ATcT [1, 2] enthalpies of formation based on version 1.130 of the Thermochemical Network [3]

Below is a list of 0 K and 298.15 K enthalpies of formation for all 3003 species included in version 1.130 (as of 08/01/2023).
This version of ATcT results[4] was generated by additional expansion of version 1.128 [5,6] to include with the calculations provided in reference [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		711.396	716.881	± 0.041	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		-66.549	-74.518	± 0.044	kJ/mol	16.04246 ± 0.00085	74-82-8*0
Nitrogen atom		470.577	472.440	± 0.023	kJ/mol	14.006740 ± 0.000070	17778-88-0*0
Water		-286.272	-285.800	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*500
Carbon dioxide		-393.110	-393.476	± 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		-238.902	-241.805	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*0
Ethane		-68.38	-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		77.253	79.359	± 0.017	kJ/mol	18.99840320 ± 0.00000050	14762-94-8*0
Ethylene		60.89	52.38	± 0.11	kJ/mol	28.0532 ± 0.0016	74-85-1*0
Methyl		149.874	146.473	± 0.050	kJ/mol	15.03452 ± 0.00083	2229-07-4*0
Propane		-82.71	-104.99	± 0.16	kJ/mol	44.0956 ± 0.0025	74-98-6*0
Methanol		-190.03	-200.92	± 0.15	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		117.911	111.848	± 0.056	kJ/mol	79.90400 ± 0.00100	10097-32-2*0
Hydroxyl		37.279	37.518	± 0.022	kJ/mol	17.00734 ± 0.00031	3352-57-6*0
Formaldehyde		-105.392	-109.232	± 0.095	kJ/mol	30.02598 ± 0.00087	50-00-0*0
Acetylene		228.88	228.32	± 0.12	kJ/mol	26.0373 ± 0.0016	74-86-2*0
Carbon monoxide		-113.800	-110.520	± 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
Ethanol		-217.31	-235.03	± 0.20	kJ/mol	46.0684 ± 0.0017	64-17-5*0
Hydrogen fluoride		-272.679	-272.726	± 0.019	kJ/mol	20.006343 ± 0.000070	7664-39-3*0
Ethyl		131.43	120.68	± 0.20	kJ/mol	29.0611 ± 0.0016	2025-56-1*0
Hydrogen cyanide		129.682	129.298	± 0.088	kJ/mol	27.02538 ± 0.00081	74-90-8*0
Benzene		100.71	83.20	± 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		34.86	20.02	± 0.18	kJ/mol	42.0797 ± 0.0024	115-07-1*0
Hydrogen bromide		-27.85	-35.69	± 0.13	kJ/mol	80.9119 ± 0.0010	10035-10-6*0
Nitric oxide		90.639	91.143	± 0.066	kJ/mol	30.00614 ± 0.00031	10102-43-9*0
Acetaldehyde		-155.00	-165.53	± 0.23	kJ/mol	44.0526 ± 0.0017	75-07-0*0
Propyne		192.66	185.51	± 0.21	kJ/mol	40.0639 ± 0.0024	74-99-7*0
Chloromethane		-74.75	-82.68	± 0.16	kJ/mol	50.4872 ± 0.0012	74-87-3*0
Acetone		-200.00	-216.94	± 0.26	kJ/mol	58.0791 ± 0.0025	67-64-1*0
Hydroxyde		-139.063	-139.030	± 0.022	kJ/mol	17.00789 ± 0.00031	14280-30-9*0
Dioxidanyl		15.09	12.18	± 0.14	kJ/mol	33.00674 ± 0.00060	3170-83-0*0
Methylamine		-6.46	-21.16	± 0.22	kJ/mol	31.05714 ± 0.00088	74-89-5*0
Nitrogen dioxide		36.878	34.071	± 0.066	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
Allene		197.39	189.93	± 0.23	kJ/mol	40.0639 ± 0.0024	463-49-0*0
Fluoromethane		-227.45	-235.48	± 0.23	kJ/mol	34.03292 ± 0.00083	593-53-3*0
Hydrogen iodide		28.643	26.467	± 0.036	kJ/mol	127.912410 ± 0.000076	10034-85-2*0
Silicon		450.38	454.72	± 0.59	kJ/mol	28.08550 ± 0.00030	7440-21-3*0
Hydrogen peroxide		-129.417	-135.403	± 0.058	kJ/mol	34.01468 ± 0.00062	7722-84-1*0
Methylene		391.050	391.596	± 0.095	kJ/mol	14.02658 ± 0.00081	2465-56-7*1
n-Butane		-98.35	-125.66	± 0.23	kJ/mol	58.1222 ± 0.0033	106-97-8*0
Toluene		73.33	50.05	± 0.31	kJ/mol	92.1384 ± 0.0056	108-88-3*0
Silane		42.68	33.06	± 0.65	kJ/mol	32.11726 ± 0.00041	7803-62-5*0
Methylene		428.71	429.12	± 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
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*839
Nitrilomethyl		436.73	440.02	± 0.14	kJ/mol	26.01744 ± 0.00080	2074-87-5*0
Ketene		-45.36	-48.42	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*0
Fluoride		-250.912	-249.127	± 0.017	kJ/mol	18.99895178 ± 0.00000050	16984-48-8*0
Hydrogen chloride			-165.756	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*828
Acetonitrile		81.15	74.09	± 0.24	kJ/mol	41.0520 ± 0.0016	75-05-8*0
Bromomethane		-20.89	-36.29	± 0.16	kJ/mol	94.9385 ± 0.0013	74-83-9*0
1,3-Butadiene		125.53	111.06	± 0.31	kJ/mol	54.0904 ± 0.0032	106-99-0*0
Hydrogen iodide			-56.646	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*844
Methoxy		28.93	21.56	± 0.27	kJ/mol	31.03392 ± 0.00088	2143-68-2*0
Formic acid		-371.03	-378.35	± 0.21	kJ/mol	46.0254 ± 0.0010	64-18-6*1
Acetic acid			-484.66	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*828
Hydrogen bromide			-120.60	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*842
iso-Butane		-105.90	-134.50	± 0.28	kJ/mol	58.1222 ± 0.0033	75-28-5*0
Formic acid			-425.30	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*828
Hydrogen fluoride			-303.21	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*590
Methoxide		-122.46	-130.19	± 0.27	kJ/mol	31.03447 ± 0.00088	3315-60-4*0
Hypochlorous acid		-73.839	-76.779	± 0.024	kJ/mol	52.46004 ± 0.00095	7790-92-3*0
Amidogen		188.92	186.03	± 0.11	kJ/mol	16.02262 ± 0.00016	13770-40-6*0
Acetic acid		-418.53	-432.70	± 0.36	kJ/mol	60.0520 ± 0.0017	64-19-7*1
Phenyl		352.10	338.74	± 0.63	kJ/mol	77.1039 ± 0.0048	2396-01-2*0
Formyl		41.378	41.752	± 0.095	kJ/mol	29.01804 ± 0.00086	2597-44-6*0
Tetrafluoromethane		-927.79	-933.76	± 0.23	kJ/mol	88.00431 ± 0.00080	75-73-0*0
Sulfur dioxide		-294.14	-296.68	± 0.13	kJ/mol	64.0648 ± 0.0060	7446-09-5*0
Dibromine		45.67	30.87	± 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
Propargyl		354.02	351.43	± 0.32	kJ/mol	39.0559 ± 0.0024	2932-78-7*0
Allyl		179.87	168.15	± 0.33	kJ/mol	41.0718 ± 0.0024	1981-80-2*0
Hydroxymethyl		-10.36	-16.66	± 0.28	kJ/mol	31.03392 ± 0.00088	2597-43-5*0
Chloroethane		-96.95	-111.54	± 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
Methanimine		96.38	88.47	± 0.34	kJ/mol	29.04126 ± 0.00083	2053-29-4*0
Ethynyl		563.75	567.86	± 0.15	kJ/mol	25.0293 ± 0.0016	2122-48-7*0
Ethylamine		-28.06	-49.83	± 0.45	kJ/mol	45.0837 ± 0.0017	75-04-7*0
Fluoroform		-689.35	-696.30	± 0.38	kJ/mol	70.01385 ± 0.00080	75-46-7*0
Oxomethylium		827.754	827.170	± 0.095	kJ/mol	29.01749 ± 0.00086	17030-74-9*0
Methyl hydroperoxide		-114.89	-127.71	± 0.43	kJ/mol	48.0413 ± 0.0010	3031-73-0*0
Cyclopropane		71.03	53.90	± 0.32	kJ/mol	42.0797 ± 0.0024	75-19-4*0
Ethenol		-113.38	-124.50	± 0.38	kJ/mol	44.0526 ± 0.0017	557-75-5*1
Acetyl		-3.48	-10.05	± 0.30	kJ/mol	43.0446 ± 0.0016	3170-69-2*0
Trifluoromethyl		-464.94	-467.73	± 0.43	kJ/mol	69.00591 ± 0.00080	2264-21-3*0
Ethylium		914.98	902.91	± 0.30	kJ/mol	29.0606 ± 0.0016	14936-94-8*0
Phenol		-74.70	-93.30	± 0.63	kJ/mol	94.1112 ± 0.0048	108-95-2*0
Tetrachloromethane		-89.39	-91.56	± 0.41	kJ/mol	153.8215 ± 0.0037	56-23-5*0
Formamide		-178.63	-188.99	± 0.34	kJ/mol	45.04066 ± 0.00088	75-12-7*0
Oxonium		605.88	599.13	± 0.17	kJ/mol	19.02267 ± 0.00037	13968-08-6*0
Bromide		-206.626	-212.689	± 0.056	kJ/mol	79.90455 ± 0.00100	24959-67-9*0
Hypobromous acid		-51.36	-61.83	± 0.48	kJ/mol	96.9113 ± 0.0010	13517-11-8*0
iso-Propyl		105.54	88.67	± 0.40	kJ/mol	43.0877 ± 0.0024	2025-55-0*0
Cyanoacetylene		372.19	373.93	± 0.59	kJ/mol	51.0468 ± 0.0024	1070-71-9*0
Benzaldehyde		-19.79	-37.59	± 0.77	kJ/mol	106.1219 ± 0.0056	100-52-7*0
Chlorooxidanyl		101.124	101.716	± 0.035	kJ/mol	51.45210 ± 0.00095	14989-30-1*0
Iodide		-187.995	-188.396	± 0.0021	kJ/mol	126.905019 ± 0.000030	20461-54-5*0
Methylidyne		592.832	596.166	± 0.095	kJ/mol	13.01864 ± 0.00080	3315-37-5*0
Methylperoxy		22.53	13.08	± 0.35	kJ/mol	47.0333 ± 0.0010	2143-58-0*0
n-Propyl		118.39	100.98	± 0.44	kJ/mol	43.0877 ± 0.0024	2143-61-5*0
Dioxymethyl	$[O-]\[O+]=C$	111.75	104.75	± 0.61	kJ/mol	46.0254 ± 0.0010	56077-92-0*0
Hydroxyformyl		-181.15	-184.12	± 0.40	kJ/mol	45.0174 ± 0.0010	2564-86-5*1
Vinyl chloride		29.38	21.79	± 0.27	kJ/mol	62.4979 ± 0.0018	75-01-4*0
Nitric acid		-124.48	-134.19	± 0.17	kJ/mol	63.01288 ± 0.00091	7697-37-2*0
Imidogen		358.74	358.79	± 0.16	kJ/mol	15.014680 ± 0.000099	13774-92-0*0
1-Hydroxyethyl		-42.87	-56.30	± 0.46	kJ/mol	45.0605 ± 0.0017	2348-46-1*1
Vinylacetylene		296.24	289.48	± 0.56	kJ/mol	52.0746 ± 0.0032	689-97-4*0
Ethoxide		-163.88	-178.82	± 0.44	kJ/mol	45.0610 ± 0.0017	16331-64-9*0
Methoxymethane		-166.50	-184.01	± 0.37	kJ/mol	46.0684 ± 0.0017	115-10-6*0
Sulfur trioxide		-389.74	-395.48	± 0.24	kJ/mol	80.0642 ± 0.0061	7446-11-9*0
Methylium		1099.347	1095.403	± 0.045	kJ/mol	15.03397 ± 0.00083	14531-53-4*0
Isocyanic acid		-115.94	-118.93	± 0.28	kJ/mol	43.02478 ± 0.00086	75-13-8*0
Cyanamide		141.53	135.52	± 0.78	kJ/mol	42.04006 ± 0.00082	420-04-2*0
Difluorophosgene		-603.37	-606.47	± 0.40	kJ/mol	66.00691 ± 0.00085	353-50-4*0
Hypofluorous acid		-84.37	-87.27	± 0.19	kJ/mol	36.00574 ± 0.00031	14034-79-8*0
Oxygen atom anion		105.868	108.097	± 0.0021	kJ/mol	15.99995 ± 0.00030	14337-01-0*0
Nitric acid			-206.25	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*839
Iodomethane		24.39	14.86	± 0.18	kJ/mol	141.93899 ± 0.00083	74-88-4*0
Isobutene		4.16	-16.90	± 0.37	kJ/mol	56.1063 ± 0.0032	115-11-7*0
N-Methylenemethanamine		94.55	79.64	± 0.67	kJ/mol	43.0678 ± 0.0016	1761-67-7*0
Dichloromethane		-86.94	-93.79	± 0.33	kJ/mol	84.9320 ± 0.0020	75-09-2*0
1,3-Butadiyne		458.31	460.03	± 0.56	kJ/mol	50.0587 ± 0.0032	460-12-8*0
Chlorobenzene		67.26	52.30	± 0.61	kJ/mol	112.5566 ± 0.0049	108-90-7*0
Hydrogen chloride			-166.449	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*834
Isocyanomethane		183.86	177.31	± 0.46	kJ/mol	41.0520 ± 0.0016	593-75-9*0
Ethynide		277.31	280.72	± 0.19	kJ/mol	25.0299 ± 0.0016	29075-95-4*0
1,2-Butadiene		176.01	162.51	± 0.42	kJ/mol	54.0904 ± 0.0032	590-19-2*0
Dimethylamine		4.60	-17.04	± 0.47	kJ/mol	45.0837 ± 0.0017	124-40-3*0
Trimethylsilane		-125.8	-151.9	± 1.5	kJ/mol	74.1970 ± 0.0025	993-07-7*0
Hydride		143.264	145.228	± 0.000	kJ/mol	1.008489 ± 0.000070	12184-88-2*0
Oxirane		-39.93	-52.46	± 0.36	kJ/mol	44.0526 ± 0.0017	75-21-8*0
Trihydrogen cation		1110.304	1106.696	± 0.013	kJ/mol	3.02327 ± 0.00021	28132-48-1*0
Cyanogen chloride		135.14	135.83	± 0.43	kJ/mol	61.4701 ± 0.0012	506-77-4*0
Phenide		244.28	230.86	± 0.38	kJ/mol	77.1044 ± 0.0048	30922-78-2*0
Cyclopropene		292.41	283.68	± 0.43	kJ/mol	40.0639 ± 0.0024	2781-85-3*0
2-Hydroxyethyl		-13.07	-26.33	± 0.49	kJ/mol	45.0605 ± 0.0017	4422-54-2*1
Methyl formate		-346.97	-360.01	± 0.65	kJ/mol	60.0520 ± 0.0017	107-31-3*1
Acrolein		-55.19	-65.58	± 0.64	kJ/mol	56.0633 ± 0.0024	107-02-8*1
Sulfuric acid			-887.46	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*828
Sulfurous acid			-619.42	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*898
Ammonium		643.03	631.71	± 0.20	kJ/mol	18.03795 ± 0.00029	14798-03-9*0
Methylamidogen		187.96	177.31	± 0.40	kJ/mol	30.04920 ± 0.00085	15622-51-2*0
Cyanide		63.978	67.264	± 0.092	kJ/mol	26.01799 ± 0.00080	57-12-5*0
2-Butyne		159.41	146.44	± 0.46	kJ/mol	54.0904 ± 0.0032	503-17-3*0
Cyclopentadiene		151.43	134.31	± 0.60	kJ/mol	66.1011 ± 0.0040	542-92-7*0
Difluoromethane		-443.37	-450.98	± 0.33	kJ/mol	52.02339 ± 0.00081	75-10-5*0
Silyl		204.78	199.30	± 0.85	kJ/mol	31.10932 ± 0.00037	13765-44-1*0
Oxygen difluoride		26.82	24.56	± 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
Nitrosyl hydride		109.95	106.98	± 0.11	kJ/mol	31.01408 ± 0.00032	14332-28-6*0
Propynylidene		543.47	546.47	± 0.65	kJ/mol	38.0480 ± 0.0024	67152-18-5*1
Butatriene		328.31	322.05	± 0.62	kJ/mol	52.0746 ± 0.0032	2873-50-9*0
Ethoxy		1.25	-12.65	± 0.42	kJ/mol	45.0605 ± 0.0017	2154-50-9*51
Acetone enol		-151.35	-168.63	± 0.68	kJ/mol	58.0791 ± 0.0025	29456-04-0*1
Phosgene		-217.50	-219.19	± 0.24	kJ/mol	98.9155 ± 0.0020	75-44-5*0
1-Hydroxy-2-propanone		-354.58	-373.96	± 0.84	kJ/mol	74.0785 ± 0.0025	116-09-6*11
Cyanoamidogen		322.63	320.14	± 0.63	kJ/mol	41.03212 ± 0.00082	12347-01-2*1
Chloroform		-94.67	-99.57	± 0.39	kJ/mol	119.3767 ± 0.0028	67-66-3*0
Tetrafluoroethylene		-670.79	-674.19	± 0.49	kJ/mol	100.0150 ± 0.0016	116-14-3*0
Fluoromethylidyne		243.11	246.71	± 0.12	kJ/mol	31.00910 ± 0.00080	3889-75-6*0
Acrylonitrile		193.82	187.06	± 0.66	kJ/mol	53.0627 ± 0.0024	107-13-1*1
Silanol		-271.0	-282.7	± 1.3	kJ/mol	48.11666 ± 0.00051	14475-38-8*0
Naphthalene		171.04	147.56	± 0.56	kJ/mol	128.1705 ± 0.0080	91-20-3*0
Nitrous acid		-72.971	-79.114	± 0.079	kJ/mol	47.01348 ± 0.00061	7782-77-6*1
1,2-Propadiene-1,3-diylidene		814.18	823.14	± 0.48	kJ/mol	36.0321 ± 0.0024	12075-35-3*0
Methylidyne		664.62	667.95	± 0.52	kJ/mol	13.01864 ± 0.00080	3315-37-5*2
Vinyl anion		236.99	232.57	± 0.68	kJ/mol	27.0458 ± 0.0016	25012-81-1*0
Oxygen atom cation		1560.786	1562.643	± 0.0021	kJ/mol	15.99885 ± 0.00030	14581-93-2*0
Cyanogen bromide		186.6	180.0	± 1.4	kJ/mol	105.9214 ± 0.0013	506-68-3*0
1-Butene		21.14	0.19	± 0.34	kJ/mol	56.1063 ± 0.0032	106-98-9*0
Ethyl hydroperoxide		-142.74	-161.16	± 0.72	kJ/mol	62.0678 ± 0.0018	3031-74-1*0
Ethylperoxy		-6.28	-22.30	± 0.64	kJ/mol	61.0599 ± 0.0017	3170-61-4*3
Formate		-463.16	-466.80	± 0.55	kJ/mol	45.0180 ± 0.0010	71-47-6*0
Methyl acetate		-394.19	-413.05	± 0.57	kJ/mol	74.0785 ± 0.0025	79-20-9*1
Ethyl bromide		-41.29	-63.23	± 0.24	kJ/mol	108.9651 ± 0.0019	74-96-4*0
Vinyl bromide		88.70	73.90	± 0.56	kJ/mol	106.9492 ± 0.0019	593-60-2*0
Benzoyl		138.2	124.7	± 1.1	kJ/mol	105.1140 ± 0.0056	2652-65-5*0
Methyl nitrite		-55.49	-67.28	± 0.44	kJ/mol	61.0401 ± 0.0010	624-91-9*2
Propadienone		132.12	130.48	± 0.61	kJ/mol	54.0474 ± 0.0024	61244-93-7*0
Chlorine fluoride		-55.623	-55.718	± 0.030	kJ/mol	54.45110 ± 0.00090	7790-89-8*0
Diazynium		1042.56	1038.95	± 0.67	kJ/mol	29.02087 ± 0.00016	12357-66-3*0
Nitrite		-182.61	-185.42	± 0.46	kJ/mol	46.00609 ± 0.00060	14797-65-0*0
Hydroxylamine		-33.08	-43.46	± 0.42	kJ/mol	33.02996 ± 0.00037	7803-49-8*1
Aminomethyl		159.40	149.56	± 0.35	kJ/mol	30.04920 ± 0.00085	10507-29-6*0
n-Butyl		102.98	80.47	± 0.69	kJ/mol	57.1143 ± 0.0033	2492-36-6*0
cis-2-Butene	$C/C=C\C$	14.31	-6.96	± 0.39	kJ/mol	56.1063 ± 0.0032	590-18-1*0
1-Butyne		180.34	166.75	± 0.55	kJ/mol	54.0904 ± 0.0032	107-00-6*0
n-Hexane		-129.91	-166.78	± 0.32	kJ/mol	86.1754 ± 0.0049	110-54-3*0
Methanetetraylbisamidogen		451.31	451.72	± 0.41	kJ/mol	40.02418 ± 0.00081	2669-76-3*0
Tetrabromomethane		142.9	113.2	± 1.1	kJ/mol	331.6267 ± 0.0041	558-13-4*0
Vinyl fluoride		-134.52	-142.32	± 0.45	kJ/mol	46.0436 ± 0.0016	75-02-5*0
Phenylium		1149.11	1136.33	± 0.85	kJ/mol	77.1034 ± 0.0048	17333-73-2*0
Fluorobenzene		-96.05	-111.73	± 0.39	kJ/mol	96.1023 ± 0.0048	462-06-6*0
Nitromethane		-60.77	-74.67	± 0.42	kJ/mol	61.0401 ± 0.0010	75-52-5*0
Fluorooxidanyl		110.28	110.90	± 0.14	kJ/mol	34.99780 ± 0.00030	12061-70-0*0
Hypoiodous acid		-54.1	-58.9	± 3.1	kJ/mol	143.91181 ± 0.00031	14332-21-9*0
Azanide		114.65	111.77	± 0.29	kJ/mol	16.02317 ± 0.00016	17655-31-1*0
Methanium		921.98	911.74	± 0.44	kJ/mol	17.04985 ± 0.00087	15135-49-6*0
Ethylidene		361.26	354.26	± 0.48	kJ/mol	28.0532 ± 0.0016	4218-50-2*1
Cyanomethyl		262.85	259.97	± 0.53	kJ/mol	40.0440 ± 0.0016	2932-82-3*0
Cyanic fluoride		8.52	8.85	± 0.70	kJ/mol	45.01584 ± 0.00080	1495-50-7*0
n-Pentane		-114.19	-146.07	± 0.29	kJ/mol	72.1488 ± 0.0041	109-66-0*0
Formic acid		-354.70	-361.81	± 0.37	kJ/mol	46.0254 ± 0.0010	64-18-6*2
Cyanooxidanyl		126.96	127.43	± 0.33	kJ/mol	42.01684 ± 0.00086	22400-26-6*0
Ethenamine		69.33	54.77	± 0.66	kJ/mol	43.0678 ± 0.0016	593-67-9*0
Aziridine		143.37	126.84	± 0.89	kJ/mol	43.0678 ± 0.0016	151-56-4*0
Fluoroethane		-257.23	-272.09	± 0.36	kJ/mol	48.0595 ± 0.0016	353-36-6*0
Chlorotrifluoromethane		-704.38	-709.48	± 0.56	kJ/mol	104.4586 ± 0.0012	75-72-9*0
Pyridine		157.34	140.54	± 0.40	kJ/mol	79.0999 ± 0.0040	110-86-1*0
Acrylonitrile		193.82	187.06	± 0.66	kJ/mol	53.0627 ± 0.0024	107-13-1*0
1,2,3-Butatrien-1-yl		497.40	497.42	± 0.69	kJ/mol	51.0666 ± 0.0032	22112-56-7*0
Disilane		92.1	76.0	± 1.3	kJ/mol	62.21864 ± 0.00073	1590-87-0*0
2,4-Hexadiyne		380.17	370.15	± 0.86	kJ/mol	78.1118 ± 0.0048	2809-69-0*0
Hydrogen sulfide		-17.32	-20.24	± 0.18	kJ/mol	34.0819 ± 0.0060	7783-06-4*0
Bromooxidanyl		131.20	123.66	± 0.28	kJ/mol	95.9034 ± 0.0010	15656-19-6*0
Nitrous oxide		86.022	82.593	± 0.096	kJ/mol	44.01288 ± 0.00033	10024-97-2*0
Peroxynitrous acid		-5.77	-14.21	± 0.36	kJ/mol	63.01288 ± 0.00091	14691-52-2*3
Dioxygen cation		1164.585	1165.221	± 0.0092	kJ/mol	31.99825 ± 0.00060	12185-07-8*0
Ethynylene		819.991	828.457	± 0.087	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		1119.08	1115.64	± 0.55	kJ/mol	27.0447 ± 0.0016	14604-48-9*0
Vinylidene		411.22	412.14	± 0.30	kJ/mol	26.0373 ± 0.0016	2143-69-3*0
Hydroxymethylium		717.68	709.73	± 0.19	kJ/mol	31.03337 ± 0.00088	18682-95-6*0
Hydroxymethylene		112.68	108.91	± 0.27	kJ/mol	30.02598 ± 0.00087	19710-56-6*1
Peroxyformic acid		-279.24	-288.59	± 0.63	kJ/mol	62.0248 ± 0.0012	107-32-4*1
1,2-Propadienyl anion		266.03	262.97	± 0.64	kJ/mol	39.0565 ± 0.0024	64066-06-4*0
Propadienylidene		554.40	555.55	± 0.40	kJ/mol	38.0480 ± 0.0024	60731-10-4*0
trans-2-Butene		9.45	-11.12	± 0.37	kJ/mol	56.1063 ± 0.0032	624-64-6*0
Cyclopentane		-43.70	-76.27	± 0.41	kJ/mol	70.1329 ± 0.0041	287-92-3*0
Vinoxy		23.03	16.23	± 0.57	kJ/mol	43.0446 ± 0.0016	6912-06-7*0
Propionaldehyde		-171.23	-186.64	± 0.24	kJ/mol	58.0791 ± 0.0025	123-38-6*0
Phenolate		-146.46	-161.93	± 0.84	kJ/mol	93.1038 ± 0.0048	3229-70-7*0
(1E)-Ethanimine		55.74	39.53	± 0.72	kJ/mol	43.0678 ± 0.0016	56003-81-7*0
Diazomethyl		467.77	465.21	± 0.68	kJ/mol	41.03212 ± 0.00082	20813-32-5*1
Bromotrifluoromethane		-638.74	-650.85	± 0.40	kJ/mol	148.9099 ± 0.0013	75-63-8*0
Bromoform		79.7	53.6	± 1.0	kJ/mol	252.7306 ± 0.0031	75-25-2*0
Cyclopentadienyl		275.19	262.07	± 0.91	kJ/mol	65.0932 ± 0.0040	2143-53-5*0
Carbamoyl		-7.79	-14.19	± 0.74	kJ/mol	44.03272 ± 0.00087	2858-51-7*0
Tetrahedrane		547.67	539.26	± 0.91	kJ/mol	52.0746 ± 0.0032	157-39-1*0
Silylene		271.42	269.75	± 0.86	kJ/mol	30.10138 ± 0.00033	13825-90-6*2
Chlorine dioxide		101.41	98.94	± 0.29	kJ/mol	67.4515 ± 0.0011	10049-04-4*0
(E)-Diazene		207.12	199.97	± 0.41	kJ/mol	30.02936 ± 0.00020	15626-43-4*0
Ethylidene		373.60	366.37	± 0.58	kJ/mol	28.0532 ± 0.0016	4218-50-2*2
Trioxidane		-81.71	-90.56	± 0.41	kJ/mol	50.01408 ± 0.00091	14699-99-1*1
(E)-Iminomethyl		275.79	272.18	± 0.56	kJ/mol	28.03332 ± 0.00082	54980-10-8*0
Cyanogen		308.18	310.12	± 0.41	kJ/mol	52.0349 ± 0.0016	460-19-5*0
Water			-285.800	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*590
Peroxyformyl		-100.42	-105.73	± 0.67	kJ/mol	61.0168 ± 0.0012	56240-83-6*1
1-Methylethenyl		262.99	252.59	± 0.61	kJ/mol	41.0718 ± 0.0024	15552-77-9*0
neo-Pentane		-134.25	-167.13	± 0.38	kJ/mol	72.1488 ± 0.0041	463-82-1*0
Trimethylamine		2.62	-26.24	± 0.79	kJ/mol	59.1103 ± 0.0025	75-50-3*0
Diazomethane		273.53	267.26	± 0.86	kJ/mol	42.04006 ± 0.00082	334-88-3*0
Dichloromethylene		229.87	231.05	± 0.64	kJ/mol	82.9161 ± 0.0020	1605-72-7*2
Trifluoromethylium		409.71	406.50	± 0.42	kJ/mol	69.00536 ± 0.00080	18851-76-8*0
Ethyl nitrite		-81.24	-99.98	± 0.87	kJ/mol	75.0666 ± 0.0017	109-95-5*1
Methylketene		-54.19	-63.66	± 0.63	kJ/mol	56.0633 ± 0.0024	6004-44-0*0
Hypobromite		-96.04	-103.52	± 0.54	kJ/mol	95.9039 ± 0.0010	14380-62-2*0
Azido radical		452.24	449.66	± 0.60	kJ/mol	42.02022 ± 0.00021	12596-60-0*0
Difluorodioxidane		35.33	31.61	± 0.40	kJ/mol	69.99561 ± 0.00060	7783-44-0*0
Hydroxyoxomethylium		600.68	597.59	± 0.44	kJ/mol	45.0169 ± 0.0010	638-71-1*0
Aminooxy		70.63	64.02	± 0.62	kJ/mol	32.02202 ± 0.00034	13408-29-2*0
Hydroxyamidogen		101.28	94.45	± 0.87	kJ/mol	32.02202 ± 0.00034	13940-32-4*1
Hydrazoic acid		297.88	291.58	± 0.49	kJ/mol	43.02816 ± 0.00022	7782-79-8*0
Acetylium		666.64	659.36	± 0.42	kJ/mol	43.0441 ± 0.0016	15762-07-9*0
Aminomethylium		763.60	751.63	± 0.53	kJ/mol	30.04865 ± 0.00085	488821-23-4*0
Hydrogen isocyanide		192.06	192.44	± 0.31	kJ/mol	27.02538 ± 0.00081	6914-07-4*0
Chloroacetylene		229.30	230.16	± 0.45	kJ/mol	60.4820 ± 0.0018	593-63-5*0
Fluoroacetylene		104.98	105.69	± 0.40	kJ/mol	44.0277 ± 0.0016	2713-09-9*0
Ozonide		-58.47	-60.83	± 0.21	kJ/mol	47.99875 ± 0.00090	12596-80-4*0
Dioxidanide		-88.90	-91.56	± 0.34	kJ/mol	33.00729 ± 0.00060	14691-59-9*0
1-Propenyl		278.16	267.32	± 0.63	kJ/mol	41.0718 ± 0.0024	6067-68-1*2
1-Hydroxyethylium		608.75	594.33	± 0.38	kJ/mol	45.0600 ± 0.0017	18682-96-7*1
Ketenyl		177.05	178.15	± 0.54	kJ/mol	41.0287 ± 0.0016	51095-15-9*0
Formic acid		-371.03	-378.33	± 0.21	kJ/mol	46.0254 ± 0.0010	64-18-6*0
Acetic acid		-397.72	-412.13	± 0.52	kJ/mol	60.0520 ± 0.0017	64-19-7*2
Glycolaldehyde		-304.48	-317.75	± 0.89	kJ/mol	60.0520 ± 0.0017	141-46-8*11
Methyl formate		-326.7	-339.1	± 1.1	kJ/mol	60.0520 ± 0.0017	107-31-3*2
Glyoxal		-207.81	-213.44	± 0.55	kJ/mol	58.0361 ± 0.0017	107-22-2*1
(Methylamino)methyl		168.74	152.29	± 0.71	kJ/mol	44.0758 ± 0.0017	31277-24-4*0
Diazirinyl		491.00	487.61	± 0.96	kJ/mol	41.03212 ± 0.00082	69967-71-1*1
Diazirine		320.4	312.7	± 1.1	kJ/mol	42.04006 ± 0.00082	157-22-2*0
Trichloromethyl		73.75	73.27	± 0.84	kJ/mol	118.3688 ± 0.0028	3170-80-7*0
1,1-Dichloroethane		-120.17	-132.95	± 0.43	kJ/mol	98.9586 ± 0.0024	75-34-3*0
Bromobenzene		127.0	104.9	± 1.3	kJ/mol	157.0079 ± 0.0049	108-86-1*0
Acetophenone		-61.5	-84.7	± 1.0	kJ/mol	120.1485 ± 0.0064	98-86-2*0
Nitrosomethane		80.77	70.86	± 0.91	kJ/mol	45.04066 ± 0.00088	865-40-7*0
Isocyanoacetylene		484.76	486.99	± 0.99	kJ/mol	51.0468 ± 0.0024	66723-45-3*0
Cyclobutadiene		436.65	428.19	± 0.69	kJ/mol	52.0746 ± 0.0032	1120-53-2*0
Fulvene		232.0	215.9	± 1.1	kJ/mol	78.1118 ± 0.0048	497-20-1*0
Silanone		-93.7	-99.1	± 1.0	kJ/mol	46.10078 ± 0.00045	22755-01-7*0
Silyloxy		8.6	0.6	± 1.5	kJ/mol	47.10872 ± 0.00047	81429-20-1*0
Sulfur		276.89	279.13	± 0.14	kJ/mol	32.0660 ± 0.0060	7704-34-9*0
Chlorous acid		25.76	20.71	± 0.63	kJ/mol	68.4594 ± 0.0011	13898-47-0*0
Iodooxidanyl		127.00	125.07	± 0.82	kJ/mol	142.90387 ± 0.00030	14696-98-1*0
Carbon monoxide cation		1238.310	1241.590	± 0.026	kJ/mol	28.00955 ± 0.00085	12144-04-6*0
Hydrazine		111.71	97.56	± 0.44	kJ/mol	32.04524 ± 0.00031	302-01-2*0
Nitrate		-299.70	-306.25	± 0.22	kJ/mol	62.00549 ± 0.00090	14797-55-8*0
Methanide		141.15	137.71	± 0.24	kJ/mol	15.03507 ± 0.00083	15194-58-8*0
Hypofluorite		-108.84	-108.67	± 0.48	kJ/mol	34.99835 ± 0.00030	12763-66-5*0
Methyleneamidogen		242.08	238.42	± 0.55	kJ/mol	28.03332 ± 0.00082	15845-29-1*0
Cyanogen iodide		222.5	222.0	± 1.7	kJ/mol	152.92191 ± 0.00080	506-78-5*0
Fluorodioxidanyl		26.87	25.16	± 0.26	kJ/mol	50.99720 ± 0.00060	15499-23-7*0
Formyl anion		11.59	11.97	± 0.44	kJ/mol	29.01859 ± 0.00086	57340-31-5*0
Cyclopropyl		303.87	291.24	± 0.49	kJ/mol	41.0718 ± 0.0024	2417-82-5*0
2-Propynylidyne		717.98	722.33	± 0.79	kJ/mol	37.0400 ± 0.0024	53590-28-6*0
iso-Pentane		-118.93	-152.98	± 0.39	kJ/mol	72.1488 ± 0.0041	78-78-4*0
1-Hydroxyethylidene		57.36	46.98	± 0.78	kJ/mol	44.0526 ± 0.0017	30967-49-8*21
Dicarbon monoxide		377.12	381.16	± 0.83	kJ/mol	40.0208 ± 0.0016	12071-23-7*1
1-Propanol		-231.27	-255.11	± 0.24	kJ/mol	60.0950 ± 0.0025	71-23-8*0
Acetic acid		-418.53	-432.69	± 0.36	kJ/mol	60.0520 ± 0.0017	64-19-7*0
Dimethylamidogen		175.02	157.68	± 0.92	kJ/mol	44.0758 ± 0.0017	15337-44-7*0
2-Iminoethyl		219.30	207.94	± 0.86	kJ/mol	42.0599 ± 0.0016	73843-90-0*2
Isocyanoamidogen		489.6	487.6	± 1.2	kJ/mol	41.03212 ± 0.00082	947408-73-3*1
Chloromethylene		320.35	320.64	± 0.89	kJ/mol	48.4713 ± 0.0012	2108-20-5*2
Dibromomethane		26.9	5.5	± 1.1	kJ/mol	173.8346 ± 0.0022	74-95-3*0
1,1-Difluoroethene		-343.49	-350.55	± 0.76	kJ/mol	64.0341 ± 0.0016	75-38-7*0
Phenylacetylene		332.88	317.72	± 0.71	kJ/mol	102.1332 ± 0.0064	536-74-3*0
o-Tolualdehyde		-44.7	-67.0	± 1.1	kJ/mol	120.1485 ± 0.0064	529-20-4*0
Acetonyl		-18.49	-32.09	± 0.68	kJ/mol	57.0712 ± 0.0024	3122-07-4*0
3-Buten-2-one		-95.40	-111.64	± 0.85	kJ/mol	70.0898 ± 0.0032	78-94-4*1
Urea		-218.16	-234.57	± 0.42	kJ/mol	60.05534 ± 0.00091	57-13-6*0
Oxomethaniminium		695.32	688.76	± 0.89	kJ/mol	44.03217 ± 0.00087	59348-22-0*0
Acetamide		-219.63	-237.14	± 0.56	kJ/mol	59.0672 ± 0.0017	60-35-5*0
1-Cyanovinyl		419.0	418.9	± 1.1	kJ/mol	52.0547 ± 0.0024	15091-87-9*0
Disilanyl		242.6	230.6	± 1.6	kJ/mol	61.21070 ± 0.00069	73151-72-1*0
Disilene		288.6	280.0	± 1.9	kJ/mol	60.20276 ± 0.00066	15435-77-5*2
1,3-Hexadiyne		405.10	393.41	± 0.97	kJ/mol	78.1118 ± 0.0048	4447-21-6*0
(E)-1-Methylallyl		152.53	135.22	± 0.80	kJ/mol	55.0984 ± 0.0032	17787-86-9*0
Sulfuric acid			-892.17	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*839
Chlorine trifluoride		-158.63	-162.73	± 0.86	kJ/mol	92.44791 ± 0.00090	7790-91-2*0
Iodine monochloride		19.024	17.391	± 0.013	kJ/mol	162.35717 ± 0.00090	7790-99-0*0
Iodotrifluoromethane		-583.31	-589.19	± 0.45	kJ/mol	195.91038 ± 0.00080	2314-97-8*0
Trinitrogen cation		1519.41	1516.78	± 0.89	kJ/mol	42.01967 ± 0.00021	12185-03-4*0
Oxonitrate anion		88.11	88.15	± 0.25	kJ/mol	30.00669 ± 0.00031	14967-78-3*0
Nitrosyl ion		984.507	984.502	± 0.066	kJ/mol	30.00559 ± 0.00031	14452-93-8*0
Nitrogen sesquioxide		90.76	86.19	± 0.15	kJ/mol	76.01168 ± 0.00091	10544-73-7*0
Methyliumyl		1393.18	1394.04	± 0.11	kJ/mol	14.02603 ± 0.00081	15091-72-2*0
Methylene anion		328.16	328.59	± 0.18	kJ/mol	14.02713 ± 0.00081	50928-07-9*0
Methylidyne anion		475.74	479.07	± 0.21	kJ/mol	13.01919 ± 0.00080	28604-54-8*0
Ethanium		874.35	858.08	± 0.61	kJ/mol	31.0764 ± 0.0017	24669-33-8*1
Dioxygen anion		-43.36	-42.72	± 0.17	kJ/mol	31.99935 ± 0.00060	11062-77-4*0
Tetrafluorosilane		-1608.79	-1614.30	± 0.53	kJ/mol	104.07911 ± 0.00030	7783-61-1*0
iso-Propylium		822.95	805.87	± 0.23	kJ/mol	43.0871 ± 0.0024	19252-53-0*0
Carbonic acid		-602.32	-612.49	± 0.58	kJ/mol	62.0248 ± 0.0012	463-79-6*1
Methylperoxy anion		-89.68	-99.83	± 0.45	kJ/mol	47.0339 ± 0.0010	35683-44-4*0
Cyclobutane		52.28	27.75	± 0.37	kJ/mol	56.1063 ± 0.0032	287-23-0*0
2-Butynyl		318.06	310.69	± 0.67	kJ/mol	53.0825 ± 0.0032	82252-88-8*0
1,2-Butadienyl		328.90	320.17	± 0.63	kJ/mol	53.0825 ± 0.0032	4777-46-2*0
Isoprene		96.23	75.71	± 0.66	kJ/mol	68.1170 ± 0.0040	78-79-5*0
Ethynol		95.30	92.82	± 0.73	kJ/mol	42.0367 ± 0.0016	32038-79-2*2
Formyloxidanyl		-125.82	-127.48	± 0.55	kJ/mol	45.0174 ± 0.0010	16499-21-1*1
Methoxyethane		-194.80	-217.69	± 0.55	kJ/mol	60.0950 ± 0.0025	540-67-0*0
Acetate		-496.01	-505.14	± 0.80	kJ/mol	59.0446 ± 0.0017	71-50-1*0
Chloronium		881.5	878.4	± 1.1	kJ/mol	37.46803 ± 0.00091	36658-55-6*0
Cyanoamidogen anion		69.65	66.65	± 0.72	kJ/mol	41.03267 ± 0.00082	67131-47-9*2
1,1,1-Trichloroethane		-133.99	-144.57	± 0.51	kJ/mol	133.4033 ± 0.0031	71-55-6*0
Tetrachloroethene		-20.58	-21.45	± 0.99	kJ/mol	165.8322 ± 0.0039	127-18-4*0
Chlorodifluoromethane		-475.66	-481.86	± 0.99	kJ/mol	86.4681 ± 0.0012	75-45-6*0
Fluoromethylene		148.38	148.67	± 0.43	kJ/mol	32.01704 ± 0.00080	13453-52-6*2
Fluoroformyl		-176.63	-176.05	± 0.37	kJ/mol	47.00850 ± 0.00085	1871-24-5*0
2-Bromoethanol		-196.31	-220.37	± 0.53	kJ/mol	124.9645 ± 0.0019	540-51-2*0
Carbon suboxide		-94.5	-92.4	± 1.0	kJ/mol	68.0309 ± 0.0025	504-64-3*0
Benzyl		230.24	211.43	± 0.55	kJ/mol	91.1305 ± 0.0056	2154-56-5*0
Phenoxy		71.00	55.71	± 0.84	kJ/mol	93.1033 ± 0.0048	2122-46-5*0
m-Tolualdehyde		-49.1	-72.0	± 1.2	kJ/mol	120.1485 ± 0.0064	620-23-5*0
Chlorine atom cation		1370.807	1372.603	± 0.0021	kJ/mol	35.45215 ± 0.00090	24203-47-2*0
3-Oxo-1-propenyl		190.93	184.90	± 0.91	kJ/mol	55.0553 ± 0.0024	206255-29-0*11
2-Propynal		135.38	133.21	± 0.88	kJ/mol	54.0474 ± 0.0024	624-67-9*0
Cyanomethylene		479.7	483.0	± 1.1	kJ/mol	39.0361 ± 0.0016	2612-62-6*1
3-Methylenecyclopropene		395.96	388.02	± 0.83	kJ/mol	52.0746 ± 0.0032	4095-06-1*0
Phenylperoxy		153.5	136.5	± 1.4	kJ/mol	109.1027 ± 0.0049	91422-02-5*0
Bromosilane		-59.1	-75.5	± 1.5	kJ/mol	111.0133 ± 0.0011	13465-73-1*0
Bromotrimethylsilane		-259.5	-290.1	± 2.0	kJ/mol	153.0931 ± 0.0027	2857-97-8*0
Trimethylsilylium		655.3	634.7	± 2.0	kJ/mol	73.1885 ± 0.0025	28927-31-3*0
1-Methyl-1-propenyl		239.95	223.77	± 0.67	kJ/mol	55.0984 ± 0.0032	71790-71-1*1
1-Butenyl		263.35	246.01	± 0.69	kJ/mol	55.0984 ± 0.0032	2669-61-6*2
Sulfur monoxide		6.02	6.06	± 0.13	kJ/mol	48.0654 ± 0.0060	13827-32-2*0
Hydroxyde			-229.756	± 0.023	kJ/mol	17.00789 ± 0.00031	14280-30-9*800
Ammonium			-133.074	± 0.056	kJ/mol	18.03795 ± 0.00029	14798-03-9*800
Methylidyne		592.832	596.166	± 0.095	kJ/mol	13.01864 ± 0.00080	3315-37-5*1
Ethylidyne		640.8	636.2	± 1.1	kJ/mol	27.0452 ± 0.0016	67624-57-1*2
Isocyanomethanide		254.05	251.01	± 0.89	kJ/mol	40.0446 ± 0.0016	81704-80-5*0
Peroxyformate		-340.95	-346.40	± 0.80	kJ/mol	61.0174 ± 0.0012	104960-05-6*1
n-Propylium		856.78	838.50	± 0.79	kJ/mol	43.0871 ± 0.0024	19252-52-9*0
1-Methylethylidene		316.02	302.12	± 0.98	kJ/mol	42.0797 ± 0.0024	40852-89-9*2
Hydrogen peroxide cation		897.29	890.30	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*1
Cycloprop-2-enylium		1080.4	1075.3	± 1.0	kJ/mol	39.0554 ± 0.0024	26810-74-2*0
Cyclobutene		177.99	160.94	± 0.60	kJ/mol	54.0904 ± 0.0032	822-35-5*0
1,3-Butadienyl		372.21	361.72	± 0.87	kJ/mol	53.0825 ± 0.0032	86181-68-2*11
Cyclohexane		-83.23	-122.79	± 0.29	kJ/mol	84.1595 ± 0.0049	110-82-7*0
Protonated oxirane		725.46	709.29	± 0.61	kJ/mol	45.0600 ± 0.0017	38607-31-70
Methoxymethylene		129.13	118.60	± 0.78	kJ/mol	44.0526 ± 0.0017	19527-10-7*21
Oxirene		387.9	383.7	± 1.3	kJ/mol	42.0367 ± 0.0016	157-18-6*11
Methanediol		-379.16	-393.36	± 0.74	kJ/mol	48.0413 ± 0.0010	463-57-0*1
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	233.54	± 0.43	kJ/mol	43.02478 ± 0.00086	506-85-4*0
Nitrosomethylidyne		389.3	390.7	± 1.1	kJ/mol	42.01684 ± 0.00086	82267-15-0*0
Acetyl chloride		-232.53	-241.53	± 0.39	kJ/mol	78.4973 ± 0.0019	75-36-5*0
Dioxoethyl		-63.17	-64.59	± 0.86	kJ/mol	57.0281 ± 0.0017	702699-38-5*0
Chlorohydroxymethyl		-54.9	-60.9	± 1.1	kJ/mol	65.4787 ± 0.0012	147139-06-8*1
1,1-Dichloroethene		9.28	3.30	± 0.50	kJ/mol	96.9427 ± 0.0024	75-35-4*0
Dichlorodifluoromethane		-488.99	-493.18	± 0.44	kJ/mol	120.9129 ± 0.0020	75-71-8*0
Fluorodichloromethane		-277.71	-283.17	± 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		210.36	210.70	± 0.65	kJ/mol	32.01704 ± 0.00080	13453-52-6*1
Formyl fluoride		-378.65	-382.24	± 0.31	kJ/mol	48.01644 ± 0.00086	1493-02-3*0
Trioxidanide		-120.0	-123.1	± 1.6	kJ/mol	49.00669 ± 0.00090	89965-38-8*2
p-Tolualdehyde		-49.9	-72.9	± 1.2	kJ/mol	120.1485 ± 0.0064	104-87-0*0
o-Toluoyl		109.7	91.3	± 1.4	kJ/mol	119.1406 ± 0.0064	104680-89-9*0
1-Propen-2-ol-1-yl		101.57	89.35	± 0.87	kJ/mol	57.0712 ± 0.0024	1976041-84-5*11
Propyl nitrite		-95.8	-120.8	± 1.8	kJ/mol	89.0932 ± 0.0025	543-67-9*1
1-Formylethenyl		177.58	172.06	± 0.80	kJ/mol	55.0553 ± 0.0024	191018-90-3*0
2-Cyanovinyl		447.78	445.29	± 0.99	kJ/mol	52.0547 ± 0.0024	189141-20-6*2
1,2,3-Butatrien-1-ylium		1271.7	1269.9	± 1.1	kJ/mol	51.0661 ± 0.0032	81932-79-8*2
1-Buten-3-yn-1-yl		547.23	544.56	± 0.87	kJ/mol	51.0666 ± 0.0032	2810-61-9*1
3-Buten-1-ynyl		628.5	626.3	± 1.0	kJ/mol	51.0666 ± 0.0032	108179-98-2*0
Fluorosilane		-346.19	-355.58	± 0.73	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		-185.9	-216.3	± 2.0	kJ/mol	88.2236 ± 0.0033	75-76-3*0
Hydroxysilyl		-104.2	-112.1	± 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		174.41	157.95	± 0.83	kJ/mol	44.0758 ± 0.0017	4422-53-1*0
2-Propanamine		-56.64	-83.43	± 0.52	kJ/mol	59.1103 ± 0.0025	75-31-0*0
Peroxyhypochlorous acid		3.97	-1.30	± 0.95	kJ/mol	68.4594 ± 0.0011	67952-07-2*0
Hypoiodite		-102.44	-104.25	± 0.88	kJ/mol	142.90442 ± 0.00030	15065-65-3*0
Dinitrogen cation		1503.311	1503.312	± 0.000	kJ/mol	28.01293 ± 0.00014	13966-04-6*0
Nitrogen atom cation		1872.905	1875.687	± 0.023	kJ/mol	14.006191 ± 0.000070	14158-23-7*0
Nitrogen atom		470.577	472.440	± 0.023	kJ/mol	14.006740 ± 0.000070	17778-88-0*1
Carbon dioxide cation		936.090	936.925	± 0.017	kJ/mol	44.00895 ± 0.00100	12181-61-2*0
Nitroxyl		79.40	74.15	± 0.19	kJ/mol	62.00494 ± 0.00090	12033-49-7*0
Hydrazino		234.76	224.24	± 0.69	kJ/mol	31.03730 ± 0.00025	13598-46-4*0
Carbon anion		589.620	594.766	± 0.041	kJ/mol	12.01125 ± 0.00080	14337-00-9*0
Chlorine pentafluoride		-226.0	-234.1	± 1.3	kJ/mol	130.44472 ± 0.00090	13637-63-3*0
Hydrogen isocyanide cation		1351.53	1351.49	± 0.83	kJ/mol	27.02483 ± 0.00081	74158-11-5*0
Cyanomethanide		113.70	110.88	± 0.53	kJ/mol	40.0446 ± 0.0016	21438-99-3*0
Methyloxonium		589.1	574.9	± 1.1	kJ/mol	33.04925 ± 0.00092	17836-08-7*0
n-Propylide		123.1	105.5	± 1.2	kJ/mol	43.0882 ± 0.0024	59513-13-2*0
Allyl anion		133.97	122.96	± 0.22	kJ/mol	41.0723 ± 0.0024	1724-46-5*0
Propargylenide		434.4	436.9	± 1.1	kJ/mol	38.0485 ± 0.0024	82906-05-6*1
Oxoniumyl ion		978.496	975.593	± 0.024	kJ/mol	18.01473 ± 0.00033	56583-62-1*0
t-Butyl		75.28	49.98	± 0.75	kJ/mol	57.1143 ± 0.0033	1605-73-8*0
2-Butyn-1-yl anion		253.6	244.8	± 1.1	kJ/mol	53.0830 ± 0.0032	65114-66-1*0
Ethoxy		5.52	-8.91	± 0.43	kJ/mol	45.0605 ± 0.0017	2154-50-9*52
Ethenol		-108.95	-119.67	± 0.50	kJ/mol	44.0526 ± 0.0017	557-75-5*2
Hydroperoxymethyl		73.17	65.87	± 0.97	kJ/mol	47.0333 ± 0.0010	74087-87-9*0
Oxiranyl		172.83	164.55	± 0.98	kJ/mol	43.0446 ± 0.0016	31586-84-2*0
Ketene		182.0	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
Methanediol		-369.01	-382.16	± 0.93	kJ/mol	48.0413 ± 0.0010	463-57-0*2
Dioxirane		9.40	1.73	± 0.53	kJ/mol	46.0254 ± 0.0010	157-26-6*0
Methoxyethene		-89.5	-107.4	± 1.1	kJ/mol	58.0791 ± 0.0025	107-25-5*2
2-Propanol		-248.67	-272.77	± 0.26	kJ/mol	60.0950 ± 0.0025	67-63-0*0
Methyl acetate		-363.3	-382.1	± 1.2	kJ/mol	74.0785 ± 0.0025	79-20-9*2
Carboxymethyl		-226.7	-236.5	± 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		294.67	286.04	± 0.92	kJ/mol	42.0599 ± 0.0016	180385-92-6*0
Nitrilomethylimidogen		581.5	578.4	± 1.5	kJ/mol	41.03212 ± 0.00082	324529-58-0*2
Cyanoacetylide		300.3	305.6	± 1.1	kJ/mol	50.0394 ± 0.0024	12373-53-4*0
Hydroperoxonium		738.2	727.9	± 1.2	kJ/mol	35.02207 ± 0.00064	70850-26-9*1
Chloromethylidyne		430.63	434.38	± 0.67	kJ/mol	47.4634 ± 0.0012	3889-76-7*0
Chloromethanol		-232.4	-242.7	± 1.2	kJ/mol	66.4866 ± 0.0013	15454-33-8*0
Chloromethoxy		-12.0	-18.9	± 1.1	kJ/mol	65.4787 ± 0.0012	114282-89-2*0
Fluorotrichloromethane		-283.33	-286.48	± 0.76	kJ/mol	137.3672 ± 0.0028	75-69-4*0
Hexafluoroethane		-1334.12	-1342.42	± 0.82	kJ/mol	138.0118 ± 0.0016	76-16-4*0
Formyl chloride		-179.87	-183.08	± 0.67	kJ/mol	64.4707 ± 0.0012	2565-30-2*0
2-Chloroethanol		-249.82	-266.54	± 0.59	kJ/mol	80.5132 ± 0.0019	107-07-3*0
Chloro hypochlorite		79.79	77.98	± 0.36	kJ/mol	86.9048 ± 0.0018	7791-21-1*0
o-Benzyne		468.16	459.25	± 0.86	kJ/mol	76.0960 ± 0.0048	462-80-6*2
Tropyl		296.5	279.1	± 1.1	kJ/mol	91.1305 ± 0.0056	3551-27-7*0
m-Toluoyl		108.7	90.1	± 1.5	kJ/mol	119.1406 ± 0.0064	67958-04-7*0
Sulfur dioxide anion		-401.14	-403.40	± 0.74	kJ/mol	64.0653 ± 0.0060	12143-17-8*0
Iodobenzene		178.42	162.43	± 0.99	kJ/mol	204.0084 ± 0.0048	591-50-4*0
1-Hydroxy-1-methylethyl		-78.31	-96.55	± 0.79	kJ/mol	59.0871 ± 0.0025	5131-95-3*0
Dichloride		-229.7	-228.7	± 1.4	kJ/mol	70.9059 ± 0.0018	12595-89-0*0
Trifluoroethene		-493.0	-498.0	± 1.6	kJ/mol	82.0245 ± 0.0016	359-11-5*0
Isocyanoethene		285.19	278.68	± 0.94	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		448.20	445.74	± 0.97	kJ/mol	52.0547 ± 0.0024	189141-20-6*1
Chlorooxy hypochlorite		134.57	131.34	± 0.56	kJ/mol	102.9042 ± 0.0019	12292-23-8*0
3-Methylene-1-cyclopropen-1-yl		628.2	625.6	± 1.1	kJ/mol	51.0666 ± 0.0032	127611-24-9*0
Oxosilylene		-98.35	-97.20	± 0.54	kJ/mol	44.08490 ± 0.00042	10097-28-6*0
Silyloxy anion		-311.7	-321.1	± 1.6	kJ/mol	47.10927 ± 0.00047	43336-62-5*0
Cyclobutyl		246.47	227.56	± 0.73	kJ/mol	55.0984 ± 0.0032	4548-06-5*0
1-Propanamine		-42.21	-69.95	± 0.42	kJ/mol	59.1103 ± 0.0025	107-10-8*0
Disulfur		127.48	127.79	± 0.27	kJ/mol	64.1320 ± 0.0120	23550-45-0*0
Sulfuric acid		-715.0	-729.2	± 1.2	kJ/mol	98.0795 ± 0.0061	7664-93-9*0
Sulfurous acid		-511.18	-521.39	± 0.89	kJ/mol	82.0801 ± 0.0061	7782-99-2*2
Sulfo		-366.7	-374.6	± 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			-206.57	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*800
Isodiazene		307.54	300.46	± 0.63	kJ/mol	30.02936 ± 0.00020	28647-38-3*0
Oxoammoniumyl		1092.48	1089.55	± 0.67	kJ/mol	31.01353 ± 0.00032	63559-87-5*0
Peroxynitrous acid		7.81	0.73	± 0.41	kJ/mol	63.01288 ± 0.00091	14691-52-2*1
Carbon cation		1797.849	1803.447	± 0.041	kJ/mol	12.01015 ± 0.00080	14067-05-1*0
Ethylidyne		508.60	504.90	± 0.80	kJ/mol	27.0452 ± 0.0016	67624-57-1*0
Ethynylium		1687.63	1690.97	± 0.15	kJ/mol	25.0288 ± 0.0016	16456-59-0*0
Methylamidogen anion		145.39	134.56	± 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		953.3	949.3	± 1.4	kJ/mol	28.03277 ± 0.00082	196216-36-1*0
Water dimer		-491.024	-499.064	± 0.044	kJ/mol	36.03056 ± 0.00066	25655-83-8*0
Hydrogen carbonate		-719.3	-725.6	± 1.5	kJ/mol	61.0174 ± 0.0012	71-52-3*0
Cyclopropylide		265.3	252.5	± 1.1	kJ/mol	41.0723 ± 0.0024	1724-45-4*0
Propylidyne		492.6	483.0	± 1.1	kJ/mol	41.0718 ± 0.0024	85056-54-8*1
Cyclopropylidene		474.94	466.92	± 0.85	kJ/mol	40.0639 ± 0.0024	2143-70-6*1
Propargylium		1193.50	1190.68	± 0.32	kJ/mol	39.0554 ± 0.0024	21540-27-2*0
Cycloprop-1-enyl		527.43	523.04	± 0.58	kJ/mol	39.0559 ± 0.0024	19528-44-0*0
Cyclopropenylidene		497.05	496.08	± 0.45	kJ/mol	38.0480 ± 0.0024	16165-40-5*0
Propargylenide		436.9	439.4	± 1.1	kJ/mol	38.0485 ± 0.0024	82906-05-6*2
2-Propyn-1-ylium-1-ylidene		1598.0	1602.4	± 1.3	kJ/mol	37.0395 ± 0.0024	75104-46-0*0
1-Methylene-2-propenyl		327.10	317.09	± 0.75	kJ/mol	53.0825 ± 0.0032	1204515-52-5*0
Chloric acid		0.6	-6.5	± 1.1	kJ/mol	84.4588 ± 0.0013	7790-93-4*0
Cyclopentene		59.58	35.32	± 0.46	kJ/mol	68.1170 ± 0.0040	142-29-0*0
n-Heptane		-145.40	-187.27	± 0.45	kJ/mol	100.2019 ± 0.0057	142-82-5*0
n-Octane		-161.02	-207.86	± 0.53	kJ/mol	114.2285 ± 0.0065	111-65-9*0
Difluoride		-291.0	-290.2	± 1.5	kJ/mol	37.9973550 ± 0.0000010	12184-85-9*0
Methoxymethyl		13.19	0.63	± 0.91	kJ/mol	45.0605 ± 0.0017	16520-04-0*0
Trioxidane		-72.58	-81.07	± 0.79	kJ/mol	50.01408 ± 0.00091	14699-99-1*2
Oxoethanide		-43.9	-49.4	± 1.3	kJ/mol	43.0452 ± 0.0016	78944-68-0*0
Oxirene		273.18	271.02	± 0.92	kJ/mol	42.0367 ± 0.0016	157-18-6*2
Perchloryl		191.76	186.09	± 0.62	kJ/mol	83.4509 ± 0.0013	13932-10-0*0
2-Hydroperoxyethyl		64.5	50.2	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-97-3*32
Methoxyoxomethyl		-152.8	-160.9	± 1.2	kJ/mol	59.0440 ± 0.0017	16481-04-2*1
Oxygen atom		246.844	249.229	± 0.0021	kJ/mol	15.99940 ± 0.00030	17778-80-2*1
Hydroxyformyl		-174.34	-177.37	± 0.48	kJ/mol	45.0174 ± 0.0010	2564-86-5*2
Hydroxyformyl anion		-319.54	-322.12	± 0.56	kJ/mol	45.0180 ± 0.0010	78944-70-4*2
Chlorate		-208.2	-213.7	± 1.5	kJ/mol	83.4514 ± 0.0013	14866-68-3*0
Ethoxyethane		-223.74	-251.16	± 0.60	kJ/mol	74.1216 ± 0.0033	60-29-7*0
Ethyl formate		-375.2	-393.9	± 1.0	kJ/mol	74.0785 ± 0.0025	109-94-4*1
Propionic acid		-435.94	-453.83	± 0.59	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
(Methylimino)methyl		278.0	267.8	± 1.1	kJ/mol	42.0599 ± 0.0016	117928-23-1*1
1-Aziridinyl		313.8	301.6	± 1.4	kJ/mol	42.0599 ± 0.0016	23838-09-7*0
(Dimethylamino)methyl		166.4	143.3	± 1.3	kJ/mol	58.1024 ± 0.0025	30208-47-0*0
Cyanoamidogen		652.4	649.5	± 1.2	kJ/mol	41.03212 ± 0.00082	12347-01-2*21
Diazomethyl		652.6	649.6	± 1.3	kJ/mol	41.03212 ± 0.00082	20813-32-5*22
Diazomethanide		305.10	302.00	± 0.76	kJ/mol	41.03267 ± 0.00082	100840-43-5*2
Isocyanoamidogen		828.2	825.3	± 1.3	kJ/mol	41.03212 ± 0.00082	947408-73-3*22
Ethylamidogen anion		106.51	88.86	± 0.80	kJ/mol	44.0763 ± 0.0017	54448-40-7*0
Chloromethide		56.3	53.0	± 2.0	kJ/mol	49.4798 ± 0.0012	60291-29-4*0
Hexachloroethane		-144.2	-146.6	± 1.3	kJ/mol	236.7376 ± 0.0056	67-72-1*0
cis-1,2-Dichloroethene	$C(\Cl)=C\Cl$	3.80	-2.20	± 0.55	kJ/mol	96.9427 ± 0.0024	156-59-2*0
Dichloroacetylene		232.71	236.02	± 0.73	kJ/mol	94.9268 ± 0.0024	7572-29-4*0
Bromanylium		1257.771	1251.709	± 0.056	kJ/mol	79.90345 ± 0.00100	22541-56-6*0
Difluoromethylene		-193.89	-193.41	± 0.35	kJ/mol	50.00751 ± 0.00080	2154-59-8*0
1,1-Difluoroethane		-488.99	-502.72	± 0.53	kJ/mol	66.0500 ± 0.0016	75-37-6*0
2-Fluoroethanol		-405.70	-422.94	± 0.99	kJ/mol	64.0589 ± 0.0017	371-62-0*0
2-Hydrotrioxy		299.7	294.0	± 1.2	kJ/mol	49.00614 ± 0.00090	12500-78-60
Benzylide		142.00	123.09	± 0.40	kJ/mol	91.1310 ± 0.0056	18860-15-6*0
Cycloheptatriene		207.43	184.01	± 0.94	kJ/mol	92.1384 ± 0.0056	544-25-2*0
Ethylbenzene		58.35	29.89	± 0.53	kJ/mol	106.1650 ± 0.0064	100-41-4*0
Phenylethene		169.82	148.48	± 0.53	kJ/mol	104.1491 ± 0.0064	100-42-5*0
Benzonitrile		230.05	215.85	± 0.93	kJ/mol	103.1213 ± 0.0056	100-47-0*0
p-Toluoyl		107.8	89.1	± 1.5	kJ/mol	119.1406 ± 0.0064	67958-03-6*0
Acetonate		-187.58	-201.14	± 0.92	kJ/mol	57.0717 ± 0.0024	24262-31-5*0
Methyl nitrite		-55.49	-66.16	± 0.44	kJ/mol	61.0401 ± 0.0010	624-91-9*0
Acryloyl		102.82	97.22	± 0.98	kJ/mol	55.0553 ± 0.0024	72241-20-4*2
3-Oxo-1,2-propadien-1-yl		290.30	292.81	± 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	595.6	± 1.2	kJ/mol	53.0627 ± 0.0024	123416-74-0*11
1-Cyanovinyl anion		224.2	221.4	± 1.2	kJ/mol	52.0553 ± 0.0024	36259-97-9*0
1,2,3-Butatrien-1-yl anion		388.4	386.5	± 1.1	kJ/mol	51.0672 ± 0.0032	102275-54-7*0
Silylene		362.0	360.4	± 1.1	kJ/mol	30.10138 ± 0.00033	13825-90-6*1
Di-mu-hydrodihydrodisilicon		374.5	364.1	± 2.4	kJ/mol	60.20276 ± 0.00066	129970-82-7*12
Methylsilane		-9.73	-25.91	± 0.92	kJ/mol	46.14384 ± 0.00095	992-94-9*0
Trimethylsiloxy		-188.1	-211.1	± 1.9	kJ/mol	89.1885 ± 0.0025	54572-10-0*0
1,5-Hexadiyne		431.5	421.1	± 1.2	kJ/mol	78.1118 ± 0.0048	628-16-0*0
2-Methylallyl		155.82	138.70	± 0.77	kJ/mol	55.0984 ± 0.0032	15157-95-6*0
3-Butenyl		223.11	206.61	± 0.91	kJ/mol	55.0984 ± 0.0032	2154-62-3*0
2-Methyl-1-propenyl		251.12	234.10	± 0.73	kJ/mol	55.0984 ± 0.0032	33825-33-1*0
N-Methylethanamine		-17.5	-45.6	± 1.1	kJ/mol	59.1103 ± 0.0025	624-78-2*0
Phenanthrene		231.86	203.04	± 0.77	kJ/mol	178.2292 ± 0.0112	85-01-8*0
Disulfene oxide		-50.50	-52.51	± 0.43	kJ/mol	80.1314 ± 0.0120	20901-21-7*0
Sulfur hydroxide oxide		-474.0	-483.5	± 1.7	kJ/mol	97.0715 ± 0.0061	12337-07-4*1
Dinitrogen tetraoxide		20.19	10.90	± 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
Nitryl hydride		-36.73	-43.70	± 0.93	kJ/mol	47.01348 ± 0.00061	90266-90-3*0
Methyliumylidene		1619.753	1623.096	± 0.042	kJ/mol	13.01809 ± 0.00080	24361-82-8*0
Oxidanylium		1293.361	1293.391	± 0.026	kJ/mol	17.00679 ± 0.00031	12259-29-9*0
Ethylidyne		508.60	504.90	± 0.80	kJ/mol	27.0452 ± 0.0016	67624-57-1*1
Vinylidene anion		364.27	364.08	± 0.31	kJ/mol	26.0378 ± 0.0016	66295-36-1*0
Methanol cation		856.82	846.50	± 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
Carbonic acid		-596.50	-606.61	± 0.74	kJ/mol	62.0248 ± 0.0012	463-79-6*2
Carbonic acid		-561.31	-570.15	± 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
Tetroxidane		-33.27	-43.94	± 0.44	kJ/mol	66.0135 ± 0.0012	29683-94-1*21
Propylidene		349.50	335.81	± 0.96	kJ/mol	42.0797 ± 0.0024	6700-78-3*1
Allylium		964.43	952.87	± 0.33	kJ/mol	41.0713 ± 0.0024	1724-44-3*0
Propylidyne		624.8	613.2	± 1.2	kJ/mol	41.0718 ± 0.0024	85056-54-8*2
1-Propynyl		528.51	526.34	± 0.65	kJ/mol	39.0559 ± 0.0024	89342-91-6*0
1-Propynylide		264.57	260.98	± 0.66	kJ/mol	39.0565 ± 0.0024	36147-87-2*0
1-Propen-1-yl-3-ylidene		656.7	653.3	± 1.1	kJ/mol	39.0559 ± 0.0024	84654-90-0*11
sec-Butyl		91.24	66.47	± 0.84	kJ/mol	57.1143 ± 0.0033	2348-55-2*0
t-Butyl anion		76.8	52.1	± 1.3	kJ/mol	57.1148 ± 0.0033	65114-21-8*0
Hypochloroperoxoous acid, hydroxy ester		48.4	41.5	± 1.8	kJ/mol	84.4588 ± 0.0013	928652-99-7*1
2-Hydroxyethenyl		137.99	131.25	± 0.72	kJ/mol	43.0446 ± 0.0016	108665-16-3*21
Oxiranylidene		213.5	209.2	± 1.4	kJ/mol	42.0367 ± 0.0016	50983-85-2*2
Oxygen atom		436.665	438.523	± 0.0021	kJ/mol	15.99940 ± 0.00030	17778-80-2*2
1-Hydroperoxyethylium		690.5	674.8	± 1.5	kJ/mol	61.0594 ± 0.0017	126898-98-421
Hydroxyformyl anion		-313.65	-315.45	± 0.56	kJ/mol	45.0180 ± 0.0010	78944-70-4*1
Ethoxyethene		-118.0	-141.8	± 1.5	kJ/mol	72.1057 ± 0.0033	109-92-2*2
1,1-Ethenediol		-307.67	-320.62	± 0.83	kJ/mol	60.0520 ± 0.0017	10375-04-9*1
1,2-Ethenediol		-272.83	-285.16	± 0.90	kJ/mol	60.0520 ± 0.0017	1571-60-4*1
Iodine monobromide		49.713	40.766	± 0.067	kJ/mol	206.8085 ± 0.0010	7789-33-5*0
(Formyloxy)methyl		-151.5	-159.6	± 1.1	kJ/mol	59.0440 ± 0.0017	3122-12-1*1
Ethylene glycol		-369.67	-389.29	± 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		729.57	710.95	± 0.97	kJ/mol	44.0752 ± 0.0017	31277-24-40
(Methyleneamino)methyl anion		187.0	176.5	± 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
Bromotrichloromethane		-29.75	-38.90	± 0.54	kJ/mol	198.2728 ± 0.0030	75-62-7*0
Bromochlorane		21.876	14.433	± 0.060	kJ/mol	115.3567 ± 0.0013	13863-41-7*0
Dichloromethyl		92.88	90.96	± 0.88	kJ/mol	83.9240 ± 0.0020	3474-12-2*0
Chloromethyl		118.43	115.36	± 0.87	kJ/mol	49.4793 ± 0.0012	6806-86-6*0
Methyl hypochlorite		-53.1	-63.1	± 1.4	kJ/mol	66.4866 ± 0.0013	593-78-2*0
1,2-Dichloroethane		-118.51	-130.45	± 0.54	kJ/mol	98.9586 ± 0.0024	107-06-2*0
Tetraiodomethane		320.9	315.8	± 2.0	kJ/mol	519.62858 ± 0.00081	507-25-5*0
Chlorofluoromethane		-256.48	-263.68	± 0.85	kJ/mol	68.4777 ± 0.0012	593-70-4*0
Difluoromethyliumyl		908.25	908.68	± 0.77	kJ/mol	50.00696 ± 0.00080	54250-40-7*0
Fluoromethyliumylidene		1123.07	1126.29	± 0.45	kJ/mol	31.00855 ± 0.00080	33412-11-2*0
Trioxidanyl		25.36	23.38	± 0.13	kJ/mol	49.00614 ± 0.00090	12500-78-6*1
1,2-Difluoroacetylene		2.87	5.69	± 0.64	kJ/mol	62.0182 ± 0.0016	689-99-6*0
Chloroformyl		-21.92	-20.53	± 0.49	kJ/mol	63.4628 ± 0.0012	2602-42-8*0
o-Benzyne anion		413.77	404.66	± 0.95	kJ/mol	76.0965 ± 0.0048	100569-88-8*0
Cycloheptene		28.40	-8.83	± 0.75	kJ/mol	96.1702 ± 0.0057	628-92-2*0
Benzoylium		763.4	749.4	± 1.3	kJ/mol	105.1135 ± 0.0056	19270-10-1*0
Benzoyl fluoride		-288.5	-304.9	± 1.3	kJ/mol	124.1124 ± 0.0056	455-32-3*0
Fluorobenzene cation		791.93	776.91	± 0.39	kJ/mol	96.1018 ± 0.0048	34468-25-2*0
Nitrosobenzene		216.7	199.7	± 1.2	kJ/mol	107.1100 ± 0.0048	586-96-9*0
Hydrogen fluoride			-324.57	± 0.13	kJ/mol	20.006343 ± 0.000070	7664-39-3*955
1-Methylethoxy		-25.13	-43.89	± 0.74	kJ/mol	59.0871 ± 0.0025	3958-66-5*0
Nitromethyl		139.5	130.1	± 1.1	kJ/mol	60.0321 ± 0.0010	16787-85-2*0
Iodine		107.157	106.757	± 0.0021	kJ/mol	126.904470 ± 0.000030	14362-44-8*1
2-Butanone		-216.89	-238.34	± 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		30.5	19.9	± 1.3	kJ/mol	45.04066 ± 0.00088	75-17-2*1
1,3-Cyclobutadien-1-yl		653.7	649.2	± 1.1	kJ/mol	51.0666 ± 0.0032	127611-22-7*0
Silylsilylene		317.1	309.3	± 2.0	kJ/mol	60.20276 ± 0.00066	50420-90-1*2
Fluorotrimethylsilane		-547.2	-570.8	± 2.1	kJ/mol	92.1875 ± 0.0025	420-56-4*0
Chlorotrimethylsilane		-326.4	-349.5	± 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
1,3-Pentadiyne		417.98	413.76	± 0.83	kJ/mol	64.0853 ± 0.0040	4911-55-1*0
1,4-Hexadiyne		424.6	414.7	± 1.3	kJ/mol	78.1118 ± 0.0048	10420-91-4*0
Biallenyl		410.5	398.9	± 1.5	kJ/mol	78.1118 ± 0.0048	29776-96-3*1
1,2,3,4-Hexatetraene		429.8	420.1	± 1.6	kJ/mol	78.1118 ± 0.0048	177856-38-1*0
1-Aminoethyl		133.28	116.50	± 0.94	kJ/mol	44.0758 ± 0.0017	30208-36-7*0
Ethylamidogen		166.68	150.55	± 0.95	kJ/mol	44.0758 ± 0.0017	41084-92-8*0
2-Naphthyl anion		288.6	269.2	± 1.3	kJ/mol	127.1631 ± 0.0080	88760-89-8*0
1-Naphthyl anion		283.4	264.0	± 1.2	kJ/mol	127.1631 ± 0.0080	125254-29-7*0
Dioxaziridinyl		355.1	352.6	± 1.4	kJ/mol	46.00554 ± 0.00060	66252-29-7*0
Nitrosamine		84.99	76.10	± 0.96	kJ/mol	46.02876 ± 0.00036	35576-91-1*0
Butadiynyl		801.72	808.32	± 0.99	kJ/mol	49.0507 ± 0.0032	53561-65-2*0
Sulfanyl		142.86	143.31	± 0.19	kJ/mol	33.0739 ± 0.0060	13940-21-1*0
Diazenyl		252.14	249.23	± 0.45	kJ/mol	29.02142 ± 0.00016	36882-13-0*0
Peroxynitric acid		-42.6	-52.9	± 1.3	kJ/mol	79.0123 ± 0.0012	26404-66-0*0
Nitrosyl chloride		54.473	52.572	± 0.068	kJ/mol	65.45884 ± 0.00095	2696-92-6*0
Bifluoride		-481.8	-480.6	± 1.9	kJ/mol	39.005295 ± 0.000070	18130-74-02
Carbide		504.40	510.98	± 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		1047.12	1054.71	± 0.67	kJ/mol	48.0428 ± 0.0032	12184-80-4*0
Methane cation		1150.680	1144.298	± 0.058	kJ/mol	16.04191 ± 0.00085	20741-88-2*0
Ethanium		874.35	858.11	± 0.61	kJ/mol	31.0764 ± 0.0017	24669-33-8*0
Acetylene cation		1328.89	1328.23	± 0.12	kJ/mol	26.0367 ± 0.0016	25641-79-6*0
1-Ethylium-1-ylidene		1329.7	1328.3	± 1.2	kJ/mol	27.0447 ± 0.0016	78949-84-5*0
Ethylidyne anion		457.1	453.1	± 1.2	kJ/mol	27.0458 ± 0.0016	117768-70-4*0
Isocyanomethyl		363.3	360.9	± 1.1	kJ/mol	40.0440 ± 0.0016	70971-59-4*0
Methyloxoniumylidene		1062.67	1054.86	± 0.57	kJ/mol	31.03337 ± 0.00088	58157-09-8*0
Hydroxymethylene		131.10	127.35	± 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		217.24	217.63	± 0.69	kJ/mol	29.01804 ± 0.00086	71080-92-7*0
Hydroxyoxomethoxy		-360.37	-366.45	± 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
1-Methylethylidene		326.8	313.7	± 1.2	kJ/mol	42.0797 ± 0.0024	40852-89-9*1
Chloryl hydride		197.7	191.2	± 1.6	kJ/mol	68.4594 ± 0.0011	174365-32-3*0
1-Propenyl		280.23	269.40	± 0.76	kJ/mol	41.0718 ± 0.0024	6067-68-1*1
Iodide			-56.830	± 0.090	kJ/mol	126.905019 ± 0.000030	20461-54-5*800
Cyclopropynyl		710.96	715.09	± 0.85	kJ/mol	37.0400 ± 0.0024	119178-99-3*0
n-Butyl anion		106.1	81.2	± 1.3	kJ/mol	57.1148 ± 0.0033	79431-01-9*0
sec-Butyl anion		103.3	78.8	± 1.3	kJ/mol	57.1148 ± 0.0033	79431-00-8*0
Hydrogen bromide			-120.84	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*800
1,2-Butadienyl anion		255.6	246.1	± 1.1	kJ/mol	53.0830 ± 0.0032	65114-67-2*0
n-Hexane		-179.84	-198.50	± 0.32	kJ/mol	86.1754 ± 0.0049	110-54-3*500
1-Hydroxyethylium		610.8	596.3	± 1.1	kJ/mol	45.0600 ± 0.0017	18682-96-7*2
2-Hydroxyethyl		-11.01	-23.64	± 0.93	kJ/mol	45.0605 ± 0.0017	4422-54-2*2
Vinyl alcohol cation		778.6	767.3	± 1.2	kJ/mol	44.0520 ± 0.0017	57239-63-1*2
1-Hydroxyethylidene		69.98	59.47	± 0.86	kJ/mol	44.0526 ± 0.0017	30967-49-8*22
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
1-Hydroperoxyethyl		39.5	25.9	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-98-4*0
Formic acid cation		721.94	714.86	± 0.25	kJ/mol	46.0248 ± 0.0010	50614-05-6*1
Formyloxidanyl		-122.01	-125.36	± 0.55	kJ/mol	45.0174 ± 0.0010	16499-21-1*2
1-Methoxyethenol		-284.3	-303.7	± 1.2	kJ/mol	74.0785 ± 0.0025	4453-91-2*1
1-Propene-1,2-diol		-311.5	-329.9	± 1.2	kJ/mol	74.0785 ± 0.0025	7333-03-1*1
1-Propene-1,2-diol		-293.2	-309.8	± 1.3	kJ/mol	74.0785 ± 0.0025	7333-03-1*2
(Formyloxy)methyl		-135.8	-144.0	± 1.3	kJ/mol	59.0440 ± 0.0017	3122-12-1*2
Carboxymethyl		-206.1	-215.4	± 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
Trioxidanylium		1070.4	1064.1	± 1.4	kJ/mol	49.00559 ± 0.00090	74241-49-9*1
Ethylideneamidogen		209.7	199.2	± 1.1	kJ/mol	42.0599 ± 0.0016	28445-33-2*0
(Methyleneamino)methyl		244.2	233.5	± 1.2	kJ/mol	42.0599 ± 0.0016	56391-78-7*0
2-Aminoethenyl		325.6	315.4	± 1.3	kJ/mol	42.0599 ± 0.0016	176964-54-8*1
2-Aziridinyl		360.8	348.6	± 1.7	kJ/mol	42.0599 ± 0.0016	23838-09-71
Diazirenide		454.7	452.0	± 1.5	kJ/mol	41.03267 ± 0.00082	130614-84-5*2
Bromonium		924.2	913.4	± 3.0	kJ/mol	81.9193 ± 0.0010	36658-54-5*0
1H-Diazirin-3-yl		618.7	615.8	± 1.7	kJ/mol	41.03212 ± 0.00082	324529-57-9*1
1H-Diazirene		405.2	398.1	± 1.5	kJ/mol	42.04006 ± 0.00082	157-23-3*0
Dinitrogen pentoxide		24.35	14.78	± 0.30	kJ/mol	108.0105 ± 0.0015	10102-03-1*0
1,1,2-Trichloroethane		-135.7	-147.3	± 1.1	kJ/mol	133.4033 ± 0.0031	79-00-5*0
1,1,1,2-Tetrachloroethane		-144.4	-153.0	± 1.3	kJ/mol	167.8481 ± 0.0039	630-20-6*0
Pentachloroethyl		28.9	27.0	± 1.3	kJ/mol	201.2849 ± 0.0048	7094-17-9*0
Iodomethane			-12.28	± 0.20	kJ/mol	141.93899 ± 0.00083	74-88-4*590
Difluoromethylene		43.30	44.02	± 0.36	kJ/mol	50.00751 ± 0.00080	2154-59-8*1
Ethyl iodide		-9.39	-39.25	± 0.49	kJ/mol	155.9656 ± 0.0016	75-03-6*500
cis-1,2-Difluoroethene	$F/C=C\F$	-302.84	-309.60	± 0.89	kJ/mol	64.0341 ± 0.0016	1630-77-9*0
Fluoroethynyl		445.3	449.8	± 1.6	kJ/mol	43.0198 ± 0.0016	22533-50-2*0
Fluoro(fluorooxy)methylene		-134.8	-136.0	± 1.4	kJ/mol	66.00691 ± 0.00085	479587-30-9*2
Bromo hypobromite		120.9	104.4	± 1.2	kJ/mol	175.8074 ± 0.0020	21308-80-5*0
Dibromophosgene		-97.98	-113.92	± 0.37	kJ/mol	187.8181 ± 0.0022	593-95-3*0
Dioxidenium		1110.87	1107.98	± 0.11	kJ/mol	33.00619 ± 0.00060	12207-52-2*0
Benzene		50.81	49.26	± 0.21	kJ/mol	78.1118 ± 0.0048	71-43-2*500
o-Benzyne		468.16	459.25	± 0.86	kJ/mol	76.0960 ± 0.0048	462-80-6*0
m-Benzyne		527.0	518.5	± 1.2	kJ/mol	76.0960 ± 0.0048	1828-89-3*2
p-Benzyne		587.0	577.5	± 1.2	kJ/mol	76.0960 ± 0.0048	3355-34-8*2
Cycloheptane		-72.53	-118.03	± 0.52	kJ/mol	98.1861 ± 0.0057	291-64-5*0
Bromide			-120.84	± 0.14	kJ/mol	79.90455 ± 0.00100	24959-67-9*800
Azide		193.52	190.02	± 0.91	kJ/mol	42.02077 ± 0.00021	14343-69-2*0
Iodine cation		1115.549	1115.149	± 0.0062	kJ/mol	126.903921 ± 0.000030	22541-93-1*0
Propyn-1-ol		65.6	57.4	± 1.1	kJ/mol	56.0633 ± 0.0024	6175-54-8*0
Formylethynyl		468.4	470.3	± 1.3	kJ/mol	53.0394 ± 0.0024	277743-00-7*0
2-Cyclopropen-1-one		163.8	159.9	± 1.1	kJ/mol	54.0474 ± 0.0024	2961-80-0*0
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		285.19	278.68	± 0.94	kJ/mol	53.0627 ± 0.0024	14668-82-7*1
1-Cyanoethylidene		437.5	433.8	± 1.5	kJ/mol	53.0627 ± 0.0024	498544-34-6*1
1H-Triazirin-1-yl		585.9	584.1	± 2.0	kJ/mol	42.02022 ± 0.00021	912535-95-6*0
Isocyanomethylene		582.2	583.5	± 1.7	kJ/mol	39.0361 ± 0.0016	78694-65-2*1
2-Methyl-2-cyclopropen-1-ylidene		448.0	441.8	± 1.2	kJ/mol	52.0746 ± 0.0032	185841-59-2*2
Hydrogen difluoride		-198.5	-198.4	± 1.2	kJ/mol	39.004746 ± 0.000070	12528-21-1*1
1,2,3-Butatrien-1-ylium		1425.8	1426.1	± 1.3	kJ/mol	51.0661 ± 0.0032	81932-79-8*1
But-1-en-3-yn-1-ide		419.7	418.5	± 1.2	kJ/mol	51.0672 ± 0.0032	119611-65-3*2
But-3-en-1-yn-1-ide		326.6	323.5	± 1.4	kJ/mol	51.0672 ± 0.0032	58870-47-6*2
Water anion		31.3	29.8	± 3.1	kJ/mol	18.01583 ± 0.00033	12259-30-2*100
Cyclobutenyl		337.2	324.7	± 1.2	kJ/mol	53.0825 ± 0.0032	24669-29-2*0
Propargyl chloride		186.6	180.7	± 1.3	kJ/mol	74.5086 ± 0.0026	624-65-7*0
Dioxosilane		-277.9	-279.2	± 2.0	kJ/mol	60.08430 ± 0.00067	7631-86-9*0
Silylidyne		371.32	373.12	± 0.76	kJ/mol	29.09344 ± 0.00031	13774-94-2*0
Trimethylsilyl		47.5	25.5	± 2.0	kJ/mol	73.1891 ± 0.0025	16571-41-8*0
Benzvalene		404.3	386.6	± 1.2	kJ/mol	78.1118 ± 0.0048	659-85-8*0
Chlorine difluoride		-47.0	-48.2	± 1.4	kJ/mol	73.44951 ± 0.00090	24801-48-7*0
2-Naphthalenyl		416.6	397.0	± 1.3	kJ/mol	127.1626 ± 0.0080	10237-50-0*0
1-Naphthalenyl		417.9	398.3	± 1.3	kJ/mol	127.1626 ± 0.0080	2510-51-2*0
Aniline		108.83	86.81	± 0.72	kJ/mol	93.1265 ± 0.0048	62-53-3*0
Pyruvic acid		-521.2	-535.5	± 1.1	kJ/mol	88.0621 ± 0.0026	127-17-3*0
Thiodioxy		199.3	197.1	± 1.3	kJ/mol	64.0648 ± 0.0060	164034-62-2*0
Sulfuric acid		-811.82	-813.81	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*500
Dioxyamidogen		240.5	233.8	± 1.8	kJ/mol	47.01348 ± 0.00061	71843-95-3*2
Peroxynitrous acid		-0.15	-7.20	± 0.53	kJ/mol	63.01288 ± 0.00091	14691-52-2*2
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
Deuterium atom		219.804	221.717	± 0.000	kJ/mol	2.01410177800 ± 0.00000000040	16873-17-9*0
Oxygen cation monohydrate		1153.3	1147.8	± 3.3	kJ/mol	34.01413 ± 0.00062	31748-17-10
Oxofluoronium		1342.66	1342.61	± 0.80	kJ/mol	34.99725 ± 0.00030	12763-67-6*0
Methylammonium		628.37	609.45	± 0.97	kJ/mol	32.06453 ± 0.00091	17000-00-9*0
Aminomethylene		245.9	238.1	± 1.5	kJ/mol	29.04126 ± 0.00083	35430-17-2*0
Methyleneamidogen anion		192.84	189.09	± 0.88	kJ/mol	28.03387 ± 0.00082	28892-56-0*0
(Z)-Iminomethyl		294.52	291.03	± 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
2-Hydrotrioxy anion		27.5	21.8	± 1.4	kJ/mol	49.00669 ± 0.00090	89965-38-80
Ethynylamidogen		395.30	393.27	± 0.96	kJ/mol	40.0440 ± 0.0016	73456-14-1*0
Methyleneoxonium		152.46	144.15	± 0.49	kJ/mol	32.04186 ± 0.00090	177788-17-9*0
Hydroxymethylene anion		147.2	144.1	± 1.6	kJ/mol	30.02653 ± 0.00087	207914-87-2*1
2-Hydrotrioxy cation		1298.2	1291.5	± 1.5	kJ/mol	49.00559 ± 0.00090	74241-49-90
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		-602.32	-611.63	± 0.58	kJ/mol	62.0248 ± 0.0012	463-79-6*0
Peroxyformic acid		-265.3	-273.2	± 1.5	kJ/mol	62.0248 ± 0.0012	107-32-4*2
Propan-1-yl-3-ylidene		554.4	545.7	± 1.3	kJ/mol	41.0718 ± 0.0024	50457-59-52
1-Propenylidene		392.4	388.0	± 1.1	kJ/mol	40.0639 ± 0.0024	70277-78-0*1
Triiodide			-51.32	± 0.80	kJ/mol	380.713959 ± 0.000090	14900-04-0*800
Cycloprop-2-enyl		490.27	485.72	± 0.58	kJ/mol	39.0559 ± 0.0024	28933-84-8*0
2-Propen-1-yl-3-ylidene		556.61	554.35	± 0.89	kJ/mol	39.0559 ± 0.0024	202744-74-9*0
2-Propynylidyne anion		540.00	544.77	± 0.82	kJ/mol	37.0406 ± 0.0024	82893-67-2*0
t-Butylium		733.99	710.72	± 0.98	kJ/mol	57.1137 ± 0.0033	14804-25-2*0
iso-Butyl		97.20	73.21	± 0.91	kJ/mol	57.1143 ± 0.0033	4630-45-9*0
Hydrogen difluoride cation		1174.3	1171.3	± 1.5	kJ/mol	39.004198 ± 0.000070	126950-54-70
Methylcyclopropane		47.8	24.6	± 1.3	kJ/mol	56.1063 ± 0.0032	594-11-6*0
1,2-Butadienylium		1099.2	1089.8	± 1.2	kJ/mol	53.0820 ± 0.0032	65114-67-22
Dioxosilane		-906.76	-911.74	± 0.64	kJ/mol	60.08430 ± 0.00067	7631-86-9*505
2,2-Dimethylbutane		-145.30	-185.73	± 0.75	kJ/mol	86.1754 ± 0.0049	75-83-2*0
n-Nonane		-176.20	-227.99	± 0.49	kJ/mol	128.2551 ± 0.0073	111-84-2*0
Ethanol		-269.74	-277.50	± 0.20	kJ/mol	46.0684 ± 0.0017	64-17-5*500
Trioxidaniumyl		925.6	916.4	± 1.5	kJ/mol	50.01353 ± 0.00091	161321-37-5*2
Oxywater		64.9	58.3	± 1.3	kJ/mol	34.01468 ± 0.00062	171363-09-0*0
Vinyl alcohol cation		786.56	775.34	± 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		-152.97	-160.02	± 0.57	kJ/mol	43.0452 ± 0.0016	35731-40-9*0
Oxiranyl anion		121.3	113.3	± 1.5	kJ/mol	43.0452 ± 0.0016	72722-59-9*2
Ketene		-45.36	-48.42	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*2
COC vdW		589.7	598.5	± 1.5	kJ/mol	40.0208 ± 0.0016	12071-24-81
Peroxychlorous acid		95.4	89.4	± 2.0	kJ/mol	84.4588 ± 0.0013	177778-92-6*1
Oxirene		389.9	385.7	± 1.4	kJ/mol	42.0367 ± 0.0016	157-18-6*12
Nitrosodioxaziridine		413.7	407.7	± 1.8	kJ/mol	76.01168 ± 0.00091	132871-99-9*1
1,2,3-Trioxolane		-9.5	-27.2	± 1.8	kJ/mol	76.0514 ± 0.0019	6669-36-9*0
Ethoxyoxoniumylidene		923.7	911.4	± 1.5	kJ/mol	61.0594 ± 0.0017	268728-77-4*1
Ethaneperoxolate		-120.51	-137.13	± 0.72	kJ/mol	61.0604 ± 0.0017	268728-75-2*3
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
Cyanate		-221.17	-221.39	± 0.53	kJ/mol	42.01739 ± 0.00086	661-20-1*0
Perchloric acid		11.7	0.3	± 1.3	kJ/mol	100.4582 ± 0.0015	7601-90-3*0
Oxazirinyl		450.1	450.9	± 1.5	kJ/mol	42.01684 ± 0.00086	228850-18-8*0
Hydrogen fluoride			-334.70	± 0.15	kJ/mol	20.006343 ± 0.000070	7664-39-3*800
Fluoride			-334.70	± 0.15	kJ/mol	18.99895178 ± 0.00000050	16984-48-8*800
2-Propene-1,2-diol		-295.5	-315.0	± 1.2	kJ/mol	74.0785 ± 0.0025	44169-27-9*11
Oxygen anion monohydrate		-239.0	-244.3	± 3.0	kJ/mol	34.01523 ± 0.00062	31748-17-1*0
2-Methoxy-2-oxoethyl		-203.0	-218.2	± 1.5	kJ/mol	73.0706 ± 0.0025	54668-31-4*1
(Acetyloxy)methyl		-200.2	-214.0	± 1.5	kJ/mol	73.0706 ± 0.0025	2887-49-2*1
Glyoxal		-207.81	-213.37	± 0.55	kJ/mol	58.0361 ± 0.0017	107-22-2*0
Dimethylmethyleneammonium		697.0	672.0	± 1.3	kJ/mol	58.1018 ± 0.0025	28149-27-1*0
2-Methanidylidynehydrazin-2-ium-1-ide		281.8	279.0	± 1.4	kJ/mol	41.03267 ± 0.00082	947408-74-42
2-Methanidylidynehydrazin-2-ium-1-ide		518.5	516.0	± 1.6	kJ/mol	41.03267 ± 0.00082	947408-74-412
Isocyanamide		328.4	322.5	± 1.5	kJ/mol	42.04006 ± 0.00082	4702-38-9*0
Trichloromethide		-123.3	-122.7	± 2.0	kJ/mol	118.3693 ± 0.0028	14478-07-0*0
(E)-Diazene cation		1132.48	1125.55	± 0.64	kJ/mol	30.02881 ± 0.00020	59952-06-6*0
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		-172.9	-201.8	± 1.5	kJ/mol	167.8481 ± 0.0039	79-34-5*500
(Z)-Diazene	$[H]/N=N\[H]$	228.82	221.69	± 0.63	kJ/mol	30.02936 ± 0.00020	15626-42-3*0
Pentachloroethane			-201.9	± 2.5	kJ/mol	202.2928 ± 0.0048	76-01-7*500
Trichloroethene			-48.8	± 1.5	kJ/mol	131.3874 ± 0.0031	79-01-6*590
Tetrachloroethene			-61.17	± 0.99	kJ/mol	165.8322 ± 0.0039	127-18-4*500
Trichloroethene		-10.9	-14.2	± 1.5	kJ/mol	131.3874 ± 0.0031	79-01-6*0
Bromodichloromethane		-35.0	-46.7	± 1.2	kJ/mol	163.8280 ± 0.0022	75-27-4*0
Difluorodibromomethane		-360.4	-378.5	± 1.3	kJ/mol	209.8155 ± 0.0022	75-61-6*0
Dichlorodibromomethane		27.5	11.6	± 1.3	kJ/mol	242.7241 ± 0.0028	594-18-3*0
Difluorobromomethane		-411.14	-424.34	± 0.46	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		887.7	867.6	± 1.1	kJ/mol	79.1192 ± 0.0048	26812-57-7*0
Phenylium		1251.2	1238.1	± 1.6	kJ/mol	77.1034 ± 0.0048	17333-73-2*1
Benzylium		929.66	910.17	± 0.55	kJ/mol	91.1299 ± 0.0056	6711-19-9*0
Benzoyl chloride			-157.09	± 0.26	kJ/mol	140.5667 ± 0.0057	98-88-4*500
Benzoyl chloride		-90.1	-105.4	± 1.3	kJ/mol	140.5667 ± 0.0057	98-88-4*0
Hexafluorobenzene		-942.72	-947.72	± 0.87	kJ/mol	186.0546 ± 0.0048	392-56-3*0
Chlorobenzene cation		942.59	928.67	± 0.61	kJ/mol	112.5561 ± 0.0049	55450-32-3*0
Chlorobenzene			11.34	± 0.59	kJ/mol	112.5566 ± 0.0049	108-90-7*500
m-Chlorophenyl		321.3	310.5	± 1.6	kJ/mol	111.5487 ± 0.0049	3474-40-6*0
p-Chlorophenyl		324.2	313.4	± 1.6	kJ/mol	111.5487 ± 0.0049	2396-00-1*0
o-Chlorophenyl		328.5	317.7	± 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		113.5	113.6	± 1.1	kJ/mol	204.0084 ± 0.0048	591-50-4*500
Nitrobenzene		82.1	62.1	± 1.4	kJ/mol	123.1094 ± 0.0049	98-95-3*0
3-Methylenecyclopropene cation		1181.7	1174.6	± 1.2	kJ/mol	52.0740 ± 0.0032	79105-72-9*0
1-Hydroxy-1-methylethyl cation		521.3	501.0	± 1.1	kJ/mol	59.0865 ± 0.0025	5131-95-30
1-Hydroxypropyl		-55.4	-73.1	± 1.1	kJ/mol	59.0871 ± 0.0025	5723-77-3*0
1,3-Butadien-2-ol		-53.4	-70.4	± 1.5	kJ/mol	70.0898 ± 0.0032	59120-04-6*11
Cyclopropanone		30.57	19.15	± 0.96	kJ/mol	56.0633 ± 0.0024	5009-27-8*0
2-Formylethen-1-ide		27.3	20.5	± 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
Chlorine fluoride cation		1165.52	1165.70	± 0.49	kJ/mol	54.45055 ± 0.00090	12432-44-9*0
Formaldonitrone		78.3	67.1	± 1.4	kJ/mol	45.04066 ± 0.00088	67353-84-8*0
Hydroxyaminiumyl		1161.2	1158.2	± 1.4	kJ/mol	31.01353 ± 0.00032	63559-88-6*0
Dihydrogen fluoride anion		133.2	131.9	± 1.6	kJ/mol	21.01483 ± 0.00014	117339-92-1*1
Xenon cation		1170.354	1170.354	± 0.0062	kJ/mol	131.2895 ± 0.0200	24203-25-6*0
2-Cyclopropen-1-imine		401.9	394.1	± 1.4	kJ/mol	53.0627 ± 0.0024	31589-17-0*0
1-Isocyanovinyl		519.0	517.3	± 1.4	kJ/mol	52.0547 ± 0.0024	321850-14-0*0
Vinylvinylidene		494.1	488.8	± 1.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*2
Hydroxyamidogen		123.3	116.7	± 1.7	kJ/mol	32.02202 ± 0.00034	13940-32-4*2
But-1-en-3-yn-1-ide		422.3	421.0	± 1.3	kJ/mol	51.0672 ± 0.0032	119611-65-3*1
Hydroxyaminylium		1019.5	1012.3	± 2.5	kJ/mol	32.02147 ± 0.00034	66097-71-0*1
Tetrahedryl anion		634.5	630.7	± 1.6	kJ/mol	51.0672 ± 0.0032	138805-00-2*0
Chlorine chlorite		168.6	166.2	± 1.3	kJ/mol	102.9042 ± 0.0019	105206-44-8*3
Silicon carbide		740.4	745.3	± 2.4	kJ/mol	40.09620 ± 0.00085	409-21-2*0
Silicon carbide		-70.7	-71.7	± 1.5	kJ/mol	40.09620 ± 0.00085	409-21-2*501
Silanide		69.3	63.7	± 1.4	kJ/mol	31.10987 ± 0.00037	15807-96-2*0
Fluorohydrochlorine cation		975.3	972.3	± 2.0	kJ/mol	55.45849 ± 0.00090	70110-64-4*0
Dimethylsilanone		-237.3	-252.8	± 2.3	kJ/mol	74.1539 ± 0.0017	47956-45-6*0
Dimethylsilane		-66.7	-88.2	± 1.1	kJ/mol	60.1704 ± 0.0017	1111-74-6*0
Hydroxysilyl anion		-219.2	-227.2	± 2.1	kJ/mol	47.10927 ± 0.00047	78450-47-2*1
Triprismane		575.9	556.6	± 1.3	kJ/mol	78.1118 ± 0.0048	650-42-0*0
Propargylallene		431.3	419.7	± 1.4	kJ/mol	78.1118 ± 0.0048	33142-15-3*3
Chlorosyl hydride		141.9	139.0	± 1.7	kJ/mol	52.46004 ± 0.00095	71572-35-5*0
Biphenyl		206.9	178.8	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*0
Diacetylide		460.8	465.8	± 1.0	kJ/mol	49.0513 ± 0.0032	59012-21-4*0
Aquachlorine cation		822.0	815.1	± 1.8	kJ/mol	53.46743 ± 0.00096	142599-65-3*0
Sulfur trioxide anion		-604.4	-610.0	± 2.8	kJ/mol	80.0647 ± 0.0061	12210-38-7*0
Chlorine difluoride cation		998.8	996.6	± 1.7	kJ/mol	73.44896 ± 0.00090	32629-46-2*0
Bisulfite cation		554.0	545.3	± 1.3	kJ/mol	81.0716 ± 0.0061	43637-78-1*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
Ethylene cation		1075.21	1068.00	± 0.11	kJ/mol	28.0526 ± 0.0016	34470-02-5*0
Oxadiazirene		351.7	349.9	± 1.7	kJ/mol	44.01288 ± 0.00033	227934-45-4*0
Vinylidene		610.64	610.35	± 0.39	kJ/mol	26.0373 ± 0.0016	2143-69-3*1
Iminomethide		237.3	233.5	± 1.8	kJ/mol	28.03387 ± 0.00082	90623-30-6*1
Hydroxydioxonitrate		-193.2	-197.6	± 2.4	kJ/mol	63.01343 ± 0.00091	58875-09-5*0
Hydrogen fluoride			-321.90	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*820
Cyanogen iodide anion		86.5	88.9	± 8.1	kJ/mol	152.92246 ± 0.00080	1356929-44-6*0
Methanol		-235.28	-238.61	± 0.15	kJ/mol	32.04186 ± 0.00090	67-56-1*500
Formaldehyde cation		944.850	941.229	± 0.096	kJ/mol	30.02543 ± 0.00087	54288-05-0*0
NON		545.5	542.6	± 1.7	kJ/mol	44.01288 ± 0.00033	227934-46-5*0
Isoformyl anion		267.4	268.0	± 1.6	kJ/mol	29.01859 ± 0.00086	81747-63-9*2
Dihydrogen cation		1488.364	1488.480	± 0.000	kJ/mol	2.01533 ± 0.00014	12184-90-6*0
Allene cation		1132.18	1125.03	± 0.23	kJ/mol	40.0633 ± 0.0024	65812-77-3*0
2-Propenylidene		417.5	409.9	± 1.5	kJ/mol	40.0639 ± 0.0024	19527-08-3*11
2-Propenylidene		452.64	445.50	± 0.90	kJ/mol	40.0639 ± 0.0024	19527-08-3*2
Cycloprop-1-enylide		373.6	369.2	± 1.7	kJ/mol	39.0565 ± 0.0024	80251-77-0*0
2-Cyclopropen-1-ylium-1-yl		1382.0	1380.9	± 1.1	kJ/mol	38.0474 ± 0.0024	85398-75-0*0
Propynylidene		597.7	599.4	± 1.3	kJ/mol	38.0480 ± 0.0024	67152-18-5*3
Propenediylidene		796.2	797.3	± 1.4	kJ/mol	38.0480 ± 0.0024	60731-11-5*0
n-Butylium		827.4	803.1	± 1.2	kJ/mol	57.1137 ± 0.0033	25453-90-1*0
2-Butynylium		1085.8	1077.6	± 1.3	kJ/mol	53.0820 ± 0.0032	64235-83-2*2
1-Methylene-2-propenyl anion		256.4	246.5	± 1.4	kJ/mol	53.0830 ± 0.0032	64480-63-3*0
1,3-Butadienyl anion		265.3	255.0	± 1.5	kJ/mol	53.0830 ± 0.0032	65114-68-3*0
Fluorosyl fluoride		192.8	193.3	± 2.3	kJ/mol	53.99621 ± 0.00030	86825-57-2*1
n-Decane		-192.12	-248.87	± 0.79	kJ/mol	142.2817 ± 0.0081	124-18-5*0
Ethyloxoniumyl		783.3	766.3	± 1.7	kJ/mol	46.0679 ± 0.0017	34480-55-2*0
1-Hydroxyethyl		-41.50	-54.97	± 0.92	kJ/mol	45.0605 ± 0.0017	2348-46-1*2
1-Hydroxyethylium		608.75	594.33	± 0.38	kJ/mol	45.0600 ± 0.0017	18682-96-7*0
2-Hydroxyethylium		1019.1	1006.3	± 1.5	kJ/mol	45.0600 ± 0.0017	38607-31-7*3
Ethyloxoniumylidene		988.6	974.9	± 1.5	kJ/mol	45.0600 ± 0.0017	54387-07-4*0
Acetaldehyde cation		831.98	822.01	± 0.23	kJ/mol	44.0520 ± 0.0017	36505-03-0*0
1-Hydroxyethylidene		184.9	175.5	± 1.4	kJ/mol	44.0526 ± 0.0017	30967-49-8*1
Methoxymethylene		245.3	235.8	± 1.4	kJ/mol	44.0526 ± 0.0017	19527-10-7*1
1-Hydroxyethenyl		121.31	114.93	± 0.87	kJ/mol	43.0446 ± 0.0016	81847-74-7*0
Oxiranylium		1233.6	1226.6	± 1.6	kJ/mol	43.0441 ± 0.0016	57789-76-1*1
Oxiranyl anion		141.0	135.0	± 1.6	kJ/mol	43.0452 ± 0.0016	72722-59-9*1
Acetic acid			-485.10	± 0.27	kJ/mol	60.0520 ± 0.0017	64-19-7*800
Ketenyl anion		-48.48	-47.55	± 0.82	kJ/mol	41.0293 ± 0.0016	64066-01-9*0
Dicarbon monoxide anion		154.17	157.81	± 0.83	kJ/mol	40.0213 ± 0.0016	87191-88-6*0
Dicarbon monoxide		440.21	444.54	± 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
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		1106.3	1102.6	± 1.9	kJ/mol	42.0361 ± 0.0016	94664-69-4*0
Ethynol		95.30	92.82	± 0.73	kJ/mol	42.0367 ± 0.0016	32038-79-2*0
Ethynol		400.0	397.6	± 1.9	kJ/mol	42.0367 ± 0.0016	32038-79-2*11
Oxoethylidene		265.9	262.6	± 1.6	kJ/mol	42.0367 ± 0.0016	39920-84-8*11
1-Hydroperoxyethylium		841.3	829.3	± 1.7	kJ/mol	61.0594 ± 0.0017	126898-98-411
Ethenyldioxy		118.7	109.2	± 1.3	kJ/mol	59.0440 ± 0.0017	88181-72-0*1
Formic acid cation		723.8	716.7	± 1.2	kJ/mol	46.0248 ± 0.0010	50614-05-6*2
Formic acid anion		-256.2	-262.3	± 1.8	kJ/mol	46.0259 ± 0.0010	19066-82-1*1
Triiodide		-254.3	-257.5	± 3.4	kJ/mol	380.713959 ± 0.000090	14900-04-0*0
Isocyanic acid cation		1003.01	1000.34	± 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
Peroxyimidogen		405.4	403.4	± 1.9	kJ/mol	46.00554 ± 0.00060	60488-31-50
1,2-Ethenediol		-254.0	-266.4	± 1.3	kJ/mol	60.0520 ± 0.0017	1571-60-4*2
Acetyl chloride			-272.09	± 0.39	kJ/mol	78.4973 ± 0.0019	75-36-5*500
Methyl formate			-388.59	± 0.67	kJ/mol	60.0520 ± 0.0017	107-31-3*500
Ethyl formate		-355.5	-374.6	± 1.4	kJ/mol	74.0785 ± 0.0025	109-94-4*2
Acetoxy		-182.16	-190.98	± 0.80	kJ/mol	59.0440 ± 0.0017	13799-69-4*1
2-Methoxy-2-oxoethyl		-172.9	-188.1	± 1.7	kJ/mol	73.0706 ± 0.0025	54668-31-4*2
(Acetyloxy)methyl		-173.9	-186.9	± 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
Peroxychlorite		-34.4	-34.4	± 2.0	kJ/mol	83.4514 ± 0.0013	852472-63-0*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		1363.1	1360.8	± 1.3	kJ/mol	41.03157 ± 0.00082	205443-18-1*1
1-Chloro ozone		226.3	223.0	± 2.3	kJ/mol	83.4509 ± 0.0013	141801-66-3*101
Cyanoamidogen anion		69.65	66.65	± 0.72	kJ/mol	41.03267 ± 0.00082	67131-47-9*0
Diazomethylium		1395.7	1394.1	± 1.3	kJ/mol	41.03157 ± 0.00082	271249-81-1*1
Dioxygen		94.410	94.383	± 0.000	kJ/mol	31.99880 ± 0.00060	7782-44-7*2
Diazomethanide		305.10	302.00	± 0.76	kJ/mol	41.03267 ± 0.00082	100840-43-5*0
2-Methyliumylidynehydrazin-2-ium-1-ide		1544.1	1542.4	± 1.7	kJ/mol	41.03157 ± 0.00082	947408-73-32
2-Methyliumylidynehydrazin-2-ium-1-ide		1563.0	1561.4	± 1.5	kJ/mol	41.03157 ± 0.00082	947408-73-31
Hydrogen chloride			-166.989	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*800
Nitrilomethylimidogen		728.7	725.6	± 2.4	kJ/mol	41.03212 ± 0.00082	324529-58-0*1
Dioxygenyl ion monohydrate		828.7	821.6	± 2.1	kJ/mol	50.01353 ± 0.00091	11083-61-7*0
Methanediimine		153.1	146.4	± 1.3	kJ/mol	42.04006 ± 0.00082	151-51-9*0
Chloride			-166.989	± 0.023	kJ/mol	35.45325 ± 0.00090	16887-00-6*800
Tetrachloromethane		-104.66	-124.07	± 0.41	kJ/mol	153.8215 ± 0.0037	56-23-5*500
Dichloromethylene anion		75.97	78.25	± 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		-40.8	-42.5	± 2.0	kJ/mol	83.9246 ± 0.0020	32180-91-9*0
Chloromethylium		962.4	958.5	± 1.2	kJ/mol	49.4787 ± 0.0012	59000-00-9*0
Chloromethylene		346.23	346.53	± 0.89	kJ/mol	48.4713 ± 0.0012	2108-20-5*1
Fluoronium		1490.1	1491.4	± 1.9	kJ/mol	21.01373 ± 0.00014	12206-67-6*1
1,2-Dichloroethane			-165.66	± 0.56	kJ/mol	98.9586 ± 0.0024	107-06-2*500
1,1-Dichloroethane			-163.76	± 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	-156.5	± 1.9	kJ/mol	202.2928 ± 0.0048	76-01-7*0
Dioxymethylidyne		299.8	301.1	± 1.7	kJ/mol	44.00950 ± 0.00100	791121-04-5*0
Hydrogen fluoride			-321.69	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*815
Dihydrogen fluoride anion		-257.0	-260.1	± 1.9	kJ/mol	21.01483 ± 0.00014	117339-92-12
Chloroform			-130.97	± 0.42	kJ/mol	119.3767 ± 0.0028	67-66-3*590
Chlorodibromomethane		21.5	2.7	± 3.5	kJ/mol	208.2793 ± 0.0023	124-48-1*0
Dibromide		-196.9	-211.0	± 2.2	kJ/mol	159.8085 ± 0.0020	12595-70-9*0
Bromochloromethane		-28.3	-42.4	± 1.3	kJ/mol	129.3833 ± 0.0016	74-97-5*0
Trihydrogen dioxide anion		-487.4	-495.7	± 1.1	kJ/mol	35.02317 ± 0.00064	12501-19-8*0
Fluoromethylene		148.38	148.67	± 0.43	kJ/mol	32.01704 ± 0.00080	13453-52-6*0
Ethyl iodide		8.73	-7.15	± 0.49	kJ/mol	155.9656 ± 0.0016	75-03-6*0
Azanylium		1266.56	1264.49	± 0.11	kJ/mol	16.02207 ± 0.00016	15194-15-7*0
1,2-Dibromoacetylene		332.4	321.5	± 2.3	kJ/mol	183.8294 ± 0.0026	624-61-3*0
Fluoro(fluorooxy)methylene		-97.5	-95.7	± 1.6	kJ/mol	66.00691 ± 0.00085	479587-30-9*101
Fluorooxomethylium		724.9	724.5	± 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
Benzene cation		992.61	976.14	± 0.21	kJ/mol	78.1113 ± 0.0048	34504-50-2*0
Trifluoromethide		-637.6	-639.4	± 1.8	kJ/mol	69.00646 ± 0.00080	54128-17-5*0
Diazenide		175.6	176.7	± 1.6	kJ/mol	29.02197 ± 0.00016	71004-29-0*100
Benzoic acid		-367.31	-384.73	± 0.17	kJ/mol	122.1213 ± 0.0056	65-85-0*500
2,3-Dimethylbenzaldehyde		-66.3	-94.4	± 2.4	kJ/mol	134.1751 ± 0.0072	5779-93-1*0
(2,3-dimethylphenyl)oxomethyl		82.6	59.9	± 2.6	kJ/mol	133.1672 ± 0.0072	104680-89-90
m-Chlorophenide		172.4	162.2	± 1.5	kJ/mol	111.5492 ± 0.0049	77748-34-6*0
p-Chlorophenide		179.4	169.0	± 1.5	kJ/mol	111.5492 ± 0.0049	77748-42-6*0
o-Chlorophenide		158.5	148.6	± 1.5	kJ/mol	111.5492 ± 0.0049	72863-53-7*0
Diiodide		-178.13	-180.72	± 0.48	kJ/mol	253.809489 ± 0.000060	12190-71-5*0
2-Cyclopropyn-1-ylidene		898.6	905.5	± 1.6	kJ/mol	36.0321 ± 0.0024	102508-15-6*1
2-Cyclopropyn-1-ylium-1-yl		1944.5	1952.5	± 1.9	kJ/mol	36.0316 ± 0.0024	154702-35-9*0
2-Oxopropylium		784.7	770.9	± 1.7	kJ/mol	57.0707 ± 0.0024	54088-52-7*0
Ammonium nitrate		-350.22	-365.19	± 0.18	kJ/mol	80.04344 ± 0.00095	6484-52-2*500
Ammonia			-80.882	± 0.053	kJ/mol	17.03056 ± 0.00022	7664-41-7*1000
2,3-Butanedione		-310.59	-327.15	± 0.63	kJ/mol	86.0892 ± 0.0033	431-03-8*0
1,2-Dibromoethane		-11.6	-38.5	± 1.2	kJ/mol	187.8612 ± 0.0026	106-93-4*0
Dimethylketene		-73.5	-88.3	± 1.2	kJ/mol	70.0898 ± 0.0032	598-26-5*0
Chlorosyl chloride		134.5	133.2	± 1.4	kJ/mol	86.9048 ± 0.0018	86825-56-1*0
2-Methyloxirene		344.0	334.1	± 1.8	kJ/mol	56.0633 ± 0.0024	2835-41-8*11
3-Oxo-1-propenylium		1185.6	1179.6	± 3.0	kJ/mol	55.0548 ± 0.0024	101705-90-2*111
(Hydroxyimino)methyl		250.1	243.9	± 1.9	kJ/mol	44.03272 ± 0.00087	206442-92-4*1
Fluorochlorate		-256.03	-255.43	± 0.81	kJ/mol	54.45165 ± 0.00090	12272-56-9*0
1,3-Butadiyne-1,4-diyl		1052.10	1062.07	± 0.63	kJ/mol	48.0428 ± 0.0032	78015-07-3*0
1-Isocyanoethylidene		545.5	540.7	± 1.6	kJ/mol	53.0627 ± 0.0024	498544-34-61
3-Imino-2-propen-1-ylidene		571.8	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		469.5	461.3	± 1.5	kJ/mol	53.0627 ± 0.0024	287-24-1*0
2-Cyanovinylium		1517.2	1515.1	± 1.8	kJ/mol	52.0542 ± 0.0024	85398-67-0*21
2-Cyanovinyl anion		263.7	260.8	± 1.8	kJ/mol	52.0553 ± 0.0024	85398-67-02
2-Isocyanovinyl		543.2	541.3	± 1.7	kJ/mol	52.0547 ± 0.0024	225798-14-1*1
3-Oxo-1,2-propadienylidene		330.3	336.3	± 1.8	kJ/mol	52.0315 ± 0.0024	11127-17-6*0
Vinylacetylene cation		1221.7	1215.2	± 1.1	kJ/mol	52.0740 ± 0.0032	59699-48-8*0
Bicyclo[1.1.0]but-2-ylium-1-yl		1287.0	1278.0	± 1.5	kJ/mol	52.0740 ± 0.0032	78525-41-40
3-Methylene-1-cyclopropen-1-yl anion		417.2	413.5	± 1.6	kJ/mol	51.0672 ± 0.0032	117469-28-00
2-Cyclopropen-1-ylidenemethyl		635.7	632.5	± 1.3	kJ/mol	51.0666 ± 0.0032	127611-25-0*0
5-Methyl-1,3-cyclopentadiene		133.8	110.8	± 1.4	kJ/mol	80.1277 ± 0.0048	96-38-8*0
Fulvenone		117.2	107.0	± 1.6	kJ/mol	92.0954 ± 0.0048	4727-22-4*0
Disilicon		587.5	591.4	± 1.6	kJ/mol	56.17100 ± 0.00060	12597-35-2*0
Hydrogen difluoride		-187.4	-187.1	± 1.6	kJ/mol	39.004746 ± 0.000070	12528-21-1*2
Azidonitrene		692.1	687.5	± 1.4	kJ/mol	56.02696 ± 0.00028	147363-92-6*2
Disiloxane		-330.2	-347.3	± 2.3	kJ/mol	78.21804 ± 0.00079	13597-73-4*0
Iodotrimethylsilane		-189.7	-214.5	± 2.1	kJ/mol	200.0935 ± 0.0025	16029-98-4*0
Hydroxyimidogen		217.91	215.03	± 0.77	kJ/mol	31.01408 ± 0.00032	35337-59-8*0
Chlorohydrofluorine cation		1000.8	998.1	± 2.1	kJ/mol	55.45849 ± 0.00090	70110-63-3*0
1,2,3,5-Hexatetraene		391.7	379.9	± 1.6	kJ/mol	78.1118 ± 0.0048	60239-33-0*1
1,2,3-Pentatriene		302.5	290.2	± 1.4	kJ/mol	66.1011 ± 0.0040	62018-46-6*0
(Z)-1-Methylallyl	$C/C=C\[CH2]$	154.61	137.22	± 0.99	kJ/mol	55.0984 ± 0.0032	98705-00-1*0
Nitronium		961.80	958.25	± 0.20	kJ/mol	46.00499 ± 0.00060	14522-82-8*0
Hydrogen fluoride			-321.84	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*818
Nitrous acid		-71.36	-77.71	± 0.26	kJ/mol	47.01348 ± 0.00061	7782-77-6*2
Anthracene		255.81	226.79	± 0.95	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
Oxochloronium		1150.86	1150.70	± 0.66	kJ/mol	51.45155 ± 0.00095	12301-79-0*0
Sulfuric acid			-895.09	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*898
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
Chlorite		-105.51	-107.69	± 0.37	kJ/mol	67.4520 ± 0.0011	14998-27-7*0
Peroxyformic acid		-265.2	-273.1	± 1.4	kJ/mol	62.0248 ± 0.0012	107-32-4*3
Trioxodinitrate anion		-104.2	-107.5	± 1.9	kJ/mol	76.01223 ± 0.00091	194856-62-7*100
Trichlorine cation		1056.6	1055.5	± 1.4	kJ/mol	106.3576 ± 0.0027	33088-85-6*2
1,3-Propanediyl		319.1	307.4	± 1.6	kJ/mol	42.0797 ± 0.0024	32458-33-6*11
Trichloride		-328.5	-327.6	± 1.3	kJ/mol	106.3586 ± 0.0027	18434-33-8*0
Cyclopropylium		1101.54	1088.73	± 0.74	kJ/mol	41.0713 ± 0.0024	1724-43-2*200
Propyne cation		1192.62	1186.89	± 0.38	kJ/mol	40.0633 ± 0.0024	34526-53-9*0
Cyclopropylidene		544.7	535.9	± 1.5	kJ/mol	40.0639 ± 0.0024	2143-70-6*2
Fluoroniumyl ion		1275.555	1275.787	± 0.022	kJ/mol	20.005795 ± 0.000070	12381-92-9*0
Propynylidene cation		1410.9	1413.4	± 1.3	kJ/mol	38.0474 ± 0.0024	75123-91-0*0
Propynylidene		597.4	599.2	± 1.1	kJ/mol	38.0480 ± 0.0024	67152-18-5*4
Propadienylidenide		381.14	382.04	± 0.41	kJ/mol	38.0485 ± 0.0024	109292-49-1*0
1,2-Propadien-1-ylium-1-yl		1561.7	1562.9	± 1.4	kJ/mol	38.0474 ± 0.0024	110714-00-6*0
Nirous oxide cation		1329.70	1326.80	± 0.12	kJ/mol	44.01233 ± 0.00033	12269-46-4*0
Hydrofluorate ion		-75.6	-75.1	± 1.8	kJ/mol	20.006892 ± 0.000070	37249-79-9*0
n-Pentane		-155.83	-172.80	± 0.30	kJ/mol	72.1488 ± 0.0041	109-66-0*500
iso-Pentane			-178.20	± 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
Cyclopentane			-104.96	± 0.41	kJ/mol	70.1329 ± 0.0041	287-92-3*590
2-Methylpentane		-134.47	-173.73	± 0.73	kJ/mol	86.1754 ± 0.0049	107-83-5*0
3-Methylpentane		-131.92	-171.43	± 0.76	kJ/mol	86.1754 ± 0.0049	96-14-0*0
2,3-Dimethylbutane		-136.51	-177.61	± 0.81	kJ/mol	86.1754 ± 0.0049	79-29-8*0
Cyclohexane		-131.80	-155.93	± 0.28	kJ/mol	84.1595 ± 0.0049	110-82-7*500
1,5-Hexadiene		108.52	83.93	± 0.39	kJ/mol	82.1436 ± 0.0049	592-42-7*0
2-Hydroxyethyl		-6.0	-18.4	± 1.5	kJ/mol	45.0605 ± 0.0017	4422-54-2*3
Acetylene anion		356.9	356.7	± 1.9	kJ/mol	26.0378 ± 0.0016	50443-89-5*1
Ethoxy		1.25	-12.17	± 0.42	kJ/mol	45.0605 ± 0.0017	2154-50-9*0
Tetraoxidanyl		2.1	0.4	± 2.9	kJ/mol	65.0055 ± 0.0012	69696-93-1*100
Dihydrooxooxygen cation		994.8	988.1	± 1.6	kJ/mol	34.01413 ± 0.00062	177329-59-8*0
Dicarbon monoxide cation		1433.9	1439.0	± 2.1	kJ/mol	40.0203 ± 0.0016	12287-08-0*0
C=O-C cation		1816.8	1820.9	± 2.0	kJ/mol	40.0203 ± 0.0016	83483-98-1*2
Oxirene anion		288.3	285.3	± 2.2	kJ/mol	42.0372 ± 0.0016	157-18-60
Oxoethylidene		261.1	258.3	± 1.1	kJ/mol	42.0367 ± 0.0016	39920-84-8*1
Ethoxyoxoniumylidene		962.3	945.9	± 1.7	kJ/mol	61.0594 ± 0.0017	268728-77-4*22
2-Hydroperoxyethylium		999.8	988.8	± 1.6	kJ/mol	61.0594 ± 0.0017	84824-62-41
Dihydrogen fluoride		-55.9	-54.9	± 1.6	kJ/mol	21.01428 ± 0.00014	12592-22-2*1
Formic acid anion		-241.2	-246.9	± 1.9	kJ/mol	46.0259 ± 0.0010	19066-82-1*2
Sulfuryl dichloride		-348.00	-354.16	± 0.75	kJ/mol	134.9702 ± 0.0063	7791-25-5*0
Dioxirane cation		1050.8	1043.1	± 2.0	kJ/mol	46.0248 ± 0.0010	232262-10-1*0
Dioxymethyl cation		1074.9	1068.5	± 1.8	kJ/mol	46.0248 ± 0.0010	232262-11-2*0
Chlorine difluoride		22.5	23.9	± 1.9	kJ/mol	73.44951 ± 0.00090	91483-78-2*0
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
Trioxidaniumyl		935.3	926.3	± 1.5	kJ/mol	50.01353 ± 0.00091	161321-37-5*3
Cyanato cation		1261.52	1262.02	± 0.58	kJ/mol	42.01629 ± 0.00086	17247-99-3*0
Nitrosyl fluoride		-85.48	-87.84	± 0.79	kJ/mol	49.00454 ± 0.00031	7789-25-5*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
Hydrogen peroxide cation		931.03	924.18	± 0.98	kJ/mol	34.01413 ± 0.00062	12325-10-9*2
Fluorine atom cation		1758.301	1760.599	± 0.017	kJ/mol	18.99785462 ± 0.00000050	14701-13-4*0
Chlorine oxide peroxide		226.5	227.4	± 2.5	kJ/mol	83.4509 ± 0.0013	141801-67-4*100
Glyoxal		-189.36	-194.80	± 0.71	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
Dimethylaminylium		1040.9	1025.5	± 1.8	kJ/mol	44.0752 ± 0.0017	49784-85-2*0
Nitrosyl nitrate		70.7	62.4	± 1.7	kJ/mol	92.0111 ± 0.0012	15969-55-80
Ethylimidogen		306.1	291.5	± 2.0	kJ/mol	43.0678 ± 0.0016	27770-44-1*0
Trioxidanyl		26.35	23.08	± 0.19	kJ/mol	49.00614 ± 0.00090	12500-78-6*2
Diisocyanogen		610.9	613.2	± 1.7	kJ/mol	52.0349 ± 0.0016	78800-21-2*0
Iminomethide		252.6	248.9	± 1.8	kJ/mol	28.03387 ± 0.00082	90623-30-6*2
Cyanoamidogen anion		391.6	389.4	± 1.8	kJ/mol	41.03267 ± 0.00082	67131-47-9*12
Ethylene anion		232.0	224.4	± 2.0	kJ/mol	28.0537 ± 0.0016	34527-91-8*1
Fluorosyl fluoride anion		-147.1	-146.8	± 3.0	kJ/mol	53.99675 ± 0.00030	86825-57-22
Hydrogen cyanide cation		1442.53	1442.06	± 0.20	kJ/mol	27.02483 ± 0.00081	12601-62-6*0
Diazirenide		454.7	452.0	± 1.5	kJ/mol	41.03267 ± 0.00082	130614-84-5*0
Cyanamide cation		1158.7	1152.4	± 1.5	kJ/mol	42.03951 ± 0.00082	148556-23-4*0
3-Diaziridinylidene		523.0	516.2	± 2.0	kJ/mol	42.04006 ± 0.00082	85513-79-7*1
Diazomethylene		577.8	578.5	± 2.2	kJ/mol	40.02418 ± 0.00081	2468-81-7*0
Nitrilomethylium		1783.13	1786.61	± 0.48	kJ/mol	26.01689 ± 0.00080	12539-57-0*0
Dichloromethylene		313.98	315.19	± 0.90	kJ/mol	82.9161 ± 0.0020	1605-72-7*1
Trioxidanylium		1085.2	1078.9	± 1.4	kJ/mol	49.00559 ± 0.00090	74241-49-9*2
Chloromethyliumyl		1207.4	1207.7	± 2.0	kJ/mol	48.4708 ± 0.0012	89877-51-0*0
Chloromethylene anion		203.53	204.34	± 0.94	kJ/mol	48.4719 ± 0.0012	75466-08-9*0
Chlorohydroxymethyl		-46.2	-51.8	± 2.0	kJ/mol	65.4787 ± 0.0012	147139-06-8*2
1-Chloro ozone anion		-109.0	-111.5	± 2.2	kJ/mol	83.4514 ± 0.0013	224299-15-4*3
(E)-Diazene anion		265.5	258.7	± 2.0	kJ/mol	30.02991 ± 0.00020	59952-06-60
1,1,1,2-Tetrachloroethane			-193.5	± 1.1	kJ/mol	167.8481 ± 0.0039	630-20-6*500
Peroxyimidogen anion		165.0	162.7	± 1.7	kJ/mol	46.00609 ± 0.00060	60488-31-5*0
Hexachloroethane			-214.2	± 2.8	kJ/mol	236.7376 ± 0.0056	67-72-1*500
(Z)-Diazene cation	$[H]/N=[N+]\[H]$	1157.0	1150.1	± 1.3	kJ/mol	30.02881 ± 0.00020	86631-37-0*0
1-Chloro ozone anion		-66.9	-68.8	± 2.1	kJ/mol	83.4514 ± 0.0013	224299-15-4*1
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	$C(\Cl)=C/Cl$	5.63	0.21	± 0.55	kJ/mol	96.9427 ± 0.0024	156-60-5*0
Peroxyimidogen cation		1409.7	1406.8	± 1.9	kJ/mol	46.00499 ± 0.00060	60488-32-60
Bromine dioxide		165.6	156.0	± 2.1	kJ/mol	111.9028 ± 0.0012	21255-83-4*0
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		95.93	96.46	± 0.61	kJ/mol	32.01759 ± 0.00080	71267-42-0*0
Polytetrafluoroethylene			-830.25	± 0.55	kJ/mol	100.0150 ± 0.0016	9002-84-0*591
1-Hydrazinylium-1-yl		1143.4	1136.4	± 1.4	kJ/mol	30.02881 ± 0.00020	63986-30-1*0
trans-1,2-Difluoroethene		-299.60	-306.04	± 0.89	kJ/mol	64.0341 ± 0.0016	1630-78-0*0
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
Perchloryloxy		248.4	240.8	± 1.8	kJ/mol	99.4503 ± 0.0015	12133-63-0*0
Formyl fluoride		-405.2	-403.7	± 1.6	kJ/mol	47.00905 ± 0.00085	62227-71-8*0
Fluoroisoformyl cation		1347.4	1349.5	± 1.9	kJ/mol	47.00795 ± 0.00085	1871-25-60
Perchlorate		-263.9	-272.8	± 2.1	kJ/mol	99.4508 ± 0.0015	14797-73-0*0
o-Benzyne cation		1392.8	1384.8	± 1.7	kJ/mol	76.0954 ± 0.0048	70220-84-7*0
Diazenide		347.5	344.6	± 1.6	kJ/mol	29.02197 ± 0.00016	71004-29-0*1
m-Benzyne cation		1364.7	1356.2	± 1.8	kJ/mol	76.0954 ± 0.0048	121058-08-0*0
p-Benzyne		603.5	594.2	± 1.2	kJ/mol	76.0960 ± 0.0048	3355-34-8*1
Ethynylene cation		1964.96	1971.54	± 0.40	kJ/mol	24.0209 ± 0.0016	12595-79-8*0
Fluorodioxidenium		1221.9	1219.5	± 2.0	kJ/mol	50.99665 ± 0.00060	139584-95-5*0
Aminyliumyl		1659.04	1659.96	± 0.24	kJ/mol	15.014131 ± 0.000099	19067-62-0*0
1,3-Cycloheptadiene		123.54	94.43	± 0.78	kJ/mol	94.1543 ± 0.0056	4054-38-0*1
Tropylium		898.9	879.1	± 1.1	kJ/mol	91.1299 ± 0.0056	26811-28-9*0
Hexafluorobenzene		-997.33	-983.54	± 0.87	kJ/mol	186.0546 ± 0.0048	392-56-3*500
Dihydrogen fluoride anion		-61.9	-60.5	± 3.2	kJ/mol	21.01483 ± 0.00014	117339-92-1*2
Hydroxylamine		-15.4	-25.9	± 1.4	kJ/mol	33.02996 ± 0.00037	7803-49-8*2
cis-1,2-Dibromoethene	$C(\Br)=C\Br$	121.2	100.6	± 2.0	kJ/mol	185.8453 ± 0.0026	590-11-4*0
1,1-Dibromoethane		-5.2	-32.2	± 1.8	kJ/mol	187.8612 ± 0.0026	557-91-5*0
Hydroxylamine cation		857.7	847.9	± 1.6	kJ/mol	33.02941 ± 0.00037	62675-55-2*0
Chlorine difluoride anion		-504.9	-505.8	± 1.9	kJ/mol	73.45005 ± 0.00090	16892-05-0*0
Fluorodioxidanide		-256.8	-256.1	± 1.9	kJ/mol	50.99775 ± 0.00060	23553-17-5*0
Carbamoyl		74.1	67.6	± 2.7	kJ/mol	44.03272 ± 0.00087	2858-51-71
Formaldiminoxy		160.8	153.9	± 1.5	kJ/mol	44.03272 ± 0.00087	2683-96-7*0
Formaldoxime		50.6	39.8	± 1.8	kJ/mol	45.04066 ± 0.00088	75-17-2*2
Oxaziridine		115.5	103.7	± 2.1	kJ/mol	45.04066 ± 0.00088	6827-26-5*0
Cyanoethynyl		715.7	722.1	± 1.1	kJ/mol	50.0388 ± 0.0024	62435-43-2*0
Iodine		198.109	197.709	± 0.0021	kJ/mol	126.904470 ± 0.000030	14362-44-8*2
Nitrogen hydride oxide		71.2	60.0	± 1.5	kJ/mol	33.02996 ± 0.00037	38544-48-8*0
Deuterium atom cation		1532.210	1534.123	± 0.000	kJ/mol	2.01355319809 ± 0.00000000040	14464-47-2*0
2-Methylene-2H-azirine		404.2	396.9	± 1.7	kJ/mol	53.0627 ± 0.0024	110027-86-6*0
Nitric acid		-179.01	-173.28	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*500
2-Cyanovinylium		1517.4	1515.2	± 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
Methyleneoxonium cation		827.7	818.3	± 1.7	kJ/mol	32.04131 ± 0.00090	177788-17-90
2-Isocyanovinyl		544.6	542.6	± 1.7	kJ/mol	52.0547 ± 0.0024	225798-14-1*2
Cyanomethylene		529.3	530.4	± 1.3	kJ/mol	39.0361 ± 0.0016	2612-62-6*2
Aminooxy cation		945.96	938.83	± 0.76	kJ/mol	32.02147 ± 0.00034	51375-41-80
Isocyanomethylene		586.1	587.2	± 1.7	kJ/mol	39.0361 ± 0.0016	78694-65-2*2
Hydroxymethanide		9.5	2.9	± 1.7	kJ/mol	31.03447 ± 0.00088	55830-71-2*0
3-Methylcycloprop-3-en-2-ylium-1-yl		1283.9	1277.4	± 1.5	kJ/mol	52.0740 ± 0.0032	185841-59-20
Dioxofluorine		523.9	523.2	± 1.0	kJ/mol	50.99720 ± 0.00060	175861-93-5*0
Vinylvinylidene cation		1429.8	1424.1	± 2.0	kJ/mol	52.0740 ± 0.0032	161054-20-2*1
1,2-Butadien-1-ylidene		511.8	506.2	± 2.1	kJ/mol	52.0746 ± 0.0032	119908-55-3*2
Trifluoride ion		-348.8	-349.7	± 2.6	kJ/mol	56.9957582 ± 0.0000015	25730-99-8*0
1-Buten-3-ynylium		1482.3	1479.8	± 1.5	kJ/mol	51.0661 ± 0.0032	84654-85-3*1
3-Buten-1-ynylium		1572.6	1570.2	± 1.7	kJ/mol	51.0661 ± 0.0032	103928-84-3*1
Hydroxyaminylium		1048.5	1041.3	± 2.6	kJ/mol	32.02147 ± 0.00034	66097-71-0*2
3-Methylene-1-cyclopropen-1-ylium		1398.7	1395.4	± 1.7	kJ/mol	51.0661 ± 0.0032	117469-28-0*2
Formaldehyde		-105.392	-109.232	± 0.095	kJ/mol	30.02598 ± 0.00087	50-00-0*2
Hydroxyamidogen anion		90.7	84.8	± 2.8	kJ/mol	32.02257 ± 0.00034	66097-71-00
Butyraldehyde		-185.33	-205.70	± 0.85	kJ/mol	72.1057 ± 0.0033	123-72-8*0
Chloroallene		181.8	175.1	± 1.6	kJ/mol	74.5086 ± 0.0026	3223-70-9*0
1-Chloropropyne		191.9	187.8	± 1.6	kJ/mol	74.5086 ± 0.0026	7747-84-4*0
Methylcyclopentane		-68.62	-106.14	± 0.36	kJ/mol	84.1595 ± 0.0049	96-37-7*0
Dioxosilane		-906.76	-911.74	± 0.64	kJ/mol	60.08430 ± 0.00067	7631-86-9*500
Dioxosilane		-826.31	-902.24	± 0.65	kJ/mol	60.08430 ± 0.00067	7631-86-9*520
Silicon carbide cation		1602.0	1606.7	± 2.6	kJ/mol	40.09565 ± 0.00085	78393-58-5*0
Silyliumyl		1155.45	1153.83	± 0.96	kJ/mol	30.10083 ± 0.00033	28149-31-7*0
Disilanyl anion		63.4	51.1	± 2.2	kJ/mol	61.21125 ± 0.00069	53199-49-8*0
Disilene		393.3	384.8	± 2.3	kJ/mol	60.20276 ± 0.00066	15435-77-5*1
Ammonium hydroxide		-360.45	-361.53	± 0.57	kJ/mol	35.04584 ± 0.00047	1336-21-6*500
Azidonitrene		660.8	657.6	± 1.6	kJ/mol	56.02696 ± 0.00028	147363-92-6*1
Di-mu-hydrodihydrodisilicon		385.4	375.0	± 2.7	kJ/mol	60.20276 ± 0.00066	129970-82-7*22
Iodosilane		6.9	-2.8	± 2.6	kJ/mol	158.01379 ± 0.00037	13598-42-0*0
Ammonium hydroxide			-362.830	± 0.061	kJ/mol	35.04584 ± 0.00047	1336-21-6*800
Trimethylsilanide		-42.0	-65.4	± 2.2	kJ/mol	73.1896 ± 0.0025	54711-92-1*0
Bifluoride		-705.22	-709.07	± 0.35	kJ/mol	39.005295 ± 0.000070	18130-74-0*0
Oxadiazirine anion		95.1	95.5	± 2.9	kJ/mol	44.01343 ± 0.00033	350586-31-1*0
(3E)-1,3-Hexadien-5-yne		358.7	346.4	± 1.9	kJ/mol	78.1118 ± 0.0048	5222-77-5*0
Divinylacetylene		361.7	350.3	± 2.0	kJ/mol	78.1118 ± 0.0048	821-08-9*2
1,2,4-Cyclohexatriene		419.4	403.6	± 2.0	kJ/mol	78.1118 ± 0.0048	124869-33-6*0
Pentatetraene		452.7	448.7	± 1.6	kJ/mol	64.0853 ± 0.0040	21986-03-8*0
Hydroxymethylene cation		986.4	982.8	± 1.6	kJ/mol	30.02543 ± 0.00087	135395-06-1*2
Hydrogen fluoride			-321.86	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*902
Hydroxymethylene cation		1482.1	1479.4	± 1.9	kJ/mol	30.02543 ± 0.00087	135395-06-1*3
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
Hydroxymethylene anion		160.2	157.5	± 1.7	kJ/mol	30.02653 ± 0.00087	207914-87-2*2
Hydroxymethylene anion		334.0	334.8	± 2.1	kJ/mol	30.02653 ± 0.00087	207914-87-2*3
Ethane cation		1043.15	1029.14	± 0.59	kJ/mol	30.0685 ± 0.0017	34488-65-8*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	1104.51	± 0.68	kJ/mol	84.8074 ± 0.1000	37276-90-7*0
Monosulfur cation		1276.48	1278.26	± 0.14	kJ/mol	32.0655 ± 0.0060	14701-12-3*0
Oxosulfur		999.33	999.93	± 0.13	kJ/mol	48.0649 ± 0.0060	767269-11-4*0
Dioxaziridinyl cation		1365.8	1363.3	± 1.7	kJ/mol	46.00499 ± 0.00060	66252-29-70
Hydrosulfide		-80.48	-80.48	± 0.19	kJ/mol	33.0745 ± 0.0060	15035-72-0*0
Nitrous acid		-72.971	-78.627	± 0.079	kJ/mol	47.01348 ± 0.00061	7782-77-6*0
Sulfuric acid			-887.12	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*825
Sulfuric acid			-899.15	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*846
Dioxaziridinyl anion		295.9	293.4	± 1.6	kJ/mol	46.00609 ± 0.00060	66252-31-1*0
Hydrogen sulfate		-942.4	-952.9	± 1.9	kJ/mol	97.0721 ± 0.0061	14996-02-2*0
Hydrogen sulfite		-684.1	-691.4	± 1.9	kJ/mol	81.0727 ± 0.0061	15181-46-1*0
Platinum		563.4	564.3	± 1.7	kJ/mol	195.0780 ± 0.0020	7440-06-4*0
Aquacarbon		467.6	465.5	± 1.9	kJ/mol	30.02598 ± 0.00087	81434-73-3*102
Aquacarbon cation		1196.1	1193.0	± 1.7	kJ/mol	30.02543 ± 0.00087	81434-73-30
Cyclopentene			7.04	± 0.51	kJ/mol	68.1170 ± 0.0040	142-29-0*590
Cyclohexene		27.18	-4.28	± 0.32	kJ/mol	82.1436 ± 0.0049	110-83-8*0
Cyclohexene		-21.97	-37.84	± 0.30	kJ/mol	82.1436 ± 0.0049	110-83-8*500
Nirous oxide anion		99.3	96.7	± 1.9	kJ/mol	44.01343 ± 0.00033	12274-12-3*0
1-Hydroxyethanide		-20.3	-33.7	± 2.2	kJ/mol	45.0610 ± 0.0017	88032-18-2*0
Acetylene anion		380.1	380.4	± 1.9	kJ/mol	26.0378 ± 0.0016	50443-89-5*2
(Methylmethylene)oxonium		685.8	671.6	± 2.2	kJ/mol	45.0600 ± 0.0017	23653-97-6*0
Methoxymethyl anion		23.3	10.3	± 2.3	kJ/mol	45.0610 ± 0.0017	61192-30-1*0
Acetaldehyde anion		-62.2	-72.4	± 2.2	kJ/mol	44.0531 ± 0.0017	60427-04-5*0
Hydrogen chloride			-166.562	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*839
Hydrogen bromide			-120.65	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*844
Ketene cation		882.21	879.04	± 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
Methylammoniumyl		865.98	852.04	± 0.25	kJ/mol	31.05659 ± 0.00088	34516-31-9*0
Oxoethenylium		1139.7	1142.4	± 2.1	kJ/mol	41.0282 ± 0.0016	92056-63-8*0
Methylamine anion		84.2	69.4	± 2.8	kJ/mol	31.05769 ± 0.00088	81096-79-9*0
Hydrogen chloride			-166.603	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*954
Hydroxyoxoammoniumyl		984.1	977.7	± 1.7	kJ/mol	47.01293 ± 0.00061	80371-48-8*0
Aminomethyl anion		209.5	199.2	± 2.1	kJ/mol	30.04975 ± 0.00085	74215-21-7*0
Methylaminilium		1135.2	1125.4	± 2.1	kJ/mol	30.04865 ± 0.00085	49784-84-1*0
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		833.7	819.7	± 2.0	kJ/mol	48.0407 ± 0.0010	112465-88-0*0
Methoxyoxoniumylidene		1012.32	1003.49	± 0.67	kJ/mol	47.0328 ± 0.0010	86475-50-5*0
Hydrogen fluoride			-321.93	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*821
Ethylperoxy		-5.47	-21.58	± 0.88	kJ/mol	61.0599 ± 0.0017	3170-61-4*1
Methyliumylamino		1056.1	1049.2	± 1.7	kJ/mol	29.04071 ± 0.00083	65130-65-6*0
Hydrogen carbonate			-689.862	± 0.039	kJ/mol	61.0174 ± 0.0012	71-52-3*800
Azanidylmethyl		224.4	217.1	± 2.2	kJ/mol	29.04181 ± 0.00083	127593-73-1*0
Aminomethyliumyl		1039.5	1031.8	± 2.3	kJ/mol	29.04071 ± 0.00083	89302-94-3*0
Formic acid		-431.50	-424.67	± 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		54.9	49.7	± 1.5	kJ/mol	46.0259 ± 0.0010	93207-29-5*0
Aminomethylene anion		353.0	346.1	± 2.3	kJ/mol	29.04181 ± 0.00083	207914-86-1*0
Triiodine cation		946.1	941.0	± 4.1	kJ/mol	380.712861 ± 0.000090	12596-32-6*0
iso-Proplylide		128.8	110.4	± 1.5	kJ/mol	43.0882 ± 0.0024	25012-80-0*0
H-CO2 vdW complex		-178.3	-177.5	± 2.1	kJ/mol	45.0174 ± 0.0010	2564-83-2100
Tribromine		156.0	134.3	± 3.2	kJ/mol	239.7120 ± 0.0030	11094-39-6*0
Hydrogen chloride			-166.634	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*840
2-Propanol		-305.40	-318.20	± 0.27	kJ/mol	60.0950 ± 0.0025	67-63-0*500
1-Propanol		-290.39	-302.57	± 0.23	kJ/mol	60.0950 ± 0.0025	71-23-8*500
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		-484.03	-483.60	± 0.18	kJ/mol	60.0520 ± 0.0017	64-19-7*500
Hydrogen chloride			-165.544	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*953
Acetic acid			-484.61	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*825
Acetic acid			-484.82	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*840
Methylimidogen anion		321.1	313.4	± 1.3	kJ/mol	29.04181 ± 0.00083	82539-34-2*0
Tribromide		-287.5	-308.5	± 1.9	kJ/mol	239.7125 ± 0.0030	14522-80-6*0
Chloroniumyl ion		1137.798	1137.732	± 0.0051	kJ/mol	36.46009 ± 0.00090	12258-94-5*0
Peroxychloric acid		76.6	68.4	± 2.5	kJ/mol	100.4582 ± 0.0015	177778-91-5*0
Methyleneaminylium		1456.7	1453.1	± 2.1	kJ/mol	28.03277 ± 0.00082	53518-13-1*1
Ethyl formate			-426.0	± 1.1	kJ/mol	74.0785 ± 0.0025	109-94-4*500
Fluorosyl fluoride cation		1413.1	1413.4	± 3.5	kJ/mol	53.99566 ± 0.00030	86825-50-51
Carbon tetracation		14993.612	14998.759	± 0.051	kJ/mol	12.00851 ± 0.00080	16092-62-9*0
Propionic acid		-415.5	-433.1	± 1.3	kJ/mol	74.0785 ± 0.0025	79-09-4*2
Nitrosyl nitrate		48.3	40.4	± 1.8	kJ/mol	92.0111 ± 0.0012	15969-55-8*1
Nitric acid cation		1029.15	1020.09	± 0.69	kJ/mol	63.01233 ± 0.00091	272109-63-4*0
Hydrogen chloride			-165.945	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*907
(1Z)-Ethanimine		58.8	44.2	± 1.4	kJ/mol	43.0678 ± 0.0016	56003-82-8*0
(E)-2-Iminoethylium		1108.3	1097.6	± 3.0	kJ/mol	42.0594 ± 0.0016	91127-33-2*22
2-Iminoethyl anion		104.5	93.5	± 2.1	kJ/mol	42.0604 ± 0.0016	73843-87-5*1
Hydrogen chloride			-165.554	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*825
Fluoronium		774.04	771.10	± 0.91	kJ/mol	21.01373 ± 0.00014	12206-67-6*0
Cyanogen cation		1598.24	1600.46	± 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
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
Chlorine difluoride cation		1346.3	1344.9	± 2.1	kJ/mol	73.44896 ± 0.00090	86825-59-4*0
Aminomethyliumylidene		1168.3	1165.1	± 2.2	kJ/mol	28.03277 ± 0.00082	86784-42-1*0
Diazirinyl		557.1	553.8	± 2.0	kJ/mol	41.03212 ± 0.00082	69967-71-1*2
Diazenium		968.64	957.37	± 0.73	kJ/mol	31.03675 ± 0.00025	37369-93-0*0
Iminomethylimidogen anion		401.7	398.5	± 2.3	kJ/mol	41.03267 ± 0.00082	150296-30-3*2
1H-Diazirin-3-ylium		1527.1	1523.6	± 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		379.7	376.6	± 2.0	kJ/mol	41.03267 ± 0.00082	735234-64-72
Nitric acid			-197.78	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*805
Methanediimine cation		1137.8	1133.1	± 2.2	kJ/mol	42.03951 ± 0.00082	1189338-16-6*2
Hypofluorous acid cation		1142.02	1139.01	± 0.87	kJ/mol	36.00519 ± 0.00031	90243-22-4*0
Diazomethane cation		1141.84	1135.56	± 0.87	kJ/mol	42.03951 ± 0.00082	58852-13-4*0
Ethylene anion		231.6	225.5	± 2.0	kJ/mol	28.0537 ± 0.0016	34527-91-8*2
3H-Diazirine cation		1327.5	1321.9	± 1.7	kJ/mol	42.03951 ± 0.00082	796039-16-2*0
1H-Diazirene cation		1333.5	1326.5	± 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		1480.3	1474.3	± 2.5	kJ/mol	42.03951 ± 0.00082	85513-79-71
Water			-285.801	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*589
Trichloromethylium		856.11	854.59	± 0.93	kJ/mol	118.3683 ± 0.0028	27130-34-3*0
Carbon		711.396	716.881	± 0.041	kJ/mol	12.01070 ± 0.00080	7440-44-0*1
Hydrogen fluoride			-321.33	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*809
Hypofluorous acid anion		155.3	154.7	± 2.6	kJ/mol	36.00629 ± 0.00031	36505-07-4*2
Dichloromethyliumyl		1122.0	1122.9	± 1.8	kJ/mol	82.9156 ± 0.0020	55945-51-2*0
Dinitrogen pentoxide			-41.12	± 0.38	kJ/mol	108.0105 ± 0.0015	10102-03-1*500
Ethylidene anion		325.7	318.4	± 1.8	kJ/mol	28.0537 ± 0.0016	35829-99-3*0
1,1,1-Trichloroethane		-183.86	-177.21	± 0.52	kJ/mol	133.4033 ± 0.0031	71-55-6*500
Carbon		833.327	838.474	± 0.041	kJ/mol	12.01070 ± 0.00080	7440-44-0*2
Vinyl chloride		-3.61	0.95	± 0.91	kJ/mol	62.4979 ± 0.0018	75-01-4*500
Hydrogen bromide			-120.35	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*834
Chloromethane cation		1014.53	1007.76	± 0.16	kJ/mol	50.4867 ± 0.0012	12538-71-5*0
Fluorosyl fluoride anion		-56.6	-55.7	± 2.4	kJ/mol	53.99675 ± 0.00030	86825-57-21
Isocyanomethylium		1272.7	1270.5	± 2.2	kJ/mol	40.0435 ± 0.0016	78269-43-9*0
Bromofluoromethane		-197.4	-211.9	± 4.9	kJ/mol	112.9290 ± 0.0013	373-52-4*0
2-Chloro ozone anion		-103.6	-105.9	± 3.2	kJ/mol	83.4514 ± 0.0013	141801-67-40
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		1350.757	1350.756	± 0.000	kJ/mol	83.7995 ± 0.1000	16915-28-9*0
Ammonium radical		190.01	179.43	± 0.43	kJ/mol	18.03850 ± 0.00029	92075-50-8*0
1-Propenylidene		630.4	622.9	± 1.7	kJ/mol	40.0639 ± 0.0024	70277-78-0*2
Bromine atom		117.911	111.848	± 0.056	kJ/mol	79.90400 ± 0.00100	10097-32-2*1
Hydrogen fluoride			-321.97	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*823
1,2-Difluoroacetylene cation		1081.7	1084.5	± 1.3	kJ/mol	62.0177 ± 0.0016	268566-70-7*0
Difluorophosgene cation		653.42	650.66	± 0.51	kJ/mol	66.00636 ± 0.00085	73256-56-1*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		119.2	117.9	± 2.7	kJ/mol	64.4707 ± 0.0012	331419-80-8*2
Dibromophosgene			-144.33	± 0.95	kJ/mol	187.8181 ± 0.0022	593-95-3*590
2-Chloroethanol			-314.92	± 0.53	kJ/mol	80.5132 ± 0.0019	107-07-3*590
2-Bromoethanol			-274.69	± 0.46	kJ/mol	124.9645 ± 0.0019	540-51-2*590
Phenylium		1149.11	1136.33	± 0.85	kJ/mol	77.1034 ± 0.0048	17333-73-2*2
m-Benzyne anion		444.2	435.3	± 1.3	kJ/mol	76.0965 ± 0.0048	249589-31-9*0
p-Benzyne anion		465.0	455.5	± 1.3	kJ/mol	76.0965 ± 0.0048	219298-17-6*0
Cycloheptane		-126.67	-156.56	± 0.50	kJ/mol	98.1861 ± 0.0057	291-64-5*500
Ethylbenzene			-12.38	± 0.53	kJ/mol	106.1650 ± 0.0064	100-41-4*500
Phenylacetylene			273.94	± 0.73	kJ/mol	102.1332 ± 0.0064	536-74-3*500
Chlorine difluoride anion		-319.0	-319.0	± 2.2	kJ/mol	73.45005 ± 0.00090	91419-41-9*0
Phenyloxoniumylidene		901.5	887.1	± 2.2	kJ/mol	93.1028 ± 0.0048	41071-17-4*0
Anisole		-47.72	-72.56	± 0.79	kJ/mol	108.1378 ± 0.0056	100-66-3*0
Dioxygen		0.000	0.000	± 0.000	kJ/mol	31.99880 ± 0.00060	7782-44-7*1
Imidogen anion		322.62	322.67	± 0.16	kJ/mol	15.015229 ± 0.000099	23841-33-0*0
Imidogen		358.74	358.79	± 0.16	kJ/mol	15.014680 ± 0.000099	13774-92-0*1
Dibromine			-2.25	± 0.18	kJ/mol	159.8080 ± 0.0020	7726-95-6*800
Deuterium hydride cation		1490.498	1490.587	± 0.000	kJ/mol	3.021493 ± 0.000070	12181-16-7*0
Fluorobenzene		-148.77	-146.35	± 0.39	kJ/mol	96.1023 ± 0.0048	462-06-6*500
1,2-Propadien-1-yl-3-ylidene anion		621.5	628.9	± 1.2	kJ/mol	36.0326 ± 0.0024	109292-47-9*0
Bromobenzene			60.2	± 1.3	kJ/mol	157.0079 ± 0.0049	108-86-1*500
Cyanogen bromide anion		57.7	54.1	± 3.8	kJ/mol	105.9220 ± 0.0013	54092-05-6*0
2-Cyclopropyn-1-ylidene		993.0	999.9	± 2.5	kJ/mol	36.0321 ± 0.0024	102508-15-6*2
Ammonium chloride		-311.553	-314.715	± 0.062	kJ/mol	53.49120 ± 0.00095	12125-02-9*510
Pyridinium		761.7	740.8	± 1.3	kJ/mol	80.1073 ± 0.0040	16969-45-2*0
Acetone		-244.60	-247.72	± 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
2-Cyclopropyn-1-yl anion		664.5	671.8	± 1.6	kJ/mol	36.0326 ± 0.0024	500574-36-7*0
Ammonium bromide		-253.60	-270.18	± 0.16	kJ/mol	97.9425 ± 0.0010	12124-97-9*510
Propionaldehyde		-218.04	-216.58	± 0.27	kJ/mol	58.0791 ± 0.0025	123-38-6*500
2-Propenylidyne anion		464.6	460.9	± 1.7	kJ/mol	39.0565 ± 0.0024	120126-89-8*0
Ethyl nitrite		-81.24	-98.64	± 0.87	kJ/mol	75.0666 ± 0.0017	109-95-5*0
trans-1,2-Dibromoethene	$C(\Br)=C/Br$	121.4	101.7	± 2.0	kJ/mol	185.8453 ± 0.0026	590-12-5*0
1,1-Dibromoethene		125.3	105.0	± 2.1	kJ/mol	185.8453 ± 0.0026	593-92-0*0
Norbornadiene		267.65	242.21	± 0.98	kJ/mol	92.1384 ± 0.0056	121-46-0*0
Monoammonium succinate			-1067.84	± 0.72	kJ/mol	135.1186 ± 0.0035	38457-08-8*510
Diammonium succinate			-1182.35	± 0.48	kJ/mol	152.1492 ± 0.0035	2226-88-2*510
2-Propen-3-yliumylidene		1494.5	1491.5	± 1.7	kJ/mol	39.0554 ± 0.0024	84654-86-4*0
Acrolein		-46.4	-56.8	± 1.3	kJ/mol	56.0633 ± 0.0024	107-02-8*2
2H-Oxete		65.7	53.2	± 1.2	kJ/mol	56.0633 ± 0.0024	287-25-2*0
2-Propenylidene anion		535.9	532.6	± 1.7	kJ/mol	39.0565 ± 0.0024	98705-30-7*0
1-Formylethenylium		1023.5	1018.0	± 2.3	kJ/mol	55.0548 ± 0.0024	101705-89-9*2
Chlorosyl chloride cation		1132.6	1130.8	± 2.0	kJ/mol	86.9043 ± 0.0018	86825-56-10
3-Oxo-1-propenylium		1005.1	1002.8	± 2.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*2
Chlorosyl chloride anion		-185.4	-184.7	± 2.3	kJ/mol	86.9053 ± 0.0018	86825-55-00
Ethenedione cation		909.5	912.7	± 2.0	kJ/mol	56.0197 ± 0.0017	12541-99-0*0
Methanol anion		-89.1	-99.8	± 2.8	kJ/mol	32.04241 ± 0.00090	68474-04-4*0
Hydrogen fluoride			-321.82	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*901
3-Imino-2-propen-1-ylidene		532.9	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
Triazirinylium ion		1608.8	1605.9	± 1.6	kJ/mol	42.01967 ± 0.00021	92220-05-8*0
Propynylidene		543.47	546.47	± 0.65	kJ/mol	38.0480 ± 0.0024	67152-18-5*0
Chloryl chloride		126.1	122.1	± 1.7	kJ/mol	102.9042 ± 0.0019	117489-73-3*0
Tetraoxygen		145.8	142.2	± 3.8	kJ/mol	63.9976 ± 0.0012	12596-83-7*22
Butatriene cation		1210.5	1204.6	± 1.3	kJ/mol	52.0740 ± 0.0032	65513-85-1*0
Aminooxy anion		47.3	40.4	± 1.7	kJ/mol	32.02257 ± 0.00034	51375-41-8*0
1-Cyclopropene-1,2-diyl		791.0	790.6	± 1.5	kJ/mol	38.0480 ± 0.0024	202744-75-0*0
Bicyclo[1.1.0]but-3-ene		483.1	474.2	± 1.6	kJ/mol	52.0746 ± 0.0032	78525-41-4*0
3-Methanetetrayl-1,2-cyclopropanediylidene		1154.6	1164.1	± 1.9	kJ/mol	48.0428 ± 0.0032	78015-08-4*0
Vinylvinylidene anion		405.7	399.0	± 2.0	kJ/mol	52.0751 ± 0.0032	167386-49-4*1
Tetrahedrane cation		1326.7	1318.5	± 1.7	kJ/mol	52.0740 ± 0.0032	80826-01-3*0
Bicyclo[1.1.0]but-1(3)-ene		578.7	570.3	± 1.9	kJ/mol	52.0746 ± 0.0032	58208-49-4*0
Bicyclo[1.1.0]but-1(3)-ene cation		1461.6	1453.5	± 2.1	kJ/mol	52.0740 ± 0.0032	58208-49-40
Triazirine		464.1	457.6	± 2.6	kJ/mol	43.02816 ± 0.00022	157-29-9*0
1-Buten-3-yn-1-yl		547.7	545.0	± 1.2	kJ/mol	51.0666 ± 0.0032	2810-61-9*2
2-Cyclopropyn-1-ylidenemethyl anion		800.7	809.7	± 1.7	kJ/mol	48.0433 ± 0.0032	289679-90-9*0
3-Buten-1-ynylium		1603.8	1602.8	± 1.7	kJ/mol	51.0661 ± 0.0032	103928-84-3*2
Cyclopropenyliumdiyl		1692.1	1695.0	± 1.9	kJ/mol	37.0395 ± 0.0024	127476-05-5*0
Cyclopropynyl anion		518.08	521.07	± 0.88	kJ/mol	37.0406 ± 0.0024	136861-42-2*0
3-Methylene-1-cyclopropen-1-ylium		1467.5	1463.9	± 1.6	kJ/mol	51.0661 ± 0.0032	117469-28-0*1
Formaldehyde anion		-26.7	-28.3	± 2.0	kJ/mol	30.02653 ± 0.00087	27837-46-3*0
Hydrogen bromide			-120.49	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*954
2-Cyclopropen-1-ylidenemethylium		1346.3	1343.8	± 1.8	kJ/mol	51.0661 ± 0.0032	112936-36-4*2
Nitrate			-206.57	± 0.18	kJ/mol	62.00549 ± 0.00090	14797-55-8*800
1,3-Cyclobutadien-1-ylium		1388.2	1383.3	± 1.9	kJ/mol	51.0661 ± 0.0032	81913-77-1*2
Cyanic azide		502.6	498.2	± 1.9	kJ/mol	68.03766 ± 0.00085	764-05-6*0
Hydroperoxyimidogen		103.4	99.8	± 2.4	kJ/mol	47.01348 ± 0.00061	877456-58-1*1
Phenyl hydroperoxide		13.3	-5.7	± 2.1	kJ/mol	110.1106 ± 0.0049	36112-26-2*0
Trifluorine cation		1529.5	1527.4	± 2.3	kJ/mol	56.9946610 ± 0.0000015	64710-22-1*0
Dioxodiazoxane		109.4	105.3	± 1.8	kJ/mol	76.01168 ± 0.00091	122413-35-8*2
Methylcyclopentane		-116.57	-137.92	± 0.35	kJ/mol	84.1595 ± 0.0049	96-37-7*500
Formaldehyde		195.999	192.696	± 0.095	kJ/mol	30.02598 ± 0.00087	50-00-0*1
Dioxosilane		-904.06	-908.92	± 0.69	kJ/mol	60.08430 ± 0.00067	7631-86-9*510
Ozone cation		1352.880	1350.541	± 0.041	kJ/mol	47.99765 ± 0.00090	12596-82-6*0
Silylene anion		167.1	165.5	± 1.4	kJ/mol	30.10193 ± 0.00033	54991-62-7*0
Hydrooxonitrate		78.62	75.71	± 0.99	kJ/mol	31.01463 ± 0.00032	66057-02-1*0
Silyliumylidene		1134.7	1135.9	± 1.1	kJ/mol	29.09289 ± 0.00031	31241-66-4*0
Disilene cation		1069.4	1060.4	± 2.0	kJ/mol	60.20221 ± 0.00066	108492-63-3*0
Trioxidanylium		1070.4	1064.2	± 1.4	kJ/mol	49.00559 ± 0.00090	74241-49-9*0
Di-mu-hydrodihydrodisilicon cation		1180.1	1172.5	± 3.3	kJ/mol	60.20221 ± 0.00066	129970-82-71
Di-mu-hydrodihydrodisilicon anion		288.3	279.7	± 3.4	kJ/mol	60.20331 ± 0.00066	129970-83-81
mu-Hydrotrihydrodisilicon		459.1	450.9	± 2.5	kJ/mol	60.20276 ± 0.00066	497967-55-2*1
Hypochlorous acid cation		998.94	995.90	± 0.90	kJ/mol	52.45949 ± 0.00095	71606-47-8*0
Hydroxyimidogen anion		229.9	227.4	± 2.2	kJ/mol	31.01463 ± 0.00032	35337-59-80
Dewar benzene		422.1	405.0	± 1.7	kJ/mol	78.1118 ± 0.0048	5649-95-6*0
Hydrogen difluoride cation		1174.3	1171.3	± 1.5	kJ/mol	39.004198 ± 0.000070	126950-54-72
1,2-Hexadien-4-yne		407.4	397.4	± 1.7	kJ/mol	78.1118 ± 0.0048	34783-10-3*0
3-Methylene-1-penten-4-yne		362.5	349.9	± 2.2	kJ/mol	78.1118 ± 0.0048	6929-96-0*1
3-Methyl-1,4-pentadiyne		439.0	427.5	± 1.6	kJ/mol	78.1118 ± 0.0048	57242-04-3*0
Tetranitrogen cation		1392.8	1392.5	± 1.5	kJ/mol	56.02641 ± 0.00028	12185-04-5*0
Hypochlorous acid anion		198.7	198.4	± 2.5	kJ/mol	52.46059 ± 0.00095	34524-94-2*0
Ethylaminylium		1092.4	1076.4	± 2.4	kJ/mol	44.0752 ± 0.0017	54387-08-5*11
2-Butynylium		1258.7	1251.4	± 1.6	kJ/mol	53.0820 ± 0.0032	64235-83-2*1
2-Methyl-2-propanamine		-133.10	-150.58	± 0.53	kJ/mol	73.1369 ± 0.0033	75-64-9*500
1,2-Diphenylethane		84.84	51.10	± 0.75	kJ/mol	182.2610 ± 0.0112	103-29-7*500
Nitric acid			-186.84	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*801
Anthracene		150.45	124.64	± 0.90	kJ/mol	178.2292 ± 0.0112	120-12-7*500
Phenanthrene		136.21	110.93	± 0.65	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		334.69	312.74	± 0.93	kJ/mol	178.2292 ± 0.0112	501-65-5*500
Bicyclo[1.1.0]buta-1,1-diene-2,4-diyl		990.3	993.5	± 2.0	kJ/mol	49.0507 ± 0.0032	99417-53-50
Benzoic acid		-274.32	-294.12	± 0.19	kJ/mol	122.1213 ± 0.0056	65-85-0*0
1-Methylene-2-propenylium		1059.4	1049.3	± 1.7	kJ/mol	53.0820 ± 0.0032	62698-26-4*2
1-Methylene-2-propenylium		1256.3	1246.6	± 1.7	kJ/mol	53.0820 ± 0.0032	62698-26-4*1
Argonium		1151.8	1150.1	± 1.4	kJ/mol	40.9554 ± 0.0010	12254-68-1*0
Xenonium		1038.19	1036.41	± 0.88	kJ/mol	132.2974 ± 0.0200	37276-91-8*0
Monosulfur anion		76.48	78.53	± 0.14	kJ/mol	32.0665 ± 0.0060	14337-03-2*0
Sulfur oxide peroxide		-26.0	-30.2	± 2.3	kJ/mol	80.0642 ± 0.0061	175799-68-5*2
Ethanium		888.7	870.3	± 1.8	kJ/mol	31.0764 ± 0.0017	24669-33-8*2
Sulfuric acid			-886.60	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*822
Sulfuric acid			-900.58	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*850
1-Ethylium-1-yl		1182.0	1174.7	± 3.2	kJ/mol	28.0526 ± 0.0016	85944-79-2*0
1,3-Butadienylium		1133.6	1123.6	± 2.5	kJ/mol	53.0820 ± 0.0032	86181-69-3*2
Ethanium		895.1	877.3	± 1.9	kJ/mol	31.0764 ± 0.0017	24669-33-8*3
Hydrogen atom		-22.3	-24.0	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1000001
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
n-Octane		-226.27	-249.39	± 0.53	kJ/mol	114.2285 ± 0.0065	111-65-9*500
Trichlorine		125.3	125.8	± 2.0	kJ/mol	106.3581 ± 0.0027	11094-65-8*0
n-Nonane		-247.56	-274.42	± 0.48	kJ/mol	128.2551 ± 0.0073	111-84-2*500
Perchloryl cation		1252.1	1246.4	± 2.5	kJ/mol	83.4504 ± 0.0013	23594-88-9*0
Hydrogen fluoride			-321.96	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*822
Formyloxidanyl		-125.82	-127.18	± 0.55	kJ/mol	45.0174 ± 0.0010	16499-21-1*0
Dioxiranyl		217.3	213.8	± 2.0	kJ/mol	45.0174 ± 0.0010	120595-16-6*0
Azide			272.58	± 0.48	kJ/mol	42.02077 ± 0.00021	14343-69-2*800
n-Decane		-272.71	-300.25	± 0.79	kJ/mol	142.2817 ± 0.0081	124-18-5*500
Iodine monochloride		-36.511	-35.537	± 0.063	kJ/mol	162.35717 ± 0.00090	7790-99-0*510
Ethoxyethane		-266.21	-278.53	± 0.60	kJ/mol	74.1216 ± 0.0033	60-29-7*500
1,5-Hexadiene			54.56	± 0.31	kJ/mol	82.1436 ± 0.0049	592-42-7*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
Peroxychlorous acid		102.7	96.9	± 2.5	kJ/mol	84.4588 ± 0.0013	177778-92-6*2
Chlorine hydride oxide		163.9	154.0	± 2.4	kJ/mol	84.4588 ± 0.0013	1027055-52-2*0
Dihydrogen fluoride		-56.5	-54.2	± 1.7	kJ/mol	21.01428 ± 0.00014	12592-22-2*2
Nitric acid trihydrate		-1062.03	-1055.18	± 0.20	kJ/mol	117.0587 ± 0.0019	13444-83-2*500
1-Methyl-1-ethylium-1-yl		1058.2	1045.7	± 1.9	kJ/mol	42.0792 ± 0.0024	121408-19-3*0
Glycolaldehyde		-292.3	-304.9	± 1.7	kJ/mol	60.0520 ± 0.0017	141-46-8*21
Glycolaldehyde		-290.6	-303.0	± 1.7	kJ/mol	60.0520 ± 0.0017	141-46-8*31
Glycolaldehyde		-284.0	-296.8	± 1.7	kJ/mol	60.0520 ± 0.0017	141-46-8*22
Tetraoxodinitrogen cation		1030.7	1025.2	± 2.6	kJ/mol	92.0105 ± 0.0012	64476-91-1*0
Hydrogen fluoride			-321.97	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*905
Methyl acetate			-445.64	± 0.56	kJ/mol	74.0785 ± 0.0025	79-20-9*500
1-Hydroxy-2-propanone		-340.7	-360.4	± 1.7	kJ/mol	74.0785 ± 0.0025	116-09-6*21
1-Hydroxy-2-propanone		-338.1	-356.3	± 1.7	kJ/mol	74.0785 ± 0.0025	116-09-6*31
1-Hydroxy-2-propanone		-329.8	-349.7	± 1.7	kJ/mol	74.0785 ± 0.0025	116-09-6*22
Methoxyoxomethyl		-151.7	-160.8	± 1.5	kJ/mol	59.0440 ± 0.0017	16481-04-2*2
Isopropylidene anion		282.5	268.4	± 2.0	kJ/mol	42.0803 ± 0.0024	121408-19-30
Carbon dication		4150.466	4155.612	± 0.041	kJ/mol	12.00960 ± 0.00080	16092-61-8*0
Dihydrogen		1.417	0.019	± 0.000	kJ/mol	2.01588 ± 0.00014	1333-74-0*1
Propionic acid		-505.37	-509.51	± 0.17	kJ/mol	74.0785 ± 0.0025	79-09-4*500
Ethylene glycol		-448.64	-455.16	± 0.37	kJ/mol	62.0678 ± 0.0018	107-21-1*500
Hydrochlorate ion		-25.2	-24.2	± 2.5	kJ/mol	36.46119 ± 0.00090	63099-75-2*0
Oxalic acid		-819.55	-829.64	± 0.42	kJ/mol	90.0349 ± 0.0020	144-62-7*500
Dimethylamine			-42.66	± 0.57	kJ/mol	45.0837 ± 0.0017	124-40-3*500
Hydraziniumyl		886.6	873.3	± 2.0	kJ/mol	32.04469 ± 0.00031	20771-51-1*0
(E)-2-Iminoethylium		1148.6	1138.9	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-33-2*12
Bromoniumyl		1097.83	1089.98	± 0.13	kJ/mol	80.9114 ± 0.0010	12258-64-9*0
1-Iminoethylium		833.7	823.2	± 3.0	kJ/mol	42.0594 ± 0.0016	128365-64-02
1-Iminoethanide		185.6	175.2	± 3.2	kJ/mol	42.0604 ± 0.0016	128365-65-12
1-Iminoethylium		1342.1	1333.2	± 3.9	kJ/mol	42.0594 ± 0.0016	128365-64-012
Hydrazine		57.31	50.74	± 0.18	kJ/mol	32.04524 ± 0.00031	302-01-2*500
N-Methylenemethaniminium		904.3	893.3	± 3.1	kJ/mol	42.0594 ± 0.0016	88333-01-1*2
(Methylimino)methanide		223.0	212.1	± 3.2	kJ/mol	42.0604 ± 0.0016	64709-60-01
2-Aminoethenylium		1110.6	1099.4	± 2.4	kJ/mol	42.0594 ± 0.0016	64724-21-6*12
2-Aminoethenyl anion		230.2	219.3	± 2.6	kJ/mol	42.0604 ± 0.0016	64724-21-62
Aziridine			92.19	± 0.88	kJ/mol	43.0678 ± 0.0016	151-56-4*500
2-Aziridinylium		1010.7	998.7	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-35-42
2-Aziridinide		316.0	303.9	± 3.5	kJ/mol	42.0604 ± 0.0016	111127-93-6*2
2-Aziridinyl		364.4	352.2	± 2.1	kJ/mol	42.0599 ± 0.0016	23838-09-72
2-Aziridinylium		1304.7	1293.0	± 4.1	kJ/mol	42.0594 ± 0.0016	91127-35-412
Trimethylamine			-48.35	± 0.89	kJ/mol	59.1103 ± 0.0025	75-50-3*500
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
Nitric acid monohydrate		-479.14	-472.64	± 0.18	kJ/mol	81.0282 ± 0.0012	13444-82-1*500
Hydrogen difluoride cation		1267.5	1265.4	± 4.1	kJ/mol	39.004198 ± 0.000070	126950-54-71
Cyanoaminyliumyl		1672.3	1673.7	± 2.6	kJ/mol	40.02363 ± 0.00081	316122-03-9*0
Cyanoamidogen anion		211.80	211.73	± 0.60	kJ/mol	40.02473 ± 0.00081	189879-95-6*0
Cyanoaminylium		1460.1	1457.9	± 1.9	kJ/mol	41.03157 ± 0.00082	205443-18-1*2
1-Ethenylium-1-yl		1507.1	1507.1	± 2.1	kJ/mol	26.0367 ± 0.0016	80541-07-7*0
Diazomethanide		479.7	478.2	± 1.8	kJ/mol	41.03267 ± 0.00082	100840-43-5*1
Trifluorine		80.6	81.9	± 2.6	kJ/mol	56.9952096 ± 0.0000015	73455-86-4*0
1H-Diazirin-3-ylium		1640.3	1638.0	± 2.0	kJ/mol	41.03157 ± 0.00082	735234-64-7*1
1H-diazirin-3-ide		655.2	652.0	± 2.1	kJ/mol	41.03267 ± 0.00082	735234-64-71
1H-Diazirin-3-yl		618.7	615.8	± 1.7	kJ/mol	41.03212 ± 0.00082	324529-57-9*0
Methoxymethylene		144.7	134.3	± 1.4	kJ/mol	44.0526 ± 0.0017	19527-10-7*22
Cyanamide			59.03	± 0.52	kJ/mol	42.04006 ± 0.00082	420-04-2*500
Trioxirane		272.7	270.1	± 1.3	kJ/mol	47.99820 ± 0.00090	153851-84-4*0
Oxygen atom hexacation		42035.28	42037.14	± 0.12	kJ/mol	15.99611 ± 0.00030	14158-22-6*0
1-Propenylium		1231.8	1221.5	± 1.7	kJ/mol	41.0713 ± 0.0024	50457-58-4*2
Methylenediazeniumide		375.1	368.6	± 1.9	kJ/mol	42.04006 ± 0.00082	24153-51-3*0
Methylidynehydrazinium-1-yl		1251.7	1245.7	± 1.9	kJ/mol	42.03951 ± 0.00082	160951-16-6*0
(Iminomethyl)imidogen		420.1	413.2	± 3.0	kJ/mol	42.04006 ± 0.00082	87570-07-8*11
1-Propenylide		204.0	192.7	± 1.8	kJ/mol	41.0723 ± 0.0024	65887-20-9*2
Diazomethyliumyl		1639.5	1640.8	± 3.1	kJ/mol	40.02363 ± 0.00081	307495-90-5*0
Diazomethylene anion		406.9	407.1	± 2.4	kJ/mol	40.02473 ± 0.00081	205498-92-6*0
3H-Diazirin-3-ylidene		579.1	579.4	± 2.7	kJ/mol	40.02418 ± 0.00081	253308-70-2*0
2-Hydroxyethenyl		143.82	137.27	± 0.99	kJ/mol	43.0446 ± 0.0016	108665-16-3*11
2-Hydroxyethenyl		147.2	140.9	± 1.2	kJ/mol	43.0446 ± 0.0016	108665-16-3*22
2-Hydroxyethenyl		150.5	144.4	± 1.6	kJ/mol	43.0446 ± 0.0016	108665-16-3*12
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
Dioxygen difluoride		75.1	71.6	± 3.6	kJ/mol	69.99561 ± 0.00060	183051-89-0*0
Acetonitrile			40.64	± 0.22	kJ/mol	41.0520 ± 0.0016	75-05-8*500
Dioxohydrazine		172.93	171.17	± 0.14	kJ/mol	60.01228 ± 0.00062	16824-89-8*2
Tetraoxidanyl		53.0	46.0	± 5.1	kJ/mol	65.0055 ± 0.0012	69696-93-1*2
Oxobromonium		1139.9	1132.1	± 1.6	kJ/mol	95.9029 ± 0.0010	142315-39-7*0
Dioxohydrazine		172.93	171.17	± 0.14	kJ/mol	60.01228 ± 0.00062	16824-89-8*0
Hydrogen chloride			-166.712	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*951
Peroxynitrous acid		-5.78	-11.61	± 0.36	kJ/mol	63.01288 ± 0.00091	14691-52-2*0
Dihydrogen cation		1489.060	1488.480	± 0.000	kJ/mol	2.01533 ± 0.00014	12184-90-6*1
Carbon dioxide anion		-340.6	-340.1	± 2.2	kJ/mol	44.01005 ± 0.00100	14485-07-5*0
Dioxiranylidene cation		1409.1	1410.3	± 2.6	kJ/mol	44.00895 ± 0.00100	138832-57-20
Dioxiranylidene anion		-110.2	-109.7	± 3.0	kJ/mol	44.01005 ± 0.00100	138832-58-30
Poly(vinylchloride)		-84.6	-94.0	± 1.3	kJ/mol	62.4979 ± 0.0018	9002-86-2*500
1,1-Dichloroethene			-23.46	± 0.51	kJ/mol	96.9427 ± 0.0024	75-35-4*500
(Z)-Diazene anion	$[H]/N=[N-]\[H]$	280.0	273.3	± 2.0	kJ/mol	30.02991 ± 0.00020	86631-37-00
Deuterium hydride		0.328	0.319	± 0.000	kJ/mol	3.022042 ± 0.000070	13983-20-5*0
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*833
Dioxymethylidyne cation		1436.6	1439.1	± 2.7	kJ/mol	44.00895 ± 0.00100	791121-04-52
Dichloromethane			-122.80	± 0.36	kJ/mol	84.9320 ± 0.0020	75-09-2*590
Dioxymethylidyne cation		1388.2	1391.7	± 3.2	kJ/mol	44.00895 ± 0.00100	791121-04-5101
Ammonium hydroxide			-366.32	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*822
Ammonia anion		94.3	87.3	± 2.4	kJ/mol	17.03111 ± 0.00022	37353-00-7*0
Carbon dioxide cation		1335.0	1335.5	± 2.4	kJ/mol	44.00895 ± 0.00100	12181-61-2*1
Ammonium hydroxide			-366.19	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*818
Tribromofluoromethane		-99.1	-123.1	± 1.5	kJ/mol	270.7211 ± 0.0031	353-54-8*0
Tribromochloromethane		85.4	62.6	± 1.5	kJ/mol	287.1754 ± 0.0032	594-15-0*0
Isoprene			48.93	± 0.69	kJ/mol	68.1170 ± 0.0040	78-79-5*500
Difluoromethylene anion		-211.16	-209.98	± 0.58	kJ/mol	50.00805 ± 0.00080	66212-40-6*0
Ethynylaminylium		1277.8	1277.4	± 2.6	kJ/mol	40.0435 ± 0.0016	103835-08-1*1
Fluoromethylidyne anion		200.8	204.2	± 1.9	kJ/mol	31.00965 ± 0.00080	33412-12-3*0
Methylamine			-45.19	± 0.44	kJ/mol	31.05714 ± 0.00088	74-89-5*500
Carbon monoxide anion		30.0	33.7	± 2.3	kJ/mol	28.01065 ± 0.00085	12539-63-8*0
Difluorovinylidene		129.4	130.7	± 2.2	kJ/mol	62.0182 ± 0.0016	41895-33-4*0
Isodiazene anion		380.9	374.1	± 2.1	kJ/mol	30.02991 ± 0.00020	63986-30-10
Fluoroethynylium		1536.3	1541.0	± 2.3	kJ/mol	43.0193 ± 0.0016	268566-69-4*0
Bromoacetylene		281.7	275.2	± 1.6	kJ/mol	104.9333 ± 0.0019	593-61-3*0
Chloro(chlorooxy)methylene		98.	101.	± 15.	kJ/mol	98.9155 ± 0.0020	479587-31-0*11
Chlorooxomethylium		783.7	783.8	± 2.2	kJ/mol	63.4623 ± 0.0012	38264-03-8*0
Ammonium hydroxide			-366.30	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*844
2-Iodoethanol			-207.2	± 2.4	kJ/mol	171.9650 ± 0.0017	624-76-0*590
Dioxidanyl dimer		-8.24	-17.81	± 0.50	kJ/mol	66.0135 ± 0.0012	240125-82-0*1
1,3-Butadiyne cation		1440.16	1442.03	± 0.62	kJ/mol	50.0581 ± 0.0032	55468-55-8*0
Bromosyl bromide		180.3	164.5	± 2.1	kJ/mol	175.8074 ± 0.0020	68322-97-4*0
Carbon suboxide cation		928.7	932.2	± 1.1	kJ/mol	68.0304 ± 0.0025	151528-67-5*0
Carbon suboxide anion		-131.2	-127.8	± 2.5	kJ/mol	68.0314 ± 0.0025	109362-94-9*0
Isocyanic fluoride		301.0	302.9	± 1.7	kJ/mol	45.01584 ± 0.00080	16992-26-0*0
Benzene anion		209.2	197.3	± 1.2	kJ/mol	78.1124 ± 0.0048	34562-85-1*0
Carbon monoxide		465.582	469.289	± 0.026	kJ/mol	28.01010 ± 0.00085	630-08-0*1
Hydronium radical		-18.5	-21.5	± 2.1	kJ/mol	19.02322 ± 0.00037	12168-76-2*100
Carbonate		-225.2	-228.4	± 2.5	kJ/mol	60.0100 ± 0.0012	3812-32-6*0
o-Benzyne		625.7	616.3	± 1.1	kJ/mol	76.0960 ± 0.0048	462-80-6*1
Nitrogen atom dianion		1062.7	1064.9	± 2.8	kJ/mol	14.007837 ± 0.000070	16727-21-2*0
1-Propynylium		1547.1	1545.1	± 3.1	kJ/mol	39.0554 ± 0.0024	24858-94-4*0
m-Benzyne		527.0	518.5	± 1.2	kJ/mol	76.0960 ± 0.0048	1828-89-3*0
Nitrosyl nitrite anion		-103.0	-106.2	± 2.8	kJ/mol	76.01223 ± 0.00091	122413-35-81
p-Benzyne cation		1424.9	1417.7	± 2.1	kJ/mol	76.0954 ± 0.0048	121058-09-1*0
p-Benzyne		587.0	577.6	± 1.2	kJ/mol	76.0960 ± 0.0048	3355-34-8*0
Toluene		19.77	12.02	± 0.31	kJ/mol	92.1384 ± 0.0056	108-88-3*500
Cycloprop-1-enylium		1502.2	1498.0	± 2.1	kJ/mol	39.0554 ± 0.0024	117067-78-4*0
Cyclopentadienylium		1088.28	1075.41	± 0.92	kJ/mol	65.0927 ± 0.0040	29661-18-5*0
Cycloheptene		-25.3	-46.4	± 1.7	kJ/mol	96.1702 ± 0.0057	628-92-2*500
Cycloheptatriene		154.07	145.29	± 0.96	kJ/mol	92.1384 ± 0.0056	544-25-2*500
Cycloprop-2-enylide		514.8	511.9	± 2.2	kJ/mol	39.0565 ± 0.0024	20829-57-6*0
Phenylethene			104.44	± 0.47	kJ/mol	104.1491 ± 0.0064	100-42-5*500
Hydrazoic acid cation		1333.63	1327.96	± 0.83	kJ/mol	43.02761 ± 0.00022	58852-14-5*0
Hydrazoic acid anion		309.0	302.7	± 2.3	kJ/mol	43.02871 ± 0.00022	203264-98-6*1
Benzonitrile		161.21	163.57	± 0.90	kJ/mol	103.1213 ± 0.0056	100-47-0*500
Isocyanobenzene		321.0	307.2	± 1.7	kJ/mol	103.1213 ± 0.0056	931-54-4*0
Phenol		-146.45	-162.30	± 0.65	kJ/mol	94.1112 ± 0.0048	108-95-2*500
Anisole			-119.48	± 0.77	kJ/mol	108.1378 ± 0.0056	100-66-3*500
Benzaldehyde		-86.16	-87.23	± 0.95	kJ/mol	106.1219 ± 0.0056	100-52-7*500
Acetophenone			-140.1	± 1.1	kJ/mol	120.1485 ± 0.0064	98-86-2*500
1-Phenylethenol		-9.5	-33.3	± 2.1	kJ/mol	120.1485 ± 0.0064	4383-15-7*0
p-Tolualdehyde			-126.5	± 1.3	kJ/mol	120.1485 ± 0.0064	104-87-0*500
Dihydrogen cation		1488.364	1488.480	± 0.000	kJ/mol	2.01533 ± 0.00014	12184-90-6*2
o-Tolualdehyde			-119.5	± 1.1	kJ/mol	120.1485 ± 0.0064	529-20-4*500
Isocyanogen chloride		314.7	316.3	± 2.4	kJ/mol	61.4701 ± 0.0012	75754-69-7*0
Fluorobenzene anion		-15.3	-27.1	± 1.6	kJ/mol	96.1029 ± 0.0048	34561-55-2*0
Ethynylene		827.214	833.919	± 0.087	kJ/mol	24.0214 ± 0.0016	12070-15-4*1
Hexafluorobenzene anion		-996.9	-999.3	± 2.4	kJ/mol	186.0552 ± 0.0048	37551-90-9*0
1,2-Propadien-1-ylium-1-yl-3-ylidene		1981.2	1989.1	± 2.2	kJ/mol	36.0316 ± 0.0024	118090-85-0*1
m-Chlorophenylium		1161.3	1151.1	± 2.6	kJ/mol	111.5481 ± 0.0049	127983-85-1*0
p-Chlorophenylium		1148.5	1139.1	± 2.5	kJ/mol	111.5481 ± 0.0049	42766-43-8*0
o-Chlorophenylium		1167.8	1158.6	± 2.5	kJ/mol	111.5481 ± 0.0049	137963-70-3*0
Iodobenzene cation		1023.42	1007.98	± 0.99	kJ/mol	204.0078 ± 0.0048	38406-85-8*0
Nitrobenzene			7.0	± 1.4	kJ/mol	123.1094 ± 0.0049	98-95-3*500
Pyridine		102.24	100.21	± 0.38	kJ/mol	79.0999 ± 0.0040	110-86-1*500
Isocyanogen bromide		341.0	335.3	± 3.5	kJ/mol	105.9214 ± 0.0013	65997-98-0*0
Nitromethane		-114.11	-112.93	± 0.41	kJ/mol	61.0401 ± 0.0010	75-52-5*500
Trioxidanyl		25.36	23.27	± 0.13	kJ/mol	49.00614 ± 0.00090	12500-78-6*0
2-Oxo-1-ethylium-1-yl		1289.4	1286.0	± 2.5	kJ/mol	42.0361 ± 0.0016	214464-96-7*11
2,2,4-Trimethylpentane		-224.2	-258.6	± 1.5	kJ/mol	114.2285 ± 0.0065	540-84-1*500
cis-1,2-Diiodoethene	$C(\I)=C\I$	217.45	209.17	± 0.35	kJ/mol	279.8462 ± 0.0016	590-26-1*0
trans-1,2-Diiodoethene	$C(\I)=C/I$	215.11	207.72	± 0.35	kJ/mol	279.8462 ± 0.0016	590-27-2*0
Oxoethylidene anion		86.9	83.6	± 2.1	kJ/mol	42.0372 ± 0.0016	106543-38-8*1
Norbornadiene			208.9	± 1.2	kJ/mol	92.1384 ± 0.0056	121-46-0*500
2,3-Butanedione			-365.55	± 0.53	kJ/mol	86.0892 ± 0.0033	431-03-8*500
Succinic acid		-801.5	-823.7	± 2.7	kJ/mol	118.0880 ± 0.0034	110-15-6*0
Carbon dioxide			-413.196	± 0.019	kJ/mol	44.00950 ± 0.00100	124-38-9*1000
1,2-Diiodoethane		87.85	73.18	± 0.90	kJ/mol	281.8621 ± 0.0016	624-73-7*0
1,2-Diiodoethane			9.32	± 0.60	kJ/mol	281.8621 ± 0.0016	624-73-7*500
2-Butanone		-267.77	-273.26	± 0.79	kJ/mol	72.1057 ± 0.0033	78-93-3*500
Acrolein cation		919.95	909.81	± 0.79	kJ/mol	56.0627 ± 0.0024	84005-05-0*1
Acrolein anion		-71.9	-82.0	± 3.1	kJ/mol	56.0638 ± 0.0024	23555-87-5*2
Acrolein			-95.64	± 0.96	kJ/mol	56.0633 ± 0.0024	107-02-8*500
Isocyanogen iodide		341.7	342.0	± 4.9	kJ/mol	152.92191 ± 0.00080	66004-32-8*0
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
Peroxyhypochlorous acid cation		1030.4	1024.6	± 2.5	kJ/mol	68.4589 ± 0.0011	67952-07-21
Bicyclo[1.1.0]buta-1,3-dien-4-ylium-2-yl		2087.6	2097.4	± 2.3	kJ/mol	48.0423 ± 0.0032	289679-91-0*0
Isocyanogen iodide anion		123.0	125.2	± 9.3	kJ/mol	152.92246 ± 0.00080	66004-32-80
3-Oxo-1-propenylium		1197.7	1192.0	± 3.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*121
Ethenedione anion		-149.7	-147.1	± 1.7	kJ/mol	56.0207 ± 0.0017	77783-15-4*0
Bicyclo[1.1.0]buta-1,3-dien-2-yl anion		803.0	810.7	± 1.8	kJ/mol	48.0433 ± 0.0032	289679-89-6*0
Urea		-317.73	-333.33	± 0.12	kJ/mol	60.05534 ± 0.00091	57-13-6*500
Oxadiazirine cation		1509.9	1507.2	± 2.4	kJ/mol	44.01233 ± 0.00033	227934-45-40
Formamide			-251.04	± 0.28	kJ/mol	45.04066 ± 0.00088	75-12-7*500
Acetamide			-315.89	± 0.53	kJ/mol	59.0672 ± 0.0017	60-35-5*500
Acrylonitrile		446.4	441.0	± 1.7	kJ/mol	53.0627 ± 0.0024	107-13-1*2
Acrylonitrile		146.33	154.00	± 0.77	kJ/mol	53.0627 ± 0.0024	107-13-1*500
Cyclopropenylidene anion		544.2	543.8	± 2.2	kJ/mol	38.0485 ± 0.0024	16165-40-50
Hydroxylamine			-97.1	± 2.2	kJ/mol	33.02996 ± 0.00037	7803-49-8*1000
Isocyanoethene		544.1	539.2	± 1.8	kJ/mol	53.0627 ± 0.0024	14668-82-7*2
NON cation		1444.0	1444.2	± 2.8	kJ/mol	44.01233 ± 0.00033	227934-46-50
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
1,3-Butadiynyl anion		677.1	686.2	± 1.1	kJ/mol	48.0433 ± 0.0032	59158-53-1*0
Hydroxymethyleneoxonium		792.90	782.77	± 0.63	kJ/mol	47.0328 ± 0.0010	77144-12-8*0
Dioxodiazoxane		125.7	120.4	± 2.1	kJ/mol	76.01168 ± 0.00091	122413-35-8*3
Ethyl hydroperoxide			-210.	± 20.	kJ/mol	62.0678 ± 0.0018	3031-74-1*500
Chloryl ion		1100.26	1097.60	± 0.53	kJ/mol	67.4510 ± 0.0011	25052-55-5*0
Methanol dimer		-398.5	-419.2	± 1.4	kJ/mol	64.0837 ± 0.0018	42845-44-3*0
Hydrogen iodide			-56.830	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*800
Trihydrogen		756.931	754.146	± 0.015	kJ/mol	3.02382 ± 0.00021	12184-91-7*2
Oxygen difluoride anion		-202.0	-201.9	± 2.7	kJ/mol	53.99675 ± 0.00030	7783-41-70
Tetraoxygen		104.4	102.4	± 3.5	kJ/mol	63.9976 ± 0.0012	12596-83-7*11
Hydrogen peroxide		-193.105	-187.287	± 0.077	kJ/mol	34.01468 ± 0.00062	7722-84-1*500
Vinylacetylene			266.3	± 2.1	kJ/mol	52.0746 ± 0.0032	689-97-4*500
Difluorodioxidanium		1283.7	1279.1	± 2.3	kJ/mol	69.99506 ± 0.00060	7783-44-01
2-Propen-3-ylium-1-ylidyne		1791.1	1792.7	± 2.6	kJ/mol	38.0474 ± 0.0024	161054-36-0*0
Vinylvinylidene		690.4	684.4	± 2.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*11
Propenediylidene anion		588.8	590.0	± 2.3	kJ/mol	38.0485 ± 0.0024	161054-36-00
1-Buten-3-ynylium		1483.0	1480.5	± 1.7	kJ/mol	51.0661 ± 0.0032	84654-85-3*2
2-Cyclopropyn-1-ylidenemethyliumyl		2239.9	2247.7	± 2.3	kJ/mol	48.0423 ± 0.0032	289679-92-1*0
2-Cyclopropen-1-ylidenemethylium		1433.1	1429.3	± 1.9	kJ/mol	51.0661 ± 0.0032	112936-36-4*1
1,3-Cyclobutadien-1-ylium		1472.9	1468.4	± 1.9	kJ/mol	51.0661 ± 0.0032	81913-77-1*1
1,3-Cyclobutadien-1-yl anion		616.3	611.7	± 2.1	kJ/mol	51.0672 ± 0.0032	154675-37-3*0
Cyclobutenylium		1038.6	1025.5	± 2.8	kJ/mol	53.0820 ± 0.0032	12316-90-4*0
Butyraldehyde		-235.86	-239.38	± 0.84	kJ/mol	72.1057 ± 0.0033	123-72-8*500
Triiodine		153.4	149.4	± 3.6	kJ/mol	380.713410 ± 0.000090	12596-31-5*0
Ammonium hydroxide			-366.24	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*850
Disilicon cation		1349.9	1353.5	± 2.7	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		-477.4	-478.2	± 2.6	kJ/mol	60.08485 ± 0.00067	53095-83-3*0
n-Heptane		-201.47	-223.92	± 0.45	kJ/mol	100.2019 ± 0.0057	142-82-5*500
Oxosilicate		-106.0	-104.8	± 2.6	kJ/mol	44.08545 ± 0.00042	12503-59-2*0
Silicon carbide		-72.1	-73.1	± 1.5	kJ/mol	40.09620 ± 0.00085	409-21-2*502
Silane cation		1104.7	1097.5	± 1.6	kJ/mol	32.11671 ± 0.00041	34826-51-2*0
Silylium		989.73	984.15	± 0.94	kJ/mol	31.10877 ± 0.00037	41753-67-7*0
Propane cation		974.7	954.6	± 1.7	kJ/mol	44.0951 ± 0.0025	34479-70-4*0
Silylidyne anion		248.5	249.7	± 1.1	kJ/mol	29.09399 ± 0.00031	68865-96-3*0
Disilanylium		981.7	970.4	± 2.6	kJ/mol	61.21015 ± 0.00069	86860-82-4*0
1-Disilanylium-1-yl		1124.0	1116.4	± 2.3	kJ/mol	60.20221 ± 0.00066	108492-64-4*0
Formic acid			-425.48	± 0.45	kJ/mol	46.0254 ± 0.0010	64-18-6*800
Ammonium hydroxide			-366.02	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*855
Di-mu-hydrodihydrodisilicon cation		1194.2	1184.5	± 3.5	kJ/mol	60.20221 ± 0.00066	129970-82-72
Di-mu-hydrodihydrodisilicon anion		296.4	288.9	± 3.5	kJ/mol	60.20331 ± 0.00066	129970-83-82
Paraformaldehyde			-179.2	± 1.6	kJ/mol	30.02598 ± 0.00087	30525-89-4*500
Chlorine chlorite		177.4	175.1	± 2.2	kJ/mol	102.9042 ± 0.0019	105206-44-8*2
Oxygen difluoride cation		1292.12	1289.59	± 0.66	kJ/mol	53.99566 ± 0.00030	39432-25-2*0
Tetrazete		764.9	759.0	± 1.8	kJ/mol	56.02696 ± 0.00028	42851-09-2*0
Ammonium hydroxide			-363.82	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*801
Hydrogen fluoride			-321.86	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*903
Cyclobutane			3.91	± 0.39	kJ/mol	56.1063 ± 0.0032	287-23-0*590
2,4-Hexadiyne		319.00	312.64	± 0.99	kJ/mol	78.1118 ± 0.0048	2809-69-0*500
Tetraazatetrahedrane		763.7	757.2	± 1.7	kJ/mol	56.02696 ± 0.00028	12596-63-3*0
Ammonium hydroxide			-364.66	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*803
Trimethylenecyclopropane		454.1	441.3	± 1.8	kJ/mol	78.1118 ± 0.0048	3227-90-5*0
3,4-Bis(methylene)cyclobutene		355.5	340.9	± 1.8	kJ/mol	78.1118 ± 0.0048	5291-90-7*0
Methylcyclopropane			1.94	± 0.59	kJ/mol	56.1063 ± 0.0032	594-11-6*590
1-Ethynylcyclobutene		402.2	387.9	± 1.8	kJ/mol	78.1118 ± 0.0048	813466-25-0*0
3-Methyl-1,2-pentadien-4-yne		414.6	403.4	± 2.3	kJ/mol	78.1118 ± 0.0048	813466-14-7*0
Ammonium hydroxide			-365.13	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*805
Peroxyhypochlorite		-252.78	-251.75	± 0.34	kJ/mol	67.4520 ± 0.0011	224299-14-3*0
1,3-Pentadiyne			384.9	± 5.0	kJ/mol	64.0853 ± 0.0040	4911-55-1*500
1-Aminoethylium		683.3	664.7	± 2.3	kJ/mol	44.0752 ± 0.0017	30208-36-70
Ammonium hydroxide			-365.43	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*807
1-Propanamine		-93.77	-101.38	± 0.40	kJ/mol	59.1103 ± 0.0025	107-10-8*500
2-Propanamine		-101.53	-112.14	± 0.52	kJ/mol	59.1103 ± 0.0025	75-31-0*500
Naphthalene		94.58	74.99	± 0.57	kJ/mol	128.1705 ± 0.0080	91-20-3*500
Hydroxyoxoammoniumyl		984.1	977.7	± 1.7	kJ/mol	47.01293 ± 0.00061	80371-48-8*1
Biphenyl		121.6	97.1	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*500
Biphenyl		121.6	97.1	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*520
Ammonium hydroxide			-366.00	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*815
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			-588.53	± 0.74	kJ/mol	88.0621 ± 0.0026	127-17-3*500
Hydrogen difluoride cation		1241.	1238.	± 16.	kJ/mol	39.004198 ± 0.000070	126950-54-7*1
Sulfur dioxide			-322.83	± 0.14	kJ/mol	64.0648 ± 0.0060	7446-09-5*1000
Nitrous acid anion		-105.82	-110.45	± 0.78	kJ/mol	47.01403 ± 0.00061	256393-36-9*2
Chlorodioxidanyl		100.36	99.27	± 0.34	kJ/mol	67.4515 ± 0.0011	17376-09-9*0
Sulfur trioxide			-440.84	± 0.30	kJ/mol	80.0642 ± 0.0061	7446-11-9*590
Sulfanylium		1148.41	1148.41	± 0.19	kJ/mol	33.0734 ± 0.0060	12273-42-6*0
1,2-Butadienylium		1315.5	1307.4	± 1.7	kJ/mol	53.0820 ± 0.0032	65114-67-21
Ammonium hydroxide			-365.85	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*861
Sulfuric acid			-887.03	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*824
Sulfur hydroxide oxide cation		659.0	648.2	± 3.5	kJ/mol	97.0710 ± 0.0061	12337-07-42
1,3-Butadienylium		1255.8	1246.5	± 2.3	kJ/mol	53.0820 ± 0.0032	86181-69-3*1
Sulfurous acid		-511.18	-520.69	± 0.89	kJ/mol	82.0801 ± 0.0061	7782-99-2*0
Sulfurous acid			-608.63	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*1000
Peroxyhypochlorous acid anion		-32.2	-33.9	± 2.6	kJ/mol	68.4600 ± 0.0011	67952-08-32
Sulfur dioxide - hydroxyl complex		-265.9	-268.0	± 2.2	kJ/mol	81.0721 ± 0.0061	32750-86-0100
Platinum dimer		823.5	822.5	± 3.8	kJ/mol	390.1560 ± 0.0040	12596-95-1*0
Platinum hydride		457.1	456.2	± 9.2	kJ/mol	196.0859 ± 0.0020	13966-55-7*0
Hydrogen atom		-37.0	-38.7	± 1.1	kJ/mol	1.007940 ± 0.000070	12385-13-6*1000000
Hydrogen atom		-33.4	-35.1	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1000004
Ammonium hydroxide			-366.36	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*828
Dihydrogen		-0.000	-0.058	± 0.000	kJ/mol	2.01588 ± 0.00014	1333-74-0*2
Hydrogen fluoride			-320.70	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*805
Cyanoamidogen		657.3	654.5	± 2.0	kJ/mol	41.03212 ± 0.00082	12347-01-2*22
Hydrazoic acid			272.58	± 0.48	kJ/mol	43.02816 ± 0.00022	7782-79-8*800
Trihydrogen		745.878	743.094	± 0.062	kJ/mol	3.02382 ± 0.00021	12184-91-7*1
Chlorine atom hexacation		28501.	28503.	± 11.	kJ/mol	35.44941 ± 0.00090	22541-73-7*0
Diazomethylium		1458.8	1456.8	± 2.2	kJ/mol	41.03157 ± 0.00082	271249-81-1*2
1-Methylethenylium		995.1	986.0	± 1.9	kJ/mol	41.0713 ± 0.0024	50457-57-3*0
Diazirinylium		1384.7	1381.1	± 2.1	kJ/mol	41.03157 ± 0.00082	77116-26-8*2
1-Methylethenyl anion		199.3	188.2	± 2.0	kJ/mol	41.0723 ± 0.0024	65887-19-6*0
Iminomethylimidogen cation		1677.5	1676.3	± 2.3	kJ/mol	41.03157 ± 0.00082	150296-30-31
Ammonia			-78.87	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*805
Iminomethylimidogen anion		405.2	401.9	± 2.5	kJ/mol	41.03267 ± 0.00082	150296-30-3*1
Hypochloroperoxoous acid, hydroxy ester		48.7	41.8	± 2.5	kJ/mol	84.4588 ± 0.0013	928652-99-7*2
Water trimer		-762.64	-776.74	± 0.20	kJ/mol	54.04584 ± 0.00099	31014-12-7*0
Acetylene anion		356.9	356.7	± 1.9	kJ/mol	26.0378 ± 0.0016	50443-89-5*0
Trihydrogen		215.9	218.3	± 1.1	kJ/mol	3.02382 ± 0.00021	12184-91-7*100
Fluorosyl fluoride		227.	225.	± 21.	kJ/mol	53.99621 ± 0.00030	86825-57-2*2
Carbide		2709.5	2714.7	± 2.7	kJ/mol	12.01289 ± 0.00080	12385-15-8*0
(Iminomethyl)imidogen		420.1	413.3	± 3.0	kJ/mol	42.04006 ± 0.00082	87570-07-8*1
1-Propenylium		1233.7	1223.3	± 2.0	kJ/mol	41.0713 ± 0.0024	50457-58-4*1
Fluorine atom heptacation		63649.3	63651.1	± 1.8	kJ/mol	18.99456314 ± 0.00000050	14700-77-7*0
Oxygen atom trication		10249.929	10252.880	± 0.018	kJ/mol	15.99775 ± 0.00030	14127-64-1*0
Ammonia			-79.33	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*807
1-Propenylide		210.4	199.3	± 2.0	kJ/mol	41.0723 ± 0.0024	65887-20-9*1
Fluorine atom octacation		155686.5	155688.3	± 1.8	kJ/mol	18.99401456 ± 0.00000050	15721-58-1*0
Hydrogen peroxide cation		897.29	890.30	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*11
Hydrogen peroxide		-129.417	-135.403	± 0.058	kJ/mol	34.01468 ± 0.00062	7722-84-1*2
Chlorine atom		119.621	121.228	± 0.0011	kJ/mol	35.45270 ± 0.00090	22537-15-1*1
Nitrogen atom anion		488.2	490.5	± 2.3	kJ/mol	14.007289 ± 0.000070	17778-87-9*0
Ammonia			-77.031	± 0.056	kJ/mol	17.03056 ± 0.00022	7664-41-7*800
Trihydrogen cation		1110.304	1106.697	± 0.013	kJ/mol	3.02327 ± 0.00021	28132-48-1*2
Nitrogen atom dication		4728.992	4731.820	± 0.024	kJ/mol	14.005643 ± 0.000070	17439-59-7*0
Nitrogen atom trication		9306.68	9308.54	± 0.23	kJ/mol	14.005094 ± 0.000070	18396-22-0*0
Tetrabromomethane			58.7	± 1.2	kJ/mol	331.6267 ± 0.0041	558-13-4*500
Difluorine cation		1514.301	1514.475	± 0.013	kJ/mol	37.9962578 ± 0.0000010	12184-86-0*0
Tetraiodomethane			392.5	± 8.0	kJ/mol	519.62858 ± 0.00081	507-25-5*500
Bromomethane		-56.61	-59.63	± 0.17	kJ/mol	94.9385 ± 0.0013	74-83-9*590
Fluorine atom		77.253	79.038	± 0.017	kJ/mol	18.99840320 ± 0.00000050	14762-94-8*1
Peroxyhypochlorous acid anion		-2.8	-3.3	± 2.6	kJ/mol	68.4600 ± 0.0011	67952-08-31
Cyclopentadiene			110.06	± 0.58	kJ/mol	66.1011 ± 0.0040	542-92-7*590
Chlorodioxidenium		1215.1	1212.9	± 6.3	kJ/mol	67.4510 ± 0.0011	64710-10-7*0
Nitrogen atom tetracation		16781.74	16783.60	± 0.23	kJ/mol	14.004546 ± 0.000070	14452-70-1*0
Ketene		-45.36	-48.42	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*21
Nitrogen atom pentacation		26226.70	26228.56	± 0.23	kJ/mol	14.003997 ± 0.000070	20508-99-0*0
Fluorine atom pentacation		30617.6	30619.4	± 1.8	kJ/mol	18.99566030 ± 0.00000050	14701-05-4*0
2-Chloro ozone		265.7	265.1	± 3.7	kJ/mol	83.4509 ± 0.0013	141801-66-30
Ethynylaminylium		1350.6	1348.8	± 2.5	kJ/mol	40.0435 ± 0.0016	103835-08-1*2
Ammonium oxide		-428.46	-430.45	± 0.61	kJ/mol	52.07640 ± 0.00065	12161-77-2*500
Bromodioxy		116.7	107.7	± 3.7	kJ/mol	111.9028 ± 0.0012	67177-47-3*0
Oxonium		605.88	599.13	± 0.17	kJ/mol	19.02267 ± 0.00037	13968-08-6*2
Nitrogen atom hexacation		79493.09	79494.96	± 0.23	kJ/mol	14.003449 ± 0.000070	15721-56-9*0
Ethyl bromide		-55.69	-91.22	± 0.26	kJ/mol	108.9651 ± 0.0019	74-96-4*500
Vinyl iodide		139.6	130.8	± 1.2	kJ/mol	153.9497 ± 0.0016	593-66-8*0
Deuterium molecule cation		1492.286	1492.361	± 0.000	kJ/mol	4.02765497609 ± 0.00000000080	12184-84-8*0
Trioxirane cation		1444.5	1442.4	± 2.2	kJ/mol	47.99765 ± 0.00090	153851-84-40
Difluorovinylidene cation		1181.6	1183.1	± 2.3	kJ/mol	62.0177 ± 0.0016	268566-71-8*0
Dioxofluorine anion		155.9	154.4	± 2.5	kJ/mol	50.99775 ± 0.00060	175861-93-50
Carbon monoxide		-113.800	-110.520	± 0.026	kJ/mol	28.01010 ± 0.00085	630-08-0*2
Chlorine atom pentacation		19147.	19149.	± 11.	kJ/mol	35.44996 ± 0.00090	20337-89-7*0
Chloro(chlorooxy)methylene		101.1	104.7	± 4.8	kJ/mol	98.9155 ± 0.0020	479587-31-0*12
Ammonia			-79.63	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*809
Ammonia			-80.16	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*815
Methyl acetate		-394.19	-413.05	± 0.57	kJ/mol	74.0785 ± 0.0025	79-20-9*0
Ammonia			-75.73	± 0.57	kJ/mol	17.03056 ± 0.00022	7664-41-7*801
Ammonia			-80.57	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*839
Carbon suboxide		-131.3	-116.2	± 1.1	kJ/mol	68.0309 ± 0.0025	504-64-3*500
Methyl formate		-346.97	-360.01	± 0.65	kJ/mol	60.0520 ± 0.0017	107-31-3*0
m-Benzyne		614.6	605.2	± 1.4	kJ/mol	76.0960 ± 0.0048	1828-89-3*1
Ethyl formate		-375.2	-393.9	± 1.0	kJ/mol	74.0785 ± 0.0025	109-94-4*0
Iodine monochloride			-24.048	± 0.063	kJ/mol	162.35717 ± 0.00090	7790-99-0*590
Oxoniumyl ion		978.497	975.593	± 0.024	kJ/mol	18.01473 ± 0.00033	56583-62-1*1
Tetraoxodinitrate anion		-184.6	-187.8	± 2.4	kJ/mol	92.0116 ± 0.0012	63552-02-3*0
Water		-238.902	-241.805	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*2
2-Hydroxyethylium		1024.6	1012.0	± 2.0	kJ/mol	45.0600 ± 0.0017	38607-31-7*1
mu-Oxodichlorine cation		1130.45	1126.84	± 0.63	kJ/mol	86.9043 ± 0.0018	51174-96-0*0
Nitride		1879.1	1881.0	± 4.4	kJ/mol	14.008386 ± 0.000070	18851-77-9*0
Hydrogen fluoride			-321.39	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*1000
Chlorine atom dication		3668.475	3670.081	± 0.013	kJ/mol	35.45160 ± 0.00090	15723-23-6*0
Tropylide		261.5	245.2	± 2.0	kJ/mol	91.1310 ± 0.0056	34464-18-1*0
Ammonia			-80.50	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*844
Ammonia			-80.44	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*850
mu-Oxodichlorate anion		-147.8	-147.7	± 2.5	kJ/mol	86.9053 ± 0.0018	365546-30-1*0
2-Methylpentane		-180.17	-203.83	± 0.73	kJ/mol	86.1754 ± 0.0049	107-83-5*500
Ethynylene		819.991	826.564	± 0.087	kJ/mol	24.0214 ± 0.0016	12070-15-4*2
Dioxaziridine		277.5	270.8	± 1.9	kJ/mol	47.01348 ± 0.00061	67394-35-8*0
Acetoxy		-182.16	-190.87	± 0.80	kJ/mol	59.0440 ± 0.0017	13799-69-4*0
Fluorine atom hexacation		45781.5	45783.3	± 1.8	kJ/mol	18.99511172 ± 0.00000050	14701-04-3*0
Ammonia			-80.22	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*855
1,2-Propadien-1-ylium-1-yl-3-ylidene		1944.5	1952.5	± 1.9	kJ/mol	36.0316 ± 0.0024	118090-85-0*0
Peroxyformate		-320.7	-326.5	± 1.7	kJ/mol	61.0174 ± 0.0012	104960-05-6*2
Tribromide			-129.51	± 0.23	kJ/mol	239.7125 ± 0.0030	14522-80-6*800
Oxygen atom pentacation		28708.788	28710.645	± 0.053	kJ/mol	15.99666 ± 0.00030	14127-66-3*0
Ammonia			-80.05	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*861
Carbon trication		8770.934	8776.080	± 0.047	kJ/mol	12.00905 ± 0.00080	14067-06-2*0
2-Propen-1-ylium-1-ylidene		1373.2	1369.6	± 2.0	kJ/mol	39.0554 ± 0.0024	88000-25-3*0
Hydrazoic acid anion		316.2	310.0	± 2.3	kJ/mol	43.02871 ± 0.00022	203264-98-6*2
3-Methylpentane		-177.63	-201.90	± 0.76	kJ/mol	86.1754 ± 0.0049	96-14-0*500
Hydrogen bromide			-120.58	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*952
Peroxyformyl		-90.4	-95.9	± 1.7	kJ/mol	61.0168 ± 0.0012	56240-83-6*2
Hydrogen peroxide cation		931.03	924.18	± 0.98	kJ/mol	34.01413 ± 0.00062	12325-10-9*22
2,3-Dimethylbutane		-182.43	-206.93	± 0.81	kJ/mol	86.1754 ± 0.0049	79-29-8*500
Ammonia			-80.38	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*818
Nitrosyl nitrite anion		-100.2	-103.4	± 2.9	kJ/mol	76.01223 ± 0.00091	122413-35-82
Propionic acid		-435.94	-453.83	± 0.59	kJ/mol	74.0785 ± 0.0025	79-09-4*0
2-Oxo-1-ethylium-1-yl		1292.0	1288.7	± 2.4	kJ/mol	42.0361 ± 0.0016	214464-96-7*12
Isocyanogen bromide anion		104.8	101.7	± 4.6	kJ/mol	105.9220 ± 0.0013	238754-53-50
Carbon pentacation		52824.596	52829.742	± 0.051	kJ/mol	12.00796 ± 0.00080	14280-11-6*0
Succinic acid		-918.48	-940.21	± 0.12	kJ/mol	118.0880 ± 0.0034	110-15-6*500
Oxoethylidene anion		92.3	89.0	± 2.3	kJ/mol	42.0372 ± 0.0016	106543-38-8*2
1,2-Dibromoethane			-80.2	± 1.2	kJ/mol	187.8612 ± 0.0026	106-93-4*500
Ammonium hydroxide			-366.682	± 0.060	kJ/mol	35.04584 ± 0.00047	1336-21-6*1000
1,3-Butadien-2-ol		-42.7	-59.2	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*21
1,3-Butadien-2-ol		-53.4	-68.7	± 1.5	kJ/mol	70.0898 ± 0.0032	59120-04-6*1
Fluorine atom dication		5132.471	5134.256	± 0.021	kJ/mol	18.99730604 ± 0.00000050	14701-07-6*0
Acrolein		-55.19	-65.28	± 0.64	kJ/mol	56.0633 ± 0.0024	107-02-8*0
Nitrosyl nitrate		60.4	52.5	± 1.9	kJ/mol	92.0111 ± 0.0012	15969-55-8*2
1-Oxo-2-propenide		83.7	78.7	± 2.5	kJ/mol	55.0559 ± 0.0024	78944-75-9*2
Propadien-1-olate		1.4	-4.4	± 2.5	kJ/mol	55.0559 ± 0.0024	109686-13-7*0
1-Formylethenylium		1158.7	1154.2	± 3.0	kJ/mol	55.0548 ± 0.0024	101705-89-9*1
3-Oxo-1-propenyl		190.92	184.95	± 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
2-Formylethen-1-ide		30.5	23.7	± 3.1	kJ/mol	55.0559 ± 0.0024	135924-69-5*21
1,2-Propadien-1-one cation		1012.7	1011.2	± 1.8	kJ/mol	54.0468 ± 0.0024	87612-93-9*0
2-Propynal cation		1168.2	1167.1	± 1.2	kJ/mol	54.0468 ± 0.0024	100815-70-1*0
Hydroxylamine		-33.08	-43.45	± 0.42	kJ/mol	33.02996 ± 0.00037	7803-49-8*0
Formylethynyl cation		1539.9	1541.8	± 2.7	kJ/mol	53.0389 ± 0.0024	85905-64-22
Formylethynyl cation		1540.6	1542.7	± 2.8	kJ/mol	53.0389 ± 0.0024	85905-64-21
1-Propen-1-yl-3-ylidene		656.7	653.3	± 1.1	kJ/mol	39.0559 ± 0.0024	84654-90-0*1
Bicyclo[1.1.0]buta-1,3-diene-2,4-diyl		1047.12	1054.71	± 0.67	kJ/mol	48.0428 ± 0.0032	12184-80-4*2
(Hydroxyimino)methyl		258.8	252.7	± 2.0	kJ/mol	44.03272 ± 0.00087	206442-92-4*2
Cyanoacetylene cation		1495.52	1497.82	± 0.59	kJ/mol	51.0462 ± 0.0024	85398-68-1*0
Isocyanoacetylene cation		1567.8	1570.3	± 1.3	kJ/mol	51.0462 ± 0.0024	145076-03-5*0
Hydroxylamine			-107.47	± 0.60	kJ/mol	33.02996 ± 0.00037	7803-49-8*500
Cyanoethynylium		1867.6	1874.3	± 3.2	kJ/mol	50.0383 ± 0.0024	104233-69-4*0
1,3-Butadiyn-4-ylium-1-yl		2109.7	2120.4	± 2.8	kJ/mol	48.0423 ± 0.0032	124708-46-9*0
2,2-Dimethylbutane		-187.94	-213.65	± 0.75	kJ/mol	86.1754 ± 0.0049	75-83-2*500
Chlorine trifluoride cation		1053.4	1049.2	± 2.3	kJ/mol	92.44736 ± 0.00090	478167-77-0*0
2-Iminoethyl		221.7	210.3	± 1.8	kJ/mol	42.0599 ± 0.0016	73843-90-0*1
2-Iminoethyl anion		110.7	100.1	± 2.3	kJ/mol	42.0604 ± 0.0016	73843-87-5*2
Dihydrogen anion		253.8	254.7	± 1.2	kJ/mol	2.01643 ± 0.00014	12184-89-3*0
3-Imino-2-propen-1-ylidene		530.7	526.3	± 1.2	kJ/mol	53.0627 ± 0.0024	916765-05-4*1
Chlorine atom trication		7487.2	7490.2	± 3.3	kJ/mol	35.45105 ± 0.00090	16547-50-5*0
2-Iminoethylium		1108.3	1097.6	± 3.0	kJ/mol	42.0594 ± 0.0016	73843-91-1*2
2-(Methylidyneamino)ethenyl		600.7	596.4	± 1.2	kJ/mol	53.0627 ± 0.0024	123416-74-0*1
1,3-Butadiyne-1,4-diyl		1052.10	1062.07	± 0.63	kJ/mol	48.0428 ± 0.0032	78015-07-3*1
Carbonic acid			-698.995	± 0.028	kJ/mol	62.0248 ± 0.0012	463-79-6*1000
Tribromine cation		1036.2	1013.5	± 2.5	kJ/mol	239.7115 ± 0.0030	33105-86-1*0
Oxygen atom octacation		197447.75	197449.60	± 0.12	kJ/mol	15.99501 ± 0.00030	21450-98-6*0
Hydrazoic acid			257.60	± 0.48	kJ/mol	43.02816 ± 0.00022	7782-79-8*1000
(E)-2-Iminoethylium		1108.3	1094.8	± 3.0	kJ/mol	42.0594 ± 0.0016	91127-33-2*0
(Z)-2-Iminoethylium		1151.8	1143.0	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-34-3*0
Tetraoxygen		69.8	65.1	± 4.4	kJ/mol	63.9976 ± 0.0012	12596-83-7*21
(Z)-2-Iminoethylium		1151.8	1143.0	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-34-3*11
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
Hydrogen iodide			-56.648	± 0.089	kJ/mol	127.912410 ± 0.000076	10034-85-2*958
1-Hydroxyethyl		-42.87	-56.30	± 0.46	kJ/mol	45.0605 ± 0.0017	2348-46-1*0
Ammonia			-80.52	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*822
1,2-Butadien-1-ylium-1-yl		1466.9	1461.7	± 3.1	kJ/mol	52.0740 ± 0.0032	161054-21-3*0
Bicyclo[1.1.0]butan-3-id-1-yl		524.6	515.9	± 2.6	kJ/mol	52.0751 ± 0.0032	131273-95-5*0
1,2-Cyclobutadiene		586.0	579.3	± 2.2	kJ/mol	52.0746 ± 0.0032	50682-90-1*0
Chlorine atom tetracation		12615.5	12617.1	± 4.6	kJ/mol	35.45051 ± 0.00090	22541-74-8*0
1-Hydroperoxyethylium		690.4	675.6	± 1.5	kJ/mol	61.0594 ± 0.0017	126898-98-42
But-3-en-1-yn-1-ide		559.0	558.3	± 2.2	kJ/mol	51.0672 ± 0.0032	58870-47-6*1
2-Hydroperoxyethyl		65.0	51.2	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*11
Propylene cation		975.15	961.62	± 0.18	kJ/mol	42.0792 ± 0.0024	34504-10-4*0
Formaldehyde		-105.392	-109.232	± 0.095	kJ/mol	30.02598 ± 0.00087	50-00-0*21
Ammonia			-80.56	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*828
Deuteride		146.991	148.904	± 0.0021	kJ/mol	2.01465035791 ± 0.00000000040	14452-69-8*0
Silicon cation		1236.90	1241.03	± 0.59	kJ/mol	28.08495 ± 0.00030	14067-07-3*0
Silicon atom dication		2814.03	2817.02	± 0.59	kJ/mol	28.08440 ± 0.00030	14175-55-4*0
Silicon atom trication		6045.62	6048.60	± 0.59	kJ/mol	28.08385 ± 0.00030	14175-56-5*0
sec-Butylium		792.6	769.0	± 1.6	kJ/mol	57.1137 ± 0.0033	16548-59-7*0
Dioxosilane		-901.5	-906.3	± 1.4	kJ/mol	60.08430 ± 0.00067	7631-86-9*515
Oxosilyliumyl		1022.0	1023.2	± 2.9	kJ/mol	44.08435 ± 0.00042	12359-18-1*0
Oxygen atom dication		4949.458	4953.000	± 0.013	kJ/mol	15.99830 ± 0.00030	14127-63-0*0
Oxygen atom heptacation		113369.48	113371.34	± 0.12	kJ/mol	15.99556 ± 0.00030	14274-89-6*0
Dioxofluorine cation		1667.0	1664.8	± 2.8	kJ/mol	50.99665 ± 0.00060	223566-05-0*0
Dinitrogen dimer		-0.88	0.84	± 0.67	kJ/mol	56.02696 ± 0.00028	154680-01-0*0
Polyoxymethylene			-170.85	± 0.21	kJ/mol	30.02598 ± 0.00087	9002-81-7*500
mu-Hydrotetrahydrodisilicon cation		981.8	969.0	± 2.8	kJ/mol	61.21015 ± 0.00069	160896-65-1*0
Di-mu-hydrotrihydrodisilicon cation		1033.9	1020.5	± 2.8	kJ/mol	61.21015 ± 0.00069	160896-65-10
Disilene anion		178.4	170.0	± 3.1	kJ/mol	60.20331 ± 0.00066	157379-08-3*0
Trioxygen difluoride		112.5	107.3	± 1.1	kJ/mol	85.99501 ± 0.00090	16829-28-0*0
Silylsilylene anion		160.0	151.4	± 3.1	kJ/mol	60.20331 ± 0.00066	286949-98-2*0
Silylsilylene		381.2	372.4	± 2.7	kJ/mol	60.20276 ± 0.00066	50420-90-1*1
mu-Hydrotrihydrodisilicon		317.7	307.6	± 2.2	kJ/mol	60.20276 ± 0.00066	497967-56-3*0
Formic acid			-425.38	± 0.45	kJ/mol	46.0254 ± 0.0010	64-18-6*1000
Hydrazine monohydrate			-242.58	± 0.19	kJ/mol	50.06052 ± 0.00053	7803-57-8*500
2-Aminoethenylium		1117.9	1106.8	± 2.4	kJ/mol	42.0594 ± 0.0016	64724-21-6*11
mu-Hydrotrihydrodisilicon cation		1160.0	1152.0	± 2.6	kJ/mol	60.20221 ± 0.00066	497967-55-20
Formaldehyde			-171.20	± 0.59	kJ/mol	30.02598 ± 0.00087	50-00-0*800
Methylene		391.050	391.596	± 0.095	kJ/mol	14.02658 ± 0.00081	2465-56-7*0
2-Aminoethenyl anion		241.9	231.3	± 2.6	kJ/mol	42.0604 ± 0.0016	64724-21-61
Silyloxoniumylidene		1096.3	1090.0	± 2.9	kJ/mol	47.10817 ± 0.00047	152720-17-7*1
Hydroxysilylium		600.2	591.6	± 2.9	kJ/mol	47.10817 ± 0.00047	66639-72-3*0
Water		-286.272	-292.712	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*510
Acetylene		599.2	599.0	± 1.5	kJ/mol	26.0373 ± 0.0016	74-86-2*11
1,5-Hexadiyne			385.9	± 1.9	kJ/mol	78.1118 ± 0.0048	628-16-0*500
Bicyclo[3.1.0]hexa-1,3-diene		406.4	390.8	± 2.2	kJ/mol	78.1118 ± 0.0048	28425-23-2*0
3-Ethenylidenecyclobutene		406.5	392.4	± 2.3	kJ/mol	78.1118 ± 0.0048	813466-23-8*0
Methylaminyliumyl		1388.2	1381.9	± 2.2	kJ/mol	29.04071 ± 0.00083	56924-51-7*1
3,4-Hexadien-1-yne		418.6	407.4	± 2.6	kJ/mol	78.1118 ± 0.0048	194024-51-6*0
3-Ethynylcyclobutene		421.7	407.3	± 2.4	kJ/mol	78.1118 ± 0.0048	175090-90-1*0
Oxygen atom tetracation		17719.207	17721.064	± 0.025	kJ/mol	15.99721 ± 0.00030	14127-65-2*0
Difluorodioxidanium		1287.2	1283.0	± 2.3	kJ/mol	69.99506 ± 0.00060	7783-44-02
2-Aminoethylium		1042.6	1026.1	± 2.4	kJ/mol	44.0752 ± 0.0017	54088-54-9*1
2-Aminoethyl anion		149.0	131.8	± 2.1	kJ/mol	44.0763 ± 0.0017	71857-14-2*0
Formylimidogen		245.3	242.1	± 3.3	kJ/mol	43.02478 ± 0.00086	42288-92-6*2
1,2-Diphenylethane		180.74	142.26	± 0.76	kJ/mol	182.2610 ± 0.0112	103-29-7*0
2-Naphthalenylium		1195.4	1177.6	± 3.5	kJ/mol	127.1620 ± 0.0080	79319-69-0*0
1-Naphthalenylium		1192.5	1174.5	± 3.4	kJ/mol	127.1620 ± 0.0080	79319-68-9*0
Hydroxymethylene		112.68	108.92	± 0.27	kJ/mol	30.02598 ± 0.00087	19710-56-6*0
Peroxyhypochlorous acid cation		1050.8	1045.2	± 2.5	kJ/mol	68.4589 ± 0.0011	67952-07-22
Biphenyl			113.7	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*590
Buckminsterfullerene		2523.7	2519.1	± 6.4	kJ/mol	720.6420 ± 0.0480	99685-96-8*0
Buckminsterfullerene		2328.6	2338.1	± 6.4	kJ/mol	720.6420 ± 0.0480	99685-96-8*500
Cyclobutatrienyl		961.9	965.4	± 2.4	kJ/mol	49.0507 ± 0.0032	99417-52-40
Hydroxyoxoammoniumyl		1014.8	1008.5	± 2.0	kJ/mol	47.01293 ± 0.00061	80371-48-8*2
Carbon hexacation		100101.750	100106.897	± 0.051	kJ/mol	12.00741 ± 0.00080	16249-02-8*0
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
Helium dihydride		-0.05	0.87	± 0.42	kJ/mol	6.01848 ± 0.00014	33309-42-1*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
Ammonia			-80.58	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*833
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		21529.81	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
Nitrous acid anion		-105.4	-109.4	± 1.8	kJ/mol	47.01403 ± 0.00061	256393-36-9*1
Sulfur atom dication		3528.24	3531.93	± 0.14	kJ/mol	32.0649 ± 0.0060	14127-58-3*0
Sulfur atom trication		6890.9	6892.9	± 3.2	kJ/mol	32.0644 ± 0.0060	22541-72-6*0
Sulfur atom tetracation		11447.1	11448.9	± 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
Acetaldehyde		-187.03	-191.75	± 0.29	kJ/mol	44.0526 ± 0.0017	75-07-0*500
Isocyanogen cation		1654.1	1656.5	± 1.4	kJ/mol	52.0343 ± 0.0016	133415-63-1*0
Dioxathiirane		166.2	163.8	± 2.2	kJ/mol	64.0648 ± 0.0060	191663-73-7*0
Trioxodinitrate anion		-87.3	-93.0	± 2.2	kJ/mol	76.01223 ± 0.00091	194856-62-7*1
Sulfur trioxide			-454.29	± 0.37	kJ/mol	80.0642 ± 0.0061	7446-11-9*500
3-Oxidedioxathiirane		-127.8	-132.8	± 2.2	kJ/mol	80.0642 ± 0.0061	2243010-16-2*0
Trioxathietane		263.7	258.6	± 2.3	kJ/mol	80.0642 ± 0.0061	2243010-16-20
Oxadithiirane		136.5	134.4	± 2.5	kJ/mol	80.1314 ± 0.0120	488092-02-0*0
Sulfanylideneoxidaniumthiolate		220.9	219.1	± 2.0	kJ/mol	80.1314 ± 0.0120	401811-43-6*0
Diisocyanogen cation		1838.6	1842.6	± 3.1	kJ/mol	52.0343 ± 0.0016	78800-21-22
Sulfuric acid			-887.63	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*893
Sulfuric acid		-878.85	-909.09	± 0.14	kJ/mol	98.0795 ± 0.0061	7664-93-9*800
Fluorine atom trication		11182.871	11186.696	± 0.032	kJ/mol	18.99675746 ± 0.00000050	14700-88-0*0
Sulfuric acid			-886.28	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*821
Sulfuric acid			-891.18	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*835
Sulfuric acid			-891.55	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*837
Sulfuric acid			-893.35	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*840
Sulfuric acid			-894.30	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*841
Sulfuric acid			-895.76	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*842
Sulfuric acid			-897.79	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*844
Sulfuric acid			-886.45	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*906
Sulfuric acid			-886.84	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*823
Sulfuric acid			-887.19	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*826
Sulfuric acid			-887.33	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*827
Sulfuric acid			-891.37	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*836
Sulfuric acid			-892.80	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*954
Sulfuric acid			-898.52	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*845
Sulfuric acid			-899.44	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*847
Sulfuric acid			-899.70	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*848
Sulfuric acid			-900.16	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*849
Sulfuric acid monohydrate		-1126.26	-1127.41	± 0.14	kJ/mol	116.0948 ± 0.0062	10193-30-3*500
Sulfuric acid dihydrate		-1422.07	-1426.86	± 0.15	kJ/mol	134.1100 ± 0.0063	13451-10-0*500
Sulfuric acid trihydrate		-1716.02	-1720.13	± 0.16	kJ/mol	152.1253 ± 0.0064	40835-65-2*500
Sulfuric acid tetrahydrate		-2006.87	-2010.90	± 0.17	kJ/mol	170.1406 ± 0.0065	37006-20-5*500
Fluorine atom tetracation		19594.3	19596.6	± 1.7	kJ/mol	18.99620888 ± 0.00000050	14700-79-9*0
Sulfurous acid			-635.3	± 4.0	kJ/mol	82.0801 ± 0.0061	7782-99-2*800
Ammonia			-78.02	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*803
Cyclopropane cation		1021.7	1006.3	± 1.5	kJ/mol	42.0792 ± 0.0024	34496-93-0*0
Hydrogen fluoride			-326.67	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*852
Dioxymethylene		341.8	339.8	± 3.0	kJ/mol	45.0174 ± 0.0010	438586-67-5*0
Chloroformyl anion		-356.5	-352.9	± 3.2	kJ/mol	63.4633 ± 0.0012	41976-93-6*0
Diazene anion		265.5	258.7	± 2.0	kJ/mol	30.02991 ± 0.00020	100429-75-2*0
1H-diazirin-3-ide		379.7	376.6	± 2.0	kJ/mol	41.03267 ± 0.00082	735234-64-70
Nitrogen atom heptacation		143853.26	143855.12	± 0.23	kJ/mol	14.002900 ± 0.000070	40549-08-4*0
Diazene anion		265.5	258.7	± 2.0	kJ/mol	30.02991 ± 0.00020	100429-75-2*1
Hydrogen bromide			-120.33	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*895
2-Hydroxyethyl		-13.07	-26.33	± 0.49	kJ/mol	45.0605 ± 0.0017	4422-54-2*0
Hydrogen fluoride			-322.36	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*833
Acetic acid			-484.79	± 0.27	kJ/mol	60.0520 ± 0.0017	64-19-7*1000
2-Iodoethanol		-131.9	-150.1	± 2.5	kJ/mol	171.9650 ± 0.0017	624-76-0*0
Hydrogen bromide			-120.40	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*837
Hydrogen iodide			-56.604	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*842
Trichlorine cation		1056.6	1055.5	± 1.4	kJ/mol	106.3576 ± 0.0027	33088-85-6*0
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*836
Acetic acid			-483.02	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*923
Acetic acid			-482.92	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*801
Trihydrogen		477.4	474.7	± 2.3	kJ/mol	3.02382 ± 0.00021	12184-91-7*201
Carbon		2.390	1.862	± 0.044	kJ/mol	12.01070 ± 0.00080	7440-44-0*501
Ammonium hydroxide			-366.13	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*817
1-Methoxyethenol		-284.4	-302.8	± 1.2	kJ/mol	74.0785 ± 0.0025	4453-91-2*0
Ethylidene		361.26	354.28	± 0.48	kJ/mol	28.0532 ± 0.0016	4218-50-2*0
Hydrogen fluoride			-324.14	± 0.14	kJ/mol	20.006343 ± 0.000070	7664-39-3*843
Hydrogen iodide			-55.700	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*821
Hydrodioxonitrogen cation		1130.1	1123.4	± 3.0	kJ/mol	47.01293 ± 0.00061	252986-76-8*0
Hypobromous acid cation		975.16	964.54	± 0.54	kJ/mol	96.9108 ± 0.0010	154804-02-1*0
Nitric acid			-205.72	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*817
Isocyanic fluoride cation		1618.1	1618.7	± 4.0	kJ/mol	45.01529 ± 0.00080	16992-26-00
Methylaminyliumyl		1388.2	1381.9	± 2.2	kJ/mol	29.04071 ± 0.00083	56924-51-7*0
Isocyanic fluoride anion		74.1	75.7	± 5.7	kJ/mol	45.01639 ± 0.00080	357426-78-9*0
Hydrogen isocyanide anion		191.62	191.80	± 0.32	kJ/mol	27.02593 ± 0.00081	96913-22-3*0
Hydrogen chloride			-161.149	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*815
mu-Oxodioxodinitrogen		984.0	981.1	± 3.2	kJ/mol	76.01113 ± 0.00091	87950-63-8*1
Hydrogen chloride			-166.337	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*832
Chlorine atom heptacation		39520.	39522.	± 11.	kJ/mol	35.44886 ± 0.00090	22537-27-5*0
Iminomethyl		275.79	272.19	± 0.56	kJ/mol	28.03332 ± 0.00082	15691-95-9*0
Methanediimine cation		1137.8	1135.6	± 2.2	kJ/mol	42.03951 ± 0.00082	1189338-16-6*0
Diazenide		175.6	176.7	± 1.6	kJ/mol	29.02197 ± 0.00016	71004-29-0*0
Methanediimine cation		1139.0	1136.2	± 3.2	kJ/mol	42.03951 ± 0.00082	1189338-16-6*1
Hydrogen iodide			-56.525	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*840
C=O-C cation		1585.8	1592.9	± 2.7	kJ/mol	40.0203 ± 0.0016	83483-98-1*0
Nitrous acid anion		-105.82	-109.29	± 0.78	kJ/mol	47.01403 ± 0.00061	256393-36-9*0
Hydrogen iodide			-55.51	± 0.11	kJ/mol	127.912410 ± 0.000076	10034-85-2*820
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*838
Dinitrogen anion		192.5	192.5	± 1.7	kJ/mol	28.01403 ± 0.00014	12185-02-3*0
Hydrogen iodide			-56.395	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*834
Hydrogen peroxide cation		897.31	890.30	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*12
1-Hydroxy-2-propanone		-354.58	-373.91	± 0.84	kJ/mol	74.0785 ± 0.0025	116-09-6*0
Cyclopentadienide		100.7	87.8	± 1.1	kJ/mol	65.0937 ± 0.0040	12127-83-2*0
Water		-286.274	-292.714	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*509
Oxirane		-77.30	-77.97	± 0.62	kJ/mol	44.0526 ± 0.0017	75-21-8*500
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*830
Formic acid			-425.43	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*861
trans-Cycloheptene		141.8	103.8	± 1.9	kJ/mol	96.1702 ± 0.0057	45509-99-7*0
Nitric acid			-205.95	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*818
Hydrogen bromide			-119.90	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*892
Peroxyformate		-340.95	-346.40	± 0.80	kJ/mol	61.0174 ± 0.0012	104960-05-6*0
Hydrogen bromide			-119.45	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*822
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*832
1,3-Butadienyl		385.5	375.3	± 2.0	kJ/mol	53.0825 ± 0.0032	86181-68-2*22
Nitrogen atom		700.553	702.456	± 0.023	kJ/mol	14.006740 ± 0.000070	17778-88-0*2
Hydrogen iodide			-56.734	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*852
Acetic acid			-482.86	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*802
Hydrogen chloride			-166.847	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*850
Nitrosyl nitrite anion		-103.0	-106.1	± 2.8	kJ/mol	76.01223 ± 0.00091	122413-35-80
2-Propene-1,2-diol		-295.5	-314.5	± 1.2	kJ/mol	74.0785 ± 0.0025	44169-27-9*0
Hydrogen bromide			-120.27	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*832
Carbonylmethyloxonium		561.2	552.9	± 3.0	kJ/mol	59.0435 ± 0.0017	24434-00-2*0
Phenol cation		746.14	727.35	± 0.63	kJ/mol	94.1107 ± 0.0048	40932-22-7*0
Phenol anion		22.7	7.8	± 4.9	kJ/mol	94.1118 ± 0.0048	38752-11-3*0
Iodine monochloride		-36.511	-35.537	± 0.063	kJ/mol	162.35717 ± 0.00090	7790-99-0*500
3-Diaziridinylidene		523.0	516.2	± 2.0	kJ/mol	42.04006 ± 0.00082	85513-79-7*0
3-Diaziridinylidene		538.5	531.8	± 2.6	kJ/mol	42.04006 ± 0.00082	85513-79-7*2
Carbonylbis(oxy)		-144.7	-145.8	± 2.4	kJ/mol	60.0089 ± 0.0012	16518-45-9*0
Methoxyoxomethyl		-152.8	-160.5	± 1.2	kJ/mol	59.0440 ± 0.0017	16481-04-2*0
Oxirene		273.18	271.02	± 0.92	kJ/mol	42.0367 ± 0.0016	157-18-6*0
Benzaldehyde cation		896.3	879.7	± 1.8	kJ/mol	106.1214 ± 0.0056	80226-59-1*0
Benzaldehyde anion		-55.7	-73.3	± 2.7	kJ/mol	106.1225 ± 0.0056	34473-57-9*0
Methoxyoxomethyl		-151.9	-160.0	± 2.1	kJ/mol	59.0440 ± 0.0017	16481-04-2*3
Hydrogen fluoride			-322.00	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*825
Oxirene		387.9	384.5	± 1.3	kJ/mol	42.0367 ± 0.0016	157-18-6*1
Benzoyl anion		69.6	57.0	± 4.0	kJ/mol	105.1145 ± 0.0056	78944-74-8*0
Hydrogen iodide			-56.767	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*855
Acetylide		843.0	849.6	± 3.2	kJ/mol	24.0225 ± 0.0016	34846-56-5*0
Cyanogen chloride cation		1326.22	1327.54	± 0.95	kJ/mol	61.4696 ± 0.0012	37612-72-9*0
3-Diaziridinylidene cation		1480.3	1474.3	± 2.5	kJ/mol	42.03951 ± 0.00082	85513-79-70
Hydrogen chloride			-162.011	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*816
3-Diaziridinylidene cation		1497.9	1492.4	± 3.1	kJ/mol	42.03951 ± 0.00082	85513-79-72
Acetyloxoniumylidene		892.3	883.8	± 2.9	kJ/mol	59.0435 ± 0.0017	67057-47-0*1
Hydrogen fluoride			-328.59	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*855
Peroxyhypochlorous acid anion		-32.2	-33.9	± 2.6	kJ/mol	68.4600 ± 0.0011	67952-08-30
Hydrogen fluoride			-322.27	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*832
Hydroperoxonium		762.5	752.7	± 2.0	kJ/mol	35.02207 ± 0.00064	70850-26-9*2
m-Tolualdehyde			-125.7	± 1.3	kJ/mol	120.1485 ± 0.0064	620-23-5*500
Aminomethylidyne anion		481.6	478.1	± 3.2	kJ/mol	28.03387 ± 0.00082	96808-04-7*1
Hydrogen chloride			-166.886	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*852
Methoxyethene		-89.5	-106.8	± 1.1	kJ/mol	58.0791 ± 0.0025	107-25-5*0
Ethynol cation		1063.8	1061.2	± 2.9	kJ/mol	42.0361 ± 0.0016	84005-02-7*0
Cyanogen chloride anion		46.8	51.2	± 3.1	kJ/mol	61.4707 ± 0.0012	12281-43-5*0
2-Hydroxyethylium		1019.1	1007.0	± 1.5	kJ/mol	45.0600 ± 0.0017	38607-31-7*0
Hydrogen fluoride			-324.44	± 0.14	kJ/mol	20.006343 ± 0.000070	7664-39-3*844
Ethynol anion		163.5	165.0	± 3.3	kJ/mol	42.0372 ± 0.0016	864971-50-6*0
Acetate			-485.10	± 0.27	kJ/mol	59.0446 ± 0.0017	71-50-1*800
Acetic acid			-482.88	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*803
Dinitrogen tetraoxide		-37.82	-26.97	± 0.19	kJ/mol	92.0111 ± 0.0012	10544-72-6*500
Hexafluorobenzene cation		13.53	9.74	± 0.88	kJ/mol	186.0541 ± 0.0048	34528-23-9*0
Acetic acid			-482.97	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*804
Diiodine cation		963.523	960.408	± 0.018	kJ/mol	253.808391 ± 0.000060	28712-14-3*0
Nitric acid			-206.03	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*819
Hydrogen fluoride			-321.86	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*888
Acetic acid			-483.05	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*805
(Formyloxy)methyl		-151.5	-159.6	± 1.1	kJ/mol	59.0440 ± 0.0017	3122-12-1*0
Carboxymethyl		-226.7	-236.5	± 1.1	kJ/mol	59.0440 ± 0.0017	2887-46-9*0
Iminomethide		237.3	233.6	± 1.8	kJ/mol	28.03387 ± 0.00082	90623-30-6*0
(Iminomethyl)imidogen		420.1	413.3	± 3.0	kJ/mol	42.04006 ± 0.00082	87570-07-8*0
(Iminomethyl)imidogen		430.5	423.6	± 3.4	kJ/mol	42.04006 ± 0.00082	87570-07-8*12
Acetic acid			-483.15	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*807
Isocyanogen chloride cation		1481.0	1482.2	± 3.9	kJ/mol	61.4696 ± 0.0012	956475-91-5*0
Isocyanogen chloride anion		102.9	107.4	± 3.9	kJ/mol	61.4707 ± 0.0012	923019-39-0*0
Hydrogen fluoride			-321.92	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*904
Hydrodioxonitrate		-62.0	-68.4	± 3.2	kJ/mol	47.01403 ± 0.00061	61508-71-2*0
Ethynol		406.4	403.2	± 3.2	kJ/mol	42.0367 ± 0.0016	32038-79-2*12
Cyanogen bromide cation		1331.1	1324.8	± 1.4	kJ/mol	105.9209 ± 0.0013	34749-77-4*0
2-Methoxy-2-oxoethyl		-203.0	-218.2	± 1.5	kJ/mol	73.0706 ± 0.0025	54668-31-4*0
Ethynol		409.4	406.3	± 3.2	kJ/mol	42.0367 ± 0.0016	32038-79-2*13
Imidogen		509.34	509.39	± 0.17	kJ/mol	15.014680 ± 0.000099	13774-92-0*2
Ethynol		455.5	452.2	± 3.2	kJ/mol	42.0367 ± 0.0016	32038-79-2*14
Ethynol		464.2	460.9	± 3.2	kJ/mol	42.0367 ± 0.0016	32038-79-2*15
Acetic acid			-483.19	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*808
Acetic acid			-483.23	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*809
Pyridiniumyl		1051.33	1035.38	± 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
Water		-286.274	-285.801	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*499
Nitrosodioxaziridine		413.7	408.2	± 1.8	kJ/mol	76.01168 ± 0.00091	132871-99-9*0
Acetic acid			-483.29	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*811
Water dimer cation		556.9	546.4	± 3.0	kJ/mol	36.03001 ± 0.00066	158061-35-9*0
Acetone enol		-151.35	-168.15	± 0.68	kJ/mol	58.0791 ± 0.0025	29456-04-0*0
Acetone enol		-145.3	-162.6	± 1.9	kJ/mol	58.0791 ± 0.0025	29456-04-0*2
Hydrogen chloride			-166.923	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*855
(Acetyloxy)methyl		-200.2	-214.0	± 1.5	kJ/mol	73.0706 ± 0.0025	2887-49-2*0
Hydrogen bromide			-120.01	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*829
Hydrogen peroxide cation		931.06	924.18	± 0.98	kJ/mol	34.01413 ± 0.00062	12325-10-9*21
1-Propen-2-ol-1-yl		101.57	90.21	± 0.87	kJ/mol	57.0712 ± 0.0024	1976041-84-5*0
1-Propen-2-ol-1-yl		106.5	94.5	± 1.9	kJ/mol	57.0712 ± 0.0024	1976041-84-5*12
1-Propen-2-ol-1-yl		114.0	102.8	± 1.9	kJ/mol	57.0712 ± 0.0024	1976041-84-5*21
1-Propen-2-ol-1-yl		115.1	104.3	± 1.9	kJ/mol	57.0712 ± 0.0024	1976041-84-5*22
Ammonium hydroxide			-366.32	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*843
Oxooxoniumylmethoxy		1178.0	1177.3	± 5.7	kJ/mol	60.0084 ± 0.0012	952586-28-6*0
2-Hydroxyethenyl		137.99	132.17	± 0.72	kJ/mol	43.0446 ± 0.0016	108665-16-3*0
Oxiranylidene		213.5	209.2	± 1.4	kJ/mol	42.0367 ± 0.0016	50983-85-2*0
2-Cyclopropyn-1-ylidene		898.6	905.5	± 1.6	kJ/mol	36.0321 ± 0.0024	102508-15-6*0
Hydrogen bromide			-120.74	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*852
Hypochloroperoxoous acid, hydroxy ester		48.4	41.6	± 1.8	kJ/mol	84.4588 ± 0.0013	928652-99-7*0
Isocyanogen bromide cation		1469.7	1464.0	± 5.9	kJ/mol	105.9209 ± 0.0013	238754-53-5*0
Hydrogen fluoride			-322.02	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*828
Difluorodioxidane anion		-251.	-251.	± 28.	kJ/mol	69.99615 ± 0.00060	7783-45-10
Methyl nitrite		-52.38	-64.34	± 0.89	kJ/mol	61.0401 ± 0.0010	624-91-9*1
Methyl nitrite			-88.73	± 0.55	kJ/mol	61.0401 ± 0.0010	624-91-9*500
Hydrogen iodide			-55.968	± 0.099	kJ/mol	127.912410 ± 0.000076	10034-85-2*825
Ammonium hydroxide			-366.30	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*821
Ethyl nitrite		-80.2	-98.4	± 1.9	kJ/mol	75.0666 ± 0.0017	109-95-5*2
Ethyl nitrite		-78.1	-97.0	± 1.9	kJ/mol	75.0666 ± 0.0017	109-95-5*3
Hydrogen peroxide cation		897.29	890.30	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*0
Propyl nitrite		-95.8	-119.7	± 1.8	kJ/mol	89.0932 ± 0.0025	543-67-9*0
Propyl nitrite		-95.5	-120.2	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*2
Propyl nitrite		-95.7	-120.2	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*3
Propyl nitrite		-94.9	-119.5	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*4
Propyl nitrite		-94.8	-119.1	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*5
Propyl nitrite		-92.9	-117.9	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*6
Propyl nitrite		-92.7	-117.8	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*7
Propyl nitrite		-91.3	-116.2	± 2.8	kJ/mol	89.0932 ± 0.0025	543-67-9*8
1,2-Dibromoethene		121.2	101.0	± 2.0	kJ/mol	185.8453 ± 0.0026	540-49-8*0
Acetic acid			-483.37	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*812
Acetic acid			-483.45	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*813
Acetic acid			-483.53	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*814
Nitrogen sesquioxide cation		1027.7	1023.7	± 4.8	kJ/mol	76.01113 ± 0.00091	10544-73-70
2,2,4-Trimethylpentane		-171.0	-223.5	± 1.5	kJ/mol	114.2285 ± 0.0065	540-84-1*0
Diazomethyl		467.77	465.21	± 0.68	kJ/mol	41.03212 ± 0.00082	20813-32-5*0
Methoxyethene		-82.1	-99.2	± 2.4	kJ/mol	58.0791 ± 0.0025	107-25-5*1
O--HH Complex		247.2	248.2	± 2.0	kJ/mol	18.01528 ± 0.00033	7732-18-5102
Ethoxyethene		-118.0	-136.5	± 1.5	kJ/mol	72.1057 ± 0.0033	109-92-2*0
Hydroxyformyl		-181.15	-183.70	± 0.40	kJ/mol	45.0174 ± 0.0010	2564-86-5*0
Ammonium hydroxide			-366.35	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*841
Hydrogen chloride			-166.404	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*833
Hydrogen bromide			-120.68	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*846
Diazomethyl		652.7	649.8	± 1.3	kJ/mol	41.03212 ± 0.00082	20813-32-5*2
Dichloromethylene		229.87	231.05	± 0.64	kJ/mol	82.9161 ± 0.0020	1605-72-7*0
1-Methylethylidene		316.02	303.12	± 0.98	kJ/mol	42.0797 ± 0.0024	40852-89-9*0
Hydrogen chloride			-166.430	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*895
Diazomethyl		652.9	649.9	± 2.3	kJ/mol	41.03212 ± 0.00082	20813-32-5*21
Oxoethylidene		261.1	258.3	± 1.1	kJ/mol	42.0367 ± 0.0016	39920-84-8*0
1,1-Dibromoethane			-67.2	± 1.3	kJ/mol	187.8612 ± 0.0026	557-91-5*500
Perchloric acid cation		1190.2	1180.6	± 3.3	kJ/mol	100.4577 ± 0.0015	91712-47-9*0
Dioxoethylium		688.7	689.9	± 3.0	kJ/mol	57.0276 ± 0.0017	1994332-01-20
Acetic acid			-483.61	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*815
Ethanedial anion		-188.7	-190.2	± 3.1	kJ/mol	57.0287 ± 0.0017	1994332-01-2*0
3-Buten-2-one		-95.40	-110.94	± 0.85	kJ/mol	70.0898 ± 0.0032	78-94-4*0
Hydrogen chloride			-166.947	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*861
3-Buten-2-one		-93.8	-109.9	± 1.6	kJ/mol	70.0898 ± 0.0032	78-94-4*2
1,2-Propadien-1-yl-3-ylidene anion		621.5	628.9	± 1.2	kJ/mol	36.0326 ± 0.0024	109292-47-9*1
1,3-Butadien-2-ol		-48.1	-64.4	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*12
Acetic acid			-483.76	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*816
1,3-Butadien-2-ol		-37.9	-54.3	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*22
Diazomethylium		1395.7	1394.1	± 1.3	kJ/mol	41.03157 ± 0.00082	271249-81-1*0
1,3-Butadien-2-ol		-42.7	-58.8	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*2
1,3-Butadien-2-ol		-53.4	-68.4	± 1.5	kJ/mol	70.0898 ± 0.0032	59120-04-6*0
Cyanogen iodide cation		1271.3	1271.2	± 1.7	kJ/mol	152.92136 ± 0.00080	34749-78-5*0
Ethylene anion		232.0	225.6	± 2.0	kJ/mol	28.0537 ± 0.0016	34527-91-8*0
Hydrogen fluoride			-322.08	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*830
Acetic acid			-483.93	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*817
Hydrogen bromide			-120.58	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*898
Hydroxyoxoethenylium		866.4	865.2	± 3.5	kJ/mol	57.0276 ± 0.0017	1994332-00-10
2-Oxo-1-ethylium-1-yl		1289.4	1286.8	± 2.5	kJ/mol	42.0361 ± 0.0016	214464-96-7*1
Acetic acid			-484.11	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*818
Acrolein cation		919.95	909.98	± 0.79	kJ/mol	56.0627 ± 0.0024	84005-05-0*0
Acrolein cation		930.8	920.9	± 1.9	kJ/mol	56.0627 ± 0.0024	84005-05-0*2
Acrolein anion		-71.9	-81.4	± 3.1	kJ/mol	56.0638 ± 0.0024	23555-87-5*0
Acrolein anion		-68.0	-78.0	± 3.5	kJ/mol	56.0638 ± 0.0024	23555-87-5*1
Ethynediolide		-132.9	-134.0	± 3.5	kJ/mol	57.0287 ± 0.0017	1994332-00-1*0
Ammonium hydroxide			-366.33	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*891
Oxoethylidene anion		86.9	84.2	± 2.1	kJ/mol	42.0372 ± 0.0016	106543-38-8*0
1,2,4-Trioxolane		-209.7	-227.9	± 3.1	kJ/mol	76.0514 ± 0.0019	289-14-5*0
Propyn-1-ol cation		959.9	951.6	± 3.0	kJ/mol	56.0627 ± 0.0024	84005-04-9*0
Trioxodinitrate anion		-104.2	-107.5	± 1.9	kJ/mol	76.01223 ± 0.00091	194856-62-7*0
2-Methyloxirene		344.0	334.8	± 1.8	kJ/mol	56.0633 ± 0.0024	2835-41-8*1
2-Methyloxirene		346.7	336.8	± 2.5	kJ/mol	56.0633 ± 0.0024	2835-41-8*12
1-Propen-1-yl-3-ylidene		656.7	653.3	± 1.1	kJ/mol	39.0559 ± 0.0024	84654-90-0*0
Ethoxyethene		-111.5	-135.4	± 2.3	kJ/mol	72.1057 ± 0.0033	109-92-2*21
Tetroxidane		-31.25	-41.75	± 0.64	kJ/mol	66.0135 ± 0.0012	29683-94-1*22
Ethoxyethene		-111.0	-133.2	± 2.6	kJ/mol	72.1057 ± 0.0033	109-92-2*1
Acetic acid			-484.23	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*819
Acryloyl		101.2	96.4	± 1.4	kJ/mol	55.0553 ± 0.0024	72241-20-4*0
Acryloyl		101.2	96.0	± 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		1036.2	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
Hydrogen bromide			-120.58	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*957
Hydrazoic acid anion		309.0	303.1	± 2.3	kJ/mol	43.02871 ± 0.00022	203264-98-6*0
Acetic acid			-484.32	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*820
1-Formylethenylium		1023.5	1018.0	± 2.3	kJ/mol	55.0548 ± 0.0024	101705-89-9*0
Hydrogen bromide			-119.85	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*828
Nitrosodioxaziridine		413.9	408.1	± 3.2	kJ/mol	76.01168 ± 0.00091	132871-99-9*2
Nitric acid			-206.40	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*844
Hydrogen iodide			-56.077	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*892
3-Oxo-1-propenyl		190.93	185.38	± 0.91	kJ/mol	55.0553 ± 0.0024	206255-29-0*0
Hydrogen chloride			-166.763	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*843
3-Oxo-1-propenyl		191.6	185.9	± 2.1	kJ/mol	55.0553 ± 0.0024	206255-29-0*2
Cyclopropane		41.47	35.78	± 0.48	kJ/mol	42.0797 ± 0.0024	75-19-4*500
3-Oxo-1-propenyl		201.3	195.5	± 2.0	kJ/mol	55.0553 ± 0.0024	206255-29-0*22
3-Oxo-1-propenyl		206.0	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	1179.9	± 3.0	kJ/mol	55.0548 ± 0.0024	101705-90-2*1
Nitrosyl nitrate		48.3	40.4	± 1.8	kJ/mol	92.0111 ± 0.0012	15969-55-8*0
3-Oxo-1-propenylium		1185.6	1179.8	± 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
(Methylamino)methyl anion		202.1	185.1	± 3.1	kJ/mol	44.0763 ± 0.0017	31277-25-50
3-Oxo-1-propenylium		1195.6	1189.8	± 3.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*112
3-Oxo-1-propenylium		1205.7	1200.2	± 3.8	kJ/mol	55.0548 ± 0.0024	101705-90-2*122
2-Formylethen-1-ide		27.3	21.3	± 2.5	kJ/mol	55.0559 ± 0.0024	135924-69-5*0
2-Formylethen-1-ide		27.3	20.5	± 2.5	kJ/mol	55.0559 ± 0.0024	135924-69-5*1
2-Formylethen-1-ide		30.5	23.7	± 3.1	kJ/mol	55.0559 ± 0.0024	135924-69-5*2
Hydrogen chloride			-166.488	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*835
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	58.4	± 3.1	kJ/mol	55.0559 ± 0.0024	135924-69-5*12
Hydrogen chloride			-166.752	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*899
1,2-Propadien-1-one anion		49.7	48.5	± 3.1	kJ/mol	54.0479 ± 0.0024	159171-62-7*0
Peroxychlorous acid		95.4	89.8	± 2.0	kJ/mol	84.4588 ± 0.0013	177778-92-6*0
Chloromethylene		320.35	320.64	± 0.89	kJ/mol	48.4713 ± 0.0012	2108-20-5*0
Hydrogen chloride			-165.820	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*892
1-Oxo-2-propyn-1-ylium		1001.7	1003.1	± 3.0	kJ/mol	53.0389 ± 0.0024	53474-99-0*0
3-Oxo-1,2-propadien-1-yl anion		179.4	182.0	± 3.2	kJ/mol	53.0400 ± 0.0024	557113-97-0*0
Acetic acid			-484.44	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*821
Hydrogen cyanide anion		129.531	129.053	± 0.088	kJ/mol	27.02593 ± 0.00081	12334-27-9*0
Dioxohydrazine		192.3	188.7	± 1.8	kJ/mol	60.01228 ± 0.00062	16824-89-8*1
Formylethynyl anion		100.4	101.7	± 3.4	kJ/mol	53.0400 ± 0.0024	85905-64-2*0
Hydrogen iodide			-55.35	± 0.11	kJ/mol	127.912410 ± 0.000076	10034-85-2*819
2-Cyclopropen-1-one cation		1078.6	1075.6	± 2.0	kJ/mol	54.0468 ± 0.0024	100815-68-7*0
Hydrogen chloride			-166.708	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*896
Nitric acid			-193.77	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*803
Hydrogen bromide			-120.78	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*855
Hydrogen fluoride			-322.13	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*908
Hydrogen iodide			-56.198	± 0.097	kJ/mol	127.912410 ± 0.000076	10034-85-2*830
Isourea		-156.1	-172.7	± 2.6	kJ/mol	60.05534 ± 0.00091	4744-36-9*0
Oxonium			-285.800	± 0.022	kJ/mol	19.02267 ± 0.00037	13968-08-6*800
Hydrogen iodide			-56.278	± 0.092	kJ/mol	127.912410 ± 0.000076	10034-85-2*831
Carbamoyl anion		-81.9	-87.8	± 3.1	kJ/mol	44.03327 ± 0.00087	78944-69-1*0
1-Propen-1-yl-3-ylidene		656.7	653.2	± 2.0	kJ/mol	39.0559 ± 0.0024	84654-90-0*12
Carbamoyl		74.1	68.3	± 2.7	kJ/mol	44.03272 ± 0.00087	2858-51-70
Carbamoyl		76.4	69.9	± 3.2	kJ/mol	44.03272 ± 0.00087	2858-51-72
Carbamoyl		96.3	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
1-Propen-1-yl-3-ylidene		665.7	662.3	± 2.0	kJ/mol	39.0559 ± 0.0024	84654-90-0*13
Hydrogen chloride			-162.856	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*817
(Hydroxyimino)methyl		250.1	244.3	± 1.9	kJ/mol	44.03272 ± 0.00087	206442-92-4*0
Ethoxyethene		-109.0	-132.2	± 2.3	kJ/mol	72.1057 ± 0.0033	109-92-2*11
Chlorohydroxymethyl		-54.9	-60.6	± 1.1	kJ/mol	65.4787 ± 0.0012	147139-06-8*0
(Hydroxyimino)methyl		262.5	257.1	± 2.5	kJ/mol	44.03272 ± 0.00087	206442-92-4*3
(Hydroxyimino)methyl		281.4	275.9	± 2.5	kJ/mol	44.03272 ± 0.00087	206442-92-4*4
Hydroperoxonium		738.2	727.9	± 1.2	kJ/mol	35.02207 ± 0.00064	70850-26-9*0
Fluorosyl fluoride cation		1413.1	1413.4	± 3.5	kJ/mol	53.99566 ± 0.00030	86825-50-50
Methanediol		-379.16	-392.55	± 0.74	kJ/mol	48.0413 ± 0.0010	463-57-0*0
Ethanimine		55.74	41.11	± 0.72	kJ/mol	43.0678 ± 0.0016	20729-41-3*0
Hydrogen iodide			-54.592	± 0.092	kJ/mol	127.912410 ± 0.000076	10034-85-2*817
1-Propen-1-yl-3-ylidene		699.2	696.3	± 3.4	kJ/mol	39.0559 ± 0.0024	84654-90-0*2
Formaldoxime		30.5	19.9	± 1.3	kJ/mol	45.04066 ± 0.00088	75-17-2*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
Hydrogen iodide			-56.416	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*835
Hydrogen peroxide		-129.397	-135.403	± 0.058	kJ/mol	34.01468 ± 0.00062	7722-84-1*1
Hydrogen chloride			-163.675	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*818
Hydrogen bromide			-119.70	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*825
Hydrogen fluoride			-330.14	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*861
Chloroethane		-134.34	-135.96	± 0.25	kJ/mol	64.5138 ± 0.0019	75-00-3*500
Hydrogen chloride			-166.254	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*831
Acetic acid			-484.51	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*822
Tetraoxidanyl		76.7	69.5	± 6.1	kJ/mol	65.0055 ± 0.0012	69696-93-1*1
Acetic acid			-484.54	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*891
Hydrogen iodide			-56.629	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*843
Hydrazine anion		232.3	217.9	± 4.1	kJ/mol	32.04579 ± 0.00031	65391-88-0*0
Ethylideneammoniumylidene		1309.9	1300.4	± 3.0	kJ/mol	42.0594 ± 0.0016	91127-36-5*1
Ethylideneazanide		147.8	137.5	± 3.2	kJ/mol	42.0604 ± 0.0016	144810-43-5*0
Hydrogen chloride			-166.738	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*842
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*837
Nitrato		1290.61	1285.90	± 0.86	kJ/mol	62.00439 ± 0.00090	133057-96-2*0
1-Cyanoethylidene		437.5	433.8	± 1.5	kJ/mol	53.0627 ± 0.0024	498544-34-6*0
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*831
Hydrogen bromide			-120.38	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*835
Tetraoxidanyl		2.1	0.4	± 2.9	kJ/mol	65.0055 ± 0.0012	69696-93-1*0
Oxonium		605.94	599.13	± 0.17	kJ/mol	19.02267 ± 0.00037	13968-08-6*1
2-Iminoethyl		219.30	208.62	± 0.86	kJ/mol	42.0599 ± 0.0016	73843-90-0*0
Carbon dianion		1027.5	1033.0	± 4.9	kJ/mol	12.01180 ± 0.00080	50802-47-6*0
Hydrogen iodide			-56.671	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*846
3-Imino-2-propen-1-ylidene		530.7	526.3	± 1.2	kJ/mol	53.0627 ± 0.0024	916765-05-4*0
Acetic acid			-484.68	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*892
3-Imino-2-propen-1-ylidene		571.8	567.0	± 1.6	kJ/mol	53.0627 ± 0.0024	916765-05-4*2
Isocyanomethane			146.5	± 2.2	kJ/mol	41.0520 ± 0.0016	593-75-9*500
2-Iminoethylium		1108.3	1097.6	± 3.0	kJ/mol	42.0594 ± 0.0016	73843-91-1*0
Hydrogen iodide			-55.859	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*891
Hydrogen fluoride			-321.95	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*906
2-(Methylidyneamino)ethenyl		600.7	596.4	± 1.2	kJ/mol	53.0627 ± 0.0024	123416-74-0*0
Carbon		1114.959	1120.105	± 0.041	kJ/mol	12.01070 ± 0.00080	7440-44-0*3
2-(Methylidyneamino)ethenyl		634.5	630.4	± 1.6	kJ/mol	53.0627 ± 0.0024	123416-74-0*2
Acetic acid			-484.74	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*830
Hydrogen bromide			-120.45	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*839
2-Iminoethylium		1148.6	1140.2	± 3.3	kJ/mol	42.0594 ± 0.0016	73843-91-1*1
Trihydrogen		254.5	250.7	± 1.2	kJ/mol	3.02382 ± 0.00021	12184-91-7*200
Hydrazoic acid			261.46	± 0.65	kJ/mol	43.02816 ± 0.00022	7782-79-8*500
Hydrogen iodide			-56.324	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*832
1,3-Butadiyne-1,4-diyl		1083.84	1093.65	± 0.82	kJ/mol	48.0428 ± 0.0032	78015-07-3*2
Hydrogen fluoride			-333.06	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*866
Hydrogen bromide			-72.01	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*801
Hydrogen iodide			-56.437	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*837
Nitric acid			-200.32	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*807
Hydrogen iodide			-54.03	± 0.17	kJ/mol	127.912410 ± 0.000076	10034-85-2*816
Acetic acid			-484.77	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*831
2-Cyanovinyl		447.78	445.38	± 0.99	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		263.7	261.4	± 1.8	kJ/mol	52.0553 ± 0.0024	85398-67-00
Acetic acid			-484.78	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*832
Hydrogen chloride			-166.517	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*837
2-Isocyanovinyl		543.2	541.8	± 1.7	kJ/mol	52.0547 ± 0.0024	225798-14-1*0
Ethylperoxy		-6.28	-22.24	± 0.64	kJ/mol	61.0599 ± 0.0017	3170-61-4*0
Propynylidene		597.7	599.4	± 1.3	kJ/mol	38.0480 ± 0.0024	67152-18-5*2
Cyanomethyliumyl		1506.5	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		479.7	483.0	± 1.1	kJ/mol	39.0361 ± 0.0016	2612-62-6*0
Propargylenide		434.4	437.6	± 1.1	kJ/mol	38.0485 ± 0.0024	82906-05-6*0
Propylidyne		492.6	483.0	± 1.1	kJ/mol	41.0718 ± 0.0024	85056-54-8*0
Isocyanomethyliumyl		1505.8	1507.7	± 3.3	kJ/mol	39.0355 ± 0.0016	99045-54-2*0
Isocyanomethylene anion		400.4	401.1	± 2.1	kJ/mol	39.0366 ± 0.0016	144141-01-5*0
Isocyanomethylene		582.2	584.4	± 1.7	kJ/mol	39.0361 ± 0.0016	78694-65-2*0
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*895
3-Oxo-1,2-propadien-1-ylium-1-yl		1380.3	1385.6	± 3.8	kJ/mol	52.0310 ± 0.0024	151455-13-9*0
3-Oxo-1,2-propadienylidene anion		224.3	230.1	± 3.5	kJ/mol	52.0320 ± 0.0024	109292-50-4*0
Nitric acid			-203.81	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*812
Pentachloroethylium		838.1	836.4	± 3.3	kJ/mol	201.2844 ± 0.0048	7094-17-90
Peroxyformyl		-100.42	-105.53	± 0.67	kJ/mol	61.0168 ± 0.0012	56240-83-6*0
Pentachloroethanide		-281.8	-280.3	± 3.9	kJ/mol	201.2854 ± 0.0048	263019-83-6*0
Isoformyl anion		55.7	58.4	± 1.8	kJ/mol	29.01859 ± 0.00086	81747-63-9*0
Trioxidane		-81.71	-90.31	± 0.41	kJ/mol	50.01408 ± 0.00091	14699-99-1*0
2-Iminoethyl anion		104.5	94.1	± 2.1	kJ/mol	42.0604 ± 0.0016	73843-87-5*0
Peroxyformic acid		-279.24	-288.38	± 0.63	kJ/mol	62.0248 ± 0.0012	107-32-4*0
Ethoxyoxoniumylidene		923.7	911.4	± 1.5	kJ/mol	61.0594 ± 0.0017	268728-77-4*0
Carbon trianion		1813.2	1818.6	± 5.9	kJ/mol	12.01235 ± 0.00080	50802-48-7*0
Hydrogen chloride			-164.169	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*819
1,3-Cyclobutadiene cation		1215.7	1207.4	± 3.0	kJ/mol	52.0740 ± 0.0032	34531-09-4*0
Ethoxyoxoniumylidene		962.3	947.6	± 1.7	kJ/mol	61.0594 ± 0.0017	268728-77-4*2
Ethoxyoxoniumylidene		967.4	951.5	± 2.4	kJ/mol	61.0594 ± 0.0017	268728-77-4*23
2-Methyl-2-cyclopropen-1-ylidene		448.0	441.8	± 1.2	kJ/mol	52.0746 ± 0.0032	185841-59-2*0
2-Methyl-2-cyclopropen-1-ylidene		670.6	664.6	± 2.8	kJ/mol	52.0746 ± 0.0032	185841-59-2*1
Ethaneperoxolate		-120.51	-136.58	± 0.72	kJ/mol	61.0604 ± 0.0017	268728-75-2*0
Nitric acid			-206.51	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*855
Nitric acid			-201.98	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*809
Ethaneperoxolate		-120.0	-135.6	± 1.9	kJ/mol	61.0604 ± 0.0017	268728-75-2*1
Oxiranylium		901.3	893.3	± 1.4	kJ/mol	43.0441 ± 0.0016	57789-76-1*0
Acetic acid			-484.79	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*833
Vinylvinylidene		494.1	488.8	± 1.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*0
Vinylvinylidene		690.4	684.6	± 2.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*1
1-Iminoethyl		233.1	223.0	± 1.1	kJ/mol	42.0599 ± 0.0016	128365-64-0*0
Vinylvinylidene		695.4	689.0	± 3.3	kJ/mol	52.0746 ± 0.0032	148759-16-4*12
Vinylvinylidene cation		1429.8	1424.5	± 2.0	kJ/mol	52.0740 ± 0.0032	161054-20-2*0
Vinylvinylidene cation		1437.8	1432.2	± 2.7	kJ/mol	52.0740 ± 0.0032	161054-20-2*2
Vinylvinylidene anion		405.7	399.0	± 2.0	kJ/mol	52.0751 ± 0.0032	167386-49-4*0
Vinylvinylidene anion		423.2	416.6	± 2.7	kJ/mol	52.0751 ± 0.0032	167386-49-4*2
1-Iminoethyl		252.3	242.3	± 2.0	kJ/mol	42.0599 ± 0.0016	128365-64-0*1
Trihydrogen cation		1110.577	1106.695	± 0.013	kJ/mol	3.02327 ± 0.00021	28132-48-1*1
1,2-Butadien-1-ylidene		511.8	506.2	± 2.1	kJ/mol	52.0746 ± 0.0032	119908-55-3*0
1,2-Butadien-1-ylidene		651.7	646.2	± 3.7	kJ/mol	52.0746 ± 0.0032	119908-55-3*1
Nitrosodioxaziridine		415.4	409.5	± 2.8	kJ/mol	76.01168 ± 0.00091	132871-99-9*3
1,3-Butadienylium		1133.6	1123.6	± 2.5	kJ/mol	53.0820 ± 0.0032	86181-69-3*0
1-Hydroperoxyethylium		690.4	675.6	± 1.5	kJ/mol	61.0594 ± 0.0017	126898-98-40
Isocyanoamidogen		489.6	487.6	± 1.2	kJ/mol	41.03212 ± 0.00082	947408-73-3*0
Chlorous acid cation		996.6	991.6	± 3.1	kJ/mol	68.4589 ± 0.0011	99559-66-70
Hydrogen iodide			-56.453	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*838
Hydrogen bromide			-93.01	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*803
1,2-Dichloroethene		3.80	-1.52	± 0.55	kJ/mol	96.9427 ± 0.0024	540-59-0*0
Diatomic bromine cation		1060.31	1045.36	± 0.23	kJ/mol	159.8075 ± 0.0020	12595-71-0*0
1,2,3-Butatrien-1-ylium		1271.7	1269.9	± 1.1	kJ/mol	51.0661 ± 0.0032	81932-79-8*0
Hydrogen bromide			-102.55	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*805
Nitric acid			-206.05	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*820
1-Hydroperoxyethylium		841.3	830.1	± 1.7	kJ/mol	61.0594 ± 0.0017	126898-98-41
1-Iminoethylium		833.7	823.2	± 3.0	kJ/mol	42.0594 ± 0.0016	128365-64-00
1-Iminoethylium		1342.1	1333.2	± 3.9	kJ/mol	42.0594 ± 0.0016	128365-64-01
1-Hydroperoxyethylium		691.7	676.1	± 2.3	kJ/mol	61.0594 ± 0.0017	126898-98-422
1-Buten-3-yn-1-yl		547.23	544.71	± 0.87	kJ/mol	51.0666 ± 0.0032	2810-61-9*0
1-Buten-3-ynylium		1482.3	1480.2	± 1.5	kJ/mol	51.0661 ± 0.0032	84654-85-3*0
But-1-en-3-yn-1-ide		419.7	419.1	± 1.2	kJ/mol	51.0672 ± 0.0032	119611-65-3*0
Hydrogen bromide			-111.03	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*809
Ammonium hydroxide			-366.28	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*846
1-Hydroperoxyethylium		843.6	831.6	± 2.6	kJ/mol	61.0594 ± 0.0017	126898-98-412
Ammonium hydroxide			-366.35	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*825
Acetic acid			-484.80	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*895
3-Buten-1-ynylium		1572.6	1570.2	± 1.7	kJ/mol	51.0661 ± 0.0032	103928-84-3*0
But-3-en-1-yn-1-ide		326.6	323.5	± 1.4	kJ/mol	51.0672 ± 0.0032	58870-47-6*0
Hydrogen iodide			-56.784	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*861
Nitric acid			-206.32	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*841
2-Hydroperoxyethyl		64.5	51.2	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-97-3*0
2-Hydroperoxyethyl		64.5	50.8	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-97-3*3
3-Methylene-1-cyclopropen-1-ylium		1398.7	1395.4	± 1.7	kJ/mol	51.0661 ± 0.0032	117469-28-0*0
2-Hydroperoxyethyl		65.0	51.6	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*1
Cyanomethylium		1256.24	1253.60	± 0.61	kJ/mol	40.0435 ± 0.0016	34430-18-7*0
Oxiranyl anion		121.3	113.4	± 1.5	kJ/mol	43.0452 ± 0.0016	72722-59-9*0
2-Cyclopropen-1-ylidenemethylium		1346.3	1343.8	± 1.8	kJ/mol	51.0661 ± 0.0032	112936-36-4*0
2-Hydroperoxyethyl		65.5	51.5	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*31
2-Hydroperoxyethyl		65.5	51.9	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*12
1-Iminoethylium		1378.3	1368.8	± 4.3	kJ/mol	42.0594 ± 0.0016	128365-64-011
1-Iminoethanide		185.6	175.6	± 3.2	kJ/mol	42.0604 ± 0.0016	128365-65-10
1,3-Cyclobutadien-1-ylium		1388.2	1383.3	± 1.9	kJ/mol	51.0661 ± 0.0032	81913-77-1*0
Methane anion		27.3	19.4	± 5.1	kJ/mol	16.04301 ± 0.00085	27680-53-1*0
Trihydrogen		745.878	743.199	± 0.062	kJ/mol	3.02382 ± 0.00021	12184-91-7*0
1-Iminoethanide		193.1	182.5	± 3.6	kJ/mol	42.0604 ± 0.0016	128365-65-11
Cyclobutenide		320.3	307.9	± 3.2	kJ/mol	53.0830 ± 0.0032	60211-42-9*0
Ethenyldioxy		118.7	109.8	± 1.3	kJ/mol	59.0440 ± 0.0017	88181-72-0*0
Hydrogen fluoride			-322.44	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*834
Hydrogen iodide			-56.048	± 0.097	kJ/mol	127.912410 ± 0.000076	10034-85-2*828
Hydrogen iodide			-56.558	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*841
Phenylperoxy cation		1018.6	1001.5	± 3.1	kJ/mol	109.1022 ± 0.0049	956036-17-2*0
Phenylperoxy anion		-39.3	-56.2	± 3.3	kJ/mol	109.1032 ± 0.0049	956036-17-20
Ethenyldioxy		122.9	113.2	± 2.2	kJ/mol	59.0440 ± 0.0017	88181-72-0*2
Hydroxyamidogen		101.28	94.45	± 0.87	kJ/mol	32.02202 ± 0.00034	13940-32-4*0
Isocyanic acid anion		-54.2	-57.4	± 3.0	kJ/mol	43.02533 ± 0.00086	444010-28-00
1,3-Propanediyl		319.1	307.6	± 1.6	kJ/mol	42.0797 ± 0.0024	32458-33-6*1
Hydrogen chloride			-164.500	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*820
Fulvene cation		1043.5	1027.7	± 2.7	kJ/mol	78.1113 ± 0.0048	34504-75-1*0
Fulvene anion		191.3	176.2	± 4.0	kJ/mol	78.1124 ± 0.0048	34504-63-7*0
Isocyanoamidogen		828.2	825.5	± 1.3	kJ/mol	41.03212 ± 0.00082	947408-73-3*2
Carbonate			-675.160	± 0.053	kJ/mol	60.0100 ± 0.0012	3812-32-6*800
Dichlorovinylidene		424.2	427.5	± 3.0	kJ/mol	94.9268 ± 0.0024	20394-25-6*0
Formaldehyde		-105.265	-109.231	± 0.095	kJ/mol	30.02598 ± 0.00087	50-00-0*22
Fulvenone cation		913.3	903.2	± 1.9	kJ/mol	92.0948 ± 0.0048	884319-80-6*0
Chlorovinylidene		429.2	430.9	± 2.9	kJ/mol	60.4820 ± 0.0018	70277-82-6*0
Hydrogen fluoride			-323.40	± 0.12	kJ/mol	20.006343 ± 0.000070	7664-39-3*841
Isocyanoamidogen		837.8	835.2	± 2.1	kJ/mol	41.03212 ± 0.00082	947408-73-3*21
2-Methyliumylidynehydrazin-2-ium-1-ide		1544.1	1542.4	± 1.7	kJ/mol	41.03157 ± 0.00082	947408-73-30
Silicon atom tetracation		10401.14	10404.12	± 0.59	kJ/mol	28.08331 ± 0.00030	22537-24-2*0
Silicon anion		316.31	319.30	± 0.59	kJ/mol	28.08605 ± 0.00030	14337-02-1*0
Dioxyamidogen		251.2	244.6	± 2.5	kJ/mol	47.01348 ± 0.00061	71843-95-3*1
N-Methylenemethaniminium		904.3	893.3	± 3.1	kJ/mol	42.0594 ± 0.0016	88333-01-1*0
Disilicon anion		375.2	379.1	± 1.8	kJ/mol	56.17155 ± 0.00060	64236-73-3*0
Hydroxyaminylium		1019.5	1012.3	± 2.5	kJ/mol	32.02147 ± 0.00034	66097-71-0*0
N-Methylenemethaniminium		1157.1	1147.2	± 4.0	kJ/mol	42.0594 ± 0.0016	88333-01-1*1
Hydrogen bromide			-119.53	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*891
2-Methanidylidynehydrazin-2-ium-1-ide		281.8	279.0	± 1.4	kJ/mol	41.03267 ± 0.00082	947408-74-40
N-Methylidynemethanaminium		881.1	870.2	± 3.0	kJ/mol	42.0594 ± 0.0016	64709-60-0*0
Fluoromethane cation		981.81	974.32	± 0.62	kJ/mol	34.03237 ± 0.00083	59122-96-2*0
Ammonium hydroxide			-366.18	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*852
Hydrogen iodide			-36.91	± 0.56	kJ/mol	127.912410 ± 0.000076	10034-85-2*805
Fluoromethane			-245.75	± 0.45	kJ/mol	34.03292 ± 0.00083	593-53-3*590
Hydroxyformyl anion		-319.54	-321.40	± 0.56	kJ/mol	45.0180 ± 0.0010	78944-70-4*0
Hydrogen iodide			-56.696	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*850
Hydrogen bromide			-120.51	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*840
Silicon carbide anion		509.8	514.5	± 4.4	kJ/mol	40.09675 ± 0.00085	86017-99-4*0
Hydrogen chloride			-166.102	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*830
(Methylimino)methyl		278.0	267.8	± 1.1	kJ/mol	42.0599 ± 0.0016	117928-23-1*0
Silicon carbide		-70.7	-71.7	± 1.5	kJ/mol	40.09620 ± 0.00085	409-21-2*500
Tetrafluorosilane cation		-137.3	-141.6	± 5.9	kJ/mol	104.07856 ± 0.00030	62859-94-3*0
Water		-238.617	-241.805	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*1
(Methylimino)methyl		297.1	287.1	± 2.0	kJ/mol	42.0599 ± 0.0016	117928-23-1*2
Fluorine atom		82.087	83.872	± 0.017	kJ/mol	18.99840320 ± 0.00000050	14762-94-8*2
(Methylimino)methanide		223.0	212.2	± 3.2	kJ/mol	42.0604 ± 0.0016	64709-60-00
Chloromethane		-106.55	-102.58	± 0.16	kJ/mol	50.4872 ± 0.0012	74-87-3*590
Bromomethane cation		996.22	981.31	± 0.17	kJ/mol	94.9380 ± 0.0013	12538-70-4*0
2-Methanidylidynehydrazin-2-ium-1-ide		518.5	516.2	± 1.6	kJ/mol	41.03267 ± 0.00082	947408-74-41
Nitric acid			-206.07	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*822
(Methylimino)methanide		236.6	225.7	± 3.6	kJ/mol	42.0604 ± 0.0016	64709-60-02
Silylene		271.42	269.75	± 0.86	kJ/mol	30.10138 ± 0.00033	13825-90-6*0
Formic acid cation		721.94	715.41	± 0.25	kJ/mol	46.0248 ± 0.0010	50614-05-6*0
Formic acid anion		-256.2	-262.3	± 1.8	kJ/mol	46.0259 ± 0.0010	19066-82-1*0
Hydrobromate ion		-5.8	-12.3	± 4.3	kJ/mol	80.9125 ± 0.0010	85532-97-4*0
Iodomethane cation		944.68	935.29	± 0.18	kJ/mol	141.93844 ± 0.00083	12538-72-6*0
Disilane cation		1030.3	1017.5	± 2.2	kJ/mol	62.21809 ± 0.00073	96301-43-8*0
Hydrogen bromide			-120.31	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*833
1-Aminoethenylium		900.0	889.1	± 3.0	kJ/mol	42.0594 ± 0.0016	139597-26-50
Acetic acid			-484.80	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*834
Fluoroform			-704.76	± 0.41	kJ/mol	70.01385 ± 0.00080	75-46-7*590
Dioxodiazoxane		93.0	88.2	± 1.3	kJ/mol	76.01168 ± 0.00091	122413-35-8*0
Hydrogen fluoride			-322.14	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*909
Hydrogen iodide			-56.583	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*898
Acetic acid			-484.81	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*835
Disilene		288.6	280.0	± 1.9	kJ/mol	60.20276 ± 0.00066	15435-77-5*0
Dichlorine cation		1108.307	1108.286	± 0.0062	kJ/mol	70.9049 ± 0.0018	12595-90-3*0
Nitric acid			-206.06	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*891
1-Aminoethenide		215.9	205.2	± 3.2	kJ/mol	42.0604 ± 0.0016	139597-26-5*0
Hydrogen bromide			-120.70	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*850
Silylsilylene		317.1	309.3	± 2.0	kJ/mol	60.20276 ± 0.00066	50420-90-1*0
Acetic acid			-484.81	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*837
Cycloprop-2-yliumyl		1225.37	1218.22	± 0.60	kJ/mol	40.0633 ± 0.0024	65812-78-4*0
Fluorosyl fluoride anion		-147.1	-146.8	± 3.0	kJ/mol	53.99675 ± 0.00030	86825-57-20
Hydrogen bromide			-120.10	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*830
Cyanic acid cation		1135.7	1133.2	± 2.9	kJ/mol	43.02423 ± 0.00086	59780-31-3*0
Acetic acid			-484.81	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*838
Formate			-425.48	± 0.45	kJ/mol	45.0180 ± 0.0010	71-47-6*800
Fluorine atom nonacation		262121.1	262122.9	± 1.8	kJ/mol	18.99346598 ± 0.00000050	35424-07-8*0
Di-mu-hydrodihydrodisilicon		374.5	364.3	± 2.4	kJ/mol	60.20276 ± 0.00066	129970-82-7*0
Di-mu-hydrodihydrodisilicon		374.5	364.1	± 2.4	kJ/mol	60.20276 ± 0.00066	129970-82-7*1
Di-mu-hydrodihydrodisilicon		544.1	536.0	± 3.7	kJ/mol	60.20276 ± 0.00066	129970-82-7*11
Di-mu-hydrodihydrodisilicon cation		1180.1	1172.5	± 3.3	kJ/mol	60.20221 ± 0.00066	129970-82-70
Di-mu-hydrodihydrodisilicon anion		288.3	280.2	± 3.4	kJ/mol	60.20331 ± 0.00066	129970-83-80
O--HH Complex		247.6	248.9	± 2.7	kJ/mol	18.01528 ± 0.00033	7732-18-5101
Bromoform			7.5	± 1.1	kJ/mol	252.7306 ± 0.0031	75-25-2*590
Cyanic acid anion		-9.2	-9.6	± 3.1	kJ/mol	43.02533 ± 0.00086	58199-47-6*0
Hydrogen chloride			-164.927	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*821
Chlorine pentafluoride cation		1005.9	996.9	± 3.2	kJ/mol	130.44417 ± 0.00090	478167-78-1*0
Hydrogen fluoride			-321.83	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*887
2-Methanidylidynehydrazin-2-ium-1-ide		531.6	530.2	± 2.3	kJ/mol	41.03267 ± 0.00082	947408-74-411
Difluoromethane			-468.96	± 0.36	kJ/mol	52.02339 ± 0.00081	75-10-5*590
Tetroxidane		-30.91	-41.37	± 0.64	kJ/mol	66.0135 ± 0.0012	29683-94-1*23
Hydrogen bromide			-116.24	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*815
Hydrogen bromide			-117.02	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*816
Acetic acid			-484.81	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*839
Hydrogen fluoride			-322.51	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*835
Oxoniumyl ion		978.746	975.595	± 0.024	kJ/mol	18.01473 ± 0.00033	56583-62-1*2
Hydrogen fluoride			-321.92	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*890
Chlorine chlorite		168.6	166.4	± 1.3	kJ/mol	102.9042 ± 0.0019	105206-44-8*0
2-Aminoethenyl		319.8	310.2	± 1.3	kJ/mol	42.0599 ± 0.0016	176964-54-8*0
Hydrogen bromide			-117.72	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*817
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*834
Formic acid			-424.94	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*924
Nitric acid			-206.07	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*828
Hydrogen chloride			-165.186	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*822
Hydrogen chloride			-166.793	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*844
Hydrogen iodide			-44.15	± 0.30	kJ/mol	127.912410 ± 0.000076	10034-85-2*807
Hydrogen bromide			-118.36	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*818
Difluorodioxidanium		1283.7	1280.1	± 2.3	kJ/mol	69.99506 ± 0.00060	7783-44-00
Hydrogen chloride			-166.542	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*838
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
Hydrogen bromide			-118.70	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*819
2-Aminoethenylium		1110.6	1099.8	± 2.4	kJ/mol	42.0594 ± 0.0016	64724-21-6*1
2-Aminoethenyl anion		230.2	219.4	± 2.6	kJ/mol	42.0604 ± 0.0016	64724-21-60
Formic acid			-425.16	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*923
Benzvalene cation		1200.2	1184.7	± 2.7	kJ/mol	78.1113 ± 0.0048	81050-63-7*0
Acetic acid			-484.83	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*841
Peroxychlorous acid		101.5	95.4	± 3.6	kJ/mol	84.4588 ± 0.0013	177778-92-6*3
Ethylimidogen anion		277.3	263.4	± 3.6	kJ/mol	43.0684 ± 0.0016	82539-33-1*0
1,3-Propanediyl		320.0	307.9	± 2.4	kJ/mol	42.0797 ± 0.0024	32458-33-6*12
Acetic acid			-484.70	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*844
Formic acid			-425.43	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*801
Nitric acid			-206.19	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*833
Ammonium hydroxide			-364.33	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*802
Ethylimidogen cation		1394.6	1381.3	± 3.6	kJ/mol	43.0673 ± 0.0016	82539-33-11
Oxoiodonium		1066.1	1064.1	± 1.9	kJ/mol	142.90332 ± 0.00030	81182-81-2*0
1-Aziridinylium		1265.6	1254.0	± 3.1	kJ/mol	42.0594 ± 0.0016	91127-35-4*1
Butadienylacetylene		358.7	346.3	± 1.9	kJ/mol	78.1118 ± 0.0048	10420-90-3*0
1-Aziridinide		244.0	231.6	± 3.3	kJ/mol	42.0604 ± 0.0016	1358579-49-3*0
(3Z)-1,3-Hexadien-5-yne	$C=C/C=C\C#C$	358.7	346.1	± 2.5	kJ/mol	78.1118 ± 0.0048	5222-76-4*0
Divinylacetylene		361.7	350.6	± 2.0	kJ/mol	78.1118 ± 0.0048	821-08-9*0
Water anion		-50.1	-53.0	± 4.3	kJ/mol	18.01583 ± 0.00033	12259-30-2*0
Divinylacetylene		362.3	351.2	± 2.6	kJ/mol	78.1118 ± 0.0048	821-08-9*1
Biallenyl		410.6	399.5	± 1.5	kJ/mol	78.1118 ± 0.0048	29776-96-3*0
Ammonium hydroxide			-364.92	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*804
Biallenyl		419.4	408.1	± 2.3	kJ/mol	78.1118 ± 0.0048	29776-96-3*2
Propargylallene		431.3	419.9	± 1.4	kJ/mol	78.1118 ± 0.0048	33142-15-3*0
Formic acid			-425.53	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*802
Propargylallene		432.2	420.6	± 2.2	kJ/mol	78.1118 ± 0.0048	33142-15-3*2
Formic acid			-425.50	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*803
Formic acid			-425.46	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*804
3-Methylene-1-penten-4-yne		362.5	350.1	± 2.2	kJ/mol	78.1118 ± 0.0048	6929-96-0*0
3-Methylene-1-penten-4-yne		374.6	362.3	± 2.8	kJ/mol	78.1118 ± 0.0048	6929-96-0*3
1,2,3,5-Hexatetraene		391.7	380.3	± 1.6	kJ/mol	78.1118 ± 0.0048	60239-33-0*0
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*835
1,2,3,5-Hexatetraene		400.4	388.9	± 2.3	kJ/mol	78.1118 ± 0.0048	60239-33-0*2
Hydrogen bromide			-120.20	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*831
1-Hydroxyethylidene		57.35	47.04	± 0.78	kJ/mol	44.0526 ± 0.0017	30967-49-8*2
Chlorous acid anion		-154.3	-156.1	± 3.3	kJ/mol	68.4600 ± 0.0011	99559-66-7*0
Hydrogen chloride			-165.977	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*829
Cyanoamidogen		322.63	320.14	± 0.63	kJ/mol	41.03212 ± 0.00082	12347-01-2*0
Acetic acid			-484.84	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*850
1-Hydroxyethylidene		57.35	47.04	± 0.78	kJ/mol	44.0526 ± 0.0017	30967-49-8*0
Hydrogen bromide			-120.78	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*861
Hydrogen fluoride			-322.58	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*837
Tetroxidane		-33.27	-43.21	± 0.44	kJ/mol	66.0135 ± 0.0012	29683-94-1*0
Formic acid			-425.43	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*805
1,2-Butadiene		137.78	138.83	± 0.63	kJ/mol	54.0904 ± 0.0032	590-19-2*500
Isofulminic acid cation		1377.0	1374.9	± 2.9	kJ/mol	43.02423 ± 0.00086	117800-60-9*0
1-Methylallyl		152.53	136.06	± 0.80	kJ/mol	55.0984 ± 0.0032	15819-46-2*0
Formic acid			-425.36	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*807
Oxide		651.	653.	± 15.	kJ/mol	16.00050 ± 0.00030	16833-27-5*0
1-Methyl-1-propenyl		239.95	224.56	± 0.67	kJ/mol	55.0984 ± 0.0032	71790-71-1*0
Formic acid			-425.30	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*809
1-Methyl-1-propenyl		243.3	226.9	± 1.9	kJ/mol	55.0984 ± 0.0032	71790-71-1*2
Hydrogen iodide			-47.73	± 0.32	kJ/mol	127.912410 ± 0.000076	10034-85-2*809
Acetic acid			-484.86	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*852
1-Butenyl		263.35	246.30	± 0.69	kJ/mol	55.0984 ± 0.0032	2669-61-6*0
Chlorine pentafluoride anion		-619.1	-622.6	± 4.3	kJ/mol	130.44526 ± 0.00090	184851-42-1*0
1-Butenyl		263.8	246.5	± 1.9	kJ/mol	55.0984 ± 0.0032	2669-61-6*3
2-Aziridinyl		360.8	349.3	± 1.7	kJ/mol	42.0599 ± 0.0016	23838-09-70
Nitric acid			-205.03	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*815
Ethylamine			-76.83	± 0.67	kJ/mol	45.0837 ± 0.0017	75-04-7*500
Hydrogen bromide			-118.93	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*820
Diazirinyl		491.00	487.61	± 0.96	kJ/mol	41.03212 ± 0.00082	69967-71-1*0
Ketene		-45.24	-48.42	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*22
Ammonium hydroxide			-365.29	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*806
2-Aziridinylium		1010.7	998.7	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-35-40
1-Aminoethyl anion		174.5	156.9	± 3.2	kJ/mol	44.0763 ± 0.0017	59263-55-7*0
2-Aziridinylium		1304.7	1293.0	± 4.1	kJ/mol	42.0594 ± 0.0016	91127-35-41
Formic acid			-425.26	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*811
Ethylaminylium		1092.4	1077.2	± 2.4	kJ/mol	44.0752 ± 0.0017	54387-08-5*1
Ethylaminylium		1094.8	1079.1	± 2.9	kJ/mol	44.0752 ± 0.0017	54387-08-5*12
Hydrogen iodide			-49.968	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*811
Trichlorine cation		1196.6	1197.2	± 3.2	kJ/mol	106.3576 ± 0.0027	33088-85-6*1
Hydrogen bromide			-119.25	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*821
2-Aziridinylium		1334.7	1323.7	± 4.8	kJ/mol	42.0594 ± 0.0016	91127-35-411
N-Methylethanamine			-74.9	± 2.3	kJ/mol	59.1103 ± 0.0025	624-78-2*500
Hydrogen fluoride			-322.17	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*831
Formic acid			-425.23	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*812
Formic acid			-425.21	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*813
2-Methyl-2-propanamine			-150.58	± 0.53	kJ/mol	73.1369 ± 0.0033	75-64-9*590
Acetic acid			-484.87	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*855
Formic acid			-425.20	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*814
Hydrogen bromide			-120.55	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*841
Naphthalene cation		956.80	933.73	± 0.57	kJ/mol	128.1700 ± 0.0080	34512-27-1*0
Naphthalene anion		187.5	164.6	± 3.0	kJ/mol	128.1711 ± 0.0080	34509-91-6*0
2-Aziridinide		316.0	303.9	± 3.5	kJ/mol	42.0604 ± 0.0016	111127-93-6*0
Formic acid			-425.20	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*815
Acetic acid			-484.88	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*861
2-Aziridinide		329.9	317.9	± 4.0	kJ/mol	42.0604 ± 0.0016	111127-93-6*1
Methylaminyliumyl		1422.9	1416.0	± 2.2	kJ/mol	29.04071 ± 0.00083	56924-51-7*2
Ammonium hydroxide			-365.54	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*808
Ammonium hydroxide			-365.62	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*809
Cyanoamidogen		652.3	650.2	± 1.2	kJ/mol	41.03212 ± 0.00082	12347-01-2*2
Formic acid			-425.19	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*816
Ammonium hydroxide			-365.75	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*811
Formic acid			-425.19	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*817
Formic acid			-425.19	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*818
Formic acid			-425.20	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*819
Ammonium hydroxide			-365.92	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*813
Diazene		207.12	199.98	± 0.41	kJ/mol	30.02936 ± 0.00020	3618-05-1*0
Propylidene anion		300.9	286.7	± 3.2	kJ/mol	42.0803 ± 0.0024	121408-55-70
Diazirenide		504.6	501.1	± 2.9	kJ/mol	41.03267 ± 0.00082	130614-84-5*1
Formylimidogen		245.2	242.1	± 4.6	kJ/mol	43.02478 ± 0.00086	42288-92-6*1
Propane		-110.18	-121.17	± 0.66	kJ/mol	44.0956 ± 0.0025	74-98-6*500
1,1-Ethenediol		-307.67	-320.21	± 0.83	kJ/mol	60.0520 ± 0.0017	10375-04-9*0
Hydrogen fluoride			-325.44	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*850
Butadiynylium		1781.2	1787.7	± 3.2	kJ/mol	49.0502 ± 0.0032	76108-67-3*0
2-Butynylium		1085.8	1077.6	± 1.3	kJ/mol	53.0820 ± 0.0032	64235-83-2*0
Hydrogen fluoride			-321.79	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*817
Formic acid			-425.21	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*820
Formic acid			-425.23	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*821
Hydrogen fluoride			-322.65	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*838
1,1-Ethenediol		-302.5	-315.8	± 1.9	kJ/mol	60.0520 ± 0.0017	10375-04-9*2
Helium		0.000	0.000	± 0.000	kJ/mol	4.0026020 ± 0.0000020	7440-59-7*2
Hydrogen iodide			-56.470	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*839
Formic acid			-425.25	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*822
Helium dication		7622.839	7622.839	± 0.000	kJ/mol	4.0015048 ± 0.0000020	12587-46-1*0
Diazanide		249.3	239.3	± 3.1	kJ/mol	31.03785 ± 0.00025	25415-88-7*0
1,1-Ethenediol		-296.1	-309.4	± 1.9	kJ/mol	60.0520 ± 0.0017	10375-04-9*3
(Dimethylamino)methyl anion		190.8	166.6	± 3.3	kJ/mol	58.1029 ± 0.0025	125231-49-4*0
Cyclopropylidene		474.94	466.92	± 0.85	kJ/mol	40.0639 ± 0.0024	2143-70-6*0
Chlorine atom dianion		406.6	408.2	± 4.8	kJ/mol	35.45380 ± 0.00090	33944-49-9*0
Dihelium		1761.349	1757.613	± 0.018	kJ/mol	8.0052040 ± 0.0000040	12184-98-4*2
Hydroxymethylene cation		971.9	968.3	± 1.4	kJ/mol	30.02543 ± 0.00087	135395-06-1*0
Hydrohelate		143.256	139.027	± 0.0021	kJ/mol	5.011091 ± 0.000070	12325-01-8*0
Cyanoaminylium		1363.1	1360.8	± 1.3	kJ/mol	41.03157 ± 0.00082	205443-18-1*0
Chlorine trifluoride anion		-480.4	-481.9	± 3.5	kJ/mol	92.44846 ± 0.00090	184289-50-7*0
Ammonium hydroxide			-366.25	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*820
Hydrogen bromide			-120.43	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*838
Hydrogen iodide			-56.361	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*833
Glycolaldehyde		-304.48	-317.52	± 0.89	kJ/mol	60.0520 ± 0.0017	141-46-8*0
Nitrilomethylimidogen		581.5	578.4	± 1.5	kJ/mol	41.03212 ± 0.00082	324529-58-0*0
Hydrogen fluoride			-321.97	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*891
Iminomethylimidogen anion		401.7	399.9	± 2.3	kJ/mol	41.03267 ± 0.00082	150296-30-3*0
Ethynylamidogen anion		233.7	230.5	± 3.2	kJ/mol	40.0446 ± 0.0016	64066-03-1*0
Diazene		207.12	199.98	± 0.41	kJ/mol	30.02936 ± 0.00020	3618-05-1*1
Hydrogen fluoride			-323.84	± 0.12	kJ/mol	20.006343 ± 0.000070	7664-39-3*842
Ammonium hydroxide			-366.36	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*840
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
Formic acid			-425.25	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*891
Hydroneonate		143.096	142.084	± 0.035	kJ/mol	21.18819 ± 0.00060	75514-98-6*0
Hydrogen iodide			-55.09	± 0.12	kJ/mol	127.912410 ± 0.000076	10034-85-2*818
Hydrogen chloride			-166.822	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*846
Formic acid			-425.28	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*825
Hydrogen iodide			-56.140	± 0.097	kJ/mol	127.912410 ± 0.000076	10034-85-2*829
Krypton dication		3701.124	3701.124	± 0.013	kJ/mol	83.7989 ± 0.1000	18469-91-5*0
Hydrogen iodide			-55.809	± 0.095	kJ/mol	127.912410 ± 0.000076	10034-85-2*822
Xenon dication		3194.14	3194.14	± 0.36	kJ/mol	131.2889 ± 0.0200	14066-95-6*0
Formic acid			-425.30	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*892
Hydroperoxyimidogen		111.9	109.0	± 2.8	kJ/mol	47.01348 ± 0.00061	877456-58-1*2
Cyanogen		273.94	289.19	± 0.42	kJ/mol	52.0349 ± 0.0016	460-19-5*500
Hydrogen chloride			-165.293	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*891
1-Methylene-2-propenylium		1059.4	1049.3	± 1.7	kJ/mol	53.0820 ± 0.0032	62698-26-4*0
1,2-Difluoroethene		-302.84	-308.93	± 0.89	kJ/mol	64.0341 ± 0.0016	1691-13-0*0
Ethynylaminylium		1277.8	1277.4	± 2.6	kJ/mol	40.0435 ± 0.0016	103835-08-1*0
Methoxymethylene		129.13	118.62	± 0.78	kJ/mol	44.0526 ± 0.0017	19527-10-7*2
Cyanoamidogen anion		391.6	389.8	± 1.8	kJ/mol	41.03267 ± 0.00082	67131-47-9*1
Sulfur atom hexacation		26947.2	26949.0	± 3.4	kJ/mol	32.0627 ± 0.0060	22537-26-4*0
Formic acid			-425.33	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*830
Sulfur atom dianion		454.1	455.9	± 3.2	kJ/mol	32.0671 ± 0.0060	18496-25-8*0
Hydrogen iodide			-51.307	± 0.099	kJ/mol	127.912410 ± 0.000076	10034-85-2*812
Disulfur cation		1030.21	1030.80	± 0.33	kJ/mol	64.1315 ± 0.0120	12597-02-3*0
Disulfur anion		-34.0	-33.1	± 1.2	kJ/mol	64.1325 ± 0.0120	12185-15-8*0
Cyanoamidogen anion		392.3	390.3	± 6.2	kJ/mol	41.03267 ± 0.00082	67131-47-9*11
Ethane anion		41.8	26.6	± 4.4	kJ/mol	30.0696 ± 0.0017	54064-82-3*0
Sulfonyl cation		897.07	894.80	± 0.13	kJ/mol	64.0643 ± 0.0060	12439-77-9*0
Sulfur dioxide		-331.4	-320.1	± 1.9	kJ/mol	64.0648 ± 0.0060	7446-09-5*500
Difluorovinylidene anion		-88.2	-87.1	± 2.3	kJ/mol	62.0188 ± 0.0016	107693-92-5*0
Methoxymethylene		129.13	118.62	± 0.78	kJ/mol	44.0526 ± 0.0017	19527-10-7*0
Isocyanogen anion		386.6	388.7	± 3.3	kJ/mol	52.0354 ± 0.0016	83951-85-30
Dibromovinylidene		510.0	498.9	± 4.1	kJ/mol	183.8294 ± 0.0026	261771-36-2*0
Oxosulfate		-102.60	-101.83	± 0.50	kJ/mol	48.0659 ± 0.0060	12269-52-2*0
Trioxidaniumyl		925.6	916.7	± 1.5	kJ/mol	50.01353 ± 0.00091	161321-37-5*0
Sulfur trioxide cation		847.66	844.76	± 0.68	kJ/mol	80.0637 ± 0.0061	12710-95-1*0
Hydroxymethylene anion		147.1	144.2	± 1.6	kJ/mol	30.02653 ± 0.00087	207914-87-2*0
Sulfite		-275.1	-280.7	± 4.4	kJ/mol	80.0653 ± 0.0061	14265-45-3*0
Propene		7.69	3.98	± 0.82	kJ/mol	42.0797 ± 0.0024	115-07-1*500
Fluorovinylidene		298.9	300.1	± 3.1	kJ/mol	44.0277 ± 0.0016	70302-00-0*0
Sulfur oxide peroxide		-26.0	-30.2	± 2.3	kJ/mol	80.0642 ± 0.0061	175799-68-5*0
Formic acid			-425.34	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*831
Sulfur oxide peroxide		-3.4	-7.0	± 3.0	kJ/mol	80.0642 ± 0.0061	175799-68-5*1
Formic acid			-425.38	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*852
Formic acid			-425.40	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*855
Sulfuryl dichloride cation		814.2	809.8	± 3.2	kJ/mol	134.9697 ± 0.0063	7791-25-50
Dichlorodioxosulfate		-604.8	-607.3	± 3.5	kJ/mol	134.9707 ± 0.0063	12599-04-1*0
Nitric acid			-206.19	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*895
Disulfur oxide cation		970.65	969.37	± 0.61	kJ/mol	80.1309 ± 0.0120	135758-60-0*0
Oxothioxosulfate		-231.83	-233.44	± 0.87	kJ/mol	80.1319 ± 0.0120	12143-07-6*0
2-Propenylidene		417.5	410.5	± 1.5	kJ/mol	40.0639 ± 0.0024	19527-08-3*1
Nitric acid			-206.44	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*850
Sulfoniumyl		992.71	989.80	± 0.19	kJ/mol	34.0813 ± 0.0060	26453-60-1*0
Dihydrogen sulfide ion		108.3	107.0	± 3.2	kJ/mol	34.0824 ± 0.0060	12311-21-6*0
Ammonium hydroxide			-366.06	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*816
Bromovinylidene		466.1	460.1	± 3.8	kJ/mol	104.9333 ± 0.0019	161957-27-3*0
Diisocyanogen anion		456.8	462.5	± 3.6	kJ/mol	52.0354 ± 0.0016	78800-22-30
Hydrogen iodide			-52.23	± 0.12	kJ/mol	127.912410 ± 0.000076	10034-85-2*813
Sulfuric acid cation		401.3	388.3	± 3.3	kJ/mol	98.0789 ± 0.0061	247933-66-0*0
Diisocyanogen cation		1825.3	1828.5	± 3.2	kJ/mol	52.0343 ± 0.0016	78800-21-20
Hydrogen peroxide			-190.70	± 0.30	kJ/mol	34.01468 ± 0.00062	7722-84-1*800
Dicarbon monoxide		377.12	381.16	± 0.83	kJ/mol	40.0208 ± 0.0016	12071-23-7*0
Difluorophosgene anion		-602.3	-604.2	± 3.2	kJ/mol	66.00745 ± 0.00085	474815-26-4*0
Sulfate			-909.09	± 0.14	kJ/mol	96.0647 ± 0.0061	14808-79-8*800
Diazene cation		1132.48	1125.83	± 0.64	kJ/mol	30.02881 ± 0.00020	76986-17-9*0
Formic acid			-425.34	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*832
Sulfuric acid			-880.35	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*815
Sulfuric acid			-881.96	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*816
Sulfuric acid			-883.45	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*817
Sulfuric acid			-884.74	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*818
Sulfuric acid			-885.41	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*819
Sulfuric acid			-885.81	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*820
Hydrogen chloride			-166.680	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*841
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*833
1,2-Butadienylium		1099.2	1089.8	± 1.2	kJ/mol	53.0820 ± 0.0032	65114-67-20
Sulfuric acid			-888.01	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*829
Sulfuric acid			-888.45	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*830
Sulfuric acid			-889.20	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*831
Sulfuric acid			-889.80	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*832
Sulfuric acid			-890.32	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*833
Sulfuric acid			-890.81	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*834
Cyanic fluoride cation		1294.2	1294.7	± 1.1	kJ/mol	45.01529 ± 0.00080	62532-69-8*0
Fluoro(fluorooxy)methylene		-134.8	-136.0	± 1.4	kJ/mol	66.00691 ± 0.00085	479587-30-9*0
Sulfuric acid			-891.87	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*838
Bromine atom		161.995	155.933	± 0.056	kJ/mol	79.90400 ± 0.00100	10097-32-2*2
2-Propenylidene		417.5	410.5	± 1.5	kJ/mol	40.0639 ± 0.0024	19527-08-3*0
2-Propenylidene		419.1	411.5	± 2.3	kJ/mol	40.0639 ± 0.0024	19527-08-3*12
Sulfuric acid			-896.94	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*843
Cyanic fluoride anion		-20.7	-18.7	± 2.9	kJ/mol	45.01639 ± 0.00080	34507-50-1*0
Hydrogen iodide			-56.499	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*954
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*895
Sulfuric acid			-903.15	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*852
Sulfuric acid			-905.85	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*855
Sulfuric acid			-907.14	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*861
Hydrogen fluoride			-321.87	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*819
Chlorine atom		130.176	131.783	± 0.0011	kJ/mol	35.45270 ± 0.00090	22537-15-1*2
Hydrogen iodide			-56.382	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*895
Phosgene cation		897.0	896.0	± 1.7	kJ/mol	98.9150 ± 0.0020	73249-38-4*0
Phosgene			-242.79	± 0.24	kJ/mol	98.9155 ± 0.0020	75-44-5*501
Phosgene		-255.49	-242.79	± 0.24	kJ/mol	98.9155 ± 0.0020	75-44-5*502
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*834
Trioxygen difluoride		113.6	107.8	± 2.0	kJ/mol	85.99501 ± 0.00090	16829-28-0*2
Chloro(chlorooxy)methylene		73.5	73.9	± 3.6	kJ/mol	98.9155 ± 0.0020	479587-31-0*0
Chloro(chlorooxy)methylene		98.	105.	± 15.	kJ/mol	98.9155 ± 0.0020	479587-31-0*1
Fluorosyl fluoride		192.8	193.3	± 2.3	kJ/mol	53.99621 ± 0.00030	86825-57-2*0
1H-Diazirin-3-ylium		1527.1	1523.6	± 2.0	kJ/mol	41.03157 ± 0.00082	735234-64-7*0
Diazene cation		1132.48	1125.55	± 0.64	kJ/mol	30.02881 ± 0.00020	76986-17-9*1
Peroxyhypochlorous acid cation		1030.4	1024.6	± 2.5	kJ/mol	68.4589 ± 0.0011	67952-07-20
Chlorohydroxymethylene		14.4	11.5	± 3.2	kJ/mol	64.4707 ± 0.0012	147723-60-2*2
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*835
Diazoethenylidene cation		1771.1	1773.1	± 3.5	kJ/mol	52.0343 ± 0.0016	130760-10-00
Diazoethenylidene anion		529.6	532.2	± 3.5	kJ/mol	52.0354 ± 0.0016	130760-11-10
Sulfur hydroxide oxide		-474.0	-483.0	± 1.7	kJ/mol	97.0715 ± 0.0061	12337-07-4*0
Sulfur hydroxide oxide		-473.2	-482.5	± 2.5	kJ/mol	97.0715 ± 0.0061	12337-07-4*2
Sulfur hydroxide oxide cation		659.0	648.8	± 3.5	kJ/mol	97.0710 ± 0.0061	12337-07-40
Sulfur hydroxide oxide cation		663.6	652.6	± 4.0	kJ/mol	97.0710 ± 0.0061	12337-07-41
3H-diazirin-3-ylidene-methylene		837.3	839.9	± 2.4	kJ/mol	52.0349 ± 0.0016	204253-88-3*0
Hydrogen iodide			-52.90	± 0.16	kJ/mol	127.912410 ± 0.000076	10034-85-2*814
Sulfurous acid		-506.9	-517.6	± 1.3	kJ/mol	82.0801 ± 0.0061	7782-99-2*1
Sulfurous acid		-497.3	-507.4	± 1.4	kJ/mol	82.0801 ± 0.0061	7782-99-2*3
Chlorohydroxymethylene		14.0	11.3	± 2.5	kJ/mol	64.4707 ± 0.0012	147723-60-2*0
Hydrogen fluoride			-325.00	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*847
COC vdW		589.7	598.5	± 1.5	kJ/mol	40.0208 ± 0.0016	12071-24-80
Sulfite			-635.3	± 4.0	kJ/mol	80.0653 ± 0.0061	14265-45-3*800
Sulfurous acid			-612.22	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*828
Sulfurous acid			-612.94	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*829
Sulfurous acid			-613.48	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*830
Sulfurous acid			-613.91	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*908
Sulfurous acid			-614.28	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*831
Sulfurous acid			-614.88	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*832
Sulfurous acid			-615.39	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*833
Sulfurous acid			-616.33	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*836
Sulfurous acid			-617.02	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*839
Sulfurous acid			-618.11	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*840
Sulfurous acid			-618.86	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*841
Sulfurous acid			-619.91	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*842
Sulfurous acid			-620.32	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*899
Sulfurous acid			-620.65	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*843
Sulfurous acid			-621.24	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*844
Sulfurous acid			-622.21	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*847
Sulfurous acid			-622.80	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*850
Sulfonic acid		-482.1	-494.7	± 1.4	kJ/mol	82.0801 ± 0.0061	7782-99-20
Hydrogen iodide			-53.38	± 0.17	kJ/mol	127.912410 ± 0.000076	10034-85-2*815
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*837
Hydrogen bromide			-120.63	± 0.14	kJ/mol	80.9119 ± 0.0010	10035-10-6*843
(Chlorooxy)methylene		155.5	155.3	± 3.7	kJ/mol	64.4707 ± 0.0012	331419-80-8*1
1,3-Butadienyl		372.21	362.98	± 0.87	kJ/mol	53.0825 ± 0.0032	86181-68-2*0
Platinum atom cation		1427.8	1428.3	± 1.7	kJ/mol	195.0775 ± 0.0020	20561-56-2*0
Platinum atom anion		358.4	358.9	± 1.7	kJ/mol	195.0785 ± 0.0020	40817-31-0*0
Ammonium hydroxide			-366.34	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*842
Platinum dimer cation		1661.0	1659.7	± 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			-366.24	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*819
Platinum hydride cation		1336.	1355.	± 22.	kJ/mol	196.0854 ± 0.0020	87882-39-1*0
Ethenol		-113.38	-123.72	± 0.38	kJ/mol	44.0526 ± 0.0017	557-75-5*0
Hydrogen atom		-37.0	-40.2	± 1.1	kJ/mol	1.007940 ± 0.000070	12385-13-6*1001000
Formic acid			-425.36	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*838
1,3-Butadienyl		374.8	364.4	± 2.0	kJ/mol	53.0825 ± 0.0032	86181-68-2*12
Vinyl alcohol cation		778.6	767.6	± 1.2	kJ/mol	44.0520 ± 0.0017	57239-63-1*0
1,3-Butadienyl		384.0	374.4	± 2.0	kJ/mol	53.0825 ± 0.0032	86181-68-2*21
Hydrogen atom		-32.	-34.	± 20.	kJ/mol	1.007940 ± 0.000070	12385-13-6*1002000
Hydrogen fluoride			-322.72	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*839
Formic acid			-425.36	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*839
Formic acid			-425.36	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*841
(Chlorooxy)methylene		119.2	117.9	± 2.7	kJ/mol	64.4707 ± 0.0012	331419-80-8*0
Formic acid			-425.37	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*844
Formic acid			-425.38	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*850
Argon cation		1520.571	1520.580	± 0.000	kJ/mol	39.94745 ± 0.00100	14791-69-6*0
Argon dimer cation		1393.760	1391.172	± 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
Helium anion		1868.42	1868.42	± 0.19	kJ/mol	4.0031506 ± 0.0000020	14452-58-5*2
Dichlorine			-21.9	± 1.6	kJ/mol	70.9054 ± 0.0018	7782-50-5*800
Dichlorine		-30.21	-18.49	± 0.51	kJ/mol	70.9054 ± 0.0018	7782-50-5*500
Argon anion		1111.116	1111.116	± 0.099	kJ/mol	39.94855 ± 0.00100	16544-90-4*2
Krypton anion		110.	110.	± 350.	kJ/mol	83.8005 ± 0.1000	20205-93-0*0
Radon cation		1037.07	1037.07	± 0.61	kJ/mol	221.9995 ± 0.1000	22541-65-7*0
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. 1.130 of the Thermochemical Network. Argonne National Laboratory, Lemont, Illinois 2023; available at ATcT.anl.gov [DOI: 10.17038/CSE/1997229]
4		N. Genossar, P. B. Changala, B. Gans, J.-C. Loison, S. Hartweg, M.-A. Martin-Drumel, G. A. Garcia, J. F. Stanton, B. Ruscic, and J. H. Baraban Ring-Opening Dynamics of the Cyclopropyl Radical and Cation: the Transition State Nature of the Cyclopropyl Cation J. Am. Chem. Soc. 144, 18518-18525 (2022) [DOI: 10.1021/jacs.2c07740]
5		B. Ruscic and D. H. Bross Active Thermochemical Tables: The Thermophysical and Thermochemical Properties of Methyl, CH3, and Methylene, CH2, Corrected for Nonrigid Rotor and Anharmonic Oscillator Effects. Mol. Phys. e1969046 (2021) [DOI: 10.1080/00268976.2021.1969046]
6		J. H. Thorpe, J. L. Kilburn, D. Feller, P. B. Changala, D. H. Bross, B. Ruscic, and J. F. Stanton, Elaborated Thermochemical Treatment of HF, CO, N2, and H2O: Insight into HEAT and Its Extensions J. Chem. Phys. 155, 184109 (2021) [DOI: 10.1063/5.0069322]
7		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]
8		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 [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.