1.9	kJ/mol	53.0825 ± 0.0032	86181-68-2*22
Cyanomethyliumyl		1506.4	1508.0	± 2.3	kJ/mol	39.0355 ± 0.0016	34447-38-6*0
Cyanomethylene anion		286.3	286.8	± 1.5	kJ/mol	39.0366 ± 0.0016	12373-24-9*0
Cyanomethylene		479.6	483.0	± 1.1	kJ/mol	39.0361 ± 0.0016	2612-62-6*0
Nitric acid			-206.46	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*855
1,3-Butadienylium		1133.7	1123.7	± 2.5	kJ/mol	53.0820 ± 0.0032	86181-69-3*0
Isocyanomethyliumyl		1506.7	1508.6	± 3.2	kJ/mol	39.0355 ± 0.0016	99045-54-2*0
Isocyanomethylene anion		401.4	402.1	± 2.0	kJ/mol	39.0366 ± 0.0016	144141-01-5*0
Isocyanomethylene		583.1	585.3	± 1.6	kJ/mol	39.0361 ± 0.0016	78694-65-2*0
2-Hydroperoxyethyl		64.8	51.4	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-97-3*0
3-Oxo-1,2-propadien-1-ylium-1-yl		1380.4	1385.7	± 3.8	kJ/mol	52.0310 ± 0.0024	151455-13-9*0
3-Oxo-1,2-propadienylidene anion		224.4	230.2	± 3.5	kJ/mol	52.0320 ± 0.0024	109292-50-4*0
Fluoromethane cation		981.82	974.32	± 0.62	kJ/mol	34.03237 ± 0.00083	59122-96-2*0
Hydrogen bromide			-119.18	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*891
2-Hydroperoxyethyl		64.8	51.0	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-97-3*3
Fluoromethane			-251.65	± 0.25	kJ/mol	34.03292 ± 0.00083	593-53-3*590
Ethynylamidogen anion		233.7	230.5	± 3.2	kJ/mol	40.0446 ± 0.0016	64066-03-1*0
Trioxidaniumyl		925.5	916.6	± 1.4	kJ/mol	50.01353 ± 0.00091	161321-37-5*0
Water dimer cation		557.2	546.8	± 3.0	kJ/mol	36.03001 ± 0.00066	158061-35-9*0
Hydrogen fluoride			-321.78	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*817
2-Hydroperoxyethyl		65.2	51.8	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*1
Peroxychlorous acid		95.4	89.8	± 2.0	kJ/mol	84.4588 ± 0.0013	177778-92-6*0
Hydrogen chloride			-166.923	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*855
1,3-Cyclobutadiene cation		1215.6	1207.2	± 3.0	kJ/mol	52.0740 ± 0.0032	34531-09-4*0
1-Iminoethyl		233.1	223.0	± 1.1	kJ/mol	42.0599 ± 0.0016	128365-64-0*0
1-Iminoethyl		252.4	242.4	± 2.0	kJ/mol	42.0599 ± 0.0016	128365-64-0*1
2-Methyl-2-cyclopropen-1-ylidene		448.1	441.9	± 1.2	kJ/mol	52.0746 ± 0.0032	185841-59-2*0
2-Methyl-2-cyclopropen-1-ylidene		670.7	664.7	± 2.8	kJ/mol	52.0746 ± 0.0032	185841-59-2*1
Chloromethane		-106.44	-102.47	± 0.17	kJ/mol	50.4872 ± 0.0012	74-87-3*590
Bromomethane cation		996.66	981.75	± 0.20	kJ/mol	94.9380 ± 0.0013	12538-70-4*0
1-Iminoethylium		833.7	823.2	± 3.0	kJ/mol	42.0594 ± 0.0016	128365-64-00
1-Iminoethylium		1342.2	1333.3	± 3.9	kJ/mol	42.0594 ± 0.0016	128365-64-01
Propylidene		362.8	347.5	± 2.8	kJ/mol	42.0797 ± 0.0024	6700-78-3*22
2-Hydroperoxyethyl		65.7	51.7	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*31
Vinylvinylidene		494.2	488.8	± 1.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*0
Vinylvinylidene		690.5	684.7	± 2.6	kJ/mol	52.0746 ± 0.0032	148759-16-4*1
Hydrogen bromide			-119.36	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*825
Vinylvinylidene		695.5	689.0	± 3.3	kJ/mol	52.0746 ± 0.0032	148759-16-4*12
Vinylvinylidene cation		1429.9	1424.6	± 2.0	kJ/mol	52.0740 ± 0.0032	161054-20-2*0
Vinylvinylidene cation		1437.9	1432.3	± 2.7	kJ/mol	52.0740 ± 0.0032	161054-20-2*2
Vinylvinylidene anion		405.8	399.0	± 2.0	kJ/mol	52.0751 ± 0.0032	167386-49-4*0
Vinylvinylidene anion		423.3	416.7	± 2.7	kJ/mol	52.0751 ± 0.0032	167386-49-4*2
2-Hydroperoxyethyl		65.8	52.1	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*12
Acetic acid			-483.59	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*815
1,2-Butadien-1-ylidene		511.8	506.3	± 2.0	kJ/mol	52.0746 ± 0.0032	119908-55-3*0
1,2-Butadien-1-ylidene		651.8	646.3	± 3.7	kJ/mol	52.0746 ± 0.0032	119908-55-3*1
Ethenyldioxy		118.42	109.52	± 0.99	kJ/mol	59.0440 ± 0.0017	88181-72-0*0
1-Iminoethylium		1378.3	1368.8	± 4.3	kJ/mol	42.0594 ± 0.0016	128365-64-011
Ethenyldioxy		122.6	112.9	± 2.0	kJ/mol	59.0440 ± 0.0017	88181-72-0*2
Iodomethane cation		944.82	935.42	± 0.16	kJ/mol	141.93844 ± 0.00083	12538-72-6*0
Diazene		207.17	200.03	± 0.40	kJ/mol	30.02936 ± 0.00020	3618-05-1*0
Fluorosyl fluoride anion		-147.1	-146.8	± 3.0	kJ/mol	53.99675 ± 0.00030	86825-57-20
Hydrogen bromide			-120.36	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*850
1-Iminoethanide		185.7	175.6	± 3.2	kJ/mol	42.0604 ± 0.0016	128365-65-10
Fluoroform			-704.70	± 0.42	kJ/mol	70.01385 ± 0.00080	75-46-7*590
1,2,3-Butatrien-1-ylium		1271.9	1270.1	± 1.1	kJ/mol	51.0661 ± 0.0032	81932-79-8*0
Hydrogen bromide			-120.40	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*852
Hydrogen peroxide cation		897.32	890.32	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*12
2-Hydroxyethylium		1019.3	1007.2	± 1.5	kJ/mol	45.0600 ± 0.0017	38607-31-7*0
1-Iminoethanide		193.2	182.6	± 3.6	kJ/mol	42.0604 ± 0.0016	128365-65-11
Isofulminic acid cation		1377.0	1374.9	± 2.9	kJ/mol	43.02423 ± 0.00086	117800-60-9*0
Acetic acid			-484.86	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*861
1-Buten-3-yn-1-yl		547.40	544.88	± 0.84	kJ/mol	51.0666 ± 0.0032	2810-61-9*0
1-Buten-3-ynylium		1482.5	1480.3	± 1.4	kJ/mol	51.0661 ± 0.0032	84654-85-3*0
But-1-en-3-yn-1-ide		419.9	419.2	± 1.2	kJ/mol	51.0672 ± 0.0032	119611-65-3*0
Hydrogen bromide			-120.43	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*855
Hydrogen chloride			-163.676	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*818
Isocyanogen chloride anion		102.9	107.4	± 3.9	kJ/mol	61.4707 ± 0.0012	923019-39-0*0
Hypobromous acid cation		975.25	964.63	± 0.54	kJ/mol	96.9108 ± 0.0010	154804-02-1*0
Iodotrifluoromethane cation		412.8	407.5	± 2.6	kJ/mol	195.90983 ± 0.00080	64626-54-6*0
3-Buten-1-ynylium		1572.7	1570.3	± 1.7	kJ/mol	51.0661 ± 0.0032	103928-84-3*0
But-3-en-1-yn-1-ide		326.8	323.7	± 1.3	kJ/mol	51.0672 ± 0.0032	58870-47-6*0
Hydrogen iodide			-56.577	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*898
Hydrogen fluoride			-330.12	± 0.16	kJ/mol	20.006343 ± 0.000070	7664-39-3*861
Ammonium hydroxide			-364.92	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*804
Ethynol		406.2	403.0	± 3.1	kJ/mol	42.0367 ± 0.0016	32038-79-2*12
3-Methylene-1-cyclopropen-1-ylium		1398.8	1395.5	± 1.7	kJ/mol	51.0661 ± 0.0032	117469-28-0*0
Dimethyl carbonate		-537.1	-557.7	± 1.8	kJ/mol	90.0779 ± 0.0026	616-38-6*2
Isocyanic fluoride cation		1618.0	1618.6	± 4.0	kJ/mol	45.01529 ± 0.00080	16992-26-00
N-Methylenemethaniminium		904.4	893.4	± 3.1	kJ/mol	42.0594 ± 0.0016	88333-01-1*0
2-Cyclopropen-1-ylidenemethylium		1346.5	1343.9	± 1.8	kJ/mol	51.0661 ± 0.0032	112936-36-4*0
N-Methylenemethaniminium		1157.2	1147.3	± 4.0	kJ/mol	42.0594 ± 0.0016	88333-01-1*1
Isocyanic fluoride anion		73.9	75.6	± 5.7	kJ/mol	45.01639 ± 0.00080	357426-78-9*0
Formylimidogen		245.2	242.1	± 4.6	kJ/mol	43.02478 ± 0.00086	42288-92-6*1
N-Methylidynemethanaminium		881.1	870.3	± 3.0	kJ/mol	42.0594 ± 0.0016	64709-60-0*0
1,3-Cyclobutadien-1-ylium		1388.4	1383.4	± 1.8	kJ/mol	51.0661 ± 0.0032	81913-77-1*0
Hydrogen iodide			-56.192	± 0.097	kJ/mol	127.912410 ± 0.000076	10034-85-2*830
Diazene		207.17	200.03	± 0.40	kJ/mol	30.02936 ± 0.00020	3618-05-1*1
(Methylimino)methyl		278.0	267.9	± 1.1	kJ/mol	42.0599 ± 0.0016	117928-23-1*0
Cyclobutenide		320.4	307.9	± 3.2	kJ/mol	53.0830 ± 0.0032	60211-42-9*0
2-Propenylidene		417.6	410.6	± 1.5	kJ/mol	40.0639 ± 0.0024	19527-08-3*1
Ethynol		409.2	406.1	± 3.1	kJ/mol	42.0367 ± 0.0016	32038-79-2*13
(Methylimino)methyl		297.1	287.1	± 2.0	kJ/mol	42.0599 ± 0.0016	117928-23-1*2
(Methylimino)methanide		223.0	212.2	± 3.2	kJ/mol	42.0604 ± 0.0016	64709-60-00
Phenylperoxy cation		1019.1	1002.0	± 3.1	kJ/mol	109.1022 ± 0.0049	956036-17-2*0
Phenylperoxy anion		-38.8	-55.7	± 3.3	kJ/mol	109.1032 ± 0.0049	956036-17-20
(Methylimino)methanide		236.6	225.7	± 3.6	kJ/mol	42.0604 ± 0.0016	64709-60-02
Hydrogen iodide			-55.51	± 0.11	kJ/mol	127.912410 ± 0.000076	10034-85-2*820
Acetic acid			-483.74	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*816
1-Aminoethenylium		900.0	889.2	± 3.0	kJ/mol	42.0594 ± 0.0016	139597-26-50
Hydrogen chloride			-166.948	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*861
Fulvene cation		1043.7	1027.9	± 2.7	kJ/mol	78.1113 ± 0.0048	34504-75-1*0
Fulvene anion		191.4	176.4	± 4.0	kJ/mol	78.1124 ± 0.0048	34504-63-7*0
Ammonium hydroxide			-366.28	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*846
Formic acid cation		722.00	715.46	± 0.24	kJ/mol	46.0248 ± 0.0010	50614-05-6*0
cis-1,3,5-Hexatriene		190.7	170.6	± 2.9	kJ/mol	80.1277 ± 0.0048	2612-46-6*0
Formic acid anion		-256.1	-262.3	± 1.8	kJ/mol	46.0259 ± 0.0010	19066-82-1*0
Bromoform			8.78	± 0.71	kJ/mol	252.7306 ± 0.0031	75-25-2*590
Hydrogen iodide			-44.15	± 0.30	kJ/mol	127.912410 ± 0.000076	10034-85-2*807
1-Aminoethenide		216.0	205.2	± 3.2	kJ/mol	42.0604 ± 0.0016	139597-26-5*0
Fulvenone cation		913.5	903.3	± 1.9	kJ/mol	92.0948 ± 0.0048	884319-80-6*0
Trihydrogen		254.5	250.7	± 1.2	kJ/mol	3.02382 ± 0.00021	12184-91-7*200
Hydrogen peroxide			-190.72	± 0.25	kJ/mol	34.01468 ± 0.00062	7722-84-1*800
Dinitrogen anion		192.5	192.5	± 1.7	kJ/mol	28.01403 ± 0.00014	12185-02-3*0
1,1-Ethenediol		-307.51	-320.05	± 0.82	kJ/mol	60.0520 ± 0.0017	10375-04-9*0
Silicon atom tetracation		10401.10	10404.08	± 0.56	kJ/mol	28.08331 ± 0.00030	22537-24-2*0
Silicon anion		316.28	319.26	± 0.56	kJ/mol	28.08605 ± 0.00030	14337-02-1*0
Acetic acid			-483.91	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*817
Methoxymethylene		129.25	118.75	± 0.78	kJ/mol	44.0526 ± 0.0017	19527-10-7*2
Disilicon anion		375.1	379.0	± 1.7	kJ/mol	56.17155 ± 0.00060	64236-73-3*0
Iodine monochloride		-36.511	-35.537	± 0.063	kJ/mol	162.35717 ± 0.00090	7790-99-0*500
1,1-Ethenediol		-302.3	-315.6	± 1.9	kJ/mol	60.0520 ± 0.0017	10375-04-9*2
Hydrogen bromide			-119.50	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*828
Chlorine atom		130.176	131.783	± 0.0011	kJ/mol	35.45270 ± 0.00090	22537-15-1*2
Hydrogen iodide			-55.962	± 0.099	kJ/mol	127.912410 ± 0.000076	10034-85-2*825
Difluoromethane			-468.91	± 0.37	kJ/mol	52.02339 ± 0.00081	75-10-5*590
1,1-Ethenediol		-296.0	-309.2	± 1.9	kJ/mol	60.0520 ± 0.0017	10375-04-9*3
Hydrogen iodide			-56.598	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*842
Ethynol		455.3	452.0	± 3.1	kJ/mol	42.0367 ± 0.0016	32038-79-2*14
1,3-Propanediyl		337.7	323.0	± 2.2	kJ/mol	42.0797 ± 0.0024	32458-33-6*2
Hydrogen chloride			-164.501	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*820
Dibromomethane			-31.42	± 0.61	kJ/mol	173.8346 ± 0.0022	74-95-3*590
Silicon carbide anion		508.8	513.4	± 4.3	kJ/mol	40.09675 ± 0.00085	86017-99-4*0
Hydrogen bromide			-119.97	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*833
Methane anion		27.3	19.4	± 5.1	kJ/mol	16.04301 ± 0.00085	27680-53-1*0
Silicon carbide		-70.6	-71.6	± 1.5	kJ/mol	40.09620 ± 0.00085	409-21-2*500
Methane			-87.692	± 0.062	kJ/mol	16.04246 ± 0.00085	74-82-8*1000
2-Aminoethenyl		319.8	310.2	± 1.3	kJ/mol	42.0599 ± 0.0016	176964-54-8*0
Glycolaldehyde		-304.28	-317.32	± 0.89	kJ/mol	60.0520 ± 0.0017	141-46-8*0
Trifluorosilyl anion		-1225.8	-1229.1	± 3.4	kJ/mol	85.08126 ± 0.00030	54711-93-2*0
Trioxodinitrate anion		-104.3	-107.5	± 1.9	kJ/mol	76.01223 ± 0.00091	194856-62-7*0
2-Aminoethenylium		1110.6	1099.9	± 2.4	kJ/mol	42.0594 ± 0.0016	64724-21-6*1
Difluorosilylene anion		-652.8	-653.1	± 3.4	kJ/mol	66.08285 ± 0.00030	145089-80-1*0
Difluorosilylene		-629.1	-630.0	± 1.3	kJ/mol	66.08231 ± 0.00030	13966-66-0*0
Difluorosilylene		-314.3	-314.9	± 1.3	kJ/mol	66.08231 ± 0.00030	13966-66-0*1
Peroxychlorous acid		101.5	95.4	± 3.6	kJ/mol	84.4588 ± 0.0013	177778-92-6*3
Diazene anion		265.6	258.8	± 2.0	kJ/mol	30.02991 ± 0.00020	100429-75-2*0
2-Aminoethenyl anion		230.2	219.4	± 2.6	kJ/mol	42.0604 ± 0.0016	64724-21-60
Formate			-425.44	± 0.45	kJ/mol	45.0180 ± 0.0010	71-47-6*800
Fluorosilylidyne		297.19	298.41	± 0.62	kJ/mol	47.08390 ± 0.00030	11128-24-8*2
Ethynol		464.0	460.7	± 3.1	kJ/mol	42.0367 ± 0.0016	32038-79-2*15
Hydrogen fluoride			-324.14	± 0.13	kJ/mol	20.006343 ± 0.000070	7664-39-3*843
Hydroxyaminylium		1019.5	1012.3	± 2.5	kJ/mol	32.02147 ± 0.00034	66097-71-0*0
Formic acid			-424.91	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*924
Ethylimidogen anion		277.3	263.4	± 3.6	kJ/mol	43.0684 ± 0.0016	82539-33-1*0
Formic acid			-425.12	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*923
1-Propen-1-yl-3-ylidene		656.8	653.4	± 1.1	kJ/mol	39.0559 ± 0.0024	84654-90-0*0
[1.1.1]Propellane		378.6	361.0	± 1.5	kJ/mol	66.1011 ± 0.0040	35634-10-7*0
Formic acid			-425.40	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*801
Silylene		271.60	269.94	± 0.81	kJ/mol	30.10138 ± 0.00033	13825-90-6*0
Formic acid			-425.50	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*802
Ethylimidogen cation		1394.6	1381.4	± 3.6	kJ/mol	43.0673 ± 0.0016	82539-33-11
5-Ethenyl-1,3-cyclopentadiene		237.2	216.3	± 1.4	kJ/mol	92.1384 ± 0.0056	29647-85-6*0
Disilane cation		1030.2	1017.4	± 2.2	kJ/mol	62.21809 ± 0.00073	96301-43-8*0
Hydrogen fluoride			-325.42	± 0.16	kJ/mol	20.006343 ± 0.000070	7664-39-3*850
Nitrous acid anion		-105.84	-109.31	± 0.78	kJ/mol	47.01403 ± 0.00061	256393-36-9*0
Tetrafluorohydrazine cation		1129.2	1123.0	± 2.5	kJ/mol	104.00654 ± 0.00014	37366-75-9*0
Acetic acid			-484.09	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*818
Trihydrogen		477.4	474.7	± 2.3	kJ/mol	3.02382 ± 0.00021	12184-91-7*201
Formic acid			-425.47	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*803
Formic acid			-425.43	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*804
Hydrogen bromide			-119.99	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*895
Disilene		288.8	280.2	± 1.7	kJ/mol	60.20276 ± 0.00066	15435-77-5*0
5-Ethenyl-1,3-cyclopentadiene		242.1	220.2	± 2.2	kJ/mol	92.1384 ± 0.0056	29647-85-6*2
Ammonium hydroxide			-366.18	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*852
1-Aziridinylium		1265.9	1254.2	± 3.1	kJ/mol	42.0594 ± 0.0016	91127-35-4*1
Hydroxyethenylidene		302.1	300.7	± 2.1	kJ/mol	42.0367 ± 0.0016	70277-80-4*0
Silylsilylene		317.3	309.5	± 1.9	kJ/mol	60.20276 ± 0.00066	50420-90-1*0
Cyanomethylium		1256.23	1253.59	± 0.61	kJ/mol	40.0435 ± 0.0016	34430-18-7*0
Carbon		2.389	1.861	± 0.043	kJ/mol	12.01070 ± 0.00080	7440-44-0*501
mu-Oxodioxodinitrogen		984.0	981.0	± 3.2	kJ/mol	76.01113 ± 0.00091	87950-63-8*1
Formic acid			-425.39	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*805
Hydroxyethenylidene		418.2	414.8	± 2.4	kJ/mol	42.0367 ± 0.0016	70277-80-4*1
1-Aziridinide		244.2	231.8	± 3.3	kJ/mol	42.0604 ± 0.0016	1358579-49-3*0
Formic acid			-425.32	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*807
Hydrogen peroxide		-129.398	-135.404	± 0.058	kJ/mol	34.01468 ± 0.00062	7722-84-1*1
Di-mu-hydrodihydrodisilicon		374.8	364.5	± 2.3	kJ/mol	60.20276 ± 0.00066	129970-82-7*0
Di-mu-hydrodihydrodisilicon		374.8	364.4	± 2.3	kJ/mol	60.20276 ± 0.00066	129970-82-7*1
Di-mu-hydrodihydrodisilicon		544.3	536.2	± 3.6	kJ/mol	60.20276 ± 0.00066	129970-82-7*11
Di-mu-hydrodihydrodisilicon cation		1180.3	1172.7	± 3.2	kJ/mol	60.20221 ± 0.00066	129970-82-70
Di-mu-hydrodihydrodisilicon anion		288.5	280.4	± 3.3	kJ/mol	60.20331 ± 0.00066	129970-83-80
Formic acid			-425.27	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*809
Ethynylaminylium		1277.8	1277.4	± 2.6	kJ/mol	40.0435 ± 0.0016	103835-08-1*0
Hydrogen bromide			-120.43	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*861
Formic acid			-425.22	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*811
Trihydrogen		745.878	743.199	± 0.062	kJ/mol	3.02382 ± 0.00021	12184-91-7*0
Hydrogen chloride			-166.404	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*833
Methyl hydrocarbonate		-571.8	-587.2	± 1.9	kJ/mol	76.0514 ± 0.0019	7456-87-3*2
Hydrogen chloride			-162.856	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*817
Hydrogen bromide			-118.35	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*819
Formic acid			-425.19	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*812
Formic acid			-425.17	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*813
Formic acid			-425.16	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*814
Hydrogen chloride			-165.820	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*892
Formic acid			-425.16	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*815
Methoxymethylene		129.25	118.75	± 0.78	kJ/mol	44.0526 ± 0.0017	19527-10-7*0
2-Aziridinyl		361.0	349.5	± 1.7	kJ/mol	42.0599 ± 0.0016	23838-09-70
2-Aziridinylium		1010.9	998.9	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-35-40
Formic acid			-425.16	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*816
Methyl hydrocarbonate		-562.8	-578.3	± 1.9	kJ/mol	76.0514 ± 0.0019	7456-87-3*3
Formic acid			-425.16	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*817
2-Aziridinylium		1305.0	1293.3	± 4.1	kJ/mol	42.0594 ± 0.0016	91127-35-41
Perchloric acid cation		1190.2	1180.6	± 3.3	kJ/mol	100.4577 ± 0.0015	91712-47-9*0
2-(Cyclopenta-2,4-dien-1-ylidene)ethan-1-ide		132.6	114.5	± 3.4	kJ/mol	91.1310 ± 0.0056	405519-46-2*0
Methyl hydrocarbonate		-532.5	-547.6	± 2.0	kJ/mol	76.0514 ± 0.0019	7456-87-3*4
Hydroxyethenylidene		438.5	434.8	± 3.0	kJ/mol	42.0367 ± 0.0016	70277-80-4*12
Hydrogen iodide			-56.623	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*843
Hydrogen bromide			-118.90	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*821
Nitrato		1290.59	1285.88	± 0.86	kJ/mol	62.00439 ± 0.00090	133057-96-2*0
Hydrogen chloride			-166.337	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*832
Hydroxysilyl anion		-219.2	-227.0	± 2.1	kJ/mol	47.10927 ± 0.00047	78450-47-2*0
Hydroxysilyl anion		-218.9	-226.8	± 2.7	kJ/mol	47.10927 ± 0.00047	78450-47-2*2
2-Aziridinylium		1335.0	1324.0	± 4.8	kJ/mol	42.0594 ± 0.0016	91127-35-411
2-Aziridinide		316.2	304.1	± 3.4	kJ/mol	42.0604 ± 0.0016	111127-93-6*0
Ammonium hydroxide			-366.07	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*816
2-Aziridinide		330.2	318.1	± 4.0	kJ/mol	42.0604 ± 0.0016	111127-93-6*1
Benzvalene cation		1200.3	1184.9	± 2.7	kJ/mol	78.1113 ± 0.0048	81050-63-7*0
Diazanide		249.3	239.3	± 3.1	kJ/mol	31.03785 ± 0.00025	25415-88-7*0
Vinylcyclopentadienylium		1076.9	1059.5	± 3.7	kJ/mol	91.1299 ± 0.0056	146893-89-2*0
Methanediimine cation		1137.8	1135.7	± 2.2	kJ/mol	42.03951 ± 0.00082	1189338-16-6*0
Hydrogen bromide			-117.38	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*817
Methanediimine cation		1139.1	1136.2	± 3.2	kJ/mol	42.03951 ± 0.00082	1189338-16-6*1
Formic acid			-425.16	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*818
Vinylcyclopentadienylium		1099.4	1081.5	± 4.5	kJ/mol	91.1299 ± 0.0056	146893-89-2*1
Isocyanogen chloride cation		1481.0	1482.2	± 3.9	kJ/mol	61.4696 ± 0.0012	956475-91-5*0
Ammonium hydroxide			-366.13	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*817
1-Propen-1-yl-3-ylidene		656.8	653.2	± 2.0	kJ/mol	39.0559 ± 0.0024	84654-90-0*12
1,2-Propadien-1-yl-3-ylidene anion		621.7	629.1	± 1.3	kJ/mol	36.0326 ± 0.0024	109292-47-9*1
Butadienylacetylene		358.9	346.5	± 1.9	kJ/mol	78.1118 ± 0.0048	10420-90-3*0
Tetraoxidanyl		76.7	69.5	± 6.1	kJ/mol	65.0055 ± 0.0012	69696-93-1*1
(3Z)-1,3-Hexadien-5-yne	$C=C/C=C\C#C$	358.9	346.3	± 2.5	kJ/mol	78.1118 ± 0.0048	5222-76-4*0
Divinylacetylene		361.9	350.8	± 1.9	kJ/mol	78.1118 ± 0.0048	821-08-9*0
Tetraoxidanyl		2.1	0.4	± 2.9	kJ/mol	65.0055 ± 0.0012	69696-93-1*0
Divinylacetylene		362.5	351.4	± 2.6	kJ/mol	78.1118 ± 0.0048	821-08-9*1
Biallenyl		410.7	399.6	± 1.5	kJ/mol	78.1118 ± 0.0048	29776-96-3*0
Hydrogen fluoride			-322.71	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*839
Biallenyl		419.6	408.2	± 2.2	kJ/mol	78.1118 ± 0.0048	29776-96-3*2
Propargylallene		431.5	420.1	± 1.4	kJ/mol	78.1118 ± 0.0048	33142-15-3*0
Formic acid			-425.17	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*819
Propargylallene		432.4	420.8	± 2.2	kJ/mol	78.1118 ± 0.0048	33142-15-3*2
Formic acid			-425.17	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*820
Formic acid			-425.19	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*821
3-Methylene-1-penten-4-yne		362.7	350.3	± 2.2	kJ/mol	78.1118 ± 0.0048	6929-96-0*0
3-Methylene-1-penten-4-yne		374.8	362.5	± 2.8	kJ/mol	78.1118 ± 0.0048	6929-96-0*3
1,2,3,5-Hexatetraene		391.8	380.4	± 1.6	kJ/mol	78.1118 ± 0.0048	60239-33-0*0
Methyl hydrocarbonate			-629.1	± 1.4	kJ/mol	76.0514 ± 0.0019	7456-87-3*500
1,2,3,5-Hexatetraene		400.6	389.0	± 2.3	kJ/mol	78.1118 ± 0.0048	60239-33-0*2
(Dimethylamino)methyl anion		190.9	166.7	± 3.3	kJ/mol	58.1029 ± 0.0025	125231-49-4*0
Peroxyhypochlorous acid cation		1030.4	1024.6	± 2.5	kJ/mol	68.4589 ± 0.0011	67952-07-20
Hydrogen isocyanide anion		191.63	191.81	± 0.32	kJ/mol	27.02593 ± 0.00081	96913-22-3*0
Trichlorine cation		1056.6	1055.5	± 1.4	kJ/mol	106.3576 ± 0.0027	33088-85-6*0
Vinyl alcohol cation		778.7	767.7	± 1.3	kJ/mol	44.0520 ± 0.0017	57239-63-1*0
Difluorodiazene		78.5	73.4	± 2.1	kJ/mol	66.01029 ± 0.00014	10578-16-2*0
Methoxyethene		-89.3	-106.6	± 1.1	kJ/mol	58.0791 ± 0.0025	107-25-5*0
Hydrogen bromide			-120.04	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*835
Hydrogen iodide			-36.91	± 0.56	kJ/mol	127.912410 ± 0.000076	10034-85-2*805
Hydrogen chloride			-166.542	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*838
Formic acid			-425.21	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*822
Acetic acid			-484.78	± 0.27	kJ/mol	60.0520 ± 0.0017	64-19-7*1000
Diazene anion		265.6	258.8	± 2.0	kJ/mol	30.02991 ± 0.00020	100429-75-2*1
1-Methylallyl		152.70	136.23	± 0.79	kJ/mol	55.0984 ± 0.0032	15819-46-2*0
Formic acid			-425.22	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*891
Dioxodiazoxane		93.0	88.1	± 1.3	kJ/mol	76.01168 ± 0.00091	122413-35-8*0
1-Methyl-1-propenyl		240.12	224.74	± 0.66	kJ/mol	55.0984 ± 0.0032	71790-71-1*0
Dicarbon monoxide		377.13	381.17	± 0.83	kJ/mol	40.0208 ± 0.0016	12071-23-7*0
1-Methyl-1-propenyl		243.5	227.1	± 1.9	kJ/mol	55.0984 ± 0.0032	71790-71-1*2
Hydrogen iodide			-56.665	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*846
Cyanogen		273.95	289.20	± 0.41	kJ/mol	52.0349 ± 0.0016	460-19-5*500
1-Butenyl		263.48	246.42	± 0.68	kJ/mol	55.0984 ± 0.0032	2669-61-6*0
Diatomic bromine cation		1060.34	1045.39	± 0.23	kJ/mol	159.8075 ± 0.0020	12595-71-0*0
1-Butenyl		263.9	246.7	± 1.9	kJ/mol	55.0984 ± 0.0032	2669-61-6*3
Hydrogen fluoride			-322.16	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*831
1-Ethynyl-2-propyn-1-ylium-1-yl		1537.2	1540.9	± 2.6	kJ/mol	62.0688 ± 0.0040	217822-76-9*0
1-Ethynyl-2-propyn-1-ylidene anion		584.3	589.3	± 3.5	kJ/mol	62.0699 ± 0.0040	217822-70-3*0
1-Ethynyl-2-propyn-1-ylidene		727.1	734.1	± 1.7	kJ/mol	62.0694 ± 0.0040	882068-94-2*0
1-Ethynyl-2-propyn-1-ylidene		787.5	793.0	± 2.1	kJ/mol	62.0694 ± 0.0040	882068-94-2*2
Hydrogen iodide			-51.301	± 0.099	kJ/mol	127.912410 ± 0.000076	10034-85-2*812
Isocyanoamidogen		837.9	835.3	± 2.1	kJ/mol	41.03212 ± 0.00082	947408-73-3*21
Water		-286.275	-285.802	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*499
Isocyanogen anion		386.6	388.7	± 3.3	kJ/mol	52.0354 ± 0.0016	83951-85-30
1,2-Pentadien-4-ynylidene		791.3	794.1	± 2.4	kJ/mol	62.0694 ± 0.0040	195524-67-5*0
2-Cyclopropen-1-ylideneethenylidene		807.2	808.8	± 3.4	kJ/mol	62.0694 ± 0.0040	195524-69-7*0
1-Propen-1-yl-3-ylidene		665.8	662.3	± 2.0	kJ/mol	39.0559 ± 0.0024	84654-90-0*13
Hydrazoic acid anion		309.1	303.2	± 2.3	kJ/mol	43.02871 ± 0.00022	203264-98-6*0
Hydrogen iodide			-56.690	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*850
Formic acid			-425.24	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*825
Hydroperoxyimidogen		111.9	109.0	± 2.8	kJ/mol	47.01348 ± 0.00061	877456-58-1*2
Oxiranylidene		213.5	209.3	± 1.4	kJ/mol	42.0367 ± 0.0016	50983-85-2*0
Hydrodioxonitrogen cation		1130.1	1123.5	± 2.9	kJ/mol	47.01293 ± 0.00061	252986-76-8*0
Hydrazoic acid			261.57	± 0.64	kJ/mol	43.02816 ± 0.00022	7782-79-8*500
2,4-Pentadiynylium		1362.6	1362.6	± 2.6	kJ/mol	63.0768 ± 0.0040	103928-86-5*0
Pentatetraen-1-ide		433.5	434.0	± 3.4	kJ/mol	63.0779 ± 0.0040	849427-36-7*0
1-Ethynyl-2-propynylium		1380.0	1378.7	± 2.6	kJ/mol	63.0768 ± 0.0040	79530-50-0*0
COC vdW		589.7	598.5	± 1.5	kJ/mol	40.0208 ± 0.0016	12071-24-80
Penta-1,4-diyn-3-ide		443.9	443.2	± 3.2	kJ/mol	63.0779 ± 0.0040	553662-77-4*0
Penta-1,4-diyn-3-ide		443.9	443.2	± 3.6	kJ/mol	63.0779 ± 0.0040	553662-77-4*2
Hydrogen fluoride			-322.57	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*837
Ethylamine			-76.79	± 0.65	kJ/mol	45.0837 ± 0.0017	75-04-7*500
Hydrogen iodide			-52.89	± 0.16	kJ/mol	127.912410 ± 0.000076	10034-85-2*814
Hydrobromate ion		-5.5	-12.0	± 4.3	kJ/mol	80.9125 ± 0.0010	85532-97-4*0
Iodoniumyl		1030.73	1028.56	± 0.11	kJ/mol	127.911861 ± 0.000076	12298-17-8*0
Hydrogen fluoride			-322.26	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*832
Hydrogen cyanide anion		129.536	129.058	± 0.087	kJ/mol	27.02593 ± 0.00081	12334-27-9*0
Diisocyanogen anion		456.8	462.5	± 3.6	kJ/mol	52.0354 ± 0.0016	78800-22-30
1-Aminoethyl anion		174.6	157.0	± 3.2	kJ/mol	44.0763 ± 0.0017	59263-55-7*0
1,2-Difluoroethene		-302.96	-309.05	± 0.83	kJ/mol	64.0341 ± 0.0016	1691-13-0*0
Formic acid			-425.27	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*892
Ethylaminylium		1092.4	1077.3	± 2.4	kJ/mol	44.0752 ± 0.0017	54387-08-5*1
Ethylaminylium		1094.9	1079.2	± 2.9	kJ/mol	44.0752 ± 0.0017	54387-08-5*12
Hydrogen iodide			-56.728	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*852
Diisocyanogen cation		1825.3	1828.5	± 3.2	kJ/mol	52.0343 ± 0.0016	78800-21-20
Ammonium hydroxide			-366.24	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*819
Propylidyne		492.7	483.0	± 1.2	kJ/mol	41.0718 ± 0.0024	85056-54-8*0
N-Methylethanamine			-74.9	± 2.3	kJ/mol	59.1103 ± 0.0025	624-78-2*500
Nitrosyl nitrite anion		-103.1	-106.2	± 2.8	kJ/mol	76.01223 ± 0.00091	122413-35-80
Formic acid			-425.30	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*830
Formic acid			-425.30	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*831
2-Methyl-2-propanamine			-150.59	± 0.53	kJ/mol	73.1369 ± 0.0033	75-64-9*590
Diazirinyl		491.09	487.70	± 0.96	kJ/mol	41.03212 ± 0.00082	69967-71-1*0
Formic acid			-425.31	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*832
Hydrogen fluoride			-322.08	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*830
Naphtalene cation		956.93	933.86	± 0.55	kJ/mol	128.1700 ± 0.0080	34512-27-1*0
Naphtalene anion		187.6	164.7	± 3.0	kJ/mol	128.1711 ± 0.0080	34509-91-6*0
Diazoethenylidene cation		1771.1	1773.1	± 3.5	kJ/mol	52.0343 ± 0.0016	130760-10-00
Hydrogen fluoride			-323.39	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*841
3-Diaziridinylidene		521.9	515.0	± 1.5	kJ/mol	42.04006 ± 0.00082	85513-79-7*0
Diazoethenylidene anion		529.6	532.2	± 3.5	kJ/mol	52.0354 ± 0.0016	130760-11-10
Difluorovinylidene anion		-88.2	-87.1	± 2.3	kJ/mol	62.0188 ± 0.0016	107693-92-5*0
Hydroxymethylene cation		971.9	968.3	± 1.4	kJ/mol	30.02543 ± 0.00087	135395-06-1*0
Dibromovinylidene		524.1	513.0	± 4.0	kJ/mol	183.8294 ± 0.0026	261771-36-2*0
Propane		-110.18	-121.16	± 0.66	kJ/mol	44.0956 ± 0.0025	74-98-6*500
Formic acid			-425.31	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*833
3H-diazirin-3-ylidene-methylene		837.3	839.9	± 2.3	kJ/mol	52.0349 ± 0.0016	204253-88-3*0
Formic acid			-425.31	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*895
Formic acid			-425.32	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*834
Formic acid			-425.32	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*835
Fluorovinylidene		298.9	300.1	± 3.1	kJ/mol	44.0277 ± 0.0016	70302-00-0*0
Isocyanomethane			146.4	± 2.2	kJ/mol	41.0520 ± 0.0016	593-75-9*500
Acetic acid			-483.00	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*923
Diazenide		175.7	176.7	± 1.6	kJ/mol	29.02197 ± 0.00016	71004-29-0*0
Fluoroimidogen		232.64	232.64	± 0.80	kJ/mol	33.005143 ± 0.000070	13967-06-1*0
Hydrogen iodide			-54.586	± 0.092	kJ/mol	127.912410 ± 0.000076	10034-85-2*817
Formic acid			-425.32	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*837
Nitrogen atom		700.558	702.461	± 0.022	kJ/mol	14.006740 ± 0.000070	17778-88-0*2
Benzophenone			-24.8	± 1.5	kJ/mol	182.2179 ± 0.0104	119-61-9*590
3-Diaziridinylidene		537.0	530.3	± 2.0	kJ/mol	42.04006 ± 0.00082	85513-79-7*2
Bromovinylidene		471.9	465.9	± 3.8	kJ/mol	104.9333 ± 0.0019	161957-27-3*0
Butadiynylium		1781.3	1787.8	± 3.2	kJ/mol	49.0502 ± 0.0032	76108-67-3*0
Diiodine cation		963.523	960.408	± 0.018	kJ/mol	253.808391 ± 0.000060	28712-14-3*0
Ammonium hydroxide			-366.26	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*820
Formic acid			-425.32	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*838
Formic acid			-425.32	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*839
Dinitrogen tetraoxide		-37.86	-27.01	± 0.19	kJ/mol	92.0111 ± 0.0012	10544-72-6*500
Oxiranylium		901.3	893.3	± 1.4	kJ/mol	43.0441 ± 0.0016	57789-76-1*0
Helium		-0.000	-0.000	± 0.000	kJ/mol	4.0026020 ± 0.0000020	7440-59-7*2
3-Diaziridinylidene cation		1479.7	1473.7	± 2.4	kJ/mol	42.03951 ± 0.00082	85513-79-70
Hydrogen fluoride			-321.82	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*887
Helium dication		7622.839	7622.839	± 0.000	kJ/mol	4.0015048 ± 0.0000020	12587-46-1*0
3-Diaziridinylidene cation		1497.3	1491.8	± 3.1	kJ/mol	42.03951 ± 0.00082	85513-79-72
Difluorophosgene anion		-602.3	-604.2	± 3.3	kJ/mol	66.00745 ± 0.00085	474815-26-4*0
Oxiranyl anion		121.2	113.3	± 1.5	kJ/mol	43.0452 ± 0.0016	72722-59-9*0
Hydrogen chloride			-166.431	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*895
Acetic acid			-484.21	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*819
Dihelium		1761.349	1757.613	± 0.018	kJ/mol	8.0052040 ± 0.0000040	12184-98-4*2
Hydroxymethylene anion		147.2	144.2	± 1.6	kJ/mol	30.02653 ± 0.00087	207914-87-2*0
Hydrohelate		143.256	139.027	± 0.0021	kJ/mol	5.011091 ± 0.000070	12325-01-8*0
Fluoro(fluorooxy)methylene		-134.8	-136.0	± 1.3	kJ/mol	66.00691 ± 0.00085	479587-30-9*0
Hydrogen bromide			-120.06	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*837
Acetic acid			-484.30	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*820
Peroxyhypochlorous acid anion		-32.2	-33.9	± 2.6	kJ/mol	68.4600 ± 0.0011	67952-08-30
Hydrogen iodide			-52.22	± 0.12	kJ/mol	127.912410 ± 0.000076	10034-85-2*813
Hydrogen iodide			-53.37	± 0.17	kJ/mol	127.912410 ± 0.000076	10034-85-2*815
Hydrogen chloride			-162.011	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*816
Iminomethide		237.4	233.6	± 1.8	kJ/mol	28.03387 ± 0.00082	90623-30-6*0
Carbon dianion		1027.5	1033.0	± 4.9	kJ/mol	12.01180 ± 0.00080	50802-47-6*0
Phosgene cation		897.0	896.0	± 1.7	kJ/mol	98.9150 ± 0.0020	73249-38-4*0
Phosgene			-242.78	± 0.24	kJ/mol	98.9155 ± 0.0020	75-44-5*501
Phosgene		-255.48	-242.78	± 0.24	kJ/mol	98.9155 ± 0.0020	75-44-5*502
Fluorine atom nonacation		262121.1	262122.9	± 1.8	kJ/mol	18.99346598 ± 0.00000050	35424-07-8*0
Neon decacation		338828.3	338828.3	± 1.4	kJ/mol	20.17421 ± 0.00060	32218-07-8*0
Neon hydride		215.989	211.755	± 0.024	kJ/mol	21.18764 ± 0.00060	17438-52-7*0
Chloro(chlorooxy)methylene		73.5	73.9	± 3.6	kJ/mol	98.9155 ± 0.0020	479587-31-0*0
Hydroneonate		143.096	142.084	± 0.035	kJ/mol	21.18819 ± 0.00060	75514-98-6*0
Chloro(chlorooxy)methylene		98.	105.	± 15.	kJ/mol	98.9155 ± 0.0020	479587-31-0*1
Hydrogen fluoride			-321.91	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*904
Formic acid			-425.33	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*841
Acetic acid			-484.42	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*821
Krypton dication		3701.124	3701.124	± 0.013	kJ/mol	83.7989 ± 0.1000	18469-91-5*0
Formic acid			-425.34	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*844
Xenon dication		3194.14	3194.14	± 0.36	kJ/mol	131.2889 ± 0.0200	14066-95-6*0
Formic acid			-425.34	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*850
Acetic acid			-482.90	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*801
Tetroxidane		-31.30	-41.80	± 0.64	kJ/mol	66.0135 ± 0.0012	29683-94-1*22
Hydrogen iodide			-56.272	± 0.092	kJ/mol	127.912410 ± 0.000076	10034-85-2*831
Acetic acid			-484.49	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*822
Chlorohydroxymethylene		14.4	11.6	± 3.2	kJ/mol	64.4707 ± 0.0012	147723-60-2*2
Chlorohydroxymethylene		14.0	11.3	± 2.5	kJ/mol	64.4707 ± 0.0012	147723-60-2*0
Cycloprop-2-yliumyl		1225.56	1218.41	± 0.58	kJ/mol	40.0633 ± 0.0024	65812-78-4*0
Sulfur atom hexacation		26947.2	26949.0	± 3.4	kJ/mol	32.0627 ± 0.0060	22537-26-4*0
Chlorine pentafluoride cation		1005.9	996.9	± 3.2	kJ/mol	130.44417 ± 0.00090	478167-78-1*0
Sulfur atom dianion		454.0	455.8	± 3.2	kJ/mol	32.0671 ± 0.0060	18496-25-8*0
Hydrogen bromide			-116.68	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*816
Acetic acid			-482.84	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*802
Disulfur anion		-34.06	-33.12	± 0.52	kJ/mol	64.1325 ± 0.0120	12185-15-8*0
(Chlorooxy)methylene		155.5	155.3	± 3.7	kJ/mol	64.4707 ± 0.0012	331419-80-8*1
Ozone			118.19	± 0.50	kJ/mol	47.99820 ± 0.00090	10028-15-6*1000
Sulfonyl cation		897.01	894.74	± 0.13	kJ/mol	64.0643 ± 0.0060	12439-77-9*0
Sulfur dioxide		-331.5	-320.1	± 1.9	kJ/mol	64.0648 ± 0.0060	7446-09-5*500
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*852
(Chlorooxy)methylene		119.3	117.9	± 2.7	kJ/mol	64.4707 ± 0.0012	331419-80-8*0
Ammonium hydroxide			-366.31	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*821
1-Methoxyethenol		-284.2	-302.7	± 1.1	kJ/mol	74.0785 ± 0.0025	4453-91-2*0
Oxosulfate		-102.66	-101.89	± 0.50	kJ/mol	48.0659 ± 0.0060	12269-52-2*0
Formic acid			-425.36	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*855
Sulfur trioxide cation		847.65	844.74	± 0.68	kJ/mol	80.0637 ± 0.0061	12710-95-1*0
Chloroformyl anion		-356.5	-352.9	± 3.3	kJ/mol	63.4633 ± 0.0012	41976-93-6*0
Sulfite		-273.7	-279.2	± 4.2	kJ/mol	80.0653 ± 0.0061	14265-45-3*0
Hydrogen fluoride			-321.94	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*906
Nitric acid			-193.72	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*803
Sulfur oxide peroxide		-26.0	-30.2	± 2.3	kJ/mol	80.0642 ± 0.0061	175799-68-5*0
Formic acid			-425.39	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*861
Sulfur oxide peroxide		-3.4	-7.1	± 3.0	kJ/mol	80.0642 ± 0.0061	175799-68-5*1
Oxoethylidene		261.1	258.3	± 1.1	kJ/mol	42.0367 ± 0.0016	39920-84-8*0
Nitric oxide			79.213	± 0.078	kJ/mol	30.00614 ± 0.00031	10102-43-9*1000
Sulfuryl dichloride cation		814.1	809.8	± 3.2	kJ/mol	134.9697 ± 0.0063	7791-25-50
Dichlorodioxosulfate		-604.8	-607.4	± 3.5	kJ/mol	134.9707 ± 0.0063	12599-04-1*0
Nitrosodioxaziridine		413.9	408.1	± 3.2	kJ/mol	76.01168 ± 0.00091	132871-99-9*2
Disulfur oxide cation		970.53	969.25	± 0.60	kJ/mol	80.1309 ± 0.0120	135758-60-0*0
Oxothioxosulfate		-231.95	-233.55	± 0.87	kJ/mol	80.1319 ± 0.0120	12143-07-6*0
Hydrogen iodide			-56.318	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*832
2-Oxo-1-ethylium-1-yl		1289.4	1286.8	± 2.5	kJ/mol	42.0361 ± 0.0016	214464-96-7*1
Hydrogen peroxide cation		897.30	890.32	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*0
Hydrogen fluoride			-326.65	± 0.16	kJ/mol	20.006343 ± 0.000070	7664-39-3*852
2-Propenylidene		417.6	410.6	± 1.5	kJ/mol	40.0639 ± 0.0024	19527-08-3*0
Acetic acid			-482.86	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*803
Oxoethylidene anion		86.9	84.2	± 2.1	kJ/mol	42.0372 ± 0.0016	106543-38-8*0
Hydrogen bromide			-119.55	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*892
Sulfoniumyl		992.67	989.76	± 0.18	kJ/mol	34.0813 ± 0.0060	26453-60-1*0
Dihydrogen sulfide ion		108.2	106.9	± 3.2	kJ/mol	34.0824 ± 0.0060	12311-21-6*0
2-Iodoethanol		-131.9	-150.1	± 2.5	kJ/mol	171.9650 ± 0.0017	624-76-0*0
Imidogen		509.34	509.39	± 0.17	kJ/mol	15.014680 ± 0.000099	13774-92-0*2
2-Propenylidene		419.2	411.6	± 2.3	kJ/mol	40.0639 ± 0.0024	19527-08-3*12
Hydrogen iodide			-55.695	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*821
1-Propen-1-yl-3-ylidene		699.3	696.4	± 3.4	kJ/mol	39.0559 ± 0.0024	84654-90-0*2
Iminomethyl		275.80	272.20	± 0.56	kJ/mol	28.03332 ± 0.00082	15691-95-9*0
Hydrogen fluoride			-321.91	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*890
Sulfuric acid cation		400.8	387.8	± 3.2	kJ/mol	98.0789 ± 0.0061	247933-66-0*0
Ethenol		-113.27	-123.62	± 0.37	kJ/mol	44.0526 ± 0.0017	557-75-5*0
Cyanoamidogen		322.73	320.24	± 0.63	kJ/mol	41.03212 ± 0.00082	12347-01-2*0
Cyanogen chloride cation		1326.22	1327.55	± 0.95	kJ/mol	61.4696 ± 0.0012	37612-72-9*0
Hydrogen fluoride			-322.35	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*833
Sulfate			-909.16	± 0.13	kJ/mol	96.0647 ± 0.0061	14808-79-8*800
Cyanoamidogen		652.4	650.3	± 1.2	kJ/mol	41.03212 ± 0.00082	12347-01-2*2
Cyanoaminylium		1363.2	1360.9	± 1.3	kJ/mol	41.03157 ± 0.00082	205443-18-1*0
Sulfuric acid			-880.41	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*815
Sulfuric acid			-882.02	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*816
Sulfuric acid			-883.51	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*817
Sulfuric acid			-884.80	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*818
Sulfuric acid			-885.47	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*819
1,3,5-Hexatriyne cation		1600.9	1605.6	± 2.8	kJ/mol	74.0795 ± 0.0048	61866-06-6*0
Cyanogen bromide cation		1331.3	1325.0	± 1.4	kJ/mol	105.9209 ± 0.0013	34749-77-4*0
Diiodine			23.243	± 0.082	kJ/mol	253.808940 ± 0.000060	7553-56-2*1000
2-Methyliumylidynehydrazin-2-ium-1-ide		1544.2	1542.5	± 1.7	kJ/mol	41.03157 ± 0.00082	947408-73-30
Sulfuric acid			-888.07	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*829
Sulfuric acid			-888.51	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*830
Sulfuric acid			-889.26	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*831
Sulfuric acid			-889.86	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*832
Sulfuric acid			-890.38	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*833
Sulfuric acid			-890.87	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*834
(Iminomethyl)imidogen		420.1	413.3	± 2.9	kJ/mol	42.04006 ± 0.00082	87570-07-8*0
Hydrogen iodide			-56.356	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*833
Sulfuric acid			-891.94	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*838
1,3,5-Hexatriynylium		1913.8	1922.8	± 8.2	kJ/mol	73.0716 ± 0.0048	81932-75-4*1
Nitric acid			-200.27	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*807
(Iminomethyl)imidogen		430.4	423.5	± 3.3	kJ/mol	42.04006 ± 0.00082	87570-07-8*12
Sulfuric acid			-897.00	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*843
Diazirenide		504.8	501.3	± 2.9	kJ/mol	41.03267 ± 0.00082	130614-84-5*1
Acetic acid			-482.95	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*804
Trioxygen difluoride		113.6	107.8	± 2.0	kJ/mol	85.99501 ± 0.00090	16829-28-0*2
Sulfuric acid			-903.21	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*852
Sulfuric acid			-905.91	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*855
Sulfuric acid			-907.21	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*861
Acetic acid			-484.53	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*891
Oxonium			-285.801	± 0.022	kJ/mol	19.02267 ± 0.00037	13968-08-6*800
Hydrogen chloride			-165.187	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*822
Nitric acid			-201.93	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*809
Dioxohydrazine		192.3	188.7	± 1.8	kJ/mol	60.01228 ± 0.00062	16824-89-8*1
Water anion		-50.1	-53.0	± 4.3	kJ/mol	18.01583 ± 0.00033	12259-30-2*0
Propene		7.74	4.04	± 0.82	kJ/mol	42.0797 ± 0.0024	115-07-1*500
Acetic acid			-484.66	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*892
Chlorine atom heptacation		39520.	39522.	± 11.	kJ/mol	35.44886 ± 0.00090	22537-27-5*0
Hydrogen iodide			-56.377	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*895
Hydrogen bromide			-102.20	± 0.13	kJ/mol	80.9119 ± 0.0010	10035-10-6*805
Methoxyethene		-81.9	-99.0	± 2.4	kJ/mol	58.0791 ± 0.0025	107-25-5*1
Hydrogen iodide			-55.854	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*891
Nitric acid			-203.75	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*812
Ammonium hydroxide			-366.33	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*891
Hydrogen chloride			-166.681	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*841
Nitric acid			-204.98	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*815
Hydrogen fluoride			-322.43	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*834
Ketene		-45.22	-48.39	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*22
2-Methanidylidynehydrazin-2-ium-1-ide		281.9	279.1	± 1.4	kJ/mol	41.03267 ± 0.00082	947408-74-40
1-Hydroxy-2-propanone		-354.40	-373.73	± 0.83	kJ/mol	74.0785 ± 0.0025	116-09-6*0
Nitric acid			-205.67	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*817
Nitrosodioxaziridine		415.3	409.5	± 2.8	kJ/mol	76.01168 ± 0.00091	132871-99-9*3
Cyanoamidogen anion		391.7	389.9	± 1.8	kJ/mol	41.03267 ± 0.00082	67131-47-9*1
Oxonium		605.95	599.14	± 0.17	kJ/mol	19.02267 ± 0.00037	13968-08-6*1
Sulfur hydroxide oxide		-474.5	-483.5	± 1.6	kJ/mol	97.0715 ± 0.0061	12337-07-4*0
Sulfur hydroxide oxide		-473.7	-483.0	± 2.5	kJ/mol	97.0715 ± 0.0061	12337-07-4*2
Sulfur hydroxide oxide cation		658.6	648.3	± 3.4	kJ/mol	97.0710 ± 0.0061	12337-07-40
Sulfur hydroxide oxide cation		663.1	652.2	± 3.9	kJ/mol	97.0710 ± 0.0061	12337-07-41
Cyanoamidogen anion		392.4	390.4	± 6.2	kJ/mol	41.03267 ± 0.00082	67131-47-9*11
Hydrogen iodide			-56.761	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*855
Sulfurous acid		-507.1	-517.7	± 1.3	kJ/mol	82.0801 ± 0.0061	7782-99-2*1
Sulfurous acid		-497.5	-507.5	± 1.4	kJ/mol	82.0801 ± 0.0061	7782-99-2*3
Carbon trianion		1813.2	1818.6	± 5.9	kJ/mol	12.01235 ± 0.00080	50802-48-7*0
Hydrogen iodide			-55.803	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*822
Acetic acid			-483.03	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*805
Sulfite			-635.24	± 0.15	kJ/mol	80.0653 ± 0.0061	14265-45-3*800
Sulfurous acid			-610.09	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*828
Sulfurous acid			-610.81	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*829
Sulfurous acid			-611.35	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*830
Sulfurous acid			-611.78	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*908
Sulfurous acid			-612.15	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*831
Sulfurous acid			-612.75	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*832
Sulfurous acid			-613.26	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*833
Sulfurous acid			-614.20	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*836
Sulfurous acid			-614.89	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*839
Sulfurous acid			-615.98	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*840
Sulfurous acid			-616.73	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*841
Sulfurous acid			-617.78	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*842
Sulfurous acid			-618.19	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*899
Sulfurous acid			-618.52	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*843
Sulfurous acid			-619.11	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*844
Sulfurous acid			-620.08	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*847
Sulfurous acid			-620.67	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*850
Sulfonic acid		-482.2	-494.8	± 1.4	kJ/mol	82.0801 ± 0.0061	7782-99-20
Hydrogen iodide			-56.778	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*861
2-Ethylidenedioxidan-2-ium-1-ide		51.25	37.84	± 0.54	kJ/mol	60.0520 ± 0.0017	68941-70-8*0
Hydrogen iodide			-47.72	± 0.32	kJ/mol	127.912410 ± 0.000076	10034-85-2*809
3,3-Dioxidedioxathiirane		-257.1	-265.2	± 1.4	kJ/mol	96.0636 ± 0.0061	1177730-84-5*0
Hydrogen chloride			-161.149	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*815
Acetic acid			-483.13	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*807
Sulfur tetraoxide		-228.2	-235.1	± 2.0	kJ/mol	96.0636 ± 0.0061	12772-98-4*0
Oxoiodonium		1065.2	1063.2	± 1.5	kJ/mol	142.90332 ± 0.00030	81182-81-2*0
Sulfur tetraoxide		-228.2	-235.1	± 2.0	kJ/mol	96.0636 ± 0.0061	12772-98-4*1
Sulfur tetraoxide		-163.8	-169.5	± 2.9	kJ/mol	96.0636 ± 0.0061	12772-98-4*2
Hydrogen bromide			-118.02	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*818
Ethoxyethene		-117.7	-136.2	± 1.5	kJ/mol	72.1057 ± 0.0033	109-92-2*0
Sulfur tetraoxide		-155.5	-164.4	± 4.0	kJ/mol	96.0636 ± 0.0061	12772-98-4*23
Cyclopropane		41.51	35.83	± 0.47	kJ/mol	42.0797 ± 0.0024	75-19-4*500
Diazomethyl		467.86	465.31	± 0.68	kJ/mol	41.03212 ± 0.00082	20813-32-5*0
Acetic acid			-484.72	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*830
Ethylideneoxoniumyloxy		950.9	939.1	± 2.2	kJ/mol	60.0514 ± 0.0017	1427752-17-7*0
Ethoxyethene		-111.2	-135.1	± 2.3	kJ/mol	72.1057 ± 0.0033	109-92-2*21
Ethoxyethene		-110.7	-132.9	± 2.6	kJ/mol	72.1057 ± 0.0033	109-92-2*1
Diazomethyl		652.8	649.9	± 1.3	kJ/mol	41.03212 ± 0.00082	20813-32-5*2
Dioxoperoxysulfate dianion		-209.1	-214.8	± 2.1	kJ/mol	96.0647 ± 0.0061	14808-79-80
Dioxoperoxysulfate dianion		-186.5	-192.2	± 2.9	kJ/mol	96.0647 ± 0.0061	14808-79-82
Hydrogen fluoride			-322.64	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*838
Methanethiol cation		901.89	891.85	± 0.46	kJ/mol	48.1079 ± 0.0061	53369-41-8*0
Vinyl hydroperoxide		-26.04	-36.80	± 0.69	kJ/mol	60.0520 ± 0.0017	66998-78-5*0
Hydrogen fluoride			-328.57	± 0.16	kJ/mol	20.006343 ± 0.000070	7664-39-3*855
Benzylidene		473.0	457.8	± 1.3	kJ/mol	90.1225 ± 0.0056	3101-08-4*0
Thioformaldehyde anion		75.8	72.8	± 2.7	kJ/mol	46.0931 ± 0.0061	71928-47-7*0
Thioformaldehyde		121.3	117.6	± 2.0	kJ/mol	46.0926 ± 0.0061	865-36-1*0
Thioformaldehyde		294.9	292.3	± 2.0	kJ/mol	46.0926 ± 0.0061	865-36-1*3
Nitrosodioxaziridine		413.6	408.2	± 1.8	kJ/mol	76.01168 ± 0.00091	132871-99-9*0
Ethanethiol cation		867.12	850.96	± 0.59	kJ/mol	62.1345 ± 0.0062	69762-64-7*0
Carbon		1114.956	1120.102	± 0.040	kJ/mol	12.01070 ± 0.00080	7440-44-0*3
Diazomethyl		653.0	650.0	± 2.3	kJ/mol	41.03212 ± 0.00082	20813-32-5*21
Dimethyl sulfide cation		817.86	802.11	± 0.48	kJ/mol	62.1345 ± 0.0062	34480-65-4*0
Hydrogen bromide			-120.24	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*957
Diazomethylium		1395.8	1394.1	± 1.3	kJ/mol	41.03157 ± 0.00082	271249-81-1*0
Bicyclo[1.1.0]buta-1,3-diene-2,4-diyl		1133.1	1140.9	± 2.7	kJ/mol	48.0428 ± 0.0032	12184-80-4*1
Difluoroaminylium		1157.82	1154.93	± 0.71	kJ/mol	52.002998 ± 0.000070	31685-31-1*0
Ammonium hydroxide			-366.35	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*825
Hydrogen bromide			-120.08	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*838
Hydroxyamidogen		101.27	94.43	± 0.83	kJ/mol	32.02202 ± 0.00034	13940-32-4*0
Carbon disulfide cation		1088.28	1090.03	± 0.68	kJ/mol	76.1422 ± 0.0120	12539-80-9*0
Sulfidocarbonothioyl		73.5	75.0	± 3.3	kJ/mol	76.1432 ± 0.0120	12122-00-8*0
Fulvenallene		368.7	354.4	± 1.1	kJ/mol	90.1225 ± 0.0056	27041-32-3*0
Chlorine pentafluoride anion		-619.1	-622.6	± 4.3	kJ/mol	130.44526 ± 0.00090	184851-42-1*0
Carbon monosulfide cation		1371.34	1374.57	± 0.78	kJ/mol	44.0762 ± 0.0061	12351-95-0*0
Carbon monosulfide anion		259.1	262.9	± 2.2	kJ/mol	44.0772 ± 0.0061	12121-99-2*0
Acetic acid			-483.17	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*808
Fluoronitrate		211.3	211.5	± 2.8	kJ/mol	33.005692 ± 0.000070	33088-90-3*0
Platinum atom anion		358.4	358.9	± 1.7	kJ/mol	195.0785 ± 0.0020	40817-31-0*0
Tetrafluorohydrazine anion		-184.5	-190.0	± 3.3	kJ/mol	104.00764 ± 0.00014	39775-43-4*2
Platinum dimer cation		1661.0	1659.6	± 4.3	kJ/mol	390.1555 ± 0.0040	73146-08-4*0
Platinum dimer anion		640.3	639.8	± 3.9	kJ/mol	390.1565 ± 0.0040	153298-77-2*0
Ammonium hydroxide			-365.30	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*806
Acetic acid			-483.21	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*809
Acetic acid			-484.75	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*831
Hydrogen atom		-37.0	-40.2	± 1.1	kJ/mol	1.007940 ± 0.000070	12385-13-6*1001000
Nitrogen atom heptacation		143853.27	143855.13	± 0.23	kJ/mol	14.002900 ± 0.000070	40549-08-4*0
Acetic acid			-483.27	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*811
Isocyanoamidogen		489.7	487.7	± 1.2	kJ/mol	41.03212 ± 0.00082	947408-73-3*0
Hydrogen fluoride			-322.50	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*835
Hydrogen atom		-32.	-34.	± 20.	kJ/mol	1.007940 ± 0.000070	12385-13-6*1002000
Isocyanoamidogen		828.3	825.6	± 1.3	kJ/mol	41.03212 ± 0.00082	947408-73-3*2
Benzocyclopropene		396.0	379.6	± 1.5	kJ/mol	90.1225 ± 0.0056	4646-69-9*0
Hydroxyformyl		-181.14	-183.68	± 0.40	kJ/mol	45.0174 ± 0.0010	2564-86-5*0
Water		-286.275	-292.715	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*509
Hydroxyformyl anion		-319.53	-321.39	± 0.56	kJ/mol	45.0180 ± 0.0010	78944-70-4*0
Hydrogen fluoride			-322.12	± 0.10	kJ/mol	20.006343 ± 0.000070	7664-39-3*908
Argon cation		1520.571	1520.580	± 0.000	kJ/mol	39.94745 ± 0.00100	14791-69-6*0
Argon dimer cation		1393.760	1391.173	± 0.018	kJ/mol	79.8955 ± 0.0020	17596-58-6*0
Argon atom dication		4186.429	4186.468	± 0.013	kJ/mol	39.94690 ± 0.00100	15056-24-3*0
Argon dimer		-1.013	-6.347	± 0.0051	kJ/mol	79.8960 ± 0.0020	12595-59-4*0
Argon anion		25.	25.	± 28.	kJ/mol	39.94855 ± 0.00100	16544-90-4*1
Neon anion		13.	13.	± 29.	kJ/mol	20.18025 ± 0.00060	20205-95-2*0
Argon anion		25.	25.	± 28.	kJ/mol	39.94855 ± 0.00100	16544-90-4*0
Helium anion		51.	51.	± 130.	kJ/mol	4.0031506 ± 0.0000020	14452-58-5*1
Helium anion		51.	51.	± 130.	kJ/mol	4.0031506 ± 0.0000020	14452-58-5*0
Dihelium		-0.000	-6.197	± 0.000	kJ/mol	8.0052040 ± 0.0000040	12184-98-4*3
Dihelium		-0.000	-6.197	± 0.000	kJ/mol	8.0052040 ± 0.0000040	12184-98-4*0
Dichlorine		-30.21	-18.49	± 0.51	kJ/mol	70.9054 ± 0.0018	7782-50-5*500
Helium anion		1868.42	1868.42	± 0.19	kJ/mol	4.0031506 ± 0.0000020	14452-58-5*2
Helium			-0.702	± 0.092	kJ/mol	4.0026020 ± 0.0000020	7440-59-7*1000
Dinitrogen			-10.30	± 0.32	kJ/mol	28.01348 ± 0.00014	7727-37-9*1000
Dihydrogen			-4.104	± 0.059	kJ/mol	2.01588 ± 0.00014	1333-74-0*1000
Neon			-3.883	± 0.092	kJ/mol	20.17970 ± 0.00060	7440-01-9*1000
Dioxygen			-11.963	± 0.041	kJ/mol	31.99880 ± 0.00060	7782-44-7*1000
Argon anion		1111.116	1111.116	± 0.098	kJ/mol	39.94855 ± 0.00100	16544-90-4*2
Argon			-12.249	± 0.092	kJ/mol	39.94800 ± 0.00100	7440-37-1*1000
Krypton anion		110.	110.	± 350.	kJ/mol	83.8005 ± 0.1000	20205-93-0*0
Krypton			-15.65	± 0.11	kJ/mol	83.8000 ± 0.1000	7439-90-9*1000
Xenon			-19.404	± 0.092	kJ/mol	131.2900 ± 0.0200	7440-63-3*1000
Radon cation		1037.07	1037.07	± 0.61	kJ/mol	221.9995 ± 0.1000	22541-65-7*0
Radon			-21.33	± 0.96	kJ/mol	222.0000 ± 0.1000	10043-92-2*1000
Hydron		0	0	exact		1.007391 ± 0.000070	12408-02-5*800

References

1		B. Ruscic, R. E. Pinzon, M. L. Morton, G. von Laszewski, S. Bittner, S. G. Nijsure, K. A. Amin, M. Minkoff, and A. F. Wagner, Introduction to Active Thermochemical Tables: Several "Key" Enthalpies of Formation Revisited. J. Phys. Chem. A 108, 9979-9997 (2004) [DOI: 10.1021/jp047912y]
2		B. Ruscic, R. E. Pinzon, G. von Laszewski, D. Kodeboyina, A. Burcat, D. Leahy, D. Montoya, and A. F. Wagner, Active Thermochemical Tables: Thermochemistry for the 21^st Century. J. Phys. Conf. Ser. 16, 561-570 (2005) [DOI: 10.1088/1742-6596/16/1/078]
3		B. Ruscic and D. H. Bross, Active Thermochemical Tables (ATcT) values based on ver. 1.202 of the Thermochemical Network (2024); available at ATcT.anl.gov
4		B. Ruscic and D. H. Bross Accurate and Reliable Thermochemistry by Data Analysis of Complex Thermochemical Networks using Active Thermochemical Tables: The Case of Glycine Thermochemistry Faraday Discuss. (in press) (2024) [DOI: 10.1039/D4FD00110A]
5		B. Ruscic, Uncertainty Quantification in Thermochemistry, Benchmarking Electronic Structure Computations, and Active Thermochemical Tables. Int. J. Quantum Chem. 114, 1097-1101 (2014) [DOI: 10.1002/qua.24605]
6		B. Ruscic and D. H. Bross, Thermochemistry Computer Aided Chem. Eng. 45, 3-114 (2019) [DOI: 10.1016/B978-0-444-64087-1.00001-2]

Formula

The aggregate state is given in parentheses following the formula, such as: g - gas-phase, cr - crystal, l - liquid, etc.

Uncertainties

The listed uncertainties correspond to estimated 95% confidence limits, as customary in thermochemistry (see, for example, Ruscic [5] and Ruscic and Bross[6]).
Note that an uncertainty of ± 0.000 kJ/mol indicates that the estimated uncertainty is < ± 0.000₅ kJ/mol.

Website Functionality Credits

The reorganization of the website was developed and implemented by David H. Bross (ANL).
The find function is based on the complete Species Dictionary entries for the appropriate version of the ATcT TN.
The molecule images are rendered by Indigo-depict.
The XYZ renderings are based on Jmol: an open-source Java viewer for chemical structures in 3D. http://www.jmol.org/.

Acknowledgement

This work was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences and Biosciences under Contract No. DE-AC02-06CH11357.