ATcT [1, 2] enthalpies of formation based on version 1.148 of the Thermochemical Network [3]

Below is a list of 0 K and 298.15 K enthalpies of formation for all 3129 species included in version 1.148 (as of 09/01/2024).
This version of ATcT results[3] was generated by additional expansion of version 1.140 to include species relevant to a recent study of the role of atmospheric methanediol[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		711.404	716.889	± 0.040	kJ/mol	12.01070 ± 0.00080	7440-44-0*0
Oxygen atom		246.844	249.229	± 0.0021	kJ/mol	15.99940 ± 0.00030	17778-80-2*0
Methane		-66.544	-74.513	± 0.044	kJ/mol	16.04246 ± 0.00085	74-82-8*0
Water		-286.274	-285.802	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*500
Nitrogen atom		470.583	472.445	± 0.022	kJ/mol	14.006740 ± 0.000070	17778-88-0*0
Carbon dioxide		-393.111	-393.477	± 0.015	kJ/mol	44.00950 ± 0.00100	124-38-9*0
Hydron		1528.084	1530.047	± 0.000	kJ/mol	1.007391 ± 0.000070	12408-02-5*0
Water		-238.905	-241.808	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*0
Ethane		-68.38	-84.00	± 0.12	kJ/mol	30.0690 ± 0.0017	74-84-0*0
Chlorine atom		119.621	121.302	± 0.0011	kJ/mol	35.45270 ± 0.00090	22537-15-1*0
Fluorine atom		77.254	79.360	± 0.017	kJ/mol	18.99840320 ± 0.00000050	14762-94-8*0
Ethylene		60.90	52.39	± 0.11	kJ/mol	28.0532 ± 0.0016	74-85-1*0
Propane		-82.68	-104.96	± 0.15	kJ/mol	44.0956 ± 0.0025	74-98-6*0
Methyl		149.879	146.479	± 0.050	kJ/mol	15.03452 ± 0.00083	2229-07-4*0
Methanol		-189.91	-200.80	± 0.14	kJ/mol	32.04186 ± 0.00090	67-56-1*0
Ammonia		-38.564	-45.557	± 0.029	kJ/mol	17.03056 ± 0.00022	7664-41-7*0
Bromine atom		117.925	111.862	± 0.055	kJ/mol	79.90400 ± 0.00100	10097-32-2*0
Hydroxyl		37.276	37.516	± 0.022	kJ/mol	17.00734 ± 0.00031	3352-57-6*0
Formaldehyde		-105.380	-109.221	± 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		-113.799	-110.519	± 0.026	kJ/mol	28.01010 ± 0.00085	630-08-0*0
Ethanol		-217.20	-234.91	± 0.20	kJ/mol	46.0684 ± 0.0017	64-17-5*0
Hydrogen chloride		-91.988	-92.172	± 0.0062	kJ/mol	36.46064 ± 0.00090	7647-01-0*0
Benzene		100.72	83.21	± 0.21	kJ/mol	78.1118 ± 0.0048	71-43-2*0
Hydrogen fluoride		-272.679	-272.726	± 0.018	kJ/mol	20.006343 ± 0.000070	7664-39-3*0
Ethyl		131.51	120.76	± 0.20	kJ/mol	29.0611 ± 0.0016	2025-56-1*0
Propene		34.90	20.07	± 0.18	kJ/mol	42.0797 ± 0.0024	115-07-1*0
Hydrogen cyanide		129.685	129.301	± 0.087	kJ/mol	27.02538 ± 0.00081	74-90-8*0
Iodine		107.157	106.757	± 0.0021	kJ/mol	126.904470 ± 0.000030	14362-44-8*0
Hydrogen bromide		-27.51	-35.36	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*0
Nitric oxide		90.636	91.140	± 0.065	kJ/mol	30.00614 ± 0.00031	10102-43-9*0
Acetaldehyde		-154.89	-165.42	± 0.22	kJ/mol	44.0526 ± 0.0017	75-07-0*0
Propyne		192.68	185.53	± 0.21	kJ/mol	40.0639 ± 0.0024	74-99-7*0
Chloromethane		-74.71	-82.64	± 0.18	kJ/mol	50.4872 ± 0.0012	74-87-3*0
Dioxidanyl		15.06	12.16	± 0.14	kJ/mol	33.00674 ± 0.00060	3170-83-0*0
Acetone		-199.95	-216.90	± 0.26	kJ/mol	58.0791 ± 0.0025	67-64-1*0
Silicon		450.32	454.66	± 0.56	kJ/mol	28.08550 ± 0.00030	7440-21-3*0
Hydroxyde		-139.066	-139.032	± 0.022	kJ/mol	17.00789 ± 0.00031	14280-30-9*0
Methylamine		-6.44	-21.14	± 0.22	kJ/mol	31.05714 ± 0.00088	74-89-5*0
Nitrogen dioxide		36.875	34.068	± 0.065	kJ/mol	46.00554 ± 0.00060	10102-44-0*0
Allene		197.43	189.97	± 0.22	kJ/mol	40.0639 ± 0.0024	463-49-0*0
Hydrogen peroxide		-129.422	-135.408	± 0.058	kJ/mol	34.01468 ± 0.00062	7722-84-1*0
Vinyl		301.27	297.24	± 0.27	kJ/mol	27.0452 ± 0.0016	2669-89-8*0
Fluoromethane		-227.42	-235.44	± 0.23	kJ/mol	34.03292 ± 0.00083	593-53-3*0
Hydrogen iodide		28.644	26.468	± 0.036	kJ/mol	127.912410 ± 0.000076	10034-85-2*0
Methylene		391.079	391.625	± 0.094	kJ/mol	14.02658 ± 0.00081	2465-56-7*1
Silane		42.66	33.04	± 0.63	kJ/mol	32.11726 ± 0.00041	7803-62-5*0
n-Butane		-98.32	-125.63	± 0.22	kJ/mol	58.1222 ± 0.0033	106-97-8*0
Toluene		73.36	50.07	± 0.31	kJ/mol	92.1384 ± 0.0056	108-88-3*0
Ozone		144.406	141.744	± 0.039	kJ/mol	47.99820 ± 0.00090	10028-15-6*0
Methylene		428.74	429.15	± 0.11	kJ/mol	14.02658 ± 0.00081	2465-56-7*2
Fluoride		-250.911	-249.126	± 0.017	kJ/mol	18.99895178 ± 0.00000050	16984-48-8*0
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*839
1,3-Butadiene		125.55	111.08	± 0.30	kJ/mol	54.0904 ± 0.0032	106-99-0*0
Nitrilomethyl		436.74	440.03	± 0.14	kJ/mol	26.01744 ± 0.00080	2074-87-5*0
Methoxy		29.07	21.69	± 0.26	kJ/mol	31.03392 ± 0.00088	2143-68-2*0
Ketene		-45.33	-48.39	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*0
Hydrogen chloride			-165.755	± 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		-20.52	-35.92	± 0.20	kJ/mol	94.9385 ± 0.0013	74-83-9*0
Hydroxymethyl		-10.08	-16.38	± 0.28	kJ/mol	31.03392 ± 0.00088	2597-43-5*0
Hydrogen iodide			-56.642	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*844
Formic acid		-371.03	-378.35	± 0.21	kJ/mol	46.0254 ± 0.0010	64-18-6*1
Methoxide		-122.32	-130.05	± 0.26	kJ/mol	31.03447 ± 0.00088	3315-60-4*0
iso-Butane		-105.90	-134.50	± 0.27	kJ/mol	58.1222 ± 0.0033	75-28-5*0
Acetic acid			-484.66	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*828
Hydrogen bromide			-120.26	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*842
Formic acid			-425.29	± 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
Hypochlorous acid		-73.842	-76.781	± 0.024	kJ/mol	52.46004 ± 0.00095	7790-92-3*0
Formyl		41.390	41.764	± 0.095	kJ/mol	29.01804 ± 0.00086	2597-44-6*0
Amidogen		188.92	186.03	± 0.11	kJ/mol	16.02262 ± 0.00016	13770-40-6*0
Acetic acid		-418.51	-432.68	± 0.36	kJ/mol	60.0520 ± 0.0017	64-19-7*1
Phenyl		352.16	338.80	± 0.63	kJ/mol	77.1039 ± 0.0048	2396-01-2*0
n-Propyl		118.47	101.06	± 0.39	kJ/mol	43.0877 ± 0.0024	2143-61-5*0
Tetrafluoromethane		-927.65	-933.62	± 0.23	kJ/mol	88.00431 ± 0.00080	75-73-0*0
Sulfur dioxide		-294.20	-296.74	± 0.13	kJ/mol	64.0648 ± 0.0060	7446-09-5*0
Dibromine		45.70	30.90	± 0.11	kJ/mol	159.8080 ± 0.0020	7726-95-6*0
Diiodine		65.497	62.417	± 0.0041	kJ/mol	253.808940 ± 0.000060	7553-56-2*0
Ethynyl		563.77	567.88	± 0.15	kJ/mol	25.0293 ± 0.0016	2122-48-7*0
Propargyl		354.06	351.47	± 0.32	kJ/mol	39.0559 ± 0.0024	2932-78-7*0
Cyclopropane		71.07	53.95	± 0.32	kJ/mol	42.0797 ± 0.0024	75-19-4*0
Allyl		179.91	168.19	± 0.33	kJ/mol	41.0718 ± 0.0024	1981-80-2*0
Chloroethane		-96.94	-111.53	± 0.25	kJ/mol	64.5138 ± 0.0019	75-00-3*0
Chloride		-228.953	-227.346	± 0.0021	kJ/mol	35.45325 ± 0.00090	16887-00-6*0
Methanimine		96.40	88.49	± 0.34	kJ/mol	29.04126 ± 0.00083	2053-29-4*0
Ethylium		915.18	903.11	± 0.29	kJ/mol	29.0606 ± 0.0016	14936-94-8*0
Ethylamine		-28.03	-49.80	± 0.45	kJ/mol	45.0837 ± 0.0017	75-04-7*0
Fluoroform		-689.28	-696.23	± 0.38	kJ/mol	70.01385 ± 0.00080	75-46-7*0
Oxomethylium		827.766	827.181	± 0.095	kJ/mol	29.01749 ± 0.00086	17030-74-9*0
iso-Propyl		105.65	88.78	± 0.39	kJ/mol	43.0877 ± 0.0024	2025-55-0*0
Ethenol		-113.31	-124.44	± 0.38	kJ/mol	44.0526 ± 0.0017	557-75-5*1
Acetyl		-3.63	-10.20	± 0.29	kJ/mol	43.0446 ± 0.0016	3170-69-2*0
Trifluoromethyl		-464.84	-467.64	± 0.43	kJ/mol	69.00591 ± 0.00080	2264-21-3*0
Methylidyne		592.994	596.328	± 0.081	kJ/mol	13.01864 ± 0.00080	3315-37-5*0
Methyl hydroperoxide		-114.85	-127.67	± 0.43	kJ/mol	48.0413 ± 0.0010	3031-73-0*0
Phenol		-74.39	-92.99	± 0.63	kJ/mol	94.1112 ± 0.0048	108-95-2*0
Tetrachloromethane		-89.36	-91.53	± 0.42	kJ/mol	153.8215 ± 0.0037	56-23-5*0
Benzaldehyde		-19.16	-36.96	± 0.68	kJ/mol	106.1219 ± 0.0056	100-52-7*0
Formamide		-178.63	-188.99	± 0.34	kJ/mol	45.04066 ± 0.00088	75-12-7*0
Bromide		-206.612	-212.674	± 0.055	kJ/mol	79.90455 ± 0.00100	24959-67-9*0
Hypobromous acid		-51.27	-61.74	± 0.48	kJ/mol	96.9113 ± 0.0010	13517-11-8*0
Oxonium		605.89	599.14	± 0.17	kJ/mol	19.02267 ± 0.00037	13968-08-6*0
Methylperoxy		22.53	13.08	± 0.34	kJ/mol	47.0333 ± 0.0010	2143-58-0*0
Methoxymethane		-166.38	-183.89	± 0.36	kJ/mol	46.0684 ± 0.0017	115-10-6*0
Cyanoacetylene		372.21	373.95	± 0.58	kJ/mol	51.0468 ± 0.0024	1070-71-9*0
Chlorooxidanyl		101.124	101.716	± 0.035	kJ/mol	51.45210 ± 0.00095	14989-30-1*0
Iodide		-187.995	-188.396	± 0.0021	kJ/mol	126.905019 ± 0.000030	20461-54-5*0
Dioxymethyl	$[O-]\[O+]=C$	111.66	104.65	± 0.56	kJ/mol	46.0254 ± 0.0010	56077-92-0*0
Nitric acid		-124.45	-134.16	± 0.17	kJ/mol	63.01288 ± 0.00091	7697-37-2*0
Cyclopentadiene		151.82	134.70	± 0.55	kJ/mol	66.1011 ± 0.0040	542-92-7*0
Hydroxyformyl		-181.15	-184.12	± 0.40	kJ/mol	45.0174 ± 0.0010	2564-86-5*1
Vinyl chloride		29.39	21.80	± 0.27	kJ/mol	62.4979 ± 0.0018	75-01-4*0
Imidogen		358.75	358.79	± 0.16	kJ/mol	15.014680 ± 0.000099	13774-92-0*0
1-Hydroxyethyl		-42.72	-56.15	± 0.46	kJ/mol	45.0605 ± 0.0017	2348-46-1*1
Vinylacetylene		296.26	289.50	± 0.56	kJ/mol	52.0746 ± 0.0032	689-97-4*0
Ethoxide		-163.76	-178.70	± 0.44	kJ/mol	45.0610 ± 0.0017	16331-64-9*0
1,3-Butadiyne		458.35	460.08	± 0.50	kJ/mol	50.0587 ± 0.0032	460-12-8*0
Sulfur trioxide		-389.80	-395.54	± 0.24	kJ/mol	80.0642 ± 0.0061	7446-11-9*0
Isocyanic acid		-115.92	-118.92	± 0.28	kJ/mol	43.02478 ± 0.00086	75-13-8*0
Cyanamide		141.61	135.60	± 0.78	kJ/mol	42.04006 ± 0.00082	420-04-2*0
Difluorophosgene		-603.34	-606.44	± 0.40	kJ/mol	66.00691 ± 0.00085	353-50-4*0
Methylium		1099.352	1095.408	± 0.045	kJ/mol	15.03397 ± 0.00083	14531-53-4*0
Hypofluorous acid		-84.37	-87.27	± 0.19	kJ/mol	36.00574 ± 0.00031	14034-79-8*0
Oxygen atom anion		105.868	108.096	± 0.0021	kJ/mol	15.99995 ± 0.00030	14337-01-0*0
Nitric acid			-206.22	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*839
Iodomethane		24.41	14.88	± 0.18	kJ/mol	141.93899 ± 0.00083	74-88-4*0
Isobutene		4.28	-16.78	± 0.32	kJ/mol	56.1063 ± 0.0032	115-11-7*0
2-Hydroxyethyl		-12.90	-26.16	± 0.48	kJ/mol	45.0605 ± 0.0017	4422-54-2*1
N-Methylenemethanamine		94.58	79.67	± 0.67	kJ/mol	43.0678 ± 0.0016	1761-67-7*0
Dichloromethane		-86.89	-93.75	± 0.34	kJ/mol	84.9320 ± 0.0020	75-09-2*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
Ethynide		277.32	280.73	± 0.19	kJ/mol	25.0299 ± 0.0016	29075-95-4*0
Isocyanomethane		183.86	177.31	± 0.46	kJ/mol	41.0520 ± 0.0016	593-75-9*0
1,2-Butadiene		176.03	162.53	± 0.42	kJ/mol	54.0904 ± 0.0032	590-19-2*0
Dimethylamine		4.65	-16.99	± 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
Hydrogen sulfide		-17.37	-20.29	± 0.18	kJ/mol	34.0819 ± 0.0060	7783-06-4*0
Hydride		143.264	145.228	± 0.000	kJ/mol	1.008489 ± 0.000070	12184-88-2*0
Oxirane		-39.87	-52.40	± 0.36	kJ/mol	44.0526 ± 0.0017	75-21-8*0
Cyanogen chloride		135.15	135.84	± 0.43	kJ/mol	61.4701 ± 0.0012	506-77-4*0
Phenide		244.29	230.87	± 0.38	kJ/mol	77.1044 ± 0.0048	30922-78-2*0
Cyclopropene		292.48	283.75	± 0.42	kJ/mol	40.0639 ± 0.0024	2781-85-3*0
Methyl formate		-346.92	-359.96	± 0.64	kJ/mol	60.0520 ± 0.0017	107-31-3*1
Trihydrogen cation		1110.304	1106.696	± 0.013	kJ/mol	3.02327 ± 0.00021	28132-48-1*0
Fluoromethylidyne		243.19	246.79	± 0.11	kJ/mol	31.00910 ± 0.00080	3889-75-6*0
Acrolein		-55.14	-65.54	± 0.64	kJ/mol	56.0633 ± 0.0024	107-02-8*1
Sulfur		276.83	279.08	± 0.14	kJ/mol	32.0660 ± 0.0060	7704-34-9*0
Sulfuric acid			-887.52	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*828
Tetrafluorosilane		-1608.76	-1614.27	± 0.52	kJ/mol	104.07911 ± 0.00030	7783-61-1*0
Oxygen atom cation		1560.786	1562.643	± 0.0021	kJ/mol	15.99885 ± 0.00030	14581-93-2*0
Ammonium		643.03	631.72	± 0.20	kJ/mol	18.03795 ± 0.00029	14798-03-9*0
Nitrous acid		-72.976	-79.120	± 0.078	kJ/mol	47.01348 ± 0.00061	7782-77-6*1
Methylamidogen		187.98	177.33	± 0.40	kJ/mol	30.04920 ± 0.00085	15622-51-2*0
Cyanide		63.980	67.266	± 0.091	kJ/mol	26.01799 ± 0.00080	57-12-5*0
2-Butyne		159.51	146.55	± 0.45	kJ/mol	54.0904 ± 0.0032	503-17-3*0
Propynylidene		543.73	546.73	± 0.58	kJ/mol	38.0480 ± 0.0024	67152-18-5*1
Difluoromethane		-443.31	-450.93	± 0.33	kJ/mol	52.02339 ± 0.00081	75-10-5*0
Silyl		204.79	199.31	± 0.83	kJ/mol	31.10932 ± 0.00037	13765-44-1*0
Sulfurous acid			-617.30	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*898
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
Butatriene		328.30	322.04	± 0.58	kJ/mol	52.0746 ± 0.0032	2873-50-9*0
Ethoxy		1.38	-12.53	± 0.42	kJ/mol	45.0605 ± 0.0017	2154-50-9*51
Phosgene		-217.50	-219.19	± 0.24	kJ/mol	98.9155 ± 0.0020	75-44-5*0
1-Hydroxy-2-propanone		-354.48	-373.87	± 0.84	kJ/mol	74.0785 ± 0.0025	116-09-6*11
Cyanoamidogen		322.72	320.23	± 0.63	kJ/mol	41.03212 ± 0.00082	12347-01-2*1
Chloroform		-94.59	-99.50	± 0.40	kJ/mol	119.3767 ± 0.0028	67-66-3*0
Tetrafluoroethylene		-670.69	-674.09	± 0.48	kJ/mol	100.0150 ± 0.0016	116-14-3*0
Benzoyl		138.85	125.32	± 0.98	kJ/mol	105.1140 ± 0.0056	2652-65-5*0
Acrylonitrile		193.85	187.09	± 0.66	kJ/mol	53.0627 ± 0.0024	107-13-1*1
Silanol		-271.0	-282.7	± 1.2	kJ/mol	48.11666 ± 0.00051	14475-38-8*0
Naphthalene		171.22	147.74	± 0.55	kJ/mol	128.1705 ± 0.0080	91-20-3*0
1,2-Propadiene-1,3-diylidene		814.43	823.39	± 0.49	kJ/mol	36.0321 ± 0.0024	12075-35-3*0
Methylidyne		664.72	668.05	± 0.52	kJ/mol	13.01864 ± 0.00080	3315-37-5*2
Vinyl anion		237.00	232.58	± 0.68	kJ/mol	27.0458 ± 0.0016	25012-81-1*0
Hydroxymethylium		717.79	709.85	± 0.18	kJ/mol	31.03337 ± 0.00088	18682-95-6*0
Cyanogen bromide		186.8	180.2	± 1.4	kJ/mol	105.9214 ± 0.0013	506-68-3*0
n-Butyl		103.03	80.52	± 0.61	kJ/mol	57.1143 ± 0.0033	2492-36-6*0
neo-Pentane		-134.26	-167.14	± 0.38	kJ/mol	72.1488 ± 0.0041	463-82-1*0
trans-2-Butene		9.60	-10.96	± 0.30	kJ/mol	56.1063 ± 0.0032	624-64-6*0
1-Butene		21.17	0.21	± 0.34	kJ/mol	56.1063 ± 0.0032	106-98-9*0
Ethyl hydroperoxide		-142.67	-161.10	± 0.72	kJ/mol	62.0678 ± 0.0018	3031-74-1*0
Ethylperoxy		-6.23	-22.25	± 0.64	kJ/mol	61.0599 ± 0.0017	3170-61-4*3
Formate		-463.14	-466.78	± 0.55	kJ/mol	45.0180 ± 0.0010	71-47-6*0
Methyl acetate		-394.16	-413.03	± 0.57	kJ/mol	74.0785 ± 0.0025	79-20-9*1
Ethyl bromide		-40.98	-62.92	± 0.24	kJ/mol	108.9651 ± 0.0019	74-96-4*0
Vinyl bromide		88.77	73.97	± 0.56	kJ/mol	106.9492 ± 0.0019	593-60-2*0
Methyl nitrite		-55.42	-67.20	± 0.43	kJ/mol	61.0401 ± 0.0010	624-91-9*2
Propadienone		132.17	130.53	± 0.61	kJ/mol	54.0474 ± 0.0024	61244-93-7*0
Chlorine fluoride		-55.622	-55.717	± 0.030	kJ/mol	54.45110 ± 0.00090	7790-89-8*0
Diazynium		1042.56	1038.95	± 0.67	kJ/mol	29.02087 ± 0.00016	12357-66-3*0
Hypoiodous acid		-53.7	-58.4	± 2.8	kJ/mol	143.91181 ± 0.00031	14332-21-9*0
Nitrite		-182.62	-185.42	± 0.46	kJ/mol	46.00609 ± 0.00060	14797-65-0*0
Hydroxylamine		-33.09	-43.46	± 0.42	kJ/mol	33.02996 ± 0.00037	7803-49-8*1
Aminomethyl		159.43	149.58	± 0.35	kJ/mol	30.04920 ± 0.00085	10507-29-6*0
cis-2-Butene	$C/C=C\C$	14.34	-6.93	± 0.39	kJ/mol	56.1063 ± 0.0032	590-18-1*0
1-Butyne		180.38	166.80	± 0.56	kJ/mol	54.0904 ± 0.0032	107-00-6*0
n-Hexane		-129.93	-166.80	± 0.32	kJ/mol	86.1754 ± 0.0049	110-54-3*0
Methanetetraylbisamidogen		451.38	451.79	± 0.40	kJ/mol	40.02418 ± 0.00081	2669-76-3*0
Tetrabromomethane		143.4	113.7	± 1.1	kJ/mol	331.6267 ± 0.0041	558-13-4*0
Vinyl fluoride		-134.51	-142.31	± 0.45	kJ/mol	46.0436 ± 0.0016	75-02-5*0
Phenylium		1149.14	1136.36	± 0.85	kJ/mol	77.1034 ± 0.0048	17333-73-2*0
Fluorobenzene		-96.01	-111.69	± 0.39	kJ/mol	96.1023 ± 0.0048	462-06-6*0
Nitromethane		-60.76	-74.66	± 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
Nitrous oxide		86.020	82.591	± 0.096	kJ/mol	44.01288 ± 0.00033	10024-97-2*0
Azanide		114.65	111.77	± 0.29	kJ/mol	16.02317 ± 0.00016	17655-31-1*0
Methanium		922.00	911.75	± 0.44	kJ/mol	17.04985 ± 0.00087	15135-49-6*0
Peroxynitrous acid		-5.73	-14.17	± 0.35	kJ/mol	63.01288 ± 0.00091	14691-52-2*3
Ethylidene		361.30	354.30	± 0.48	kJ/mol	28.0532 ± 0.0016	4218-50-2*1
Cyanomethyl		262.86	259.98	± 0.53	kJ/mol	40.0440 ± 0.0016	2932-82-3*0
Cyanic fluoride		8.54	8.87	± 0.70	kJ/mol	45.01584 ± 0.00080	1495-50-7*0
t-Butyl		75.32	50.02	± 0.68	kJ/mol	57.1143 ± 0.0033	1605-73-8*0
n-Pentane		-114.19	-146.06	± 0.29	kJ/mol	72.1488 ± 0.0041	109-66-0*0
Methanediol		-378.49	-392.44	± 0.62	kJ/mol	48.0413 ± 0.0010	463-57-0*1
Formic acid		-354.70	-361.80	± 0.37	kJ/mol	46.0254 ± 0.0010	64-18-6*2
Cyanooxidanyl		126.97	127.44	± 0.33	kJ/mol	42.01684 ± 0.00086	22400-26-6*0
Acetone enol		-151.24	-168.53	± 0.75	kJ/mol	58.0791 ± 0.0025	29456-04-0*1
Ethenamine		69.36	54.80	± 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		-257.21	-272.07	± 0.36	kJ/mol	48.0595 ± 0.0016	353-36-6*0
Chlorotrifluoromethane		-704.29	-709.40	± 0.56	kJ/mol	104.4586 ± 0.0012	75-72-9*0
Pyridine		157.34	140.53	± 0.40	kJ/mol	79.0999 ± 0.0040	110-86-1*0
Acrylonitrile		193.85	187.09	± 0.66	kJ/mol	53.0627 ± 0.0024	107-13-1*0
1,2,3-Butatrien-1-yl		497.41	497.43	± 0.68	kJ/mol	51.0666 ± 0.0032	22112-56-7*0
Disilane		92.0	75.9	± 1.3	kJ/mol	62.21864 ± 0.00073	1590-87-0*0
2,4-Hexadiyne		380.27	370.25	± 0.83	kJ/mol	78.1118 ± 0.0048	2809-69-0*0
Bromooxidanyl		131.22	123.68	± 0.28	kJ/mol	95.9034 ± 0.0010	15656-19-6*0
Dioxygen cation		1164.585	1165.221	± 0.0092	kJ/mol	31.99825 ± 0.00060	12185-07-8*0
Ethynylene		820.006	828.472	± 0.086	kJ/mol	24.0214 ± 0.0016	12070-15-4*0
Ethanide		155.46	144.38	± 0.87	kJ/mol	29.0616 ± 0.0016	25013-41-6*0
Vinylium		1119.14	1115.69	± 0.55	kJ/mol	27.0447 ± 0.0016	14604-48-9*0
Vinylidene		411.23	412.15	± 0.30	kJ/mol	26.0373 ± 0.0016	2143-69-3*0
Hydroxymethylene		112.71	108.94	± 0.27	kJ/mol	30.02598 ± 0.00087	19710-56-6*1
Peroxyformic acid		-279.25	-288.60	± 0.63	kJ/mol	62.0248 ± 0.0012	107-32-4*1
1,2-Propadienyl anion		266.06	263.00	± 0.63	kJ/mol	39.0565 ± 0.0024	64066-06-4*0
Propadienylidene		554.46	555.61	± 0.40	kJ/mol	38.0480 ± 0.0024	60731-10-4*0
1-Propanol		-231.14	-254.98	± 0.20	kJ/mol	60.0950 ± 0.0025	71-23-8*0
Cyclopentane		-43.39	-75.96	± 0.38	kJ/mol	70.1329 ± 0.0041	287-92-3*0
Vinoxy		23.02	16.21	± 0.57	kJ/mol	43.0446 ± 0.0016	6912-06-7*0
Propionaldehyde		-171.10	-186.51	± 0.20	kJ/mol	58.0791 ± 0.0025	123-38-6*0
Phenolate		-146.10	-161.57	± 0.83	kJ/mol	93.1038 ± 0.0048	3229-70-7*0
(1E)-Ethanimine		55.78	39.56	± 0.72	kJ/mol	43.0678 ± 0.0016	56003-81-7*0
Diazomethyl		467.86	465.30	± 0.68	kJ/mol	41.03212 ± 0.00082	20813-32-5*1
Bromotrifluoromethane		-638.68	-650.80	± 0.40	kJ/mol	148.9099 ± 0.0013	75-63-8*0
Bromoform		80.4	54.3	± 1.1	kJ/mol	252.7306 ± 0.0031	75-25-2*0
Cyclopentadienyl		275.33	262.22	± 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		547.69	539.28	± 0.91	kJ/mol	52.0746 ± 0.0032	157-39-1*0
Silylene		271.49	269.82	± 0.84	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
Hypobromite		-95.99	-103.47	± 0.53	kJ/mol	95.9039 ± 0.0010	14380-62-2*0
(E)-Diazene		207.12	199.98	± 0.41	kJ/mol	30.02936 ± 0.00020	15626-43-4*0
Ethylidene		373.64	366.41	± 0.57	kJ/mol	28.0532 ± 0.0016	4218-50-2*2
(E)-Iminomethyl		275.81	272.19	± 0.56	kJ/mol	28.03332 ± 0.00082	54980-10-8*0
Cyanogen		308.19	310.14	± 0.41	kJ/mol	52.0349 ± 0.0016	460-19-5*0
Water			-285.802	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*590
Peroxyformyl		-100.42	-105.72	± 0.67	kJ/mol	61.0168 ± 0.0012	56240-83-6*1
1-Methylethenyl		263.04	252.64	± 0.61	kJ/mol	41.0718 ± 0.0024	15552-77-9*0
Cyclopentene		59.92	35.65	± 0.43	kJ/mol	68.1170 ± 0.0040	142-29-0*0
Trimethylamine		2.68	-26.17	± 0.79	kJ/mol	59.1103 ± 0.0025	75-50-3*0
Diazomethane		273.62	267.35	± 0.86	kJ/mol	42.04006 ± 0.00082	334-88-3*0
Dichloromethylene		229.87	231.06	± 0.64	kJ/mol	82.9161 ± 0.0020	1605-72-7*2
Trifluoromethylium		409.74	406.53	± 0.42	kJ/mol	69.00536 ± 0.00080	18851-76-8*0
Trioxidane		-81.73	-90.57	± 0.41	kJ/mol	50.01408 ± 0.00091	14699-99-1*1
Ethyl nitrite		-81.14	-99.88	± 0.87	kJ/mol	75.0666 ± 0.0017	109-95-5*1
Methylketene		-54.12	-63.59	± 0.63	kJ/mol	56.0633 ± 0.0024	6004-44-0*0
Sulfuric acid		-811.88	-813.87	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*500
Dimethyl sulfide		-20.23	-36.74	± 0.35	kJ/mol	62.1350 ± 0.0062	75-18-3*0
Azido radical		452.39	449.80	± 0.60	kJ/mol	42.02022 ± 0.00021	12596-60-0*0
Nitrosyl ion		984.504	984.499	± 0.065	kJ/mol	30.00559 ± 0.00031	14452-93-8*0
Dioxidanide		-88.92	-91.58	± 0.34	kJ/mol	33.00729 ± 0.00060	14691-59-9*0
Hydroxyoxomethylium		600.69	597.60	± 0.43	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		298.00	291.70	± 0.49	kJ/mol	43.02816 ± 0.00022	7782-79-8*0
Acetylium		666.67	659.38	± 0.42	kJ/mol	43.0441 ± 0.0016	15762-07-9*0
Aminomethylium		763.63	751.65	± 0.53	kJ/mol	30.04865 ± 0.00085	488821-23-4*0
Hydrogen isocyanide		192.07	192.45	± 0.31	kJ/mol	27.02538 ± 0.00081	6914-07-4*0
Chloroacetylene		229.30	230.17	± 0.45	kJ/mol	60.4820 ± 0.0018	593-63-5*0
Fluoroacetylene		105.00	105.71	± 0.40	kJ/mol	44.0277 ± 0.0016	2713-09-9*0
iso-Propylium		823.01	805.93	± 0.23	kJ/mol	43.0871 ± 0.0024	19252-53-0*0
1-Propenyl		278.20	267.36	± 0.63	kJ/mol	41.0718 ± 0.0024	6067-68-1*2
Ozonide		-58.47	-60.83	± 0.21	kJ/mol	47.99875 ± 0.00090	12596-80-4*0
1-Hydroxyethylium		608.88	594.46	± 0.38	kJ/mol	45.0600 ± 0.0017	18682-96-7*1
Ketenyl		177.12	178.21	± 0.54	kJ/mol	41.0287 ± 0.0016	51095-15-9*0
Formic acid		-371.03	-378.32	± 0.21	kJ/mol	46.0254 ± 0.0010	64-18-6*0
1-Butanol		-244.50	-274.75	± 0.24	kJ/mol	74.1216 ± 0.0033	71-36-3*0
Acetic acid		-397.71	-412.12	± 0.52	kJ/mol	60.0520 ± 0.0017	64-19-7*2
Glycolaldehyde		-304.35	-317.62	± 0.89	kJ/mol	60.0520 ± 0.0017	141-46-8*11
Methyl formate		-326.6	-339.1	± 1.1	kJ/mol	60.0520 ± 0.0017	107-31-3*2
Glyoxal		-207.76	-213.40	± 0.55	kJ/mol	58.0361 ± 0.0017	107-22-2*1
(Methylamino)methyl		168.79	152.34	± 0.71	kJ/mol	44.0758 ± 0.0017	31277-24-4*0
Diazirinyl		491.08	487.69	± 0.96	kJ/mol	41.03212 ± 0.00082	69967-71-1*1
Diazirine		320.7	313.0	± 1.1	kJ/mol	42.04006 ± 0.00082	157-22-2*0
Trichloromethyl		73.74	73.26	± 0.84	kJ/mol	118.3688 ± 0.0028	3170-80-7*0
1,1-Dichloroethane		-120.16	-132.94	± 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
Phenylethene		169.91	148.57	± 0.51	kJ/mol	104.1491 ± 0.0064	100-42-5*0
Phenylacetylene		332.76	317.60	± 0.69	kJ/mol	102.1332 ± 0.0064	536-74-3*0
Acetophenone		-60.73	-83.92	± 0.98	kJ/mol	120.1485 ± 0.0064	98-86-2*0
Nitrosomethane		80.78	70.87	± 0.91	kJ/mol	45.04066 ± 0.00088	865-40-7*0
Isocyanoacetylene		484.79	487.02	± 0.98	kJ/mol	51.0468 ± 0.0024	66723-45-3*0
Cyclobutadiene		436.66	428.20	± 0.69	kJ/mol	52.0746 ± 0.0032	1120-53-2*0
Difluorodioxidane		35.33	31.61	± 0.40	kJ/mol	69.99561 ± 0.00060	7783-44-0*0
Fulvene		232.1	216.0	± 1.1	kJ/mol	78.1118 ± 0.0048	497-20-1*0
Silanone		-93.78	-99.13	± 0.99	kJ/mol	46.10078 ± 0.00045	22755-01-7*0
Silyloxy		8.6	0.6	± 1.4	kJ/mol	47.10872 ± 0.00047	81429-20-1*0
Sulfanyl		142.81	143.26	± 0.18	kJ/mol	33.0739 ± 0.0060	13940-21-1*0
Methanethiol		-10.39	-20.66	± 0.46	kJ/mol	48.1085 ± 0.0061	74-93-1*0
Chlorous acid		25.76	20.71	± 0.63	kJ/mol	68.4594 ± 0.0011	13898-47-0*0
Iodooxidanyl		127.05	125.12	± 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		-299.72	-306.27	± 0.22	kJ/mol	62.00549 ± 0.00090	14797-55-8*0
Hypofluorite		-108.84	-108.67	± 0.48	kJ/mol	34.99835 ± 0.00030	12763-66-5*0
Methanide		141.16	137.71	± 0.24	kJ/mol	15.03507 ± 0.00083	15194-58-8*0
Methyleneamidogen		242.09	238.44	± 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
Formyl anion		11.60	11.99	± 0.44	kJ/mol	29.01859 ± 0.00086	57340-31-5*0
n-Propylium		857.18	838.90	± 0.76	kJ/mol	43.0871 ± 0.0024	19252-52-9*0
Cyclopropyl		303.92	291.29	± 0.48	kJ/mol	41.0718 ± 0.0024	2417-82-5*0
2-Propynylidyne		718.80	723.15	± 0.71	kJ/mol	37.0400 ± 0.0024	53590-28-6*0
Fluorodioxidanyl		26.87	25.16	± 0.26	kJ/mol	50.99720 ± 0.00060	15499-23-7*0
iso-Pentane		-118.94	-152.99	± 0.39	kJ/mol	72.1488 ± 0.0041	78-78-4*0
1-Hydroxyethylidene		57.43	47.06	± 0.77	kJ/mol	44.0526 ± 0.0017	30967-49-8*21
Dicarbon monoxide		377.14	381.19	± 0.83	kJ/mol	40.0208 ± 0.0016	12071-23-7*1
Acetic acid		-418.51	-432.68	± 0.36	kJ/mol	60.0520 ± 0.0017	64-19-7*0
Dimethylamidogen		175.06	157.72	± 0.92	kJ/mol	44.0758 ± 0.0017	15337-44-7*0
2-Iminoethyl		219.33	207.97	± 0.86	kJ/mol	42.0599 ± 0.0016	73843-90-0*2
Isocyanoamidogen		489.7	487.7	± 1.2	kJ/mol	41.03212 ± 0.00082	947408-73-3*1
Chloromethylene		320.37	320.65	± 0.89	kJ/mol	48.4713 ± 0.0012	2108-20-5*2
Dibromomethane		27.4	6.0	± 1.1	kJ/mol	173.8346 ± 0.0022	74-95-3*0
1,1-Difluoroethene		-343.46	-350.52	± 0.76	kJ/mol	64.0341 ± 0.0016	75-38-7*0
Indane		90.94	59.91	± 0.76	kJ/mol	118.1757 ± 0.0072	496-11-7*0
o-Tolualdehyde		-44.2	-66.4	± 1.1	kJ/mol	120.1485 ± 0.0064	529-20-4*0
3-Buten-2-one		-95.35	-111.59	± 0.85	kJ/mol	70.0898 ± 0.0032	78-94-4*1
Urea		-218.16	-234.56	± 0.42	kJ/mol	60.05534 ± 0.00091	57-13-6*0
Oxomethaniminium		695.33	688.77	± 0.89	kJ/mol	44.03217 ± 0.00087	59348-22-0*0
Acetamide		-219.61	-237.12	± 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		242.5	230.5	± 1.6	kJ/mol	61.21070 ± 0.00069	73151-72-1*0
Disilene		288.6	280.0	± 1.8	kJ/mol	60.20276 ± 0.00066	15435-77-5*2
1,3-Hexadiyne		405.19	393.49	± 0.95	kJ/mol	78.1118 ± 0.0048	4447-21-6*0
(E)-1-Methylallyl		152.61	135.30	± 0.79	kJ/mol	55.0984 ± 0.0032	17787-86-9*0
Sulfuric acid			-892.23	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*839
Iodine monochloride		19.024	17.391	± 0.013	kJ/mol	162.35717 ± 0.00090	7790-99-0*0
Hypoiodite		-102.38	-104.20	± 0.88	kJ/mol	142.90442 ± 0.00030	15065-65-3*0
Iodotrifluoromethane		-583.27	-589.15	± 0.45	kJ/mol	195.91038 ± 0.00080	2314-97-8*0
Nitrogen atom cation		1872.911	1875.693	± 0.022	kJ/mol	14.006191 ± 0.000070	14158-23-7*0
Trinitrogen cation		1519.60	1516.97	± 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
Nitrogen sesquioxide		90.76	86.19	± 0.15	kJ/mol	76.01168 ± 0.00091	10544-73-7*0
Methyliumyl		1393.21	1394.07	± 0.10	kJ/mol	14.02603 ± 0.00081	15091-72-2*0
Methylene anion		328.19	328.62	± 0.18	kJ/mol	14.02713 ± 0.00081	50928-07-9*0
Methylidyne anion		475.78	479.10	± 0.21	kJ/mol	13.01919 ± 0.00080	28604-54-8*0
Ethanium		874.40	858.14	± 0.61	kJ/mol	31.0764 ± 0.0017	24669-33-8*1
Carbonic acid		-602.30	-612.47	± 0.58	kJ/mol	62.0248 ± 0.0012	463-79-6*1
Methylperoxy anion		-89.68	-99.82	± 0.45	kJ/mol	47.0339 ± 0.0010	35683-44-4*0
Cyclobutane		52.26	27.72	± 0.36	kJ/mol	56.1063 ± 0.0032	287-23-0*0
2-Butynyl		318.11	310.74	± 0.67	kJ/mol	53.0825 ± 0.0032	82252-88-8*0
1,2-Butadienyl		328.93	320.21	± 0.63	kJ/mol	53.0825 ± 0.0032	4777-46-2*0
Isoprene		96.26	75.74	± 0.66	kJ/mol	68.1170 ± 0.0040	78-79-5*0
Chloronium		881.5	878.4	± 1.1	kJ/mol	37.46803 ± 0.00091	36658-55-6*0
Ethynol		95.34	92.86	± 0.73	kJ/mol	42.0367 ± 0.0016	32038-79-2*2
Dioxygen anion		-43.36	-42.72	± 0.17	kJ/mol	31.99935 ± 0.00060	11062-77-4*0
Hydroxymethoxy		-159.56	-169.52	± 0.85	kJ/mol	47.0333 ± 0.0010	72144-78-6*3
Formyloxidanyl		-125.80	-127.46	± 0.55	kJ/mol	45.0174 ± 0.0010	16499-21-1*1
Methoxyethane		-194.30	-217.19	± 0.52	kJ/mol	60.0950 ± 0.0025	540-67-0*0
Acetate		-495.99	-505.12	± 0.80	kJ/mol	59.0446 ± 0.0017	71-50-1*0
Cyanoamidogen anion		69.74	66.73	± 0.72	kJ/mol	41.03267 ± 0.00082	67131-47-9*2
Chlorine atom cation		1370.807	1372.603	± 0.0021	kJ/mol	35.45215 ± 0.00090	24203-47-2*0
1,1,1-Trichloroethane		-133.99	-144.56	± 0.51	kJ/mol	133.4033 ± 0.0031	71-55-6*0
Tetrachloroethene		-20.58	-21.44	± 0.99	kJ/mol	165.8322 ± 0.0039	127-18-4*0
Chlorodifluoromethane		-475.59	-481.78	± 0.99	kJ/mol	86.4681 ± 0.0012	75-45-6*0
Fluoromethylene		148.42	148.70	± 0.43	kJ/mol	32.01704 ± 0.00080	13453-52-6*2
Fluoroformyl		-176.61	-176.03	± 0.37	kJ/mol	47.00850 ± 0.00085	1871-24-5*0
2-Bromoethanol		-196.01	-220.07	± 0.52	kJ/mol	124.9645 ± 0.0019	540-51-2*0
Carbon suboxide		-94.4	-92.3	± 1.0	kJ/mol	68.0309 ± 0.0025	504-64-3*0
Benzyl		230.30	211.48	± 0.55	kJ/mol	91.1305 ± 0.0056	2154-56-5*0
Ethylbenzene		58.43	29.97	± 0.52	kJ/mol	106.1650 ± 0.0064	100-41-4*0
Phenoxy		71.36	56.07	± 0.84	kJ/mol	93.1033 ± 0.0048	2122-46-5*0
m-Tolualdehyde		-48.5	-71.4	± 1.2	kJ/mol	120.1485 ± 0.0064	620-23-5*0
3-Oxo-1-propenyl		190.96	184.93	± 0.91	kJ/mol	55.0553 ± 0.0024	206255-29-0*11
2-Propynal		135.47	133.30	± 0.88	kJ/mol	54.0474 ± 0.0024	624-67-9*0
Chlorine trifluoride		-158.63	-162.73	± 0.86	kJ/mol	92.44791 ± 0.00090	7790-91-2*0
Cyanomethylene		479.7	483.0	± 1.1	kJ/mol	39.0361 ± 0.0016	2612-62-6*1
3-Methylenecyclopropene		395.97	388.04	± 0.82	kJ/mol	52.0746 ± 0.0032	4095-06-1*0
Phenylperoxy		153.7	136.7	± 1.4	kJ/mol	109.1027 ± 0.0049	91422-02-5*0
Fluorosilylidyne		-60.28	-58.45	± 0.62	kJ/mol	47.08390 ± 0.00030	11128-24-8*1
Silylidyne		371.22	373.01	± 0.67	kJ/mol	29.09344 ± 0.00031	13774-94-2*0
Bromosilane		-59.0	-75.5	± 1.4	kJ/mol	111.0133 ± 0.0011	13465-73-1*0
Bromotrimethylsilane		-259.3	-290.0	± 2.0	kJ/mol	153.0931 ± 0.0027	2857-97-8*0
Trimethylsilylium		655.4	634.8	± 1.9	kJ/mol	73.1885 ± 0.0025	28927-31-3*0
1-Methyl-1-propenyl		240.06	223.88	± 0.66	kJ/mol	55.0984 ± 0.0032	71790-71-1*1
1-Butenyl		263.42	246.08	± 0.68	kJ/mol	55.0984 ± 0.0032	2669-61-6*2
Disulfur		127.37	127.68	± 0.27	kJ/mol	64.1320 ± 0.0120	23550-45-0*0
Sulfur monoxide		5.95	6.00	± 0.13	kJ/mol	48.0654 ± 0.0060	13827-32-2*0
Oxygen atom		246.844	249.229	± 0.0021	kJ/mol	15.99940 ± 0.00030	17778-80-2*1
Ammonium			-133.077	± 0.056	kJ/mol	18.03795 ± 0.00029	14798-03-9*800
Methylidyne		592.994	596.328	± 0.081	kJ/mol	13.01864 ± 0.00080	3315-37-5*1
Ethylidyne		640.9	636.3	± 1.1	kJ/mol	27.0452 ± 0.0016	67624-57-1*2
Hydroxyde			-229.759	± 0.023	kJ/mol	17.00789 ± 0.00031	14280-30-9*800
Isocyanomethanide		254.06	251.02	± 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
Hydrogen peroxide cation		897.28	890.30	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*1
1-Methylethylidene		316.06	302.16	± 0.97	kJ/mol	42.0797 ± 0.0024	40852-89-9*2
Propylidene		349.52	335.83	± 0.92	kJ/mol	42.0797 ± 0.0024	6700-78-3*11
Cycloprop-2-enylium		1080.4	1075.3	± 1.0	kJ/mol	39.0554 ± 0.0024	26810-74-2*0
Cyclobutene		178.02	160.97	± 0.60	kJ/mol	54.0904 ± 0.0032	822-35-5*0
1,3-Butadienyl		372.23	361.75	± 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		725.71	709.54	± 0.61	kJ/mol	45.0600 ± 0.0017	38607-31-70
Methoxymethyl		13.46	0.89	± 0.86	kJ/mol	45.0605 ± 0.0017	16520-04-0*0
Methoxymethylene		129.24	118.71	± 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
Diethyl ether		-222.81	-250.23	± 0.75	kJ/mol	74.1216 ± 0.0033	60-29-7*0
Cyanic acid		-12.31	-15.02	± 0.43	kJ/mol	43.02478 ± 0.00086	420-05-3*0
Fulminic acid		170.74	169.28	± 0.44	kJ/mol	43.02478 ± 0.00086	51060-05-0*0
Isofulminic acid		235.26	233.55	± 0.43	kJ/mol	43.02478 ± 0.00086	506-85-4*0
Nitrosomethylidyne		389.4	390.7	± 1.1	kJ/mol	42.01684 ± 0.00086	82267-15-0*0
Acetyl chloride		-232.52	-241.51	± 0.39	kJ/mol	78.4973 ± 0.0019	75-36-5*0
Dioxoethyl		-63.21	-64.63	± 0.86	kJ/mol	57.0281 ± 0.0017	702699-38-5*0
Chlorohydroxymethyl		-54.7	-60.7	± 1.1	kJ/mol	65.4787 ± 0.0012	147139-06-8*1
1,1-Dichloroethene		9.29	3.30	± 0.50	kJ/mol	96.9427 ± 0.0024	75-35-4*0
Dichlorodifluoromethane		-488.92	-493.10	± 0.45	kJ/mol	120.9129 ± 0.0020	75-71-8*0
Fluorodichloromethane		-277.66	-283.11	± 0.90	kJ/mol	102.9224 ± 0.0020	75-43-4*0
Difluoromethylene		-193.85	-193.38	± 0.35	kJ/mol	50.00751 ± 0.00080	2154-59-8*2
Fluoromethylene		210.39	210.73	± 0.65	kJ/mol	32.01704 ± 0.00080	13453-52-6*1
Formyl fluoride		-378.63	-382.22	± 0.31	kJ/mol	48.01644 ± 0.00086	1493-02-3*0
Trioxidanide		-120.0	-123.1	± 1.6	kJ/mol	49.00669 ± 0.00090	89965-38-8*2
Indene		183.88	159.98	± 0.75	kJ/mol	116.1598 ± 0.0072	95-13-6*0
p-Tolualdehyde		-49.2	-72.2	± 1.2	kJ/mol	120.1485 ± 0.0064	104-87-0*0
o-Toluoyl		110.3	91.9	± 1.4	kJ/mol	119.1406 ± 0.0064	104680-89-9*0
Acetonyl		-18.43	-32.03	± 0.76	kJ/mol	57.0712 ± 0.0024	3122-07-4*0
Propyl nitrite		-95.7	-120.7	± 1.8	kJ/mol	89.0932 ± 0.0025	543-67-9*1
1-Formylethenyl		177.60	172.08	± 0.80	kJ/mol	55.0553 ± 0.0024	191018-90-3*0
2-Cyanovinyl		447.81	445.32	± 0.99	kJ/mol	52.0547 ± 0.0024	189141-20-6*2
1,2,3-Butatrien-1-ylium		1271.8	1270.0	± 1.1	kJ/mol	51.0661 ± 0.0032	81932-79-8*2
1-Buten-3-yn-1-yl		547.24	544.58	± 0.86	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
Methylsilane		-9.81	-25.99	± 0.89	kJ/mol	46.14384 ± 0.00095	992-94-9*0
Fluorosilane		-346.21	-355.60	± 0.72	kJ/mol	50.10772 ± 0.00037	13537-33-2*0
Chlorosilane		-126.5	-135.5	± 1.4	kJ/mol	66.56202 ± 0.00097	13465-78-6*0
Tetramethylsilane		-185.8	-216.2	± 1.9	kJ/mol	88.2236 ± 0.0033	75-76-3*0
Hydroxysilyl		-104.1	-112.0	± 1.5	kJ/mol	47.10872 ± 0.00047	113648-09-2*0
Trimethylsilanol		-465.2	-491.5	± 1.9	kJ/mol	90.1964 ± 0.0025	1066-40-6*0
2-Aminoethyl		174.46	158.00	± 0.83	kJ/mol	44.0758 ± 0.0017	4422-53-1*0
2-Propanamine		-56.63	-83.43	± 0.52	kJ/mol	59.1103 ± 0.0025	75-31-0*0
Dinitrogen cation		1503.311	1503.312	± 0.000	kJ/mol	28.01293 ± 0.00014	13966-04-6*0
Nitrogen atom		470.583	472.445	± 0.022	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
Xenon cation		1170.354	1170.354	± 0.0062	kJ/mol	131.2895 ± 0.0200	24203-25-6*0
Nitroxyl		79.39	74.13	± 0.19	kJ/mol	62.00494 ± 0.00090	12033-49-7*0
Oxoniumyl ion		978.494	975.591	± 0.024	kJ/mol	18.01473 ± 0.00033	56583-62-1*0
Hydrazino		234.76	224.24	± 0.69	kJ/mol	31.03730 ± 0.00025	13598-46-4*0
Carbon anion		589.627	594.774	± 0.041	kJ/mol	12.01125 ± 0.00080	14337-00-9*0
Hydrogen isocyanide cation		1351.53	1351.49	± 0.83	kJ/mol	27.02483 ± 0.00081	74158-11-5*0
Cyanomethanide		113.71	110.88	± 0.53	kJ/mol	40.0446 ± 0.0016	21438-99-3*0
Methyloxonium		589.2	575.0	± 1.1	kJ/mol	33.04925 ± 0.00092	17836-08-7*0
n-Propylide		123.1	105.5	± 1.2	kJ/mol	43.0882 ± 0.0024	59513-13-2*0
Allyl anion		134.01	123.00	± 0.21	kJ/mol	41.0723 ± 0.0024	1724-46-5*0
Propargylenide		434.5	437.0	± 1.1	kJ/mol	38.0485 ± 0.0024	82906-05-6*1
2-Butyn-1-yl anion		253.7	244.9	± 1.1	kJ/mol	53.0830 ± 0.0032	65114-66-1*0
Ethoxy		5.64	-8.79	± 0.43	kJ/mol	45.0605 ± 0.0017	2154-50-9*52
Ethenol		-108.89	-119.60	± 0.50	kJ/mol	44.0526 ± 0.0017	557-75-5*2
Hydroperoxymethyl		73.24	65.94	± 0.97	kJ/mol	47.0333 ± 0.0010	74087-87-9*0
Oxiranyl		172.81	164.53	± 0.98	kJ/mol	43.0446 ± 0.0016	31586-84-2*0
Ketene		182.0	179.1	± 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
Dihydroxymethyl		-197.0	-206.4	± 1.2	kJ/mol	47.0333 ± 0.0010	14840-85-8*1
Dioxirane		9.40	1.73	± 0.53	kJ/mol	46.0254 ± 0.0010	157-26-6*0
Chloro hypochlorite		79.79	77.98	± 0.36	kJ/mol	86.9048 ± 0.0018	7791-21-1*0
Methoxyethene		-89.3	-107.1	± 1.1	kJ/mol	58.0791 ± 0.0025	107-25-5*2
2-Propanol		-248.63	-272.72	± 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		-226.6	-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		294.70	286.07	± 0.92	kJ/mol	42.0599 ± 0.0016	180385-92-6*0
Nitrilomethylimidogen		581.6	578.4	± 1.5	kJ/mol	41.03212 ± 0.00082	324529-58-0*2
Cyanoacetylide		300.4	305.6	± 1.1	kJ/mol	50.0394 ± 0.0024	12373-53-4*0
Dichloride		-231.91	-230.85	± 0.34	kJ/mol	70.9059 ± 0.0018	12595-89-0*0
Hydroperoxonium		738.2	727.9	± 1.2	kJ/mol	35.02207 ± 0.00064	70850-26-9*1
Chloromethylidyne		430.63	434.39	± 0.67	kJ/mol	47.4634 ± 0.0012	3889-76-7*0
Chloromethanol		-232.3	-242.6	± 1.2	kJ/mol	66.4866 ± 0.0013	15454-33-8*0
Chloromethoxy		-11.9	-18.7	± 1.1	kJ/mol	65.4787 ± 0.0012	114282-89-2*0
Fluorotrichloromethane		-283.28	-286.43	± 0.76	kJ/mol	137.3672 ± 0.0028	75-69-4*0
Hexafluoroethane		-1334.04	-1342.34	± 0.82	kJ/mol	138.0118 ± 0.0016	76-16-4*0
Chlorooxy hypochlorite		134.57	131.34	± 0.56	kJ/mol	102.9042 ± 0.0019	12292-23-8*0
Formyl chloride		-179.87	-183.07	± 0.67	kJ/mol	64.4707 ± 0.0012	2565-30-2*0
2-Chloroethanol		-249.79	-266.51	± 0.59	kJ/mol	80.5132 ± 0.0019	107-07-3*0
Butadiynyl		801.87	808.47	± 0.96	kJ/mol	49.0507 ± 0.0032	53561-65-2*0
o-Benzyne		468.26	459.35	± 0.86	kJ/mol	76.0960 ± 0.0048	462-80-6*2
Tropyl		296.6	279.1	± 1.1	kJ/mol	91.1305 ± 0.0056	3551-27-7*0
m-Toluoyl		109.3	90.7	± 1.4	kJ/mol	119.1406 ± 0.0064	67958-04-7*0
Sulfur dioxide anion		-401.16	-403.42	± 0.74	kJ/mol	64.0653 ± 0.0060	12143-17-8*0
Iodobenzene		178.45	162.46	± 0.99	kJ/mol	204.0084 ± 0.0048	591-50-4*0
1-Hydroxy-1-methylethyl		-78.24	-96.48	± 0.79	kJ/mol	59.0871 ± 0.0025	5131-95-3*0
Trifluoroethene		-493.0	-498.0	± 1.6	kJ/mol	82.0245 ± 0.0016	359-11-5*0
Peroxyhypochlorous acid		3.97	-1.30	± 0.95	kJ/mol	68.4594 ± 0.0011	67952-07-2*0
Isocyanoethene		285.21	278.71	± 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		448.22	445.76	± 0.97	kJ/mol	52.0547 ± 0.0024	189141-20-6*1
3-Methylene-1-cyclopropen-1-yl		628.2	625.6	± 1.1	kJ/mol	51.0666 ± 0.0032	127611-24-9*0
Oxosilylene		-98.38	-97.22	± 0.54	kJ/mol	44.08490 ± 0.00042	10097-28-6*0
Silyloxy anion		-311.8	-321.1	± 1.6	kJ/mol	47.10927 ± 0.00047	43336-62-5*0
Chlorine pentafluoride		-226.0	-234.1	± 1.3	kJ/mol	130.44472 ± 0.00090	13637-63-3*0
Cyclobutyl		246.54	227.63	± 0.72	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
Sulfuric acid		-715.1	-729.2	± 1.2	kJ/mol	98.0795 ± 0.0061	7664-93-9*0
Sulfurous acid		-511.25	-521.46	± 0.89	kJ/mol	82.0801 ± 0.0061	7782-99-2*2
Sulfo		-366.8	-374.7	± 1.1	kJ/mol	81.0721 ± 0.0061	32750-86-0*0
Dioxodiazoxane		93.0	87.9	± 1.3	kJ/mol	76.01168 ± 0.00091	122413-35-8*1
Nitric acid			-206.54	± 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		7.84	0.76	± 0.41	kJ/mol	63.01288 ± 0.00091	14691-52-2*1
Peroxynitric acid		-41.45	-51.76	± 0.32	kJ/mol	79.0123 ± 0.0012	26404-66-0*0
Carbon cation		1797.856	1803.455	± 0.040	kJ/mol	12.01015 ± 0.00080	14067-05-1*0
Perchloryl		191.76	186.09	± 0.62	kJ/mol	83.4509 ± 0.0013	13932-10-0*0
Ethylidyne		508.65	504.96	± 0.80	kJ/mol	27.0452 ± 0.0016	67624-57-1*0
Ethynylium		1687.64	1690.97	± 0.15	kJ/mol	25.0288 ± 0.0016	16456-59-0*0
Methylamidogen anion		145.41	134.58	± 0.64	kJ/mol	30.04975 ± 0.00085	54448-39-4*0
Methylimidogen		323.0	315.3	± 1.0	kJ/mol	29.04126 ± 0.00083	27770-42-9*0
Iminomethylium		953.4	949.3	± 1.4	kJ/mol	28.03277 ± 0.00082	196216-36-1*0
Fluoronium		774.04	771.10	± 0.91	kJ/mol	21.01373 ± 0.00014	12206-67-6*2
Hydrogen carbonate		-719.2	-725.6	± 1.5	kJ/mol	61.0174 ± 0.0012	71-52-3*0
Chlorate		-208.2	-213.7	± 1.5	kJ/mol	83.4514 ± 0.0013	14866-68-3*0
Cyclopropylide		265.4	252.6	± 1.1	kJ/mol	41.0723 ± 0.0024	1724-45-4*0
Propylidyne		492.7	483.0	± 1.2	kJ/mol	41.0718 ± 0.0024	85056-54-8*1
Cyclopropylidene		474.99	466.97	± 0.84	kJ/mol	40.0639 ± 0.0024	2143-70-6*1
Propargylium		1193.53	1190.72	± 0.32	kJ/mol	39.0554 ± 0.0024	21540-27-2*0
Cycloprop-1-enyl		527.47	523.08	± 0.58	kJ/mol	39.0559 ± 0.0024	19528-44-0*0
Cyclopropenylidene		497.09	496.13	± 0.45	kJ/mol	38.0480 ± 0.0024	16165-40-5*0
Propargylenide		437.0	439.5	± 1.1	kJ/mol	38.0485 ± 0.0024	82906-05-6*2
2-Propyn-1-ylium-1-ylidene		1598.50	1602.88	± 0.90	kJ/mol	37.0395 ± 0.0024	75104-46-0*0
sec-Butyl		91.26	66.49	± 0.72	kJ/mol	57.1143 ± 0.0033	2348-55-2*0
iso-Butyl		97.31	73.32	± 0.78	kJ/mol	57.1143 ± 0.0033	4630-45-9*0
1-Methylene-2-propenyl		327.13	317.13	± 0.75	kJ/mol	53.0825 ± 0.0032	1204515-52-5*0
Bromanylium		1257.786	1251.723	± 0.056	kJ/mol	79.90345 ± 0.00100	22541-56-6*0
n-Heptane		-145.42	-187.30	± 0.45	kJ/mol	100.2019 ± 0.0057	142-82-5*0
n-Octane		-161.04	-207.87	± 0.53	kJ/mol	114.2285 ± 0.0065	111-65-9*0
Oxoethanide		-43.9	-49.5	± 1.3	kJ/mol	43.0452 ± 0.0016	78944-68-0*0
Oxirene		273.20	271.04	± 0.92	kJ/mol	42.0367 ± 0.0016	157-18-6*2
2-Hydroperoxyethyl		64.6	50.3	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-97-3*32
Methoxyoxomethyl		-152.7	-160.8	± 1.2	kJ/mol	59.0440 ± 0.0017	16481-04-2*1
Hydroxyformyl		-174.34	-177.36	± 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
Difluoride		-291.6	-290.7	± 1.4	kJ/mol	37.9973550 ± 0.0000010	12184-85-9*0
Ethyl formate		-375.1	-393.8	± 1.0	kJ/mol	74.0785 ± 0.0025	109-94-4*1
Propionic acid		-435.90	-453.80	± 0.60	kJ/mol	74.0785 ± 0.0025	79-09-4*1
(Methylimino)methyl		278.0	267.9	± 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		166.5	143.4	± 1.3	kJ/mol	58.1024 ± 0.0025	30208-47-0*0
Cyanoamidogen		652.4	649.6	± 1.2	kJ/mol	41.03212 ± 0.00082	12347-01-2*21
Diazomethyl		652.7	649.7	± 1.3	kJ/mol	41.03212 ± 0.00082	20813-32-5*22
Diazomethanide		305.19	302.10	± 0.76	kJ/mol	41.03267 ± 0.00082	100840-43-5*2
Isocyanoamidogen		828.2	825.4	± 1.3	kJ/mol	41.03212 ± 0.00082	947408-73-3*22
Ethylamidogen anion		106.53	88.88	± 0.80	kJ/mol	44.0763 ± 0.0017	54448-40-7*0
Water dimer		-491.030	-499.070	± 0.044	kJ/mol	36.03056 ± 0.00066	25655-83-8*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	$C(\Cl)=C\Cl$	3.81	-2.19	± 0.55	kJ/mol	96.9427 ± 0.0024	156-59-2*0
Dichloroacetylene		232.72	236.02	± 0.74	kJ/mol	94.9268 ± 0.0024	7572-29-4*0
Difluoromethylene		-193.85	-193.38	± 0.35	kJ/mol	50.00751 ± 0.00080	2154-59-8*0
1,1-Difluoroethane		-488.96	-502.69	± 0.53	kJ/mol	66.0500 ± 0.0016	75-37-6*0
2-Fluoroethanol		-405.61	-422.85	± 0.99	kJ/mol	64.0589 ± 0.0017	371-62-0*0
1,3,5-Hexatriyne		682.1	687.0	± 1.2	kJ/mol	74.0801 ± 0.0048	3161-99-7*0
Benzylide		142.05	123.13	± 0.40	kJ/mol	91.1310 ± 0.0056	18860-15-6*0
Cycloheptatriene		207.63	184.21	± 0.94	kJ/mol	92.1384 ± 0.0056	544-25-2*0
Benzonitrile		229.99	215.79	± 0.92	kJ/mol	103.1213 ± 0.0056	100-47-0*0
p-Toluoyl		108.4	89.8	± 1.4	kJ/mol	119.1406 ± 0.0064	67958-03-6*0
Acetonate		-187.53	-201.09	± 0.93	kJ/mol	57.0717 ± 0.0024	24262-31-5*0
Methyl nitrite		-55.42	-66.09	± 0.43	kJ/mol	61.0401 ± 0.0010	624-91-9*0
Acryloyl		102.78	97.19	± 0.98	kJ/mol	55.0553 ± 0.0024	72241-20-4*2
3-Oxo-1,2-propadien-1-yl		290.30	292.82	± 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
Difluorosilylene		-629.3	-630.2	± 1.4	kJ/mol	66.08231 ± 0.00030	13966-66-0*2
Silylene		362.0	360.4	± 1.1	kJ/mol	30.10138 ± 0.00033	13825-90-6*1
Di-mu-hydrodihydrodisilicon		374.5	364.1	± 2.3	kJ/mol	60.20276 ± 0.00066	129970-82-7*12
Trimethylsiloxy		-188.1	-211.1	± 1.9	kJ/mol	89.1885 ± 0.0025	54572-10-0*0
1,5-Hexadiyne		431.6	421.1	± 1.2	kJ/mol	78.1118 ± 0.0048	628-16-0*0
1,3-Pentadiyne		418.08	413.86	± 0.72	kJ/mol	64.0853 ± 0.0040	4911-55-1*0
2-Methylallyl		155.91	138.79	± 0.77	kJ/mol	55.0984 ± 0.0032	15157-95-6*0
3-Butenyl		223.19	206.68	± 0.91	kJ/mol	55.0984 ± 0.0032	2154-62-3*0
2-Methyl-1-propenyl		251.21	234.19	± 0.72	kJ/mol	55.0984 ± 0.0032	33825-33-1*0
Chloric acid		0.6	-6.5	± 1.1	kJ/mol	84.4588 ± 0.0013	7790-93-4*0
N-Methylethanamine		-17.4	-45.6	± 1.1	kJ/mol	59.1103 ± 0.0025	624-78-2*0
Phenanthrene		232.03	203.21	± 0.75	kJ/mol	178.2292 ± 0.0112	85-01-8*0
Trioxidane		-72.60	-81.09	± 0.79	kJ/mol	50.01408 ± 0.00091	14699-99-1*2
Disulfene oxide		-50.62	-52.63	± 0.43	kJ/mol	80.1314 ± 0.0120	20901-21-7*0
Sulfur hydroxide oxide		-474.1	-483.6	± 1.7	kJ/mol	97.0715 ± 0.0061	12337-07-4*1
2-Hydrotrioxy		299.7	293.9	± 1.2	kJ/mol	49.00614 ± 0.00090	12500-78-60
Ethanethiol		-28.75	-45.57	± 0.38	kJ/mol	62.1350 ± 0.0062	75-08-1*0
Dinitrogen tetraoxide		20.18	10.90	± 0.14	kJ/mol	92.0111 ± 0.0012	10544-72-6*0
Azanylium		944.273	937.318	± 0.029	kJ/mol	17.03001 ± 0.00022	19496-55-0*0
Nitryl hydride		-36.78	-43.75	± 0.93	kJ/mol	47.01348 ± 0.00061	90266-90-3*0
Oxygen atom		436.665	438.523	± 0.0021	kJ/mol	15.99940 ± 0.00030	17778-80-2*2
Methyliumylidene		1619.760	1623.104	± 0.041	kJ/mol	13.01809 ± 0.00080	24361-82-8*0
Ethylidyne		508.65	504.96	± 0.80	kJ/mol	27.0452 ± 0.0016	67624-57-1*1
Vinylidene anion		364.27	364.09	± 0.31	kJ/mol	26.0378 ± 0.0016	66295-36-1*0
Trioxygen difluoride		112.5	106.7	± 1.1	kJ/mol	85.99501 ± 0.00090	16829-28-0*1
Methanol cation		856.94	846.61	± 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
Oxidanylium		1293.362	1293.391	± 0.026	kJ/mol	17.00679 ± 0.00031	12259-29-9*0
Carbonic acid		-596.48	-606.60	± 0.74	kJ/mol	62.0248 ± 0.0012	463-79-6*2
Carbonic acid		-561.30	-570.14	± 0.91	kJ/mol	62.0248 ± 0.0012	463-79-6*3
Trioxidanyl		25.36	23.37	± 0.13	kJ/mol	49.00614 ± 0.00090	12500-78-6*1
Hydroperoxycarbonyl		-73.25	-77.11	± 0.97	kJ/mol	61.0168 ± 0.0012	153751-35-0*0
Allylium		964.47	952.91	± 0.33	kJ/mol	41.0713 ± 0.0024	1724-44-3*0
Propylidyne		624.9	613.3	± 1.3	kJ/mol	41.0718 ± 0.0024	85056-54-8*2
1-Propynyl		528.53	526.36	± 0.65	kJ/mol	39.0559 ± 0.0024	89342-91-6*0
1-Propynylide		264.59	261.01	± 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
Iodine monobromide		49.727	40.780	± 0.066	kJ/mol	206.8085 ± 0.0010	7789-33-5*0
t-Butyl anion		76.8	52.1	± 1.3	kJ/mol	57.1148 ± 0.0033	65114-21-8*0
Tetroxidane		-33.30	-43.96	± 0.44	kJ/mol	66.0135 ± 0.0012	29683-94-1*21
2-Hydroxyethenyl		137.98	131.24	± 0.72	kJ/mol	43.0446 ± 0.0016	108665-16-3*21
Bromochlorane		21.891	14.447	± 0.059	kJ/mol	115.3567 ± 0.0013	13863-41-7*0
Oxiranylidene		213.5	209.3	± 1.4	kJ/mol	42.0367 ± 0.0016	50983-85-2*2
1-Hydroperoxyethylium		690.5	674.8	± 1.5	kJ/mol	61.0594 ± 0.0017	126898-98-421
Hydroxyformyl anion		-313.64	-315.45	± 0.56	kJ/mol	45.0180 ± 0.0010	78944-70-4*1
Ethoxyethene		-117.8	-141.6	± 1.5	kJ/mol	72.1057 ± 0.0033	109-92-2*2
1,1-Ethenediol		-307.59	-320.54	± 0.83	kJ/mol	60.0520 ± 0.0017	10375-04-9*1
1,2-Ethenediol		-272.70	-285.03	± 0.91	kJ/mol	60.0520 ± 0.0017	1571-60-4*1
(Formyloxy)methyl		-151.4	-159.5	± 1.1	kJ/mol	59.0440 ± 0.0017	3122-12-1*1
Ethylene glycol		-369.65	-389.27	± 0.40	kJ/mol	62.0678 ± 0.0018	107-21-1*0
Oxalic acid		-721.0	-731.6	± 1.2	kJ/mol	90.0349 ± 0.0020	144-62-7*0
(Methylamino)methyl cation		729.62	711.00	± 0.98	kJ/mol	44.0752 ± 0.0017	31277-24-40
(Methyleneamino)methyl anion		187.0	176.6	± 1.6	kJ/mol	42.0604 ± 0.0016	73859-26-4*0
2-Aminoethenyl		319.8	309.6	± 1.3	kJ/mol	42.0599 ± 0.0016	176964-54-8*2
Iodine		107.157	106.757	± 0.0021	kJ/mol	126.904470 ± 0.000030	14362-44-8*1
Bromotrichloromethane		-29.92	-39.06	± 0.54	kJ/mol	198.2728 ± 0.0030	75-62-7*0
Dichloromethyl		92.88	90.96	± 0.88	kJ/mol	83.9240 ± 0.0020	3474-12-2*0
Chloromethyl		118.45	115.38	± 0.87	kJ/mol	49.4793 ± 0.0012	6806-86-6*0
Methyl hypochlorite		-53.0	-62.9	± 1.4	kJ/mol	66.4866 ± 0.0013	593-78-2*0
1,2-Dichloroethane		-118.50	-130.45	± 0.54	kJ/mol	98.9586 ± 0.0024	107-06-2*0
Tetraiodomethane		320.9	315.7	± 2.0	kJ/mol	519.62858 ± 0.00081	507-25-5*0
Chlorofluoromethane		-256.44	-263.64	± 0.85	kJ/mol	68.4777 ± 0.0012	593-70-4*0
Difluoromethyliumyl		908.27	908.70	± 0.77	kJ/mol	50.00696 ± 0.00080	54250-40-7*0
Fluoromethyliumylidene		1123.07	1126.29	± 0.44	kJ/mol	31.00855 ± 0.00080	33412-11-2*0
Hydrogen fluoride			-324.57	± 0.13	kJ/mol	20.006343 ± 0.000070	7664-39-3*955
1,2-Difluoroacetylene		2.90	5.73	± 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		413.89	404.78	± 0.95	kJ/mol	76.0965 ± 0.0048	100569-88-8*0
Cycloheptene		28.51	-8.72	± 0.75	kJ/mol	96.1702 ± 0.0057	628-92-2*0
Benzoylium		764.1	750.0	± 1.3	kJ/mol	105.1135 ± 0.0056	19270-10-1*0
Benzoyl fluoride		-287.9	-304.3	± 1.3	kJ/mol	124.1124 ± 0.0056	455-32-3*0
Fluorobenzene cation		791.96	776.94	± 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
1-Methylethoxy		-25.05	-43.81	± 0.74	kJ/mol	59.0871 ± 0.0025	3958-66-5*0
Nitromethyl		139.6	130.2	± 1.1	kJ/mol	60.0321 ± 0.0010	16787-85-2*0
2-Butanone		-216.85	-238.30	± 0.79	kJ/mol	72.1057 ± 0.0033	78-93-3*0
Acryloyl		101.1	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	649.3	± 1.1	kJ/mol	51.0666 ± 0.0032	127611-22-7*0
Trifluorosilyl		-993.0	-996.1	± 1.4	kJ/mol	85.08071 ± 0.00030	14835-14-4*0
Dioxaziridinyl		355.1	352.6	± 1.4	kJ/mol	46.00554 ± 0.00060	66252-29-7*0
Silylsilylene		317.2	309.4	± 2.0	kJ/mol	60.20276 ± 0.00066	50420-90-1*2
Fluorotrimethylsilane		-547.1	-570.7	± 2.0	kJ/mol	92.1875 ± 0.0025	420-56-4*0
Chlorotrimethylsilane		-326.3	-349.4	± 2.3	kJ/mol	108.6418 ± 0.0027	75-77-4*0
Trimethylsiloxide		-486.6	-510.4	± 2.1	kJ/mol	89.1890 ± 0.0025	41866-81-3*0
1,4-Hexadiyne		424.7	414.7	± 1.3	kJ/mol	78.1118 ± 0.0048	10420-91-4*0
Biallenyl		410.6	399.0	± 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		133.34	116.55	± 0.94	kJ/mol	44.0758 ± 0.0017	30208-36-7*0
Ethylamidogen		166.72	150.60	± 0.95	kJ/mol	44.0758 ± 0.0017	41084-92-8*0
2-Naphthyl anion		288.8	269.4	± 1.2	kJ/mol	127.1631 ± 0.0080	88760-89-8*0
1-Naphthyl anion		283.6	264.2	± 1.2	kJ/mol	127.1631 ± 0.0080	125254-29-7*0
Nitrosamine		84.99	76.10	± 0.96	kJ/mol	46.02876 ± 0.00036	35576-91-1*0
Hypochloroperoxoous acid, hydroxy ester		48.4	41.5	± 1.8	kJ/mol	84.4588 ± 0.0013	928652-99-7*1
Diazenyl		252.15	249.23	± 0.45	kJ/mol	29.02142 ± 0.00016	36882-13-0*0
Nitrosyl chloride		54.470	52.569	± 0.067	kJ/mol	65.45884 ± 0.00095	2696-92-6*0
Carbide		504.42	510.99	± 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		1047.18	1054.78	± 0.68	kJ/mol	48.0428 ± 0.0032	12184-80-4*0
Methane cation		1150.686	1144.303	± 0.057	kJ/mol	16.04191 ± 0.00085	20741-88-2*0
Ethanium		874.40	858.16	± 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
Iodide			-56.827	± 0.090	kJ/mol	126.905019 ± 0.000030	20461-54-5*800
1-Ethylium-1-ylidene		1329.8	1328.4	± 1.2	kJ/mol	27.0447 ± 0.0016	78949-84-5*0
Ethylidyne anion		457.2	453.1	± 1.2	kJ/mol	27.0458 ± 0.0016	117768-70-4*0
Isocyanomethyl		363.3	360.9	± 1.1	kJ/mol	40.0440 ± 0.0016	70971-59-4*0
Methyloxoniumylidene		1062.77	1054.96	± 0.57	kJ/mol	31.03337 ± 0.00088	58157-09-8*0
Hydroxymethanide		10.0	3.4	± 1.5	kJ/mol	31.03447 ± 0.00088	55830-71-2*0
Formaldehyde		-105.380	-109.221	± 0.095	kJ/mol	30.02598 ± 0.00087	50-00-0*2
Hydroxymethylene		131.12	127.38	± 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
Water anion		31.3	29.8	± 3.1	kJ/mol	18.01583 ± 0.00033	12259-30-2*100
Isoformyl		217.25	217.64	± 0.69	kJ/mol	29.01804 ± 0.00086	71080-92-7*0
Hydrogen bromide			-120.50	± 0.13	kJ/mol	80.9119 ± 0.0010	10035-10-6*800
Hydroxyoxomethoxy		-360.36	-366.44	± 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		326.9	313.7	± 1.2	kJ/mol	42.0797 ± 0.0024	40852-89-9*1
1-Propenyl		280.27	269.45	± 0.76	kJ/mol	41.0718 ± 0.0024	6067-68-1*1
Cyclopropynyl		711.28	715.41	± 0.71	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
1,2-Butadienyl anion		255.7	246.2	± 1.1	kJ/mol	53.0830 ± 0.0032	65114-67-2*0
Neopentyl		70.0	40.3	± 1.3	kJ/mol	71.1408 ± 0.0041	3744-21-6*0
n-Hexane		-179.86	-198.52	± 0.32	kJ/mol	86.1754 ± 0.0049	110-54-3*500
1-Hydroxyethylium		610.9	596.5	± 1.1	kJ/mol	45.0600 ± 0.0017	18682-96-7*2
2-Hydroxyethyl		-10.86	-23.49	± 0.93	kJ/mol	45.0605 ± 0.0017	4422-54-2*2
Bromonium		924.4	913.6	± 3.0	kJ/mol	81.9193 ± 0.0010	36658-54-5*0
Vinyl alcohol cation		778.6	767.4	± 1.3	kJ/mol	44.0520 ± 0.0017	57239-63-1*2
1-Hydroxyethylidene		70.06	59.55	± 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	726.3	± 1.6	kJ/mol	40.0208 ± 0.0016	12071-23-72
Bromide			-120.50	± 0.13	kJ/mol	79.90455 ± 0.00100	24959-67-9*800
Dinitrogen pentoxide		24.33	14.76	± 0.29	kJ/mol	108.0105 ± 0.0015	10102-03-1*0
Oxoethylidene		275.5	272.6	± 1.7	kJ/mol	42.0367 ± 0.0016	39920-84-8*2
Dihydroxymethanide		-194.2	-203.2	± 1.8	kJ/mol	47.0339 ± 0.0010	61192-32-3*2
1-Hydroperoxyethyl		39.5	25.9	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-98-4*0
Formic acid cation		721.95	714.86	± 0.25	kJ/mol	46.0248 ± 0.0010	50614-05-6*1
Formyloxidanyl		-121.99	-125.34	± 0.55	kJ/mol	45.0174 ± 0.0010	16499-21-1*2
Bromo hypobromite		121.1	104.6	± 1.2	kJ/mol	175.8074 ± 0.0020	21308-80-5*0
Dioxidenium		1110.87	1107.98	± 0.11	kJ/mol	33.00619 ± 0.00060	12207-52-2*0
1-Methoxyethenol		-284.3	-303.6	± 1.2	kJ/mol	74.0785 ± 0.0025	4453-91-2*1
Hydrogen difluoride		-198.5	-198.4	± 1.2	kJ/mol	39.004746 ± 0.000070	12528-21-1*1
1-Propene-1,2-diol		-311.4	-329.8	± 1.2	kJ/mol	74.0785 ± 0.0025	7333-03-1*1
1-Propene-1,2-diol		-293.1	-309.7	± 1.3	kJ/mol	74.0785 ± 0.0025	7333-03-1*2
(Formyloxy)methyl		-135.7	-143.9	± 1.3	kJ/mol	59.0440 ± 0.0017	3122-12-1*2
Carboxymethyl		-206.0	-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	199.3	± 1.1	kJ/mol	42.0599 ± 0.0016	28445-33-2*0
(Methyleneamino)methyl		244.2	233.6	± 1.3	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		454.9	452.2	± 1.5	kJ/mol	41.03267 ± 0.00082	130614-84-5*2
1H-Diazirin-3-yl		618.7	615.8	± 1.6	kJ/mol	41.03212 ± 0.00082	324529-57-9*1
Iodine cation		1115.549	1115.149	± 0.0062	kJ/mol	126.903921 ± 0.000030	22541-93-1*0
1H-Diazirene		405.1	398.1	± 1.4	kJ/mol	42.04006 ± 0.00082	157-23-3*0
Azide		193.64	190.13	± 0.91	kJ/mol	42.02077 ± 0.00021	14343-69-2*0
1,1,2-Trichloroethane		-135.6	-147.3	± 1.1	kJ/mol	133.4033 ± 0.0031	79-00-5*0
1,1,1,2-Tetrachloroethane		-144.4	-152.9	± 1.3	kJ/mol	167.8481 ± 0.0039	630-20-6*0
Pentachloroethyl		28.9	27.0	± 1.3	kJ/mol	201.2849 ± 0.0048	7094-17-9*0
Iodomethane			-12.26	± 0.20	kJ/mol	141.93899 ± 0.00083	74-88-4*590
Difluoromethylene		43.34	44.06	± 0.35	kJ/mol	50.00751 ± 0.00080	2154-59-8*1
Ethyl iodide		-9.40	-39.27	± 0.48	kJ/mol	155.9656 ± 0.0016	75-03-6*500
cis-1,2-Difluoroethene	$F/C=C\F$	-302.81	-309.57	± 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	± 1.3	kJ/mol	66.00691 ± 0.00085	479587-30-9*2
Dibromophosgene		-97.93	-113.86	± 0.37	kJ/mol	187.8181 ± 0.0022	593-95-3*0
1,3,5-Hexatriynyl		1003.1	1010.6	± 2.3	kJ/mol	73.0721 ± 0.0048	88053-50-3*0
Benzene		50.82	49.27	± 0.21	kJ/mol	78.1118 ± 0.0048	71-43-2*500
o-Benzyne		468.26	459.35	± 0.86	kJ/mol	76.0960 ± 0.0048	462-80-6*0
m-Benzyne		527.5	519.0	± 1.2	kJ/mol	76.0960 ± 0.0048	1828-89-3*2
p-Benzyne		587.2	577.7	± 1.2	kJ/mol	76.0960 ± 0.0048	3355-34-8*2
1H-Triazirin-1-yl		586.0	584.3	± 2.0	kJ/mol	42.02022 ± 0.00021	912535-95-6*0
Cycloheptane		-72.45	-117.95	± 0.52	kJ/mol	98.1861 ± 0.0057	291-64-5*0
Chlorine difluoride		-47.0	-48.2	± 1.3	kJ/mol	73.44951 ± 0.00090	24801-48-7*0
Propyn-1-ol		65.6	57.4	± 1.1	kJ/mol	56.0633 ± 0.0024	6175-54-8*0
Formylethynyl		468.5	470.4	± 1.3	kJ/mol	53.0394 ± 0.0024	277743-00-7*0
2-Cyclopropen-1-one		163.9	160.0	± 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		285.21	278.71	± 0.94	kJ/mol	53.0627 ± 0.0024	14668-82-7*1
1-Cyanoethylidene		437.6	433.8	± 1.5	kJ/mol	53.0627 ± 0.0024	498544-34-6*1
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
Bifluoride		-481.8	-480.6	± 1.9	kJ/mol	39.005295 ± 0.000070	18130-74-02
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	323.6	± 1.3	kJ/mol	51.0672 ± 0.0032	58870-47-6*2
Cyclobutenyl		337.3	324.8	± 1.2	kJ/mol	53.0825 ± 0.0032	24669-29-2*0
Propargyl chloride		186.6	180.7	± 1.3	kJ/mol	74.5086 ± 0.0026	624-65-7*0
Dioxosilane		-277.9	-279.3	± 2.0	kJ/mol	60.08430 ± 0.00067	7631-86-9*0
Dimethylsilane		-66.7	-88.2	± 1.1	kJ/mol	60.1704 ± 0.0017	1111-74-6*0
Chloryl hydride		197.7	191.2	± 1.6	kJ/mol	68.4594 ± 0.0011	174365-32-3*0
Trimethylsilyl		47.6	25.5	± 1.9	kJ/mol	73.1891 ± 0.0025	16571-41-8*0
Benzvalene		404.4	386.7	± 1.2	kJ/mol	78.1118 ± 0.0048	659-85-8*0
1-Ethynyl-2-propyn-1-ylidene		727.0	734.1	± 1.7	kJ/mol	62.0694 ± 0.0040	882068-94-2*1
2-Naphthalenyl		416.8	397.2	± 1.3	kJ/mol	127.1626 ± 0.0080	10237-50-0*0
1-Naphthalenyl		418.1	398.5	± 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		-521.1	-535.5	± 1.1	kJ/mol	88.0621 ± 0.0026	127-17-3*0
Thiodioxy		199.2	197.1	± 1.3	kJ/mol	64.0648 ± 0.0060	164034-62-2*0
Sulfenic acid		-108.0	-114.2	± 1.1	kJ/mol	50.0813 ± 0.0060	62607-44-7*0
Dioxosilane		-906.75	-911.73	± 0.63	kJ/mol	60.08430 ± 0.00067	7631-86-9*505
Peroxynitrous acid		-0.11	-7.16	± 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
Deuterium atom		219.804	221.717	± 0.000	kJ/mol	2.01410177800 ± 0.00000000040	16873-17-9*0
Methylammonium		628.39	609.48	± 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		192.85	189.10	± 0.88	kJ/mol	28.03387 ± 0.00082	28892-56-0*0
(Z)-Iminomethyl		294.54	291.05	± 0.89	kJ/mol	28.03332 ± 0.00082	54980-11-9*0
Aminomethylidyne		372.0	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		395.32	393.29	± 0.96	kJ/mol	40.0440 ± 0.0016	73456-14-1*0
Methyleneoxonium		152.53	144.22	± 0.49	kJ/mol	32.04186 ± 0.00090	177788-17-9*0
Triiodide			-51.54	± 0.80	kJ/mol	380.713959 ± 0.000090	14900-04-0*800
Hydroxymethylene anion		147.2	144.1	± 1.6	kJ/mol	30.02653 ± 0.00087	207914-87-2*1
Hydroxymethyliumylidene		986.01	987.65	± 0.83	kJ/mol	29.01749 ± 0.00086	60528-75-8*0
Isoformyl anion		55.8	58.4	± 1.8	kJ/mol	29.01859 ± 0.00086	81747-63-9*1
Nitrosodioxaziridine		413.7	407.7	± 1.8	kJ/mol	76.01168 ± 0.00091	132871-99-9*1
Carbonic acid		-602.30	-611.62	± 0.58	kJ/mol	62.0248 ± 0.0012	463-79-6*0
Oxygen cation monohydrate		1153.3	1147.8	± 3.3	kJ/mol	34.01413 ± 0.00062	31748-17-10
Peroxyformic acid		-265.3	-273.2	± 1.5	kJ/mol	62.0248 ± 0.0012	107-32-4*2
Perchloric acid		11.7	0.2	± 1.3	kJ/mol	100.4582 ± 0.0015	7601-90-3*0
1,3-Propanediyl		319.3	307.1	± 1.3	kJ/mol	42.0797 ± 0.0024	32458-33-6*11
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
Cycloprop-2-enyl		490.30	485.75	± 0.58	kJ/mol	39.0559 ± 0.0024	28933-84-8*0
2-Propen-1-yl-3-ylidene		556.64	554.38	± 0.89	kJ/mol	39.0559 ± 0.0024	202744-74-9*0
2-Propynylidyne anion		540.81	545.58	± 0.75	kJ/mol	37.0406 ± 0.0024	82893-67-2*0
t-Butylium		733.97	710.69	± 0.98	kJ/mol	57.1137 ± 0.0033	14804-25-2*0
Methylcyclopropane		47.8	24.6	± 1.3	kJ/mol	56.1063 ± 0.0032	594-11-6*0
Fluoride			-334.70	± 0.15	kJ/mol	18.99895178 ± 0.00000050	16984-48-8*800
1,2-Butadienylium		1099.2	1089.9	± 1.2	kJ/mol	53.0820 ± 0.0032	65114-67-22
2-Hydroxy-1,1-dimethylethyl		-71.6	-96.5	± 1.4	kJ/mol	73.1137 ± 0.0033	5723-75-1*0
2,2-Dimethylbutane		-145.32	-185.75	± 0.75	kJ/mol	86.1754 ± 0.0049	75-83-2*0
n-Nonane		-176.21	-228.00	± 0.49	kJ/mol	128.2551 ± 0.0073	111-84-2*0
Ethanol		-269.62	-277.38	± 0.20	kJ/mol	46.0684 ± 0.0017	64-17-5*500
Dioxygen		0.000	0.000	± 0.000	kJ/mol	31.99880 ± 0.00060	7782-44-7*1
Vinyl alcohol cation		786.63	775.41	± 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		-152.99	-160.04	± 0.57	kJ/mol	43.0452 ± 0.0016	35731-40-9*0
Oxywater		64.8	58.3	± 1.3	kJ/mol	34.01468 ± 0.00062	171363-09-0*0
Oxiranyl anion		121.3	113.3	± 1.5	kJ/mol	43.0452 ± 0.0016	72722-59-9*2
Ketene		-45.33	-48.39	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*2
COC vdW		589.8	598.5	± 1.5	kJ/mol	40.0208 ± 0.0016	12071-24-81
Oxirene		389.9	385.7	± 1.4	kJ/mol	42.0367 ± 0.0016	157-18-6*12
1,2,3-Trioxolane		-9.5	-27.2	± 1.8	kJ/mol	76.0514 ± 0.0019	6669-36-9*0
Methanediol		-368.88	-381.82	± 0.74	kJ/mol	48.0413 ± 0.0010	463-57-0*2
Hydroxymethoxy anion		-373.80	-383.74	± 0.86	kJ/mol	47.0339 ± 0.0010	67899-36-9*2
Ethoxyoxoniumylidene		923.8	911.4	± 1.5	kJ/mol	61.0594 ± 0.0017	268728-77-4*1
Ethaneperoxolate		-120.46	-137.08	± 0.72	kJ/mol	61.0604 ± 0.0017	268728-75-2*3
2-Hydrotrioxy cation		1298.2	1291.5	± 1.5	kJ/mol	49.00559 ± 0.00090	74241-49-90
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
(E)-Diazene cation		1132.49	1125.55	± 0.64	kJ/mol	30.02881 ± 0.00020	59952-06-6*0
Dihydrogen fluoride anion		133.2	131.9	± 1.6	kJ/mol	21.01483 ± 0.00014	117339-92-1*1
Cyanate		-221.15	-221.37	± 0.53	kJ/mol	42.01739 ± 0.00086	661-20-1*0
Oxazirinyl		450.1	450.9	± 1.5	kJ/mol	42.01684 ± 0.00086	228850-18-8*0
(Z)-Diazene	$[H]/N=N\[H]$	228.83	221.69	± 0.63	kJ/mol	30.02936 ± 0.00020	15626-42-3*0
2-Propene-1,2-diol		-295.4	-314.9	± 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		-202.9	-218.2	± 1.5	kJ/mol	73.0706 ± 0.0025	54668-31-4*1
(Acetyloxy)methyl		-200.2	-213.9	± 1.5	kJ/mol	73.0706 ± 0.0025	2887-49-2*1
Glyoxal		-207.76	-213.32	± 0.55	kJ/mol	58.0361 ± 0.0017	107-22-2*0
Chlorine fluoride cation		1165.52	1165.70	± 0.49	kJ/mol	54.45055 ± 0.00090	12432-44-9*0
Dimethylmethyleneammonium		697.1	672.1	± 1.3	kJ/mol	58.1018 ± 0.0025	28149-27-1*0
2-Methanidylidynehydrazin-2-ium-1-ide		281.9	279.1	± 1.4	kJ/mol	41.03267 ± 0.00082	947408-74-42
2-Methanidylidynehydrazin-2-ium-1-ide		518.6	516.1	± 1.6	kJ/mol	41.03267 ± 0.00082	947408-74-412
Trioxidaniumyl		925.6	916.4	± 1.5	kJ/mol	50.01353 ± 0.00091	161321-37-5*2
Isocyanamide		328.5	322.6	± 1.5	kJ/mol	42.04006 ± 0.00082	4702-38-9*0
Trichloromethide		-123.2	-122.7	± 2.0	kJ/mol	118.3693 ± 0.0028	14478-07-0*0
Fluorohydrochlorine cation		975.3	972.3	± 2.0	kJ/mol	55.45849 ± 0.00090	70110-64-4*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
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			-61.16	± 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
Hydrogen difluoride cation		1174.3	1171.3	± 1.5	kJ/mol	39.004198 ± 0.000070	126950-54-70
Bromodichloromethane		-34.9	-46.6	± 1.2	kJ/mol	163.8280 ± 0.0022	75-27-4*0
Difluorodibromomethane		-360.2	-378.2	± 1.3	kJ/mol	209.8155 ± 0.0022	75-61-6*0
Dichlorodibromomethane		27.7	11.8	± 1.3	kJ/mol	242.7241 ± 0.0028	594-18-3*0
Difluorobromomethane		-411.39	-424.59	± 0.46	kJ/mol	130.9194 ± 0.0013	1511-62-2*0
1,2-Difluoroethane		-434.36	-447.78	± 0.80	kJ/mol	66.0500 ± 0.0016	624-72-6*0
Hydroxyaminiumyl		1161.2	1158.2	± 1.4	kJ/mol	31.01353 ± 0.00032	63559-88-6*0
Fluoro(fluorooxy)methylene		-37.5	-39.1	± 1.4	kJ/mol	66.00691 ± 0.00085	479587-30-9*1
Peroxychlorous acid		95.4	89.4	± 2.0	kJ/mol	84.4588 ± 0.0013	177778-92-6*1
Chlorine chlorite		168.6	166.2	± 1.3	kJ/mol	102.9042 ± 0.0019	105206-44-8*3
Benzenium		887.8	867.7	± 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
Hydrogen fluoride			-334.70	± 0.15	kJ/mol	20.006343 ± 0.000070	7664-39-3*800
Benzylium		929.72	910.22	± 0.55	kJ/mol	91.1299 ± 0.0056	6711-19-9*0
Hydroxyamidogen		123.3	116.7	± 1.7	kJ/mol	32.02202 ± 0.00034	13940-32-4*2
Hydroxyaminylium		1019.5	1012.3	± 2.5	kJ/mol	32.02147 ± 0.00034	66097-71-0*1
Pentalene		389.9	373.6	± 1.4	kJ/mol	102.1332 ± 0.0064	250-25-9*0
Anisole		-45.88	-70.73	± 0.64	kJ/mol	108.1378 ± 0.0056	100-66-3*0
Benzoyl chloride			-157.10	± 0.26	kJ/mol	140.5667 ± 0.0057	98-88-4*500
Benzoyl chloride		-89.5	-104.8	± 1.2	kJ/mol	140.5667 ± 0.0057	98-88-4*0
Chlorosyl hydride		141.9	139.0	± 1.7	kJ/mol	52.46004 ± 0.00095	71572-35-5*0
Chlorine difluoride cation		998.9	996.7	± 1.7	kJ/mol	73.44896 ± 0.00090	32629-46-2*0
Hexafluorobenzene		-942.57	-947.57	± 0.87	kJ/mol	186.0546 ± 0.0048	392-56-3*0
Chlorobenzene cation		942.59	928.66	± 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	310.6	± 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	317.8	± 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		521.4	501.0	± 1.2	kJ/mol	59.0865 ± 0.0025	5131-95-30
1-Hydroxypropyl		-55.3	-73.0	± 1.1	kJ/mol	59.0871 ± 0.0025	5723-77-3*0
1,3-Butadien-2-ol		-53.4	-70.3	± 1.5	kJ/mol	70.0898 ± 0.0032	59120-04-6*11
Cyclopropanone		30.63	19.20	± 0.96	kJ/mol	56.0633 ± 0.0024	5009-27-8*0
Aquachlorine cation		821.9	815.1	± 1.8	kJ/mol	53.46743 ± 0.00096	142599-65-3*0
2-Formylethen-1-ide		27.3	20.6	± 2.5	kJ/mol	55.0559 ± 0.0024	135924-69-5*11
Ethenedione		14.5	17.0	± 1.2	kJ/mol	56.0202 ± 0.0017	4363-38-6*0
Formaldonitrone		78.3	67.1	± 1.4	kJ/mol	45.04066 ± 0.00088	67353-84-8*0
2-Cyclopropen-1-imine		401.9	394.2	± 1.4	kJ/mol	53.0627 ± 0.0024	31589-17-0*0
1-Isocyanovinyl		519.1	517.3	± 1.4	kJ/mol	52.0547 ± 0.0024	321850-14-0*0
Vinylvinylidene		494.1	488.8	± 1.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*2
But-1-en-3-yn-1-ide		422.3	421.0	± 1.3	kJ/mol	51.0672 ± 0.0032	119611-65-3*1
Tetrahedryl anion		634.5	630.7	± 1.6	kJ/mol	51.0672 ± 0.0032	138805-00-2*0
Silicon carbide		740.4	745.3	± 2.4	kJ/mol	40.09620 ± 0.00085	409-21-2*0
Silicon carbide		-70.6	-71.6	± 1.5	kJ/mol	40.09620 ± 0.00085	409-21-2*501
Trifluorosilylium		-111.8	-114.7	± 1.9	kJ/mol	85.08016 ± 0.00030	38192-99-3*0
Silanide		69.3	63.7	± 1.4	kJ/mol	31.10987 ± 0.00037	15807-96-2*0
Bifluoride		-68.0	-67.6	± 1.6	kJ/mol	39.005295 ± 0.000070	18130-74-01
Dimethylsilanone		-237.4	-252.9	± 2.3	kJ/mol	74.1539 ± 0.0017	47956-45-6*0
Ethylsilane		-12.8	-35.3	± 1.8	kJ/mol	60.1704 ± 0.0017	2814-79-1*0
Hydroxysilyl anion		-219.2	-227.2	± 2.1	kJ/mol	47.10927 ± 0.00047	78450-47-2*1
Triprismane		576.0	556.7	± 1.3	kJ/mol	78.1118 ± 0.0048	650-42-0*0
Propargylallene		431.4	419.8	± 1.4	kJ/mol	78.1118 ± 0.0048	33142-15-3*3
Dioxyamidogen		240.5	233.8	± 1.8	kJ/mol	47.01348 ± 0.00061	71843-95-3*2
Biphenyl		206.9	178.8	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*0
Diacetylide		460.95	465.99	± 0.96	kJ/mol	49.0513 ± 0.0032	59012-21-4*0
Sulfur trioxide anion		-604.4	-610.1	± 2.8	kJ/mol	80.0647 ± 0.0061	12210-38-7*0
Sulfinyl hydride		-40.7	-47.6	± 1.2	kJ/mol	50.0813 ± 0.0060	25540-60-7*0
Sulfuric acid			-886.52	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*906
Bisulfite cation		554.0	545.2	± 1.3	kJ/mol	81.0716 ± 0.0061	43637-78-1*0
Thioformaldehyde		121.3	117.6	± 2.0	kJ/mol	46.0926 ± 0.0061	865-36-1*2
Oxofluoronium		1342.66	1342.61	± 0.80	kJ/mol	34.99725 ± 0.00030	12763-67-6*0
Dimethylsulfoxide		-131.92	-150.56	± 0.57	kJ/mol	78.1344 ± 0.0062	67-68-5*0
Carbon disulfide		115.91	116.70	± 0.68	kJ/mol	76.1427 ± 0.0120	75-15-0*0
Hydrogen atom		-18.9	-21.4	± 4.3	kJ/mol	1.007940 ± 0.000070	12385-13-6*1002001
Hydrogen atom		-30.3	-32.7	± 5.3	kJ/mol	1.007940 ± 0.000070	12385-13-6*1002004
Vinylidene		610.65	610.36	± 0.39	kJ/mol	26.0373 ± 0.0016	2143-69-3*1
Iminomethide		237.4	233.6	± 1.8	kJ/mol	28.03387 ± 0.00082	90623-30-6*1
Cyanogen iodide anion		86.5	88.9	± 8.1	kJ/mol	152.92246 ± 0.00080	1356929-44-6*0
Methanol		-235.16	-238.50	± 0.14	kJ/mol	32.04186 ± 0.00090	67-56-1*500
Dioxygen		94.410	94.383	± 0.000	kJ/mol	31.99880 ± 0.00060	7782-44-7*2
Formaldehyde cation		944.861	941.240	± 0.096	kJ/mol	30.02543 ± 0.00087	54288-05-0*0
Isoformyl anion		267.4	268.0	± 1.6	kJ/mol	29.01859 ± 0.00086	81747-63-9*2
1,3-Propanediyl		358.7	343.7	± 1.4	kJ/mol	42.0797 ± 0.0024	32458-33-6*22
Allene cation		1132.22	1125.07	± 0.22	kJ/mol	40.0633 ± 0.0024	65812-77-3*0
Triiodide		-254.3	-257.5	± 3.4	kJ/mol	380.713959 ± 0.000090	14900-04-0*0
2-Propenylidene		417.5	410.0	± 1.5	kJ/mol	40.0639 ± 0.0024	19527-08-3*11
2-Propenylidene		452.68	445.55	± 0.90	kJ/mol	40.0639 ± 0.0024	19527-08-3*2
Fluorosyl fluoride		192.8	193.3	± 2.3	kJ/mol	53.99621 ± 0.00030	86825-57-2*1
Oxochloronium		1150.86	1150.70	± 0.66	kJ/mol	51.45155 ± 0.00095	12301-79-0*0
Cycloprop-1-enylide		373.7	369.2	± 1.7	kJ/mol	39.0565 ± 0.0024	80251-77-0*0
2-Cyclopropen-1-ylium-1-yl		1381.9	1380.8	± 1.1	kJ/mol	38.0474 ± 0.0024	85398-75-0*0
Propynylidene		597.9	599.6	± 1.2	kJ/mol	38.0480 ± 0.0024	67152-18-5*3
Propenediylidene		796.3	797.5	± 1.4	kJ/mol	38.0480 ± 0.0024	60731-11-5*0
n-Butylium		827.6	803.3	± 1.1	kJ/mol	57.1137 ± 0.0033	25453-90-1*0
Dibromide		-197.0	-211.1	± 2.3	kJ/mol	159.8085 ± 0.0020	12595-70-9*0
Peroxychlorite		-34.4	-34.4	± 2.0	kJ/mol	83.4514 ± 0.0013	852472-63-0*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	± 1.3	kJ/mol	53.0830 ± 0.0032	64480-63-3*0
1-Chloro ozone		226.3	223.0	± 2.3	kJ/mol	83.4509 ± 0.0013	141801-66-3*101
1,3-Butadienyl anion		265.3	255.0	± 1.5	kJ/mol	53.0830 ± 0.0032	65114-68-3*0
Fluoronium		1490.1	1491.4	± 1.9	kJ/mol	21.01373 ± 0.00014	12206-67-6*1
Trihydrogen dioxide anion		-487.4	-495.7	± 1.1	kJ/mol	35.02317 ± 0.00064	12501-19-8*0
n-Decane		-192.12	-248.87	± 0.79	kJ/mol	142.2817 ± 0.0081	124-18-5*0
Ethyloxoniumyl		783.4	766.4	± 1.7	kJ/mol	46.0679 ± 0.0017	34480-55-2*0
1-Hydroxyethyl		-41.35	-54.82	± 0.92	kJ/mol	45.0605 ± 0.0017	2348-46-1*2
1-Hydroxyethylium		608.88	594.46	± 0.38	kJ/mol	45.0600 ± 0.0017	18682-96-7*0
2-Hydroxyethylium		1019.3	1006.5	± 1.5	kJ/mol	45.0600 ± 0.0017	38607-31-7*3
Ethyloxoniumylidene		988.7	975.0	± 1.5	kJ/mol	45.0600 ± 0.0017	54387-07-4*0
Acetaldehyde cation		832.10	822.12	± 0.23	kJ/mol	44.0520 ± 0.0017	36505-03-0*0
1-Hydroxyethylidene		185.0	175.5	± 1.4	kJ/mol	44.0526 ± 0.0017	30967-49-8*1
Methoxymethylene		245.4	235.9	± 1.4	kJ/mol	44.0526 ± 0.0017	19527-10-7*1
1-Hydroxyethenyl		121.30	114.91	± 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		-48.42	-47.49	± 0.82	kJ/mol	41.0293 ± 0.0016	64066-01-9*0
Dicarbon monoxide anion		154.20	157.84	± 0.83	kJ/mol	40.0213 ± 0.0016	87191-88-6*0
Dicarbon monoxide		440.24	444.57	± 0.83	kJ/mol	40.0208 ± 0.0016	12071-23-7*2
COC vdW		726.3	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		95.34	92.86	± 0.73	kJ/mol	42.0367 ± 0.0016	32038-79-2*0
Ethynol		400.1	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
Dihydrogen fluoride anion		-257.0	-260.1	± 1.9	kJ/mol	21.01483 ± 0.00014	117339-92-12
1-Hydroperoxyethylium		841.4	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
Hydrogen chloride			-166.989	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*800
Chloride			-166.989	± 0.023	kJ/mol	35.45325 ± 0.00090	16887-00-6*800
Isocyanic acid cation		1003.02	1000.35	± 0.49	kJ/mol	43.02423 ± 0.00086	444010-28-0*0
Fulminic acid cation		1215.7	1212.9	± 1.3	kJ/mol	43.02423 ± 0.00086	114766-65-3*0
1,2-Ethenediol		-253.9	-266.3	± 1.3	kJ/mol	60.0520 ± 0.0017	1571-60-4*2
Acetyl chloride			-272.08	± 0.39	kJ/mol	78.4973 ± 0.0019	75-36-5*500
Methyl formate			-388.54	± 0.67	kJ/mol	60.0520 ± 0.0017	107-31-3*500
Ethyl formate		-355.4	-374.5	± 1.4	kJ/mol	74.0785 ± 0.0025	109-94-4*2
Acetoxy		-182.13	-190.96	± 0.80	kJ/mol	59.0440 ± 0.0017	13799-69-4*1
2-Methoxy-2-oxoethyl		-172.9	-188.0	± 1.7	kJ/mol	73.0706 ± 0.0025	54668-31-4*2
Dioxymethylidyne		299.8	301.1	± 1.7	kJ/mol	44.00950 ± 0.00100	791121-04-5*0
(Acetyloxy)methyl		-173.9	-186.9	± 1.7	kJ/mol	73.0706 ± 0.0025	2887-49-2*2
Hydroxyoxoethenyl		24.5	22.8	± 1.7	kJ/mol	57.0281 ± 0.0017	702699-39-6*0
Fluorochlorate		-256.03	-255.43	± 0.81	kJ/mol	54.45165 ± 0.00090	12272-56-9*0
Hydrogen difluoride		-187.4	-187.1	± 1.6	kJ/mol	39.004746 ± 0.000070	12528-21-1*2
Azanylium		1266.56	1264.49	± 0.11	kJ/mol	16.02207 ± 0.00016	15194-15-7*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
Hydrogen fluoride			-321.69	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*815
Cyanoaminylium		1363.1	1360.8	± 1.3	kJ/mol	41.03157 ± 0.00082	205443-18-1*1
Cyanoamidogen anion		69.74	66.73	± 0.72	kJ/mol	41.03267 ± 0.00082	67131-47-9*0
Diazomethylium		1395.8	1394.1	± 1.3	kJ/mol	41.03157 ± 0.00082	271249-81-1*1
Diazomethanide		305.19	302.10	± 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		1563.1	1561.5	± 1.5	kJ/mol	41.03157 ± 0.00082	947408-73-31
Diiodide		-178.13	-180.72	± 0.48	kJ/mol	253.809489 ± 0.000060	12190-71-5*0
Nitrilomethylimidogen		728.7	725.7	± 2.4	kJ/mol	41.03212 ± 0.00082	324529-58-0*1
Diazenide		175.6	176.7	± 1.6	kJ/mol	29.02197 ± 0.00016	71004-29-0*100
Trifluoromethide		-637.5	-639.3	± 1.8	kJ/mol	69.00646 ± 0.00080	54128-17-5*0
Methanediimine		153.1	146.5	± 1.3	kJ/mol	42.04006 ± 0.00082	151-51-9*0
Tetrachloromethane		-104.63	-124.04	± 0.42	kJ/mol	153.8215 ± 0.0037	56-23-5*500
Dichloromethylene anion		75.98	78.26	± 0.77	kJ/mol	82.9166 ± 0.0020	118364-73-1*0
Dichloromethylium		895.4	892.2	± 1.2	kJ/mol	83.9235 ± 0.0020	56932-33-3*0
Dichloromethide		-40.7	-42.5	± 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		346.24	346.55	± 0.89	kJ/mol	48.4713 ± 0.0012	2108-20-5*1
1,2-Dichloroethane			-165.65	± 0.56	kJ/mol	98.9586 ± 0.0024	107-06-2*500
1,1-Dichloroethane			-163.75	± 0.48	kJ/mol	98.9586 ± 0.0024	75-34-3*500
Chlorosyl chloride		134.5	133.2	± 1.4	kJ/mol	86.9048 ± 0.0018	86825-56-1*0
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
Chloroform			-130.90	± 0.43	kJ/mol	119.3767 ± 0.0028	67-66-3*590
Chlorodibromomethane		21.8	3.0	± 3.5	kJ/mol	208.2793 ± 0.0023	124-48-1*0
2-Cyclopropyn-1-ylidene		898.4	905.3	± 1.5	kJ/mol	36.0321 ± 0.0024	102508-15-6*1
Bromochloromethane		-28.2	-42.3	± 1.3	kJ/mol	129.3833 ± 0.0016	74-97-5*0
Ammonium nitrate		-350.20	-365.16	± 0.18	kJ/mol	80.04344 ± 0.00095	6484-52-2*500
Fluoromethylene		148.42	148.70	± 0.43	kJ/mol	32.01704 ± 0.00080	13453-52-6*0
2-Cyclopropyn-1-ylium-1-yl		1939.2	1947.1	± 1.3	kJ/mol	36.0316 ± 0.0024	154702-35-9*0
Ethyl iodide		8.71	-7.17	± 0.48	kJ/mol	155.9656 ± 0.0016	75-03-6*0
Ammonia			-80.885	± 0.053	kJ/mol	17.03056 ± 0.00022	7664-41-7*1000
Chlorohydrofluorine cation		1000.8	998.1	± 2.1	kJ/mol	55.45849 ± 0.00090	70110-63-3*0
1,2-Dibromoacetylene		333.0	322.1	± 2.3	kJ/mol	183.8294 ± 0.0026	624-61-3*0
Fluoro(fluorooxy)methylene		-97.5	-95.6	± 1.6	kJ/mol	66.00691 ± 0.00085	479587-30-9*101
Fluorooxomethylium		724.9	724.6	± 1.2	kJ/mol	47.00795 ± 0.00085	38264-00-5*0
Fluoroisoformyl		-37.8	-32.4	± 1.6	kJ/mol	47.00850 ± 0.00085	1871-24-50
Benzene cation		992.62	976.15	± 0.21	kJ/mol	78.1113 ± 0.0048	34504-50-2*0
1,3-Butadiyne-1,4-diyl		1052.28	1062.26	± 0.64	kJ/mol	48.0428 ± 0.0032	78015-07-3*0
Benzoic acid		-367.33	-384.74	± 0.17	kJ/mol	122.1213 ± 0.0056	65-85-0*500
2,3-Dimethylbenzaldehyde		-65.7	-93.8	± 2.4	kJ/mol	134.1751 ± 0.0072	5779-93-1*0
(2,3-dimethylphenyl)oxomethyl		83.2	60.5	± 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
2-Oxopropylium		784.8	771.0	± 1.7	kJ/mol	57.0707 ± 0.0024	54088-52-7*0
Azidonitrene		692.1	687.5	± 1.4	kJ/mol	56.02696 ± 0.00028	147363-92-6*2
2,3-Butanedione		-310.70	-327.26	± 0.62	kJ/mol	86.0892 ± 0.0033	431-03-8*0
1,2-Dibromoethane		-11.5	-38.3	± 1.2	kJ/mol	187.8612 ± 0.0026	106-93-4*0
Dimethylketene		-73.4	-88.2	± 1.2	kJ/mol	70.0898 ± 0.0032	598-26-5*0
2-Methyloxirene		344.1	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	± 1.8	kJ/mol	44.03272 ± 0.00087	206442-92-4*1
Hydroxyimidogen		217.91	215.03	± 0.77	kJ/mol	31.01408 ± 0.00032	35337-59-8*0
Hydrogen fluoride			-321.84	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*818
1-Isocyanoethylidene		545.6	540.7	± 1.6	kJ/mol	53.0627 ± 0.0024	498544-34-61
3-Imino-2-propen-1-ylidene		571.9	566.9	± 1.6	kJ/mol	53.0627 ± 0.0024	916765-05-4*21
2-(Methylidyneamino)ethenyl		634.5	629.8	± 1.6	kJ/mol	53.0627 ± 0.0024	123416-74-0*21
Azete		469.5	461.4	± 1.5	kJ/mol	53.0627 ± 0.0024	287-24-1*0
Nitronium		961.80	958.24	± 0.20	kJ/mol	46.00499 ± 0.00060	14522-82-8*0
2-Cyanovinylium		1517.3	1515.1	± 1.8	kJ/mol	52.0542 ± 0.0024	85398-67-0*21
2-Cyanovinyl anion		263.8	260.8	± 1.8	kJ/mol	52.0553 ± 0.0024	85398-67-02
2-Isocyanovinyl		543.2	541.3	± 1.7	kJ/mol	52.0547 ± 0.0024	225798-14-1*1
Nitrous acid		-71.36	-77.72	± 0.26	kJ/mol	47.01348 ± 0.00061	7782-77-6*2
3-Oxo-1,2-propadienylidene		330.4	336.4	± 1.8	kJ/mol	52.0315 ± 0.0024	11127-17-6*0
Dioxygenyl ion monohydrate		828.7	821.6	± 2.1	kJ/mol	50.01353 ± 0.00091	11083-61-7*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
Dihydrogen cation		1488.364	1488.480	± 0.000	kJ/mol	2.01533 ± 0.00014	12184-90-6*0
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		134.0	111.0	± 1.4	kJ/mol	80.1277 ± 0.0048	96-38-8*0
Fulvenone		117.3	107.1	± 1.6	kJ/mol	92.0954 ± 0.0048	4727-22-4*0
Silicon cation		1236.84	1240.97	± 0.56	kJ/mol	28.08495 ± 0.00030	14067-07-3*0
Disilicon		587.4	591.3	± 1.6	kJ/mol	56.17100 ± 0.00060	12597-35-2*0
Ethylene cation		1075.22	1068.01	± 0.11	kJ/mol	28.0526 ± 0.0016	34470-02-5*0
Fluorosilyliumylidene		648.1	649.3	± 1.7	kJ/mol	47.08335 ± 0.00030	12518-09-1*0
Disiloxane		-330.3	-347.3	± 2.3	kJ/mol	78.21804 ± 0.00079	13597-73-4*0
Iodotrimethylsilane		-189.6	-214.4	± 2.1	kJ/mol	200.0935 ± 0.0025	16029-98-4*0
Peroxyimidogen		405.4	403.4	± 1.9	kJ/mol	46.00554 ± 0.00060	60488-31-50
1,2,3,5-Hexatetraene		391.7	380.0	± 1.6	kJ/mol	78.1118 ± 0.0048	60239-33-0*1
1,2,3-Pentatriene		302.6	290.3	± 1.4	kJ/mol	66.1011 ± 0.0040	62018-46-6*0
(Z)-1-Methylallyl	$C/C=C\[CH2]$	154.67	137.28	± 0.99	kJ/mol	55.0984 ± 0.0032	98705-00-1*0
Oxadiazirene		351.7	349.9	± 1.7	kJ/mol	44.01288 ± 0.00033	227934-45-4*0
Anthracene		256.05	227.04	± 0.92	kJ/mol	178.2292 ± 0.0112	120-12-7*0
Hydrogen fluoride			-321.90	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*820
Helium hydride cation		1350.148	1348.258	± 0.000	kJ/mol	5.009993 ± 0.000070	17009-49-3*0
Hydroxydioxonitrate		-193.2	-197.5	± 2.4	kJ/mol	63.01343 ± 0.00091	58875-09-5*0
NON		545.5	542.6	± 1.7	kJ/mol	44.01288 ± 0.00033	227934-46-5*0
Hydrosulfide		-80.53	-80.53	± 0.18	kJ/mol	33.0745 ± 0.0060	15035-72-0*0
Sulfuric acid			-895.15	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*898
Dimethyl sulfide		-63.11	-64.72	± 0.33	kJ/mol	62.1350 ± 0.0062	75-18-3*500
(Methylthio)methyl		149.5	137.8	± 1.4	kJ/mol	61.1271 ± 0.0062	31533-72-9*0
Hydrogen atom		-22.3	-25.6	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1001001
Hydrogen atom		-33.4	-36.7	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1001004
Propylidene		355.7	340.4	± 2.0	kJ/mol	42.0797 ± 0.0024	6700-78-3*21
Hydrogen peroxide cation		931.03	924.17	± 0.98	kJ/mol	34.01413 ± 0.00062	12325-10-9*2
Cyclopropylium		1101.58	1088.77	± 0.73	kJ/mol	41.0713 ± 0.0024	1724-43-2*200
Propyne cation		1192.64	1186.91	± 0.38	kJ/mol	40.0633 ± 0.0024	34526-53-9*0
Cyclopropylidene		544.8	535.9	± 1.5	kJ/mol	40.0639 ± 0.0024	2143-70-6*2
Nitric acid		-178.98	-173.25	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*500
Propynylidene cation		1409.62	1412.17	± 0.83	kJ/mol	38.0474 ± 0.0024	75123-91-0*0
Propynylidene		597.6	599.4	± 1.1	kJ/mol	38.0480 ± 0.0024	67152-18-5*4
Propadienylidenide		381.19	382.10	± 0.41	kJ/mol	38.0485 ± 0.0024	109292-49-1*0
1,2-Propadien-1-ylium-1-yl		1561.6	1562.8	± 1.4	kJ/mol	38.0474 ± 0.0024	110714-00-6*0
Trichloride		-328.5	-327.6	± 1.3	kJ/mol	106.3586 ± 0.0027	18434-33-8*0
Chlorine oxide peroxide		226.5	227.4	± 2.5	kJ/mol	83.4509 ± 0.0013	141801-67-4*100
n-Pentane		-155.83	-172.80	± 0.30	kJ/mol	72.1488 ± 0.0041	109-66-0*500
iso-Pentane			-178.21	± 0.39	kJ/mol	72.1488 ± 0.0041	78-78-4*500
neo-Pentane			-189.53	± 0.38	kJ/mol	72.1488 ± 0.0041	463-82-1*500
Cyclopentane			-104.65	± 0.38	kJ/mol	70.1329 ± 0.0041	287-92-3*590
1-Chloro ozone anion		-109.0	-111.5	± 2.2	kJ/mol	83.4514 ± 0.0013	224299-15-4*3
2-Methylpentane		-134.49	-173.75	± 0.73	kJ/mol	86.1754 ± 0.0049	107-83-5*0
3-Methylpentane		-131.94	-171.45	± 0.76	kJ/mol	86.1754 ± 0.0049	96-14-0*0
2,3-Dimethylbutane		-136.54	-177.63	± 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		108.50	83.91	± 0.39	kJ/mol	82.1436 ± 0.0049	592-42-7*0
2-Hydroxyethyl		-5.8	-18.2	± 1.5	kJ/mol	45.0605 ± 0.0017	4422-54-2*3
Ethoxy		1.38	-12.05	± 0.42	kJ/mol	45.0605 ± 0.0017	2154-50-9*0
Nitrosyl fluoride		-85.47	-87.84	± 0.79	kJ/mol	49.00454 ± 0.00031	7789-25-5*0
Nitrosyl nitrate		70.7	62.3	± 1.8	kJ/mol	92.0111 ± 0.0012	15969-55-80
Dihydrooxooxygen cation		994.8	988.1	± 1.6	kJ/mol	34.01413 ± 0.00062	177329-59-8*0
Trichlorine cation		1056.6	1055.5	± 1.4	kJ/mol	106.3576 ± 0.0027	33088-85-6*2
1-Chloro ozone anion		-66.9	-68.8	± 2.1	kJ/mol	83.4514 ± 0.0013	224299-15-4*1
Iminomethide		252.7	248.9	± 1.8	kJ/mol	28.03387 ± 0.00082	90623-30-6*2
Dicarbon monoxide cation		1434.0	1439.0	± 2.1	kJ/mol	40.0203 ± 0.0016	12287-08-0*0
C=O-C cation		1816.9	1820.9	± 2.0	kJ/mol	40.0203 ± 0.0016	83483-98-1*2
Hydrogen cyanide cation		1442.53	1442.07	± 0.20	kJ/mol	27.02483 ± 0.00081	12601-62-6*0
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
Methanediol		-378.49	-391.58	± 0.62	kJ/mol	48.0413 ± 0.0010	463-57-0*0
Bromine dioxide		165.6	156.0	± 2.1	kJ/mol	111.9028 ± 0.0012	21255-83-4*0
Perchloryloxy		248.4	240.8	± 1.8	kJ/mol	99.4503 ± 0.0015	12133-63-0*0
Ethoxyoxoniumylidene		962.4	945.9	± 1.7	kJ/mol	61.0594 ± 0.0017	268728-77-4*22
2-Hydroperoxyethylium		999.8	988.9	± 1.7	kJ/mol	61.0594 ± 0.0017	84824-62-41
Dihydrogen fluoride anion		-61.9	-60.5	± 3.2	kJ/mol	21.01483 ± 0.00014	117339-92-1*2
Nitrilomethylium		1783.14	1786.62	± 0.48	kJ/mol	26.01689 ± 0.00080	12539-57-0*0
Formic acid anion		-241.2	-246.9	± 1.9	kJ/mol	46.0259 ± 0.0010	19066-82-1*2
Dioxirane cation		1050.8	1043.1	± 2.0	kJ/mol	46.0248 ± 0.0010	232262-10-1*0
Dioxymethyl cation		1074.8	1068.4	± 1.7	kJ/mol	46.0248 ± 0.0010	232262-11-2*0
Perchlorate		-263.9	-272.8	± 2.1	kJ/mol	99.4508 ± 0.0015	14797-73-0*0
Dioxymethylene		341.8	339.8	± 3.0	kJ/mol	45.0174 ± 0.0010	438586-67-5*2
OH-CO vdW complex		-80.50	-76.78	± 0.85	kJ/mol	45.0174 ± 0.0010	2564-85-4100
CO-HO vdW complex		-77.5	-73.3	± 1.3	kJ/mol	45.0174 ± 0.0010	2564-84-3100
Cyanato cation		1261.53	1262.03	± 0.58	kJ/mol	42.01629 ± 0.00086	17247-99-3*0
Nitrosomethyliumylidene		1509.8	1510.9	± 1.7	kJ/mol	42.01629 ± 0.00086	67197-19-7*0
Fulminate		59.6	59.8	± 1.7	kJ/mol	42.01739 ± 0.00086	28269-67-2*0
Fluorosyl fluoride anion		-147.1	-146.8	± 3.0	kJ/mol	53.99675 ± 0.00030	86825-57-22
(E)-Diazene anion		265.5	258.7	± 2.0	kJ/mol	30.02991 ± 0.00020	59952-06-60
(Z)-Diazene cation	$[H]/N=[N+]\[H]$	1157.0	1150.2	± 1.3	kJ/mol	30.02881 ± 0.00020	86631-37-0*0
Trioxodinitrate anion		-104.2	-107.5	± 1.9	kJ/mol	76.01223 ± 0.00091	194856-62-7*100
Glyoxal		-189.32	-194.76	± 0.71	kJ/mol	58.0361 ± 0.0017	107-22-2*2
Ethynediol		-18.3	-22.0	± 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
1-Hydrazinylium-1-yl		1143.4	1136.4	± 1.4	kJ/mol	30.02881 ± 0.00020	63986-30-1*0
Bifluoride		-705.22	-709.07	± 0.35	kJ/mol	39.005295 ± 0.000070	18130-74-0*0
Ethylimidogen		306.1	291.5	± 2.0	kJ/mol	43.0678 ± 0.0016	27770-44-1*0
Diisocyanogen		610.9	613.2	± 1.7	kJ/mol	52.0349 ± 0.0016	78800-21-2*0
Cyanoamidogen anion		391.7	389.5	± 1.8	kJ/mol	41.03267 ± 0.00082	67131-47-9*12
Fluorodioxidenium		1221.9	1219.5	± 2.0	kJ/mol	50.99665 ± 0.00060	139584-95-5*0
Trioxidanyl		26.35	23.08	± 0.19	kJ/mol	49.00614 ± 0.00090	12500-78-6*2
Sulfuryl dichloride		-348.06	-354.22	± 0.75	kJ/mol	134.9702 ± 0.0063	7791-25-5*0
Diazirenide		454.9	452.2	± 1.5	kJ/mol	41.03267 ± 0.00082	130614-84-5*0
Cyanamide cation		1158.8	1152.4	± 1.5	kJ/mol	42.03951 ± 0.00082	148556-23-4*0
Diazenide		347.5	344.6	± 1.6	kJ/mol	29.02197 ± 0.00016	71004-29-0*1
3-Diaziridinylidene		521.8	515.0	± 1.5	kJ/mol	42.04006 ± 0.00082	85513-79-7*1
Diazomethylene		577.9	578.6	± 2.2	kJ/mol	40.02418 ± 0.00081	2468-81-7*0
Hydrofluorate ion		-75.6	-75.1	± 1.8	kJ/mol	20.006892 ± 0.000070	37249-79-9*0
Dichloromethylene		313.98	315.19	± 0.90	kJ/mol	82.9161 ± 0.0020	1605-72-7*1
Iodine		198.109	197.709	± 0.0021	kJ/mol	126.904470 ± 0.000030	14362-44-8*2
Aminyliumyl		1659.04	1659.96	± 0.23	kJ/mol	15.014131 ± 0.000099	19067-62-0*0
Trioxidanylium		1085.2	1078.9	± 1.4	kJ/mol	49.00559 ± 0.00090	74241-49-9*2
Chlorite		-105.51	-107.69	± 0.37	kJ/mol	67.4520 ± 0.0011	14998-27-7*0
Ethynylene cation		1964.98	1971.56	± 0.40	kJ/mol	24.0209 ± 0.0016	12595-79-8*0
Chloromethyliumyl		1207.4	1207.7	± 2.0	kJ/mol	48.4708 ± 0.0012	89877-51-0*0
Chloromethylene anion		203.54	204.35	± 0.94	kJ/mol	48.4719 ± 0.0012	75466-08-9*0
Chlorohydroxymethyl		-46.0	-51.6	± 2.0	kJ/mol	65.4787 ± 0.0012	147139-06-8*2
Deuterium atom cation		1532.210	1534.123	± 0.000	kJ/mol	2.01355319809 ± 0.00000000040	14464-47-2*0
1,1,1,2-Tetrachloroethane			-193.5	± 1.1	kJ/mol	167.8481 ± 0.0039	630-20-6*500
Hexachloroethane			-214.1	± 2.8	kJ/mol	236.7376 ± 0.0056	67-72-1*500
Hydroxylamine		-15.4	-25.9	± 1.4	kJ/mol	33.02996 ± 0.00037	7803-49-8*2
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	$C(\Cl)=C/Cl$	5.64	0.22	± 0.55	kJ/mol	96.9427 ± 0.0024	156-60-5*0
Hydroxylamine cation		857.7	847.9	± 1.6	kJ/mol	33.02941 ± 0.00037	62675-55-2*0
Fluorodioxidanide		-256.8	-256.1	± 1.9	kJ/mol	50.99775 ± 0.00060	23553-17-5*0
Dioxofluorine		523.9	523.2	± 1.0	kJ/mol	50.99720 ± 0.00060	175861-93-5*0
Fluorochlorobromomethane		-218.2	-230.9	± 4.9	kJ/mol	147.3737 ± 0.0016	593-98-6*0
Fluorine atom cation		1758.302	1760.600	± 0.017	kJ/mol	18.99785462 ± 0.00000050	14701-13-4*0
Fluoromethyliumyl		1116.6	1116.9	± 1.7	kJ/mol	32.01649 ± 0.00080	89877-52-1*0
Fluoromethylene anion		95.96	96.49	± 0.61	kJ/mol	32.01759 ± 0.00080	71267-42-0*0
Trioxidaniumyl		935.3	926.3	± 1.5	kJ/mol	50.01353 ± 0.00091	161321-37-5*3
Polytetrafluoroethylene			-829.97	± 0.54	kJ/mol	100.0150 ± 0.0016	9002-84-0*591
Acetylene anion		356.9	356.7	± 1.9	kJ/mol	26.0378 ± 0.0016	50443-89-5*1
trans-1,2-Difluoroethene		-299.57	-306.01	± 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
Formyl fluoride		-405.1	-403.7	± 1.6	kJ/mol	47.00905 ± 0.00085	62227-71-8*0
Methyleneoxonium cation		827.8	818.3	± 1.7	kJ/mol	32.04131 ± 0.00090	177788-17-90
Fluoroisoformyl cation		1347.4	1349.5	± 1.9	kJ/mol	47.00795 ± 0.00085	1871-25-60
Nitrogen hydride oxide		71.2	60.0	± 1.5	kJ/mol	33.02996 ± 0.00037	38544-48-8*0
Aminooxy cation		945.96	938.83	± 0.76	kJ/mol	32.02147 ± 0.00034	51375-41-80
o-Benzyne cation		1392.2	1384.2	± 1.6	kJ/mol	76.0954 ± 0.0048	70220-84-7*0
m-Benzyne cation		1363.1	1354.6	± 1.5	kJ/mol	76.0954 ± 0.0048	121058-08-0*0
p-Benzyne		603.6	594.3	± 1.2	kJ/mol	76.0960 ± 0.0048	3355-34-8*1
1,3-Cycloheptadiene		123.62	94.51	± 0.78	kJ/mol	94.1543 ± 0.0056	4054-38-0*1
Tropylium		899.0	879.2	± 1.1	kJ/mol	91.1299 ± 0.0056	26811-28-9*0
Hydroxyaminylium		1048.5	1041.3	± 2.6	kJ/mol	32.02147 ± 0.00034	66097-71-0*2
Ammonium hydroxide		-360.45	-361.54	± 0.57	kJ/mol	35.04584 ± 0.00047	1336-21-6*500
Ammonium hydroxide			-362.836	± 0.061	kJ/mol	35.04584 ± 0.00047	1336-21-6*800
Hexafluorobenzene		-997.17	-983.38	± 0.87	kJ/mol	186.0546 ± 0.0048	392-56-3*500
Azidonitrene		660.8	657.7	± 1.6	kJ/mol	56.02696 ± 0.00028	147363-92-6*1
cis-1,2-Dibromoethene	$C(\Br)=C\Br$	121.3	100.8	± 2.0	kJ/mol	185.8453 ± 0.0026	590-11-4*0
1,1-Dibromoethane		-4.8	-31.8	± 1.8	kJ/mol	187.8612 ± 0.0026	557-91-5*0
Chlorine difluoride anion		-504.9	-505.8	± 1.9	kJ/mol	73.45005 ± 0.00090	16892-05-0*0
Hydroxyamidogen anion		90.7	84.8	± 2.8	kJ/mol	32.02257 ± 0.00034	66097-71-00
Ethane cation		1043.16	1029.15	± 0.59	kJ/mol	30.0685 ± 0.0017	34488-65-8*0
Chlorine difluoride		22.5	23.9	± 1.9	kJ/mol	73.44951 ± 0.00090	91483-78-2*0
Carbamoyl		74.1	67.6	± 2.7	kJ/mol	44.03272 ± 0.00087	2858-51-71
Formaldiminoxy		160.9	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
Hydroxymethylene cation		986.4	982.8	± 1.6	kJ/mol	30.02543 ± 0.00087	135395-06-1*2
Cyanoethynyl		715.7	722.2	± 1.1	kJ/mol	50.0388 ± 0.0024	62435-43-2*0
Hydroxymethylene cation		1482.1	1479.4	± 1.9	kJ/mol	30.02543 ± 0.00087	135395-06-1*3
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
2-Methylene-2H-azirine		404.3	396.9	± 1.7	kJ/mol	53.0627 ± 0.0024	110027-86-6*0
2-Cyanovinylium		1517.4	1515.3	± 1.8	kJ/mol	52.0542 ± 0.0024	85398-67-0*22
2-Cyanovinyl anion		266.2	263.3	± 1.8	kJ/mol	52.0553 ± 0.0024	85398-67-01
Aquacarbon		467.6	465.5	± 1.9	kJ/mol	30.02598 ± 0.00087	81434-73-3*102
2-Isocyanovinyl		544.6	542.7	± 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
Aquacarbon cation		1196.1	1193.0	± 1.7	kJ/mol	30.02543 ± 0.00087	81434-73-30
Isocyanomethylene		586.2	587.2	± 1.7	kJ/mol	39.0361 ± 0.0016	78694-65-2*2
3-Methylcycloprop-3-en-2-ylium-1-yl		1283.9	1277.4	± 1.5	kJ/mol	52.0740 ± 0.0032	185841-59-20
Vinylvinylidene cation		1429.8	1424.2	± 2.0	kJ/mol	52.0740 ± 0.0032	161054-20-2*1
1,2-Butadien-1-ylidene		511.8	506.3	± 2.0	kJ/mol	52.0746 ± 0.0032	119908-55-3*2
1-Buten-3-ynylium		1482.3	1479.8	± 1.4	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
Nitrous acid		-72.976	-78.633	± 0.078	kJ/mol	47.01348 ± 0.00061	7782-77-6*0
3-Methylene-1-cyclopropen-1-ylium		1398.7	1395.4	± 1.7	kJ/mol	51.0661 ± 0.0032	117469-28-0*2
Butyraldehyde		-185.30	-205.67	± 0.85	kJ/mol	72.1057 ± 0.0033	123-72-8*0
Chloroallene		181.8	175.2	± 1.6	kJ/mol	74.5086 ± 0.0026	3223-70-9*0
1-Chloropropyne		192.0	187.9	± 1.6	kJ/mol	74.5086 ± 0.0026	7747-84-4*0
Methylcyclopentane		-68.60	-106.13	± 0.36	kJ/mol	84.1595 ± 0.0049	96-37-7*0
Dioxosilane		-906.75	-911.73	± 0.63	kJ/mol	60.08430 ± 0.00067	7631-86-9*500
Dioxosilane		-826.31	-902.23	± 0.65	kJ/mol	60.08430 ± 0.00067	7631-86-9*520
Tetraoxidanyl		2.1	0.4	± 2.9	kJ/mol	65.0055 ± 0.0012	69696-93-1*100
Silicon carbide cation		1602.0	1606.6	± 2.6	kJ/mol	40.09565 ± 0.00085	78393-58-5*0
Tetrafluorosilane cation		-138.1	-142.4	± 9.4	kJ/mol	104.07856 ± 0.00030	62859-94-3*0
Ethylene anion		232.1	224.5	± 2.0	kJ/mol	28.0537 ± 0.0016	34527-91-8*1
Difluorosilyliumyl		415.0	414.2	± 2.0	kJ/mol	66.08176 ± 0.00030	37300-76-8*0
Trifluoride ion		-349.0	-349.8	± 2.6	kJ/mol	56.9957582 ± 0.0000015	25730-99-8*0
Dioxaziridinyl cation		1365.9	1363.3	± 1.7	kJ/mol	46.00499 ± 0.00060	66252-29-70
Silyliumyl		1155.45	1153.83	± 0.94	kJ/mol	30.10083 ± 0.00033	28149-31-7*0
Disilanyl anion		63.4	51.0	± 2.1	kJ/mol	61.21125 ± 0.00069	53199-49-8*0
Disilene		393.2	384.7	± 2.2	kJ/mol	60.20276 ± 0.00066	15435-77-5*1
Dioxaziridinyl anion		295.9	293.4	± 1.7	kJ/mol	46.00609 ± 0.00060	66252-31-1*0
Di-mu-hydrodihydrodisilicon		385.4	375.0	± 2.7	kJ/mol	60.20276 ± 0.00066	129970-82-7*22
Dihydrogen fluoride		-55.9	-54.9	± 1.6	kJ/mol	21.01428 ± 0.00014	12592-22-2*1
Hydrogen fluoride			-321.85	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*902
Iodosilane		6.9	-2.8	± 2.6	kJ/mol	158.01379 ± 0.00037	13598-42-0*0
Trimethylsilanide		-41.9	-65.4	± 2.1	kJ/mol	73.1896 ± 0.0025	54711-92-1*0
Peroxyformic acid		-265.2	-273.1	± 1.4	kJ/mol	62.0248 ± 0.0012	107-32-4*3
Peroxyimidogen cation		1409.7	1406.8	± 1.9	kJ/mol	46.00499 ± 0.00060	60488-32-60
Peroxyimidogen anion		165.0	162.7	± 1.7	kJ/mol	46.00609 ± 0.00060	60488-31-5*0
(3E)-1,3-Hexadien-5-yne		358.8	346.5	± 1.9	kJ/mol	78.1118 ± 0.0048	5222-77-5*0
Divinylacetylene		361.8	350.4	± 1.9	kJ/mol	78.1118 ± 0.0048	821-08-9*2
1,2,4-Cyclohexatriene		419.5	403.6	± 2.0	kJ/mol	78.1118 ± 0.0048	124869-33-6*0
Pentatetraene		452.6	448.6	± 1.2	kJ/mol	64.0853 ± 0.0040	21986-03-8*0
Nirous oxide cation		1329.70	1326.80	± 0.12	kJ/mol	44.01233 ± 0.00033	12269-46-4*0
Ethylammoniumyl		827.6	807.6	± 1.6	kJ/mol	45.0832 ± 0.0017	41857-50-5*0
2-Methyl-2-propanamine		-87.01	-120.66	± 0.55	kJ/mol	73.1369 ± 0.0033	75-64-9*0
Benzophenone		80.7	51.5	± 1.5	kJ/mol	182.2179 ± 0.0104	119-61-9*0
Helium		1912.302	1912.302	± 0.000	kJ/mol	4.0026020 ± 0.0000020	7440-59-7*1
Helium cation		2372.322	2372.322	± 0.000	kJ/mol	4.0020534 ± 0.0000020	14234-48-1*0
Neonium		1324.85	1323.04	± 0.87	kJ/mol	21.18709 ± 0.00060	12200-65-6*0
Kryptonium		1106.29	1104.50	± 0.68	kJ/mol	84.8074 ± 0.1000	37276-90-7*0
Monosulfur cation		1276.42	1278.21	± 0.14	kJ/mol	32.0655 ± 0.0060	14701-12-3*0
Oxosulfur		999.26	999.87	± 0.13	kJ/mol	48.0649 ± 0.0060	767269-11-4*0
Oxadiazirine anion		95.1	95.5	± 2.9	kJ/mol	44.01343 ± 0.00033	350586-31-1*0
Hydrogen oxide sulfide		51.1	45.1	± 1.4	kJ/mol	50.0813 ± 0.0060	155348-09-7*0
Sulfuric acid			-887.18	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*825
Sulfuric acid			-899.22	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*846
Hydrogen sulfate		-942.5	-952.9	± 1.9	kJ/mol	97.0721 ± 0.0061	14996-02-2*0
Fluoroniumyl ion		1275.556	1275.788	± 0.022	kJ/mol	20.005795 ± 0.000070	12381-92-9*0
Hydrogen sulfite		-684.2	-691.4	± 1.9	kJ/mol	81.0727 ± 0.0061	15181-46-1*0
Ethanethiol		-71.48	-73.09	± 0.37	kJ/mol	62.1350 ± 0.0062	75-08-1*500
Dimethylsulfoxide		-201.93	-203.58	± 0.49	kJ/mol	78.1344 ± 0.0062	67-68-5*500
Carbon monosulfide		278.92	282.17	± 0.68	kJ/mol	44.0767 ± 0.0061	2944-05-0*0
Platinum		563.4	564.3	± 1.7	kJ/mol	195.0780 ± 0.0020	7440-06-4*0
Aminomethylene anion		353.0	346.1	± 2.3	kJ/mol	29.04181 ± 0.00083	207914-86-1*0
Cyclohexene		27.18	-4.29	± 0.32	kJ/mol	82.1436 ± 0.0049	110-83-8*0
Cyclohexene		-21.98	-37.85	± 0.30	kJ/mol	82.1436 ± 0.0049	110-83-8*500
Methylimidogen anion		321.1	313.4	± 1.3	kJ/mol	29.04181 ± 0.00083	82539-34-2*0
1-Hydroxyethanide		-20.3	-33.7	± 2.2	kJ/mol	45.0610 ± 0.0017	88032-18-2*0
Bromine atom		117.925	111.862	± 0.055	kJ/mol	79.90400 ± 0.00100	10097-32-2*1
(Methylmethylene)oxonium		686.0	671.7	± 2.2	kJ/mol	45.0600 ± 0.0017	23653-97-6*0
Methoxymethyl anion		23.4	10.4	± 2.3	kJ/mol	45.0610 ± 0.0017	61192-30-1*0
Methyleneaminylium		1456.7	1453.1	± 2.1	kJ/mol	28.03277 ± 0.00082	53518-13-1*1
Acetaldehyde anion		-62.1	-72.4	± 2.2	kJ/mol	44.0531 ± 0.0017	60427-04-5*0
Hydrogen chloride			-166.634	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*840
Ketene cation		882.24	879.07	± 0.11	kJ/mol	42.0361 ± 0.0016	64999-16-2*0
Ketene anion		-16.0	-19.1	± 2.2	kJ/mol	42.0372 ± 0.0016	56391-79-8*0
Oxoethenylium		1139.7	1142.5	± 2.1	kJ/mol	41.0282 ± 0.0016	92056-63-8*0
1,3-Propanediyl		337.7	323.0	± 2.2	kJ/mol	42.0797 ± 0.0024	32458-33-6*21
Hydrogen chloride			-166.562	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*839
Aminomethyliumylidene		1168.3	1165.1	± 2.2	kJ/mol	28.03277 ± 0.00082	86784-42-1*0
2-Chloro ozone anion		-103.6	-105.9	± 3.2	kJ/mol	83.4514 ± 0.0013	141801-67-40
Oxiranylidene		456.2	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
Dihydroxymethylium		421.5	410.2	± 3.1	kJ/mol	47.0328 ± 0.0010	180071-68-5*1
Hydroxymethoxy cation		925.0	914.7	± 3.2	kJ/mol	47.0328 ± 0.0010	180071-69-6*13
Carbon tetracation		14993.620	14998.766	± 0.050	kJ/mol	12.00851 ± 0.00080	16092-62-9*0
Oxybismethanol		-534.2	-557.2	± 1.9	kJ/mol	78.0672 ± 0.0019	4407-89-0*11
Methoxyoxoniumylidene		1012.33	1003.49	± 0.67	kJ/mol	47.0328 ± 0.0010	86475-50-5*0
Hydrogen fluoride			-321.97	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*823
Ethylperoxy		-5.43	-21.53	± 0.88	kJ/mol	61.0599 ± 0.0017	3170-61-4*1
Diazenium		968.64	957.38	± 0.73	kJ/mol	31.03675 ± 0.00025	37369-93-0*0
Hypofluorous acid cation		1142.02	1139.01	± 0.87	kJ/mol	36.00519 ± 0.00031	90243-22-4*0
Formic acid		-431.50	-424.66	± 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		54.8	49.7	± 1.4	kJ/mol	46.0259 ± 0.0010	93207-29-5*0
Dinitrogen pentoxide			-41.13	± 0.38	kJ/mol	108.0105 ± 0.0015	10102-03-1*500
H-CO2 vdW complex		-178.3	-177.5	± 2.1	kJ/mol	45.0174 ± 0.0010	2564-83-2100
Dibromine			-2.25	± 0.18	kJ/mol	159.8080 ± 0.0020	7726-95-6*800
2-Propanol		-305.35	-318.16	± 0.27	kJ/mol	60.0950 ± 0.0025	67-63-0*500
1-Propanol		-290.27	-302.45	± 0.19	kJ/mol	60.0950 ± 0.0025	71-23-8*500
Water			-285.804	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*589
Carbon		711.404	716.889	± 0.040	kJ/mol	12.01070 ± 0.00080	7440-44-0*1
Carbon		833.335	838.481	± 0.040	kJ/mol	12.01070 ± 0.00080	7440-44-0*2
Oxazirinyl cation		1565.5	1566.3	± 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
Acetic acid			-484.61	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*825
Acetic acid			-484.81	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*840
Ethyl formate			-425.9	± 1.1	kJ/mol	74.0785 ± 0.0025	109-94-4*500
Hydrogen fluoride			-321.32	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*809
Nitric acid			-186.81	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*801
Fluorosyl fluoride anion		-56.6	-55.7	± 2.4	kJ/mol	53.99675 ± 0.00030	86825-57-21
Tribromine		156.0	134.3	± 3.2	kJ/mol	239.7120 ± 0.0030	11094-39-6*0
Propionic acid		-415.5	-433.1	± 1.3	kJ/mol	74.0785 ± 0.0025	79-09-4*2
Ammonium radical		190.01	179.43	± 0.43	kJ/mol	18.03850 ± 0.00029	92075-50-8*0
(1Z)-Ethanimine		58.9	44.2	± 1.4	kJ/mol	43.0678 ± 0.0016	56003-82-8*0
(E)-2-Iminoethylium		1108.3	1097.6	± 2.9	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
Isocyanomethylium		1272.7	1270.5	± 2.2	kJ/mol	40.0435 ± 0.0016	78269-43-9*0
Cyanogen cation		1598.26	1600.47	± 0.42	kJ/mol	52.0343 ± 0.0016	37354-81-7*0
Isocyanogen		412.1	414.4	± 1.3	kJ/mol	52.0349 ± 0.0016	83951-85-3*0
Diazoethenylidene		658.6	661.2	± 1.8	kJ/mol	52.0349 ± 0.0016	130760-10-0*0
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		410.1	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
1-Propenylidene		630.5	623.0	± 1.7	kJ/mol	40.0639 ± 0.0024	70277-78-0*2
Diazirinyl		557.1	553.9	± 2.0	kJ/mol	41.03212 ± 0.00082	69967-71-1*2
Iminomethylimidogen anion		401.9	398.6	± 2.3	kJ/mol	41.03267 ± 0.00082	150296-30-3*2
1H-Diazirin-3-ylium		1527.2	1523.7	± 2.0	kJ/mol	41.03157 ± 0.00082	735234-64-7*2
1H-Diazirin-3-yl		917.7	914.3	± 1.9	kJ/mol	41.03212 ± 0.00082	324529-57-9*2
1H-diazirin-3-ide		379.8	376.7	± 2.0	kJ/mol	41.03267 ± 0.00082	735234-64-72
Methanediimine cation		1137.8	1133.1	± 2.2	kJ/mol	42.03951 ± 0.00082	1189338-16-6*2
Hydrogen carbonate			-689.866	± 0.039	kJ/mol	61.0174 ± 0.0012	71-52-3*800
Diazomethane cation		1141.93	1135.65	± 0.87	kJ/mol	42.03951 ± 0.00082	58852-13-4*0
3H-Diazirine cation		1327.6	1322.0	± 1.7	kJ/mol	42.03951 ± 0.00082	796039-16-2*0
1H-Diazirene cation		1333.4	1326.3	± 1.9	kJ/mol	42.03951 ± 0.00082	157-23-30
Isocyanamide cation		1321.4	1316.1	± 1.9	kJ/mol	42.03951 ± 0.00082	160951-17-7*0
3-Diaziridinylidene cation		1479.7	1473.7	± 2.4	kJ/mol	42.03951 ± 0.00082	85513-79-71
Trichloromethylium		856.10	854.58	± 0.93	kJ/mol	118.3683 ± 0.0028	27130-34-3*0
Dichloromethyliumyl		1122.0	1122.9	± 1.8	kJ/mol	82.9156 ± 0.0020	55945-51-2*0
Methylammoniumyl		866.00	852.06	± 0.25	kJ/mol	31.05659 ± 0.00088	34516-31-9*0
Triiodine cation		946.1	941.0	± 4.1	kJ/mol	380.712861 ± 0.000090	12596-32-6*0
Methylamine anion		84.2	69.4	± 2.8	kJ/mol	31.05769 ± 0.00088	81096-79-9*0
Imidogen anion		322.63	322.68	± 0.16	kJ/mol	15.015229 ± 0.000099	23841-33-0*0
Cyanogen bromide anion		57.9	54.3	± 3.8	kJ/mol	105.9220 ± 0.0013	54092-05-6*0
Imidogen		358.75	358.79	± 0.16	kJ/mol	15.014680 ± 0.000099	13774-92-0*1
1,1,1-Trichloroethane		-183.85	-177.21	± 0.52	kJ/mol	133.4033 ± 0.0031	71-55-6*500
Chlorosyl chloride cation		1132.6	1130.8	± 2.0	kJ/mol	86.9043 ± 0.0018	86825-56-10
Vinyl chloride		-3.60	0.96	± 0.91	kJ/mol	62.4979 ± 0.0018	75-01-4*500
Hydrogen fluoride			-321.82	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*901
Chloromethane cation		1014.57	1007.80	± 0.18	kJ/mol	50.4867 ± 0.0012	12538-71-5*0
2-Propenylidyne anion		464.6	460.9	± 1.7	kJ/mol	39.0565 ± 0.0024	120126-89-8*0
1,2-Propadien-1-yl-3-ylidene anion		621.7	629.1	± 1.3	kJ/mol	36.0326 ± 0.0024	109292-47-9*0
2-Propen-3-yliumylidene		1494.5	1491.5	± 1.7	kJ/mol	39.0554 ± 0.0024	84654-86-4*0
Trifluorine cation		1529.5	1527.4	± 2.3	kJ/mol	56.9946610 ± 0.0000015	64710-22-1*0
Ammonium chloride		-311.555	-314.717	± 0.062	kJ/mol	53.49120 ± 0.00095	12125-02-9*510
Bromofluoromethane		-197.4	-211.9	± 4.9	kJ/mol	112.9290 ± 0.0013	373-52-4*0
Chlorosyl chloride anion		-185.4	-184.7	± 2.3	kJ/mol	86.9053 ± 0.0018	86825-55-00
2-Cyclopropyn-1-ylidene		993.2	1000.0	± 2.6	kJ/mol	36.0321 ± 0.0024	102508-15-6*2
Fluorodibromomethane		-159.7	-179.2	± 4.9	kJ/mol	191.8250 ± 0.0022	1868-53-7*0
2-Propenylidene anion		536.0	532.6	± 1.7	kJ/mol	39.0565 ± 0.0024	98705-30-7*0
Difluorochlorobromomethane		-428.9	-439.9	± 4.9	kJ/mol	165.3642 ± 0.0016	353-59-3*0
Dichlorofluorobromomethane		-228.3	-238.3	± 4.9	kJ/mol	181.8185 ± 0.0022	353-58-2*0
Dibromofluorochloromethane		-169.9	-186.8	± 4.9	kJ/mol	226.2698 ± 0.0023	353-55-9*0
Krypton cation		1350.756	1350.756	± 0.000	kJ/mol	83.7995 ± 0.1000	16915-28-9*0
Ammonium bromide		-253.26	-269.84	± 0.14	kJ/mol	97.9425 ± 0.0010	12124-97-9*510
Chloryl chloride		126.1	122.1	± 1.7	kJ/mol	102.9042 ± 0.0019	117489-73-3*0
Dioxodiazoxane		109.4	105.3	± 1.8	kJ/mol	76.01168 ± 0.00091	122413-35-8*2
Methanol anion		-89.0	-99.7	± 2.8	kJ/mol	32.04241 ± 0.00090	68474-04-4*0
2-Cyclopropyn-1-yl anion		664.6	671.9	± 1.6	kJ/mol	36.0326 ± 0.0024	500574-36-7*0
Nitric acid			-197.75	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*805
1,2-Difluoroacetylene cation		1081.7	1084.5	± 1.3	kJ/mol	62.0177 ± 0.0016	268566-70-7*0
Difluorophosgene cation		653.45	650.69	± 0.51	kJ/mol	66.00636 ± 0.00085	73256-56-1*0
Chloro(chlorooxy)methylene		73.5	73.7	± 3.6	kJ/mol	98.9155 ± 0.0020	479587-31-0*2
Chlorohydroxymethylene		14.0	11.1	± 2.5	kJ/mol	64.4707 ± 0.0012	147723-60-2*1
(Chlorooxy)methylene		119.3	117.9	± 2.7	kJ/mol	64.4707 ± 0.0012	331419-80-8*2
Dibromophosgene			-143.98	± 0.95	kJ/mol	187.8181 ± 0.0022	593-95-3*590
2-Chloroethanol			-314.90	± 0.53	kJ/mol	80.5132 ± 0.0019	107-07-3*590
2-Bromoethanol			-274.38	± 0.46	kJ/mol	124.9645 ± 0.0019	540-51-2*590
Hydrogen bromide			-120.31	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*844
Acetylene anion		380.1	380.4	± 1.9	kJ/mol	26.0378 ± 0.0016	50443-89-5*2
Phenylium		1149.14	1136.36	± 0.85	kJ/mol	77.1034 ± 0.0048	17333-73-2*2
Propynylidene		543.73	546.73	± 0.58	kJ/mol	38.0480 ± 0.0024	67152-18-5*0
Aminooxy anion		47.3	40.4	± 1.7	kJ/mol	32.02257 ± 0.00034	51375-41-8*0
m-Benzyne anion		444.6	435.7	± 1.3	kJ/mol	76.0965 ± 0.0048	249589-31-9*0
p-Benzyne anion		465.2	455.6	± 1.3	kJ/mol	76.0965 ± 0.0048	219298-17-6*0
Deuterium hydride cation		1490.498	1490.587	± 0.000	kJ/mol	3.021493 ± 0.000070	12181-16-7*0
Cycloheptane		-126.60	-156.49	± 0.50	kJ/mol	98.1861 ± 0.0057	291-64-5*500
Nitrate			-206.54	± 0.18	kJ/mol	62.00549 ± 0.00090	14797-55-8*800
Triazirinylium ion		1609.0	1606.1	± 1.6	kJ/mol	42.01967 ± 0.00021	92220-05-8*0
Hypochlorous acid cation		998.94	995.89	± 0.90	kJ/mol	52.45949 ± 0.00095	71606-47-8*0
Ethylbenzene			-12.30	± 0.52	kJ/mol	106.1650 ± 0.0064	100-41-4*500
Hydrogen chloride			-165.544	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*953
Phenylacetylene			273.82	± 0.70	kJ/mol	102.1332 ± 0.0064	536-74-3*500
Triazirine		464.2	457.7	± 2.6	kJ/mol	43.02816 ± 0.00022	157-29-9*0
Indane		25.47	11.00	± 0.76	kJ/mol	118.1757 ± 0.0072	496-11-7*500
Indene		117.30	110.01	± 0.86	kJ/mol	116.1598 ± 0.0072	95-13-6*500
Hypochlorous acid anion		198.7	198.4	± 2.5	kJ/mol	52.46059 ± 0.00095	34524-94-2*0
Phenyloxoniumylidene		898.6	884.2	± 1.4	kJ/mol	93.1028 ± 0.0048	41071-17-4*0
1-Cyclopropene-1,2-diyl		791.2	790.7	± 1.5	kJ/mol	38.0480 ± 0.0024	202744-75-0*0
3-Methanetetrayl-1,2-cyclopropanediylidene		1154.7	1164.2	± 1.9	kJ/mol	48.0428 ± 0.0032	78015-08-4*0
Hydrogen chloride			-165.554	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*825
2-Cyclopropyn-1-ylidenemethyl anion		800.9	809.8	± 1.7	kJ/mol	48.0433 ± 0.0032	289679-90-9*0
Formaldehyde anion		-26.7	-28.3	± 2.0	kJ/mol	30.02653 ± 0.00087	27837-46-3*0
Fluorobenzene		-148.73	-146.32	± 0.39	kJ/mol	96.1023 ± 0.0048	462-06-6*500
Bromobenzene			60.2	± 1.3	kJ/mol	157.0079 ± 0.0049	108-86-1*500
Hydrogen difluoride cation		1174.3	1171.3	± 1.5	kJ/mol	39.004198 ± 0.000070	126950-54-72
Pyridinium		761.7	740.8	± 1.3	kJ/mol	80.1073 ± 0.0040	16969-45-2*0
Acetone		-244.56	-247.67	± 0.26	kJ/mol	58.0791 ± 0.0025	67-64-1*500
Formaldehyde		196.010	192.708	± 0.095	kJ/mol	30.02598 ± 0.00087	50-00-0*1
Propionaldehyde		-217.91	-216.45	± 0.24	kJ/mol	58.0791 ± 0.0025	123-38-6*500
Ethyl nitrite		-81.14	-98.54	± 0.87	kJ/mol	75.0666 ± 0.0017	109-95-5*0
trans-1,2-Dibromoethene	$C(\Br)=C/Br$	121.6	101.8	± 2.0	kJ/mol	185.8453 ± 0.0026	590-12-5*0
1,1-Dibromoethene		125.5	105.1	± 2.1	kJ/mol	185.8453 ± 0.0026	593-92-0*0
Norbornadiene		268.08	242.64	± 0.94	kJ/mol	92.1384 ± 0.0056	121-46-0*0
Monoammonium succinate			-1067.86	± 0.72	kJ/mol	135.1186 ± 0.0035	38457-08-8*510
Diammonium succinate			-1182.37	± 0.47	kJ/mol	152.1492 ± 0.0035	2226-88-2*510
Acrolein		-46.4	-56.7	± 1.3	kJ/mol	56.0633 ± 0.0024	107-02-8*2
2H-Oxete		65.8	53.3	± 1.2	kJ/mol	56.0633 ± 0.0024	287-25-2*0
Cyclopropenyliumdiyl		1692.3	1695.3	± 1.8	kJ/mol	37.0395 ± 0.0024	127476-05-5*0
1-Formylethenylium		1023.5	1018.0	± 2.3	kJ/mol	55.0548 ± 0.0024	101705-89-9*2
Cyclopropynyl anion		518.40	521.39	± 0.76	kJ/mol	37.0406 ± 0.0024	136861-42-2*0
3-Oxo-1-propenylium		1005.1	1002.8	± 2.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*2
Ethenedione cation		909.5	912.6	± 2.0	kJ/mol	56.0197 ± 0.0017	12541-99-0*0
Chlorine difluoride cation		1346.3	1344.9	± 2.1	kJ/mol	73.44896 ± 0.00090	86825-59-4*0
Ozone cation		1352.880	1350.541	± 0.041	kJ/mol	47.99765 ± 0.00090	12596-82-6*0
Hydrogen fluoride			-321.93	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*821
Chlorine difluoride anion		-319.0	-319.0	± 2.2	kJ/mol	73.45005 ± 0.00090	91419-41-9*0
Aminomethyl anion		209.5	199.3	± 2.1	kJ/mol	30.04975 ± 0.00085	74215-21-7*0
Ethanium		888.8	870.3	± 1.8	kJ/mol	31.0764 ± 0.0017	24669-33-8*2
Hydrogen chloride			-165.944	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*907
Hydrooxonitrate		78.62	75.71	± 0.99	kJ/mol	31.01463 ± 0.00032	66057-02-1*0
Nitrosyl nitrate		48.3	40.4	± 1.8	kJ/mol	92.0111 ± 0.0012	15969-55-8*1
Hydroxyimidogen anion		229.9	227.4	± 2.2	kJ/mol	31.01463 ± 0.00032	35337-59-80
Tetranitrogen cation		1392.8	1392.5	± 1.5	kJ/mol	56.02641 ± 0.00028	12185-04-5*0
3-Imino-2-propen-1-ylidene		533.0	527.9	± 1.8	kJ/mol	53.0627 ± 0.0024	916765-05-4*12
Fluoronium		774.04	771.10	± 0.91	kJ/mol	21.01373 ± 0.00014	12206-67-6*0
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
Ethanium		895.2	877.3	± 1.9	kJ/mol	31.0764 ± 0.0017	24669-33-8*3
1-Cyanovinylium		1318.3	1317.1	± 2.2	kJ/mol	52.0542 ± 0.0024	85399-09-3*0
Tribromide		-287.4	-308.5	± 1.9	kJ/mol	239.7125 ± 0.0030	14522-80-6*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
Bicyclo[1.1.0]but-3-ene		483.2	474.2	± 1.6	kJ/mol	52.0746 ± 0.0032	78525-41-4*0
Vinylvinylidene anion		405.7	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	570.4	± 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
1-Buten-3-yn-1-yl		547.7	545.0	± 1.2	kJ/mol	51.0666 ± 0.0032	2810-61-9*2
3-Buten-1-ynylium		1603.8	1602.8	± 1.7	kJ/mol	51.0661 ± 0.0032	103928-84-3*2
3-Methylene-1-cyclopropen-1-ylium		1467.6	1463.9	± 1.6	kJ/mol	51.0661 ± 0.0032	117469-28-0*1
2-Cyclopropen-1-ylidenemethylium		1346.4	1343.8	± 1.8	kJ/mol	51.0661 ± 0.0032	112936-36-4*2
1,3-Cyclobutadien-1-ylium		1388.2	1383.3	± 1.8	kJ/mol	51.0661 ± 0.0032	81913-77-1*2
Hydroxyoxoammoniumyl		984.1	977.7	± 1.8	kJ/mol	47.01293 ± 0.00061	80371-48-8*0
Cyanic azide		502.8	498.3	± 1.9	kJ/mol	68.03766 ± 0.00085	764-05-6*0
Phenyl hydroperoxide		13.6	-5.4	± 2.1	kJ/mol	110.1106 ± 0.0049	36112-26-2*0
Methylaminilium		1135.2	1125.4	± 2.1	kJ/mol	30.04865 ± 0.00085	49784-84-1*0
2-Butynylium		1258.7	1251.4	± 1.6	kJ/mol	53.0820 ± 0.0032	64235-83-2*1
Methylcyclopentane		-116.55	-137.91	± 0.35	kJ/mol	84.1595 ± 0.0049	96-37-7*500
Dioxosilane		-904.05	-908.91	± 0.68	kJ/mol	60.08430 ± 0.00067	7631-86-9*510
1-Methylene-2-propenylium		1059.4	1049.3	± 1.7	kJ/mol	53.0820 ± 0.0032	62698-26-4*2
1-Methylene-2-propenylium		1256.4	1246.6	± 1.7	kJ/mol	53.0820 ± 0.0032	62698-26-4*1
Methyliumylamino		1056.1	1049.2	± 1.7	kJ/mol	29.04071 ± 0.00083	65130-65-6*0
Fluorosilylidyne		-60.28	-58.45	± 0.62	kJ/mol	47.08390 ± 0.00030	11128-24-8*0
Ethylene anion		231.6	225.5	± 2.0	kJ/mol	28.0537 ± 0.0016	34527-91-8*2
Azanidylmethyl		224.4	217.1	± 2.2	kJ/mol	29.04181 ± 0.00083	127593-73-1*0
Silylene anion		167.1	165.5	± 1.4	kJ/mol	30.10193 ± 0.00033	54991-62-7*0
Silyliumylidene		1136.48	1137.68	± 0.80	kJ/mol	29.09289 ± 0.00031	31241-66-4*0
Disilene cation		1069.3	1060.3	± 2.0	kJ/mol	60.20221 ± 0.00066	108492-63-3*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	± 3.3	kJ/mol	60.20331 ± 0.00066	129970-83-81
mu-Hydrotrihydrodisilicon		459.1	450.8	± 2.5	kJ/mol	60.20276 ± 0.00066	497967-55-2*1
1,3-Butadienylium		1133.6	1123.6	± 2.5	kJ/mol	53.0820 ± 0.0032	86181-69-3*2
Vinylsilane		107.9	92.5	± 2.2	kJ/mol	58.1545 ± 0.0017	7291-09-0*0
Hydrogen bromide			-120.01	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*834
Hydroperoxyimidogen		103.4	99.8	± 2.4	kJ/mol	47.01348 ± 0.00061	877456-58-1*1
1-Ethylium-1-yl		1182.0	1174.7	± 3.2	kJ/mol	28.0526 ± 0.0016	85944-79-2*0
Ethylidene anion		325.7	318.4	± 1.8	kJ/mol	28.0537 ± 0.0016	35829-99-3*0
Dewar benzene		422.1	405.1	± 1.7	kJ/mol	78.1118 ± 0.0048	5649-95-6*0
Aminomethyliumyl		1039.5	1031.8	± 2.3	kJ/mol	29.04071 ± 0.00083	89302-94-3*0
1,2-Hexadien-4-yne		407.5	397.5	± 1.7	kJ/mol	78.1118 ± 0.0048	34783-10-3*0
3-Methylene-1-penten-4-yne		362.6	350.0	± 2.2	kJ/mol	78.1118 ± 0.0048	6929-96-0*1
3-Methyl-1,4-pentadiyne		439.0	427.6	± 1.6	kJ/mol	78.1118 ± 0.0048	57242-04-3*0
iso-Proplylide		128.9	110.4	± 1.5	kJ/mol	43.0882 ± 0.0024	25012-80-0*0
Nirous oxide anion		99.3	96.7	± 1.9	kJ/mol	44.01343 ± 0.00033	12274-12-3*0
Propylene cation		975.19	961.66	± 0.18	kJ/mol	42.0792 ± 0.0024	34504-10-4*0
Hydrogen bromide			-120.14	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*954
Ethylaminylium		1092.4	1076.4	± 2.4	kJ/mol	44.0752 ± 0.0017	54387-08-5*11
2-Methyl-2-propanamine		-133.11	-150.60	± 0.53	kJ/mol	73.1369 ± 0.0033	75-64-9*500
1,2-Diphenylethane		84.82	51.08	± 0.75	kJ/mol	182.2610 ± 0.0112	103-29-7*500
Anthracene		150.68	124.87	± 0.88	kJ/mol	178.2292 ± 0.0112	120-12-7*500
Phenanthrene		136.31	111.03	± 0.64	kJ/mol	178.2292 ± 0.0112	85-01-8*500
Diphenylacetylene		432.3	407.3	± 1.2	kJ/mol	178.2292 ± 0.0112	501-65-5*0
Diphenylacetylene		334.67	312.72	± 0.93	kJ/mol	178.2292 ± 0.0112	501-65-5*500
Benzophenone		-16.7	-41.9	± 1.5	kJ/mol	182.2179 ± 0.0104	119-61-9*500
Bicyclo[1.1.0]buta-1,1-diene-2,4-diyl		990.4	993.6	± 2.0	kJ/mol	49.0507 ± 0.0032	99417-53-50
Benzoic acid		-274.33	-294.13	± 0.19	kJ/mol	122.1213 ± 0.0056	65-85-0*0
Nitric acid cation		1029.18	1020.12	± 0.69	kJ/mol	63.01233 ± 0.00091	272109-63-4*0
Trioxidanylium		1070.4	1064.2	± 1.4	kJ/mol	49.00559 ± 0.00090	74241-49-9*0
Fluorosyl fluoride cation		1413.1	1413.4	± 3.5	kJ/mol	53.99566 ± 0.00030	86825-50-51
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
Hypofluorous acid anion		155.3	154.7	± 2.6	kJ/mol	36.00629 ± 0.00031	36505-07-4*2
Monosulfur anion		76.42	78.48	± 0.14	kJ/mol	32.0665 ± 0.0060	14337-03-2*0
Sulfur dioxide			-320.69	± 0.14	kJ/mol	64.0648 ± 0.0060	7446-09-5*1000
Cyclopentene			7.38	± 0.49	kJ/mol	68.1170 ± 0.0040	142-29-0*590
Chloroniumyl ion		1137.798	1137.732	± 0.0051	kJ/mol	36.46009 ± 0.00090	12258-94-5*0
Sulfur oxide peroxide		-26.0	-30.3	± 2.3	kJ/mol	80.0642 ± 0.0061	175799-68-5*2
Hydrogen chloride			-166.603	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*954
Sulfuric acid			-887.70	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*893
Sulfuric acid			-885.87	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*820
Sulfuric acid			-886.66	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*822
Peroxychloric acid		76.6	68.4	± 2.5	kJ/mol	100.4582 ± 0.0015	177778-91-5*0
Sulfuric acid			-900.64	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*850
Methanethiol		-46.75	-44.57	± 0.44	kJ/mol	48.1085 ± 0.0061	74-93-1*500
Hydroxydimethylsulfur		-19.7	-37.7	± 2.6	kJ/mol	79.1424 ± 0.0062	52670-37-8*0
Carbon disulfide		78.26	89.06	± 0.69	kJ/mol	76.1427 ± 0.0120	75-15-0*500
Hydrogen atom		-22.3	-24.0	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1000001
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
Trioxirane		272.7	270.1	± 1.3	kJ/mol	47.99820 ± 0.00090	153851-84-4*0
Formyloxidanyl		-125.80	-127.16	± 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
1-Propenylium		1231.9	1221.6	± 1.7	kJ/mol	41.0713 ± 0.0024	50457-58-4*2
1-Propenylide		204.0	192.7	± 1.8	kJ/mol	41.0723 ± 0.0024	65887-20-9*2
Diethyl ether		-265.28	-277.60	± 0.75	kJ/mol	74.1216 ± 0.0033	60-29-7*500
Dioxohydrazine		172.93	171.16	± 0.14	kJ/mol	60.01228 ± 0.00062	16824-89-8*2
Bromosyl bromide		180.4	164.6	± 2.1	kJ/mol	175.8074 ± 0.0020	68322-97-4*0
1-Butanol		-312.83	-327.11	± 0.21	kJ/mol	74.1216 ± 0.0033	71-36-3*500
2-Methyl-2-propanol		-282.0	-312.2	± 1.9	kJ/mol	74.1216 ± 0.0033	75-65-0*0
Acetonitrile			40.64	± 0.22	kJ/mol	41.0520 ± 0.0016	75-05-8*500
n-Heptane		-201.49	-223.95	± 0.45	kJ/mol	100.2019 ± 0.0057	142-82-5*500
Hydrogen chloride			-166.711	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*951
Glycolaldehyde		-292.2	-304.7	± 1.7	kJ/mol	60.0520 ± 0.0017	141-46-8*21
Glycolaldehyde		-290.5	-302.8	± 1.7	kJ/mol	60.0520 ± 0.0017	141-46-8*31
Glycolaldehyde		-283.8	-296.7	± 1.7	kJ/mol	60.0520 ± 0.0017	141-46-8*22
Carbon dioxide			-412.868	± 0.018	kJ/mol	44.00950 ± 0.00100	124-38-9*1000
Dioxohydrazine		172.93	171.16	± 0.14	kJ/mol	60.01228 ± 0.00062	16824-89-8*0
Methyl acetate			-445.62	± 0.56	kJ/mol	74.0785 ± 0.0025	79-20-9*500
Chloryl ion		1100.26	1097.60	± 0.53	kJ/mol	67.4510 ± 0.0011	25052-55-5*0
Carbon dioxide anion		-340.6	-340.1	± 2.2	kJ/mol	44.01005 ± 0.00100	14485-07-5*0
Tetraoxidanyl		53.0	46.0	± 5.1	kJ/mol	65.0055 ± 0.0012	69696-93-1*2
1-Hydroxy-2-propanone		-340.6	-360.3	± 1.7	kJ/mol	74.0785 ± 0.0025	116-09-6*21
1-Hydroxy-2-propanone		-338.0	-356.2	± 1.7	kJ/mol	74.0785 ± 0.0025	116-09-6*31
1-Hydroxy-2-propanone		-329.7	-349.6	± 1.7	kJ/mol	74.0785 ± 0.0025	116-09-6*22
(Z)-Diazene anion	$[H]/N=[N-]\[H]$	280.0	273.3	± 2.0	kJ/mol	30.02991 ± 0.00020	86631-37-00
Methoxyoxomethyl		-151.7	-160.7	± 1.5	kJ/mol	59.0440 ± 0.0017	16481-04-2*2
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
Dihydrogen fluoride		-56.5	-54.2	± 1.7	kJ/mol	21.01428 ± 0.00014	12592-22-2*2
Propionic acid		-505.38	-509.52	± 0.17	kJ/mol	74.0785 ± 0.0025	79-09-4*500
Ammonia anion		94.3	87.3	± 2.4	kJ/mol	17.03111 ± 0.00022	37353-00-7*0
Ethylene glycol		-448.63	-455.15	± 0.37	kJ/mol	62.0678 ± 0.0018	107-21-1*500
Triiodine		153.4	149.4	± 3.6	kJ/mol	380.713410 ± 0.000090	12596-31-5*0
Dioxymethylidyne cation		1436.6	1439.1	± 2.7	kJ/mol	44.00895 ± 0.00100	791121-04-52
Oxalic acid		-819.55	-829.64	± 0.42	kJ/mol	90.0349 ± 0.0020	144-62-7*500
Dimethylamine			-42.60	± 0.58	kJ/mol	45.0837 ± 0.0017	124-40-3*500
Dioxymethylidyne cation		1388.2	1391.7	± 3.2	kJ/mol	44.00895 ± 0.00100	791121-04-5101
Nitric acid trihydrate		-1062.01	-1055.16	± 0.20	kJ/mol	117.0587 ± 0.0019	13444-83-2*500
Isodiazene anion		380.9	374.1	± 2.1	kJ/mol	30.02991 ± 0.00020	63986-30-10
Dihydrogen cation		1488.364	1488.480	± 0.000	kJ/mol	2.01533 ± 0.00014	12184-90-6*2
(E)-2-Iminoethylium		1148.6	1138.9	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-33-2*12
Dihydrogen cation		1489.060	1488.480	± 0.000	kJ/mol	2.01533 ± 0.00014	12184-90-6*1
1-Iminoethylium		833.7	823.2	± 3.0	kJ/mol	42.0594 ± 0.0016	128365-64-02
1-Iminoethanide		185.7	175.3	± 3.2	kJ/mol	42.0604 ± 0.0016	128365-65-12
1-Iminoethylium		1342.2	1333.3	± 3.9	kJ/mol	42.0594 ± 0.0016	128365-64-012
N-Methylenemethaniminium		904.3	893.4	± 3.1	kJ/mol	42.0594 ± 0.0016	88333-01-1*2
(Methylimino)methanide		223.0	212.2	± 3.2	kJ/mol	42.0604 ± 0.0016	64709-60-01
Chlorine hydride oxide		163.9	154.0	± 2.4	kJ/mol	84.4588 ± 0.0013	1027055-52-2*0
2-Aminoethenylium		1110.6	1099.5	± 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			92.20	± 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		1304.8	1293.1	± 4.1	kJ/mol	42.0594 ± 0.0016	91127-35-412
Trimethylamine			-48.29	± 0.89	kJ/mol	59.1103 ± 0.0025	75-50-3*500
Ammonium hydroxide			-366.39	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*833
Methoxymethylene		144.8	134.4	± 1.4	kJ/mol	44.0526 ± 0.0017	19527-10-7*22
Cyanogen anion		281.6	284.7	± 2.2	kJ/mol	52.0354 ± 0.0016	11118-88-0*0
Dihydrogen		1.417	0.019	± 0.000	kJ/mol	2.01588 ± 0.00014	1333-74-0*1
Diisocyanogen cation		1825.3	1828.1	± 3.2	kJ/mol	52.0343 ± 0.0016	78800-21-21
Azide			272.70	± 0.48	kJ/mol	42.02077 ± 0.00021	14343-69-2*800
Ethynylaminylium		1277.8	1277.4	± 2.6	kJ/mol	40.0435 ± 0.0016	103835-08-1*1
Cyanoaminyliumyl		1672.4	1673.7	± 2.6	kJ/mol	40.02363 ± 0.00081	316122-03-9*0
Cyanoamidogen anion		211.87	211.80	± 0.60	kJ/mol	40.02473 ± 0.00081	189879-95-6*0
Cyanoaminylium		1460.2	1458.0	± 1.9	kJ/mol	41.03157 ± 0.00082	205443-18-1*2
Nitrogen atom dianion		1062.8	1065.0	± 2.8	kJ/mol	14.007837 ± 0.000070	16727-21-2*0
Diazomethanide		479.7	478.3	± 1.8	kJ/mol	41.03267 ± 0.00082	100840-43-5*1
Nitric acid monohydrate		-479.11	-472.62	± 0.18	kJ/mol	81.0282 ± 0.0012	13444-82-1*500
Carbon dioxide cation		1335.0	1335.5	± 2.4	kJ/mol	44.00895 ± 0.00100	12181-61-2*1
Carbon monoxide anion		30.0	33.7	± 2.3	kJ/mol	28.01065 ± 0.00085	12539-63-8*0
Isocyanic fluoride		301.0	302.9	± 1.8	kJ/mol	45.01584 ± 0.00080	16992-26-0*0
2-Hydroxyethenyl		143.83	137.28	± 0.99	kJ/mol	43.0446 ± 0.0016	108665-16-3*11
2-Hydroxyethenyl		147.1	140.9	± 1.2	kJ/mol	43.0446 ± 0.0016	108665-16-3*22
1H-Diazirin-3-ylium		1640.4	1638.1	± 2.0	kJ/mol	41.03157 ± 0.00082	735234-64-7*1
2-Hydroxyethenyl		150.6	144.5	± 1.6	kJ/mol	43.0446 ± 0.0016	108665-16-3*12
1H-diazirin-3-ide		655.2	652.1	± 2.1	kJ/mol	41.03267 ± 0.00082	735234-64-71
1H-Diazirin-3-yl		618.7	615.8	± 1.6	kJ/mol	41.03212 ± 0.00082	324529-57-9*0
Cyanamide			59.04	± 0.52	kJ/mol	42.04006 ± 0.00082	420-04-2*500
n-Octane		-226.28	-249.40	± 0.53	kJ/mol	114.2285 ± 0.0065	111-65-9*500
Carbon monoxide		465.583	469.290	± 0.026	kJ/mol	28.01010 ± 0.00085	630-08-0*1
Methylenediazeniumide		375.2	368.7	± 1.9	kJ/mol	42.04006 ± 0.00082	24153-51-3*0
Methylidynehydrazinium-1-yl		1251.7	1245.8	± 1.9	kJ/mol	42.03951 ± 0.00082	160951-16-6*0
(Iminomethyl)imidogen		420.1	413.1	± 2.9	kJ/mol	42.04006 ± 0.00082	87570-07-8*11
Diazomethyliumyl		1639.6	1640.8	± 3.1	kJ/mol	40.02363 ± 0.00081	307495-90-5*0
Diazomethylene anion		407.0	407.1	± 2.4	kJ/mol	40.02473 ± 0.00081	205498-92-6*0
3H-Diazirin-3-ylidene		579.1	579.5	± 2.7	kJ/mol	40.02418 ± 0.00081	253308-70-2*0
Isocyanogen chloride		314.7	316.3	± 2.4	kJ/mol	61.4701 ± 0.0012	75754-69-7*0
Oxobromonium		1140.0	1132.2	± 1.6	kJ/mol	95.9029 ± 0.0010	142315-39-7*0
Chloromethyliumylidene		1282.8	1285.8	± 2.4	kJ/mol	47.4629 ± 0.0012	69773-94-0*0
Chloromethylidyne anion		319.9	323.6	± 2.5	kJ/mol	47.4639 ± 0.0012	117129-77-8*0
n-Nonane		-247.58	-274.44	± 0.48	kJ/mol	128.2551 ± 0.0073	111-84-2*500
1,3-Propanediyl		320.3	308.5	± 1.5	kJ/mol	42.0797 ± 0.0024	32458-33-6*12
Tetraoxodinitrogen cation		1030.7	1025.2	± 2.6	kJ/mol	92.0105 ± 0.0012	64476-91-1*0
1-Propynylium		1547.1	1545.1	± 3.1	kJ/mol	39.0554 ± 0.0024	24858-94-4*0
Methylamine			-45.17	± 0.45	kJ/mol	31.05714 ± 0.00088	74-89-5*500
Hydrogen iodide			-56.827	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*800
Hydrogen difluoride cation		1241.	1238.	± 17.	kJ/mol	39.004198 ± 0.000070	126950-54-7*1
Cycloprop-1-enylium		1502.3	1498.0	± 2.2	kJ/mol	39.0554 ± 0.0024	117067-78-4*0
Isocyanogen bromide		341.2	335.5	± 3.5	kJ/mol	105.9214 ± 0.0013	65997-98-0*0
Ethynylene		827.229	833.934	± 0.086	kJ/mol	24.0214 ± 0.0016	12070-15-4*1
Hydrogen fluoride			-321.86	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*903
Cycloprop-2-enylide		514.9	511.9	± 2.2	kJ/mol	39.0565 ± 0.0024	20829-57-6*0
n-Decane		-272.71	-300.25	± 0.79	kJ/mol	142.2817 ± 0.0081	124-18-5*500
Poly(vinylchloride)		-84.6	-94.0	± 1.3	kJ/mol	62.4979 ± 0.0018	9002-86-2*500
Trioxidanyl		25.36	23.27	± 0.13	kJ/mol	49.00614 ± 0.00090	12500-78-6*0
1,1-Dichloroethene			-23.45	± 0.51	kJ/mol	96.9427 ± 0.0024	75-35-4*500
1,2-Propadien-1-ylium-1-yl-3-ylidene		1957.21	1965.08	± 0.82	kJ/mol	36.0316 ± 0.0024	118090-85-0*1
Nitrosyl nitrite anion		-103.0	-106.2	± 2.8	kJ/mol	76.01223 ± 0.00091	122413-35-81
Dichloromethane			-122.75	± 0.37	kJ/mol	84.9320 ± 0.0020	75-09-2*590
Isocyanogen iodide		341.7	341.9	± 4.9	kJ/mol	152.92191 ± 0.00080	66004-32-8*0
Isopropylidene anion		282.5	268.4	± 2.0	kJ/mol	42.0803 ± 0.0024	121408-19-30
Hydraziniumyl		886.6	873.3	± 2.0	kJ/mol	32.04469 ± 0.00031	20771-51-1*0
1,5-Hexadiene			54.55	± 0.31	kJ/mol	82.1436 ± 0.0049	592-42-7*500
Tribromofluoromethane		-98.8	-122.8	± 1.5	kJ/mol	270.7211 ± 0.0031	353-54-8*0
Tribromochloromethane		85.8	62.9	± 1.5	kJ/mol	287.1754 ± 0.0032	594-15-0*0
Difluoromethylene anion		-211.12	-209.94	± 0.58	kJ/mol	50.00805 ± 0.00080	66212-40-6*0
Isocyanogen iodide anion		123.0	125.2	± 9.3	kJ/mol	152.92246 ± 0.00080	66004-32-80
Fluoromethylidyne anion		200.8	204.3	± 1.9	kJ/mol	31.00965 ± 0.00080	33412-12-3*0
Iodine monochloride		-36.511	-35.537	± 0.063	kJ/mol	162.35717 ± 0.00090	7790-99-0*510
Dihydrogen		-0.000	-0.058	± 0.000	kJ/mol	2.01588 ± 0.00014	1333-74-0*2
Difluorovinylidene		129.5	130.7	± 2.2	kJ/mol	62.0182 ± 0.0016	41895-33-4*0
Fluoroethynylium		1536.3	1541.0	± 2.3	kJ/mol	43.0193 ± 0.0016	268566-69-4*0
Cyclopropenylidene anion		544.3	543.9	± 2.2	kJ/mol	38.0485 ± 0.0024	16165-40-50
Bromoacetylene		282.0	275.5	± 1.6	kJ/mol	104.9333 ± 0.0019	593-61-3*0
Hydroxylamine			-97.1	± 2.2	kJ/mol	33.02996 ± 0.00037	7803-49-8*1000
Methanol dimer		-398.2	-418.9	± 1.4	kJ/mol	64.0837 ± 0.0018	42845-44-3*0
Trifluorine		80.6	81.8	± 2.6	kJ/mol	56.9952096 ± 0.0000015	73455-86-4*0
Bromoniumyl		1098.16	1090.31	± 0.12	kJ/mol	80.9114 ± 0.0010	12258-64-9*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
Propane cation		974.7	954.6	± 1.7	kJ/mol	44.0951 ± 0.0025	34479-70-4*0
2-Iodoethanol			-207.2	± 2.4	kJ/mol	171.9650 ± 0.0017	624-76-0*590
1,3-Butadiyne cation		1440.21	1442.07	± 0.56	kJ/mol	50.0581 ± 0.0032	55468-55-8*0
1,3,5-Hexatriynide		635.6	644.0	± 2.3	kJ/mol	73.0727 ± 0.0048	85905-65-3*0
Chlorine chlorite		177.4	175.1	± 2.2	kJ/mol	102.9042 ± 0.0019	105206-44-8*2
Carbon suboxide cation		928.7	932.3	± 1.1	kJ/mol	68.0304 ± 0.0025	151528-67-5*0
Carbon suboxide anion		-131.2	-127.7	± 2.5	kJ/mol	68.0314 ± 0.0025	109362-94-9*0
Hydrazine		57.30	50.74	± 0.18	kJ/mol	32.04524 ± 0.00031	302-01-2*500
Benzene anion		209.2	197.3	± 1.2	kJ/mol	78.1124 ± 0.0048	34562-85-1*0
Bicyclo[1.1.0]buta-1,3-dien-4-ylium-2-yl		2087.7	2097.5	± 2.3	kJ/mol	48.0423 ± 0.0032	289679-91-0*0
Bicyclo[1.1.0]buta-1,3-dien-2-yl anion		803.1	810.8	± 1.8	kJ/mol	48.0433 ± 0.0032	289679-89-6*0
o-Benzyne		625.8	616.4	± 1.1	kJ/mol	76.0960 ± 0.0048	462-80-6*1
m-Benzyne		527.5	519.0	± 1.2	kJ/mol	76.0960 ± 0.0048	1828-89-3*0
p-Benzyne cation		1423.7	1416.4	± 2.0	kJ/mol	76.0954 ± 0.0048	121058-09-1*0
p-Benzyne		587.2	577.7	± 1.2	kJ/mol	76.0960 ± 0.0048	3355-34-8*0
Toluene		19.79	12.04	± 0.31	kJ/mol	92.1384 ± 0.0056	108-88-3*500
Cyclopentadienylium		1088.43	1075.56	± 0.91	kJ/mol	65.0927 ± 0.0040	29661-18-5*0
2-Oxo-1-ethylium-1-yl		1289.4	1286.0	± 2.5	kJ/mol	42.0361 ± 0.0016	214464-96-7*11
Cycloheptene		-25.2	-46.3	± 1.7	kJ/mol	96.1702 ± 0.0057	628-92-2*500
Cycloheptatriene		154.28	145.49	± 0.96	kJ/mol	92.1384 ± 0.0056	544-25-2*500
Oxoethylidene anion		86.9	83.6	± 2.1	kJ/mol	42.0372 ± 0.0016	106543-38-8*1
Phenylethene			104.49	± 0.47	kJ/mol	104.1491 ± 0.0064	100-42-5*500
Benzonitrile		161.18	163.54	± 0.90	kJ/mol	103.1213 ± 0.0056	100-47-0*500
Isocyanobenzene		321.0	307.1	± 1.7	kJ/mol	103.1213 ± 0.0056	931-54-4*0
1,3-Butadiynyl anion		677.3	686.4	± 1.1	kJ/mol	48.0433 ± 0.0032	59158-53-1*0
Hydronium radical		-18.5	-21.5	± 2.1	kJ/mol	19.02322 ± 0.00037	12168-76-2*100
Phenol		-146.20	-162.04	± 0.65	kJ/mol	94.1112 ± 0.0048	108-95-2*500
Carbon dication		4150.473	4155.620	± 0.041	kJ/mol	12.00960 ± 0.00080	16092-61-8*0
Anisole			-117.45	± 0.62	kJ/mol	108.1378 ± 0.0056	100-66-3*500
Benzaldehyde		-85.59	-86.66	± 0.90	kJ/mol	106.1219 ± 0.0056	100-52-7*500
Acetophenone			-139.3	± 1.1	kJ/mol	120.1485 ± 0.0064	98-86-2*500
1-Phenylethenol		-8.7	-32.5	± 2.1	kJ/mol	120.1485 ± 0.0064	4383-15-7*0
p-Tolualdehyde			-125.8	± 1.3	kJ/mol	120.1485 ± 0.0064	104-87-0*500
2-Cyclopropyn-1-ylidenemethyliumyl		2239.6	2247.5	± 2.3	kJ/mol	48.0423 ± 0.0032	289679-92-1*0
o-Tolualdehyde			-118.9	± 1.1	kJ/mol	120.1485 ± 0.0064	529-20-4*500
Fluorobenzene anion		-15.3	-27.1	± 1.6	kJ/mol	96.1029 ± 0.0048	34561-55-2*0
Hexafluorobenzene anion		-992.6	-994.9	± 3.5	kJ/mol	186.0552 ± 0.0048	37551-90-9*0
2-Propen-3-ylium-1-ylidyne		1791.2	1792.8	± 2.6	kJ/mol	38.0474 ± 0.0024	161054-36-0*0
m-Chlorophenylium		1161.3	1151.2	± 2.6	kJ/mol	111.5481 ± 0.0049	127983-85-1*0
p-Chlorophenylium		1148.6	1139.1	± 2.5	kJ/mol	111.5481 ± 0.0049	42766-43-8*0
o-Chlorophenylium		1167.9	1158.6	± 2.5	kJ/mol	111.5481 ± 0.0049	137963-70-3*0
Ammonium hydroxide			-366.31	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*844
Peroxyhypochlorite		-252.78	-251.75	± 0.34	kJ/mol	67.4520 ± 0.0011	224299-14-3*0
Iodobenzene cation		1023.45	1008.01	± 0.99	kJ/mol	204.0078 ± 0.0048	38406-85-8*0
Chlorodioxidanyl		100.36	99.27	± 0.34	kJ/mol	67.4515 ± 0.0011	17376-09-9*0
Ammonium hydroxide			-363.82	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*801
Nitrobenzene			7.1	± 1.4	kJ/mol	123.1094 ± 0.0049	98-95-3*500
Pyridine		102.23	100.20	± 0.38	kJ/mol	79.0999 ± 0.0040	110-86-1*500
Carbonate		-225.2	-228.4	± 2.5	kJ/mol	60.0100 ± 0.0012	3812-32-6*0
Propenediylidene anion		588.9	590.1	± 2.3	kJ/mol	38.0485 ± 0.0024	161054-36-00
Nitromethane		-114.10	-112.92	± 0.40	kJ/mol	61.0401 ± 0.0010	75-52-5*500
Ammonium hydroxide			-364.67	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*803
2,2,4-Trimethylpentane		-224.2	-258.7	± 1.5	kJ/mol	114.2285 ± 0.0065	540-84-1*500
cis-1,2-Diiodoethene	$C(\I)=C\I$	217.46	209.18	± 0.35	kJ/mol	279.8462 ± 0.0016	590-26-1*0
trans-1,2-Diiodoethene	$C(\I)=C/I$	215.12	207.72	± 0.35	kJ/mol	279.8462 ± 0.0016	590-27-2*0
Norbornadiene			209.3	± 1.1	kJ/mol	92.1384 ± 0.0056	121-46-0*500
2,3-Butanedione			-365.57	± 0.53	kJ/mol	86.0892 ± 0.0033	431-03-8*500
Paraformaldehyde			-176.4	± 1.5	kJ/mol	30.02598 ± 0.00087	30525-89-4*500
Succinic acid		-801.3	-823.5	± 2.7	kJ/mol	118.0880 ± 0.0034	110-15-6*0
Hydrochlorate ion		-25.2	-24.2	± 2.5	kJ/mol	36.46119 ± 0.00090	63099-75-2*0
1,2-Diiodoethane		87.84	73.18	± 0.90	kJ/mol	281.8621 ± 0.0016	624-73-7*0
1,2-Diiodoethane			9.31	± 0.60	kJ/mol	281.8621 ± 0.0016	624-73-7*500
2-Butanone		-267.73	-273.22	± 0.79	kJ/mol	72.1057 ± 0.0033	78-93-3*500
Acrolein cation		919.99	909.85	± 0.79	kJ/mol	56.0627 ± 0.0024	84005-05-0*1
Acrolein anion		-71.8	-81.9	± 3.1	kJ/mol	56.0638 ± 0.0024	23555-87-5*2
Acrolein			-95.60	± 0.96	kJ/mol	56.0633 ± 0.0024	107-02-8*500
Hydroxymethoxy		-159.56	-169.42	± 0.85	kJ/mol	47.0333 ± 0.0010	72144-78-6*0
Tetrazete		764.9	759.0	± 1.8	kJ/mol	56.02696 ± 0.00028	42851-09-2*0
1-Oxo-2-propenylium		772.8	765.9	± 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
Ammonium hydroxide			-365.13	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*805
3-Oxo-1-propenylium		1197.7	1192.0	± 3.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*121
Tetraazatetrahedrane		763.7	757.3	± 1.7	kJ/mol	56.02696 ± 0.00028	12596-63-3*0
Ethenedione anion		-149.7	-147.1	± 1.7	kJ/mol	56.0207 ± 0.0017	77783-15-4*0
Deuterium hydride		0.328	0.319	± 0.000	kJ/mol	3.022042 ± 0.000070	13983-20-5*0
Urea		-317.74	-333.33	± 0.12	kJ/mol	60.05534 ± 0.00091	57-13-6*500
1-Methyl-1-ethylium-1-yl		1058.3	1045.7	± 1.9	kJ/mol	42.0792 ± 0.0024	121408-19-3*0
Ammonium hydroxide			-366.25	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*850
Formamide			-251.04	± 0.28	kJ/mol	45.04066 ± 0.00088	75-12-7*500
Hydroxymethyleneoxonium		792.94	782.80	± 0.63	kJ/mol	47.0328 ± 0.0010	77144-12-8*0
Acetamide			-315.88	± 0.53	kJ/mol	59.0672 ± 0.0017	60-35-5*500
Ethyl hydroperoxide			-209.	± 20.	kJ/mol	62.0678 ± 0.0018	3031-74-1*500
Hydrogen difluoride cation		1267.6	1265.4	± 4.1	kJ/mol	39.004198 ± 0.000070	126950-54-71
Acrylonitrile		446.4	441.0	± 1.7	kJ/mol	53.0627 ± 0.0024	107-13-1*2
Acrylonitrile		146.36	154.03	± 0.77	kJ/mol	53.0627 ± 0.0024	107-13-1*500
Isocyanoethene		544.1	539.2	± 1.8	kJ/mol	53.0627 ± 0.0024	14668-82-7*2
1-Isocyanoethylidene		527.9	523.2	± 1.1	kJ/mol	53.0627 ± 0.0024	498544-34-60
Peroxynitrous acid		-5.73	-11.56	± 0.35	kJ/mol	63.01288 ± 0.00091	14691-52-2*0
Peroxyhypochlorous acid cation		1030.4	1024.5	± 2.5	kJ/mol	68.4589 ± 0.0011	67952-07-21
Dioxodiazoxane		125.7	120.4	± 2.1	kJ/mol	76.01168 ± 0.00091	122413-35-8*3
Hydrogen fluoride			-321.95	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*822
Hydrogen fluoride			-321.96	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*905
Tetraoxygen		104.4	102.4	± 3.5	kJ/mol	63.9976 ± 0.0012	12596-83-7*11
Vinylacetylene			266.3	± 2.1	kJ/mol	52.0746 ± 0.0032	689-97-4*500
Peroxyhypochlorous acid anion		-32.2	-33.9	± 2.6	kJ/mol	68.4600 ± 0.0011	67952-08-32
Hydroxyoxoammoniumyl		984.1	977.7	± 1.8	kJ/mol	47.01293 ± 0.00061	80371-48-8*1
Cyclobutane			3.89	± 0.39	kJ/mol	56.1063 ± 0.0032	287-23-0*590
Ammonium hydroxide			-366.02	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*855
Vinylvinylidene		690.5	684.4	± 2.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*11
Methylcyclopropane			1.93	± 0.59	kJ/mol	56.1063 ± 0.0032	594-11-6*590
1-Buten-3-ynylium		1483.0	1480.5	± 1.7	kJ/mol	51.0661 ± 0.0032	84654-85-3*2
Nitrous acid anion		-105.82	-110.45	± 0.78	kJ/mol	47.01403 ± 0.00061	256393-36-9*2
Oxygen difluoride cation		1292.12	1289.59	± 0.66	kJ/mol	53.99566 ± 0.00030	39432-25-2*0
1-Ethenylium-1-yl		1507.1	1507.1	± 2.1	kJ/mol	26.0367 ± 0.0016	80541-07-7*0
2-Cyclopropen-1-ylidenemethylium		1433.1	1429.3	± 1.9	kJ/mol	51.0661 ± 0.0032	112936-36-4*1
Ammonium hydroxide			-365.43	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*807
1,3-Cyclobutadien-1-ylium		1473.0	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
Dioxidanyl dimer		-8.27	-17.84	± 0.50	kJ/mol	66.0135 ± 0.0012	240125-82-0*1
Cyclobutenylium		1038.6	1025.5	± 2.8	kJ/mol	53.0820 ± 0.0032	12316-90-4*0
Butyraldehyde		-235.83	-239.35	± 0.84	kJ/mol	72.1057 ± 0.0033	123-72-8*500
Perchloryl cation		1252.1	1246.4	± 2.5	kJ/mol	83.4504 ± 0.0013	23594-88-9*0
Disilicon cation		1349.8	1353.4	± 2.7	kJ/mol	56.17045 ± 0.00060	12597-36-3*0
Dioxosilane cation		946.2	946.2	± 2.8	kJ/mol	60.08375 ± 0.00067	59458-81-0*0
Silicate		-477.5	-478.3	± 2.6	kJ/mol	60.08485 ± 0.00067	53095-83-3*0
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
Trichlorine		125.3	125.8	± 2.0	kJ/mol	106.3581 ± 0.0027	11094-65-8*0
Oxosilicate		-106.1	-104.9	± 2.6	kJ/mol	44.08545 ± 0.00042	12503-59-2*0
Silicon carbide		-71.9	-72.9	± 1.4	kJ/mol	40.09620 ± 0.00085	409-21-2*502
Ammonium hydroxide			-365.86	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*861
Fluorosilylidyne anion		-139.0	-137.6	± 1.8	kJ/mol	47.08445 ± 0.00030	11080-58-3*0
Silane cation		1104.7	1097.5	± 1.6	kJ/mol	32.11671 ± 0.00041	34826-51-2*0
Silylium		989.74	984.17	± 0.92	kJ/mol	31.10877 ± 0.00037	41753-67-7*0
Difluorodioxidanium		1283.7	1279.1	± 2.3	kJ/mol	69.99506 ± 0.00060	7783-44-01
Hydrazoic acid cation		1333.74	1328.07	± 0.83	kJ/mol	43.02761 ± 0.00022	58852-14-5*0
Silylidyne anion		250.0	251.2	± 1.1	kJ/mol	29.09399 ± 0.00031	68865-96-3*0
Disilanylium		981.7	970.3	± 2.5	kJ/mol	61.21015 ± 0.00069	86860-82-4*0
1,2-Butadienylium		1315.5	1307.4	± 1.7	kJ/mol	53.0820 ± 0.0032	65114-67-21
1-Disilanylium-1-yl		1124.0	1116.4	± 2.2	kJ/mol	60.20221 ± 0.00066	108492-64-4*0
Formic acid			-425.47	± 0.45	kJ/mol	46.0254 ± 0.0010	64-18-6*800
Di-mu-hydrodihydrodisilicon cation		1194.2	1184.5	± 3.4	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
Trihydrogen		756.931	754.146	± 0.015	kJ/mol	3.02382 ± 0.00021	12184-91-7*2
1,3-Butadienylium		1255.9	1246.5	± 2.3	kJ/mol	53.0820 ± 0.0032	86181-69-3*1
Dioxygen difluoride		75.1	71.6	± 3.6	kJ/mol	69.99561 ± 0.00060	183051-89-0*0
Ammonium hydroxide			-366.00	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*815
2,4-Hexadiyne		319.10	312.74	± 0.97	kJ/mol	78.1118 ± 0.0048	2809-69-0*500
Trimethylenecyclopropane		454.2	441.4	± 1.8	kJ/mol	78.1118 ± 0.0048	3227-90-5*0
3,4-Bis(methylene)cyclobutene		355.6	341.0	± 1.8	kJ/mol	78.1118 ± 0.0048	5291-90-7*0
Ammonium hydroxide			-366.20	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*818
1-Ethynylcyclobutene		402.3	388.0	± 1.8	kJ/mol	78.1118 ± 0.0048	813466-25-0*0
Hydrogen peroxide		-193.110	-187.293	± 0.077	kJ/mol	34.01468 ± 0.00062	7722-84-1*500
3-Methyl-1,2-pentadien-4-yne		414.6	403.4	± 2.3	kJ/mol	78.1118 ± 0.0048	813466-14-7*0
1-Ethynyl-2-propyn-1-ylidene		787.5	792.5	± 2.1	kJ/mol	62.0694 ± 0.0040	882068-94-2*21
1-Ethynyl-2-propyn-1-ylidene		796.1	801.0	± 2.6	kJ/mol	62.0694 ± 0.0040	882068-94-2*22
1,3-Pentadiyne-1.5-diyl		783.8	787.3	± 2.1	kJ/mol	62.0694 ± 0.0040	117992-81-1*0
1,3-Pentadiyne			385.0	± 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
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		94.76	75.17	± 0.55	kJ/mol	128.1705 ± 0.0080	91-20-3*500
Ammonium hydroxide			-366.33	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*822
Oxadiazirine cation		1509.9	1507.2	± 2.4	kJ/mol	44.01233 ± 0.00033	227934-45-40
Oxygen difluoride anion		-202.0	-201.9	± 2.7	kJ/mol	53.99675 ± 0.00030	7783-41-70
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
Hydrazoic acid anion		309.1	302.8	± 2.3	kJ/mol	43.02871 ± 0.00022	203264-98-6*1
Aniline		37.28	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
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*828
Sulfur trioxide			-440.90	± 0.30	kJ/mol	80.0642 ± 0.0061	7446-11-9*590
Sulfanylium		1148.36	1148.36	± 0.19	kJ/mol	33.0734 ± 0.0060	12273-42-6*0
Oxygen atom hexacation		42035.28	42037.14	± 0.12	kJ/mol	15.99611 ± 0.00030	14158-22-6*0
Sulfuric acid			-887.10	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*824
Isoprene			48.96	± 0.69	kJ/mol	68.1170 ± 0.0040	78-79-5*500
NON cation		1444.0	1444.2	± 2.8	kJ/mol	44.01233 ± 0.00033	227934-46-50
Sulfur hydroxide oxide cation		659.0	648.2	± 3.5	kJ/mol	97.0710 ± 0.0061	12337-07-42
Sulfurous acid		-511.25	-520.75	± 0.89	kJ/mol	82.0801 ± 0.0061	7782-99-2*0
Sulfurous acid			-606.49	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*1000
Hydrogen sulfite			-631.83	± 0.15	kJ/mol	81.0727 ± 0.0061	15181-46-1*1000
Sulfur dioxide - hydroxyl complex		-266.0	-268.1	± 2.2	kJ/mol	81.0721 ± 0.0061	32750-86-0100
NON anion		495.3	492.8	± 2.5	kJ/mol	44.01343 ± 0.00033	227934-47-60
Peroxychlorous acid		102.7	96.9	± 2.4	kJ/mol	84.4588 ± 0.0013	177778-92-6*2
Platinum atom cation		1427.8	1428.3	± 1.7	kJ/mol	195.0775 ± 0.0020	20561-56-2*0
Platinum dimer		823.5	822.5	± 3.9	kJ/mol	390.1560 ± 0.0040	12596-95-1*0
Platinum hydride		451.6	450.7	± 3.8	kJ/mol	196.0859 ± 0.0020	13966-55-7*0
Platinum hydride cation		1363.1	1382.3	± 4.9	kJ/mol	196.0854 ± 0.0020	87882-39-1*0
Hydrogen atom		-37.0	-38.7	± 1.1	kJ/mol	1.007940 ± 0.000070	12385-13-6*1000000
Hydrogen atom		-33.4	-35.1	± 1.5	kJ/mol	1.007940 ± 0.000070	12385-13-6*1000004
Diazomethylium		1458.9	1456.8	± 2.2	kJ/mol	41.03157 ± 0.00082	271249-81-1*2
Nitride		1879.1	1881.0	± 4.4	kJ/mol	14.008386 ± 0.000070	18851-77-9*0
Diazirinylium		1384.8	1381.2	± 2.1	kJ/mol	41.03157 ± 0.00082	77116-26-8*2
Iminomethylimidogen cation		1677.6	1676.4	± 2.3	kJ/mol	41.03157 ± 0.00082	150296-30-31
Iminomethylimidogen anion		405.3	402.0	± 2.5	kJ/mol	41.03267 ± 0.00082	150296-30-3*1
Carbon monoxide		-113.799	-110.519	± 0.026	kJ/mol	28.01010 ± 0.00085	630-08-0*2
Ammonia			-80.06	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*861
Hypochloroperoxoous acid, hydroxy ester		48.7	41.8	± 2.5	kJ/mol	84.4588 ± 0.0013	928652-99-7*2
(Iminomethyl)imidogen		420.1	413.3	± 2.9	kJ/mol	42.04006 ± 0.00082	87570-07-8*1
Chlorine atom pentacation		19147.	19149.	± 11.	kJ/mol	35.44996 ± 0.00090	20337-89-7*0
Oxygen atom dication		4949.458	4953.000	± 0.013	kJ/mol	15.99830 ± 0.00030	14127-63-0*0
Ammonia			-80.45	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*850
Fluorosyl fluoride		227.	225.	± 21.	kJ/mol	53.99621 ± 0.00030	86825-57-2*2
Ketene		-45.33	-48.39	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*21
Tetraoxodinitrate anion		-184.6	-187.8	± 2.4	kJ/mol	92.0116 ± 0.0012	63552-02-3*0
Deuterium molecule cation		1492.286	1492.361	± 0.000	kJ/mol	4.02765497609 ± 0.00000000080	12184-84-8*0
Hydrogen peroxide		-129.422	-135.408	± 0.058	kJ/mol	34.01468 ± 0.00062	7722-84-1*2
Trioxygen difluoride		112.5	107.3	± 1.1	kJ/mol	85.99501 ± 0.00090	16829-28-0*0
Fluorine atom pentacation		30617.6	30619.4	± 1.8	kJ/mol	18.99566030 ± 0.00000050	14701-05-4*0
Isocyanogen bromide anion		105.1	101.9	± 4.6	kJ/mol	105.9220 ± 0.0013	238754-53-50
Ethynylene		820.006	826.578	± 0.086	kJ/mol	24.0214 ± 0.0016	12070-15-4*2
Difluorine cation		1514.301	1514.475	± 0.013	kJ/mol	37.9962578 ± 0.0000010	12184-86-0*0
1,2-Propadien-1-ylium-1-yl-3-ylidene		1939.2	1947.1	± 1.3	kJ/mol	36.0316 ± 0.0024	118090-85-0*0
Trihydrogen		745.878	743.094	± 0.062	kJ/mol	3.02382 ± 0.00021	12184-91-7*1
Ammonia			-80.50	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*844
2-Propen-1-ylium-1-ylidene		1373.2	1369.6	± 2.0	kJ/mol	39.0554 ± 0.0024	88000-25-3*0
Fluorine atom hexacation		45781.5	45783.3	± 1.8	kJ/mol	18.99511172 ± 0.00000050	14701-04-3*0
Tetrabromomethane			59.2	± 1.3	kJ/mol	331.6267 ± 0.0041	558-13-4*500
Tetraiodomethane			392.5	± 8.0	kJ/mol	519.62858 ± 0.00081	507-25-5*500
Bromomethane		-56.24	-59.25	± 0.21	kJ/mol	94.9385 ± 0.0013	74-83-9*590
Oxygen atom trication		10249.929	10252.880	± 0.018	kJ/mol	15.99775 ± 0.00030	14127-64-1*0
Hydrogen iodide			-56.644	± 0.089	kJ/mol	127.912410 ± 0.000076	10034-85-2*958
Oxygen atom tetracation		17719.207	17721.064	± 0.025	kJ/mol	15.99721 ± 0.00030	14127-65-2*0
Acetylene anion		356.9	356.7	± 1.9	kJ/mol	26.0378 ± 0.0016	50443-89-5*0
Methyl acetate		-394.16	-413.03	± 0.57	kJ/mol	74.0785 ± 0.0025	79-20-9*0
Hydroxylamine		-33.09	-43.45	± 0.42	kJ/mol	33.02996 ± 0.00037	7803-49-8*0
1-Propen-1-yl-3-ylidene		656.7	653.3	± 1.1	kJ/mol	39.0559 ± 0.0024	84654-90-0*1
Water trimer		-762.65	-776.75	± 0.20	kJ/mol	54.04584 ± 0.00099	31014-12-7*0
Ethyl bromide		-55.38	-90.91	± 0.25	kJ/mol	108.9651 ± 0.0019	74-96-4*500
Tribromine cation		1036.3	1013.6	± 2.5	kJ/mol	239.7115 ± 0.0030	33105-86-1*0
Vinyl iodide		139.7	130.8	± 1.2	kJ/mol	153.9497 ± 0.0016	593-66-8*0
Ammonium hydroxide			-366.687	± 0.059	kJ/mol	35.04584 ± 0.00047	1336-21-6*1000
Methylaminyliumyl		1388.2	1381.9	± 2.2	kJ/mol	29.04071 ± 0.00083	56924-51-7*1
Difluorovinylidene cation		1181.6	1183.1	± 2.3	kJ/mol	62.0177 ± 0.0016	268566-71-8*0
Hydroxylamine			-107.47	± 0.60	kJ/mol	33.02996 ± 0.00037	7803-49-8*500
Hydrogen fluoride			-320.70	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*805
Methyl formate		-346.92	-359.96	± 0.64	kJ/mol	60.0520 ± 0.0017	107-31-3*0
Ethyl formate		-375.1	-393.8	± 1.0	kJ/mol	74.0785 ± 0.0025	109-94-4*0
Nitrogen atom anion		488.2	490.5	± 2.3	kJ/mol	14.007289 ± 0.000070	17778-87-9*0
Oxygen atom pentacation		28708.788	28710.645	± 0.053	kJ/mol	15.99666 ± 0.00030	14127-66-3*0
Nitrogen atom dication		4728.998	4731.826	± 0.024	kJ/mol	14.005643 ± 0.000070	17439-59-7*0
Chloro(chlorooxy)methylene		101.1	104.7	± 4.8	kJ/mol	98.9155 ± 0.0020	479587-31-0*12
Hydrazoic acid			272.70	± 0.48	kJ/mol	43.02816 ± 0.00022	7782-79-8*800
Chlorine atom hexacation		28501.	28503.	± 11.	kJ/mol	35.44941 ± 0.00090	22541-73-7*0
Chlorine atom		119.621	121.228	± 0.0011	kJ/mol	35.45270 ± 0.00090	22537-15-1*1
1,3,5-Hexatriynylium		1952.5	1961.4	± 7.6	kJ/mol	73.0716 ± 0.0048	81932-75-4*2
Carbide		2709.5	2714.7	± 2.7	kJ/mol	12.01289 ± 0.00080	12385-15-8*0
Carbon suboxide		-131.2	-116.2	± 1.1	kJ/mol	68.0309 ± 0.0025	504-64-3*500
2,2-Dimethylbutane		-187.96	-213.68	± 0.75	kJ/mol	86.1754 ± 0.0049	75-83-2*500
1-Hydroxyethyl		-42.72	-56.15	± 0.46	kJ/mol	45.0605 ± 0.0017	2348-46-1*0
Hydrogen peroxide cation		931.03	924.17	± 0.98	kJ/mol	34.01413 ± 0.00062	12325-10-9*22
Bicyclo[1.1.0]buta-1,3-diene-2,4-diyl		1047.18	1054.78	± 0.68	kJ/mol	48.0428 ± 0.0032	12184-80-4*2
m-Benzyne		615.1	605.7	± 1.4	kJ/mol	76.0960 ± 0.0048	1828-89-3*1
mu-Oxodichlorine cation		1130.45	1126.84	± 0.63	kJ/mol	86.9043 ± 0.0018	51174-96-0*0
Dioxofluorine cation		1667.0	1664.8	± 2.8	kJ/mol	50.99665 ± 0.00060	223566-05-0*0
Acetoxy		-182.13	-190.85	± 0.80	kJ/mol	59.0440 ± 0.0017	13799-69-4*0
1,3-Butadiyn-4-ylium-1-yl		2109.9	2120.5	± 2.8	kJ/mol	48.0423 ± 0.0032	124708-46-9*0
Hydrazine monohydrate			-242.58	± 0.19	kJ/mol	50.06052 ± 0.00053	7803-57-8*500
2-Oxo-1-ethylium-1-yl		1292.1	1288.7	± 2.4	kJ/mol	42.0361 ± 0.0016	214464-96-7*12
Tropylide		261.6	245.2	± 2.0	kJ/mol	91.1310 ± 0.0056	34464-18-1*0
Trioxirane cation		1444.5	1442.3	± 2.2	kJ/mol	47.99765 ± 0.00090	153851-84-40
Oxoethylidene anion		92.3	89.0	± 2.3	kJ/mol	42.0372 ± 0.0016	106543-38-8*2
Propylidene		349.52	335.76	± 0.92	kJ/mol	42.0797 ± 0.0024	6700-78-3*1
2-Chloro ozone		265.7	265.1	± 3.7	kJ/mol	83.4509 ± 0.0013	141801-66-30
1,3-Butadiyne-1,4-diyl		1052.28	1062.26	± 0.64	kJ/mol	48.0428 ± 0.0032	78015-07-3*1
Propionic acid		-435.90	-453.79	± 0.60	kJ/mol	74.0785 ± 0.0025	79-09-4*0
Dinitrogen dimer		-0.88	0.84	± 0.67	kJ/mol	56.02696 ± 0.00028	154680-01-0*0
Carbon trication		8770.941	8776.088	± 0.047	kJ/mol	12.00905 ± 0.00080	14067-06-2*0
Acetylene		599.2	599.0	± 1.5	kJ/mol	26.0373 ± 0.0016	74-86-2*11
2-Methyl-2-propanol			-358.9	± 1.9	kJ/mol	74.1216 ± 0.0033	75-65-0*590
2,3-Dimethylbutane		-182.45	-206.96	± 0.81	kJ/mol	86.1754 ± 0.0049	79-29-8*500
Hydrogen peroxide cation		897.28	890.30	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*11
Water		-238.905	-241.808	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*2
Formaldehyde		-105.380	-109.221	± 0.095	kJ/mol	30.02598 ± 0.00087	50-00-0*21
Trihydrogen cation		1110.304	1106.697	± 0.013	kJ/mol	3.02327 ± 0.00021	28132-48-1*2
Methylene		391.079	391.625	± 0.094	kJ/mol	14.02658 ± 0.00081	2465-56-7*0
Trihydrogen		215.9	218.3	± 1.1	kJ/mol	3.02382 ± 0.00021	12184-91-7*100
Fluorine atom heptacation		63649.3	63651.1	± 1.8	kJ/mol	18.99456314 ± 0.00000050	14700-77-7*0
Hydrogen bromide			-120.24	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*952
Polyoxymethylene			-170.86	± 0.21	kJ/mol	30.02598 ± 0.00087	9002-81-7*500
Iodine monochloride			-24.048	± 0.063	kJ/mol	162.35717 ± 0.00090	7790-99-0*590
Succinic acid		-918.49	-940.22	± 0.12	kJ/mol	118.0880 ± 0.0034	110-15-6*500
Formaldehyde			-165.65	± 0.22	kJ/mol	30.02598 ± 0.00087	50-00-0*1000
1,2-Dibromoethane			-80.1	± 1.2	kJ/mol	187.8612 ± 0.0026	106-93-4*500
Ammonia			-80.22	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*855
Ammonia			-79.33	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*807
Chlorodioxidenium		1215.1	1212.9	± 6.3	kJ/mol	67.4510 ± 0.0011	64710-10-7*0
1,3-Butadien-2-ol		-42.6	-59.2	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*21
1,3-Butadien-2-ol		-53.4	-68.6	± 1.5	kJ/mol	70.0898 ± 0.0032	59120-04-6*1
Chlorine atom dication		3668.474	3670.081	± 0.013	kJ/mol	35.45160 ± 0.00090	15723-23-6*0
Fluorine atom dication		5132.472	5134.257	± 0.021	kJ/mol	18.99730604 ± 0.00000050	14701-07-6*0
Ammonia			-80.58	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*833
Acrolein		-55.14	-65.23	± 0.64	kJ/mol	56.0633 ± 0.0024	107-02-8*0
2-Iminoethyl		221.7	210.4	± 1.8	kJ/mol	42.0599 ± 0.0016	73843-90-0*1
2-Iminoethyl anion		110.7	100.2	± 2.3	kJ/mol	42.0604 ± 0.0016	73843-87-5*2
1-Oxo-2-propenide		83.6	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		1158.8	1154.2	± 3.0	kJ/mol	55.0548 ± 0.0024	101705-89-9*1
3-Oxo-1-propenyl		190.96	184.98	± 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	23.8	± 3.1	kJ/mol	55.0559 ± 0.0024	135924-69-5*21
1,2-Propadien-1-one cation		1012.7	1011.3	± 1.8	kJ/mol	54.0468 ± 0.0024	87612-93-9*0
2-Propynal cation		1168.3	1167.2	± 1.3	kJ/mol	54.0468 ± 0.0024	100815-70-1*0
2-Iminoethylium		1108.3	1097.6	± 2.9	kJ/mol	42.0594 ± 0.0016	73843-91-1*2
Formylethynyl cation		1540.0	1541.9	± 2.7	kJ/mol	53.0389 ± 0.0024	85905-64-22
Formylethynyl cation		1540.6	1542.8	± 2.8	kJ/mol	53.0389 ± 0.0024	85905-64-21
(E)-2-Iminoethylium		1108.3	1094.9	± 2.9	kJ/mol	42.0594 ± 0.0016	91127-33-2*0
Dioxofluorine anion		155.9	154.4	± 2.5	kJ/mol	50.99775 ± 0.00060	175861-93-50
(Z)-2-Iminoethylium		1151.8	1143.0	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-34-3*0
(Z)-2-Iminoethylium		1151.8	1143.0	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-34-3*11
(Hydroxyimino)methyl		258.8	252.7	± 2.0	kJ/mol	44.03272 ± 0.00087	206442-92-4*2
Formylimidogen		245.3	242.1	± 3.3	kJ/mol	43.02478 ± 0.00086	42288-92-6*2
Hydrazoic acid			257.71	± 0.48	kJ/mol	43.02816 ± 0.00022	7782-79-8*1000
Ammonia			-79.63	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*809
Cyanoacetylene cation		1495.55	1497.85	± 0.58	kJ/mol	51.0462 ± 0.0024	85398-68-1*0
Ammonia			-80.57	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*839
Isocyanoacetylene cation		1567.8	1570.4	± 1.3	kJ/mol	51.0462 ± 0.0024	145076-03-5*0
Carbon pentacation		52824.603	52829.750	± 0.050	kJ/mol	12.00796 ± 0.00080	14280-11-6*0
sec-Butylium		792.7	769.1	± 1.6	kJ/mol	57.1137 ± 0.0033	16548-59-7*0
Cyanoethynylium		1867.6	1874.3	± 3.2	kJ/mol	50.0383 ± 0.0024	104233-69-4*0
Ammonia			-80.16	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*815
Carbon hexacation		100101.758	100106.904	± 0.050	kJ/mol	12.00741 ± 0.00080	16249-02-8*0
Fluorine atom octacation		155686.5	155688.3	± 1.8	kJ/mol	18.99401456 ± 0.00000050	15721-58-1*0
1-Propenylium		1233.8	1223.3	± 2.0	kJ/mol	41.0713 ± 0.0024	50457-58-4*1
Oxygen atom octacation		197447.75	197449.60	± 0.12	kJ/mol	15.99501 ± 0.00030	21450-98-6*0
Ammonia			-78.02	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*803
3-Imino-2-propen-1-ylidene		530.7	526.3	± 1.2	kJ/mol	53.0627 ± 0.0024	916765-05-4*1
2-(Methylidyneamino)ethenyl		600.7	596.4	± 1.2	kJ/mol	53.0627 ± 0.0024	123416-74-0*1
Nitrosyl nitrate		60.4	52.5	± 1.9	kJ/mol	92.0111 ± 0.0012	15969-55-8*2
Hydroxymethylene		112.71	108.95	± 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
Ammonia			-78.87	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*805
Tetraoxygen		69.8	65.1	± 4.4	kJ/mol	63.9976 ± 0.0012	12596-83-7*21
Tetraoxygen		399.0	393.4	± 3.9	kJ/mol	63.9976 ± 0.0012	12596-83-7*23
Tetraoxygen		465.6	459.6	± 4.2	kJ/mol	63.9976 ± 0.0012	12596-83-7*24
Nitrogen atom trication		9306.69	9308.55	± 0.23	kJ/mol	14.005094 ± 0.000070	18396-22-0*0
1-Hydroperoxyethylium		690.5	675.6	± 1.5	kJ/mol	61.0594 ± 0.0017	126898-98-42
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	579.4	± 2.2	kJ/mol	52.0746 ± 0.0032	50682-90-1*0
Hydroxyoxoammoniumyl		1014.8	1008.5	± 2.0	kJ/mol	47.01293 ± 0.00061	80371-48-8*2
Nitrous acid anion		-105.4	-109.4	± 1.8	kJ/mol	47.01403 ± 0.00061	256393-36-9*1
Oxoniumyl ion		978.494	975.590	± 0.024	kJ/mol	18.01473 ± 0.00033	56583-62-1*1
But-3-en-1-yn-1-ide		559.0	558.3	± 2.2	kJ/mol	51.0672 ± 0.0032	58870-47-6*1
1-Propenylide		210.5	199.3	± 2.0	kJ/mol	41.0723 ± 0.0024	65887-20-9*1
2-Hydroperoxyethyl		65.1	51.3	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*11
2-Aminoethenylium		1117.9	1106.8	± 2.4	kJ/mol	42.0594 ± 0.0016	64724-21-6*11
2-Aminoethenyl anion		242.0	231.3	± 2.6	kJ/mol	42.0604 ± 0.0016	64724-21-61
Peroxyhypochlorous acid anion		-2.8	-3.3	± 2.6	kJ/mol	68.4600 ± 0.0011	67952-08-31
Silicon atom dication		2813.97	2816.95	± 0.56	kJ/mol	28.08440 ± 0.00030	14175-55-4*0
Silicon atom trication		6045.56	6048.54	± 0.56	kJ/mol	28.08385 ± 0.00030	14175-56-5*0
Trioxodinitrate anion		-87.3	-93.0	± 2.2	kJ/mol	76.01223 ± 0.00091	194856-62-7*1
Carbonic acid			-698.670	± 0.028	kJ/mol	62.0248 ± 0.0012	463-79-6*1000
Difluorodioxidanium		1287.2	1283.0	± 2.3	kJ/mol	69.99506 ± 0.00060	7783-44-02
Dioxosilane		-901.5	-906.3	± 1.4	kJ/mol	60.08430 ± 0.00067	7631-86-9*515
Oxosilyliumyl		1022.0	1023.1	± 2.9	kJ/mol	44.08435 ± 0.00042	12359-18-1*0
Tribromide			-129.17	± 0.22	kJ/mol	239.7125 ± 0.0030	14522-80-6*800
Nitrogen atom tetracation		16781.74	16783.61	± 0.23	kJ/mol	14.004546 ± 0.000070	14452-70-1*0
2-Hydroxyethylium		1024.7	1012.2	± 2.0	kJ/mol	45.0600 ± 0.0017	38607-31-7*1
Deuteride		146.991	148.904	± 0.0021	kJ/mol	2.01465035791 ± 0.00000000040	14452-69-8*0
Fluorine atom		77.254	79.039	± 0.017	kJ/mol	18.99840320 ± 0.00000050	14762-94-8*1
Acetaldehyde		-186.92	-191.64	± 0.29	kJ/mol	44.0526 ± 0.0017	75-07-0*500
Oxonium		605.89	599.14	± 0.17	kJ/mol	19.02267 ± 0.00037	13968-08-6*2
Water		-286.274	-292.715	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*510
Chlorine trifluoride cation		1053.5	1049.2	± 2.3	kJ/mol	92.44736 ± 0.00090	478167-77-0*0
mu-Hydrotetrahydrodisilicon cation		981.7	969.0	± 2.8	kJ/mol	61.21015 ± 0.00069	160896-65-1*0
Di-mu-hydrotrihydrodisilicon cation		1033.8	1020.5	± 2.8	kJ/mol	61.21015 ± 0.00069	160896-65-10
Formic acid			-425.37	± 0.45	kJ/mol	46.0254 ± 0.0010	64-18-6*1000
Disilene anion		178.4	170.0	± 3.1	kJ/mol	60.20331 ± 0.00066	157379-08-3*0
Ammonia			-80.38	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*818
Silylsilylene anion		160.1	151.4	± 3.1	kJ/mol	60.20331 ± 0.00066	286949-98-2*0
Silylsilylene		381.2	372.4	± 2.6	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
mu-Hydrotrihydrodisilicon cation		1160.0	1151.9	± 2.6	kJ/mol	60.20221 ± 0.00066	497967-55-20
Nitrogen atom pentacation		26226.70	26228.56	± 0.23	kJ/mol	14.003997 ± 0.000070	20508-99-0*0
Silyloxoniumylidene		1096.3	1089.9	± 2.9	kJ/mol	47.10817 ± 0.00047	152720-17-7*1
Hydroxysilylium		600.3	591.6	± 2.9	kJ/mol	47.10817 ± 0.00047	66639-72-3*0
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		406.5	390.9	± 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
Isocyanogen cation		1654.2	1656.5	± 1.4	kJ/mol	52.0343 ± 0.0016	133415-63-1*0
3,4-Hexadien-1-yne		418.6	407.5	± 2.6	kJ/mol	78.1118 ± 0.0048	194024-51-6*0
3-Ethynylcyclobutene		421.7	407.4	± 2.4	kJ/mol	78.1118 ± 0.0048	175090-90-1*0
Ammonium oxide		-428.47	-430.46	± 0.61	kJ/mol	52.07640 ± 0.00065	12161-77-2*500
2-Ethynyl-2-cyclopropen-1-ylidene		726.2	727.4	± 3.2	kJ/mol	62.0694 ± 0.0040	117992-84-4*0
Diisocyanogen cation		1838.6	1842.6	± 3.1	kJ/mol	52.0343 ± 0.0016	78800-21-22
2-Aminoethylium		1042.6	1026.1	± 2.4	kJ/mol	44.0752 ± 0.0017	54088-54-9*1
2-Aminoethyl anion		149.0	131.9	± 2.1	kJ/mol	44.0763 ± 0.0017	71857-14-2*0
Ammonia			-80.52	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*822
1,2-Diphenylethane		180.72	142.24	± 0.76	kJ/mol	182.2610 ± 0.0112	103-29-7*0
2-Naphthalenylium		1195.6	1177.8	± 3.5	kJ/mol	127.1620 ± 0.0080	79319-69-0*0
Dioxaziridine		277.5	270.7	± 1.9	kJ/mol	47.01348 ± 0.00061	67394-35-8*0
1-Naphthalenylium		1192.7	1174.7	± 3.4	kJ/mol	127.1620 ± 0.0080	79319-68-9*0
Biphenyl			113.7	± 1.1	kJ/mol	154.2078 ± 0.0096	92-52-4*590
Benzophenone		-16.7	-41.9	± 1.5	kJ/mol	182.2179 ± 0.0104	119-61-9*510
Buckminsterfullerene		2524.1	2519.5	± 6.4	kJ/mol	720.6420 ± 0.0480	99685-96-8*0
Buckminsterfullerene		2329.0	2338.4	± 6.4	kJ/mol	720.6420 ± 0.0480	99685-96-8*500
Peroxyformate		-320.7	-326.5	± 1.7	kJ/mol	61.0174 ± 0.0012	104960-05-6*2
Cyclobutatrienyl		962.0	965.5	± 2.4	kJ/mol	49.0507 ± 0.0032	99417-52-40
Nitrosyl nitrite anion		-100.2	-103.4	± 2.9	kJ/mol	76.01223 ± 0.00091	122413-35-82
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
Peroxyformyl		-90.4	-95.9	± 1.7	kJ/mol	61.0168 ± 0.0012	56240-83-6*2
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
Neon dication		6032.988	6033.214	± 0.0041	kJ/mol	20.17860 ± 0.00060	14041-55-5*0
Neon trication		12152.403	12152.403	± 0.032	kJ/mol	20.17805 ± 0.00060	14158-25-9*0
Neon tetracation		21529.82	21531.45	± 0.25	kJ/mol	20.17751 ± 0.00060	14041-56-6*0
Neon pentacation		33711.1	33711.1	± 1.2	kJ/mol	20.17696 ± 0.00060	14175-48-5*0
Neon hexacation		48949.3	48949.3	± 1.3	kJ/mol	20.17641 ± 0.00060	14041-57-7*0
Neon heptacation		68948.7	68948.7	± 1.4	kJ/mol	20.17586 ± 0.00060	14175-50-9*0
Neon octacation		92018.2	92018.2	± 1.4	kJ/mol	20.17531 ± 0.00060	14782-26-4*0
Neon nonacation		207396.1	207396.1	± 1.4	kJ/mol	20.17476 ± 0.00060	15721-59-2*0
Fluorine atom trication		11182.872	11186.697	± 0.032	kJ/mol	18.99675746 ± 0.00000050	14700-88-0*0
Sulfur atom dication		3528.18	3531.88	± 0.14	kJ/mol	32.0649 ± 0.0060	14127-58-3*0
Sulfur atom trication		6890.8	6892.8	± 3.2	kJ/mol	32.0644 ± 0.0060	22541-72-6*0
Sulfur atom tetracation		11447.1	11448.8	± 3.4	kJ/mol	32.0638 ± 0.0060	20681-10-1*0
Sulfur atom pentacation		18451.4	18453.2	± 3.4	kJ/mol	32.0633 ± 0.0060	14127-59-4*0
Dioxathiirane		166.2	163.7	± 2.2	kJ/mol	64.0648 ± 0.0060	191663-73-7*0
Ethynylaminylium		1350.6	1348.8	± 2.5	kJ/mol	40.0435 ± 0.0016	103835-08-1*2
Sulfur trioxide			-454.35	± 0.37	kJ/mol	80.0642 ± 0.0061	7446-11-9*500
3-Oxidedioxathiirane		-127.9	-132.9	± 2.2	kJ/mol	80.0642 ± 0.0061	2243010-16-2*0
Trioxathietane		263.6	258.5	± 2.3	kJ/mol	80.0642 ± 0.0061	2243010-16-20
Oxadithiirane		136.4	134.3	± 2.5	kJ/mol	80.1314 ± 0.0120	488092-02-0*0
Sulfanylideneoxidaniumthiolate		220.7	219.0	± 2.0	kJ/mol	80.1314 ± 0.0120	401811-43-6*0
Cyclopentadiene			110.37	± 0.57	kJ/mol	66.1011 ± 0.0040	542-92-7*590
Nitrogen atom hexacation		79493.10	79494.96	± 0.23	kJ/mol	14.003449 ± 0.000070	15721-56-9*0
Chlorine atom trication		7487.2	7490.2	± 3.3	kJ/mol	35.45105 ± 0.00090	16547-50-5*0
mu-Oxodichlorate anion		-147.8	-147.7	± 2.5	kJ/mol	86.9053 ± 0.0018	365546-30-1*0
Sulfuric acid		-878.92	-909.16	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*800
Fluorine atom tetracation		19594.3	19596.6	± 1.7	kJ/mol	18.99620888 ± 0.00000050	14700-79-9*0
Sulfuric acid			-886.35	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*821
Bromodioxy		116.7	107.7	± 3.8	kJ/mol	111.9028 ± 0.0012	67177-47-3*0
Sulfuric acid			-891.25	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*835
Sulfuric acid			-891.62	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*837
Sulfuric acid			-893.41	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*840
Sulfuric acid			-894.36	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*841
Sulfuric acid			-895.83	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*842
Sulfuric acid			-897.86	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*844
1-Methylethenylium		995.2	986.0	± 1.9	kJ/mol	41.0713 ± 0.0024	50457-57-3*0
Oxygen atom heptacation		113369.48	113371.34	± 0.12	kJ/mol	15.99556 ± 0.00030	14274-89-6*0
Sulfuric acid			-886.90	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*823
Sulfuric acid			-887.26	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*826
Sulfuric acid			-887.40	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*827
Sulfuric acid			-891.43	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*836
Sulfuric acid			-892.87	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*954
Sulfuric acid			-898.58	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*845
Sulfuric acid			-899.50	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*847
Sulfuric acid			-899.76	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*848
Sulfuric acid			-900.23	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*849
Sulfuric acid monohydrate		-1126.33	-1127.48	± 0.13	kJ/mol	116.0948 ± 0.0062	10193-30-3*500
Sulfuric acid dihydrate		-1422.14	-1426.93	± 0.14	kJ/mol	134.1100 ± 0.0063	13451-10-0*500
Sulfuric acid trihydrate		-1716.09	-1720.21	± 0.15	kJ/mol	152.1253 ± 0.0064	40835-65-2*500
Sulfuric acid tetrahydrate		-2006.94	-2010.98	± 0.17	kJ/mol	170.1406 ± 0.0065	37006-20-5*500
Sulfuric acid pentahydrate			-2300.38	± 0.18	kJ/mol	188.1559 ± 0.0066	137168-49-1*500
Sulfuric acid hexahydrate			-2588.92	± 0.20	kJ/mol	206.1712 ± 0.0068	137168-50-4*500
Sulfuric acid heptahydrate			-2876.88	± 0.22	kJ/mol	224.1864 ± 0.0069	137168-51-5*500
Sulfuric acid octahydrate			-3164.38	± 0.24	kJ/mol	242.2017 ± 0.0071	88434-16-6*500
Sulfuric acid nonahydrate			-3451.54	± 0.26	kJ/mol	260.2170 ± 0.0073	137168-52-6*500
Sulfuric acid decahydrate			-3738.44	± 0.27	kJ/mol	278.2323 ± 0.0075	137168-53-7*500
Sulfuric acid dodecahydrate			-4311.65	± 0.31	kJ/mol	314.2628 ± 0.0079	30383-99-4*500
Sulfuric acid pentadecahydrate			-5170.55	± 0.38	kJ/mol	368.3087 ± 0.0086	425605-43-2*500
Cyanoamidogen		657.4	654.6	± 2.0	kJ/mol	41.03212 ± 0.00082	12347-01-2*22
Ammonia			-80.56	± 0.41	kJ/mol	17.03056 ± 0.00022	7664-41-7*828
Cyclopropane cation		1021.8	1006.3	± 1.5	kJ/mol	42.0792 ± 0.0024	34496-93-0*0
Hydrazoic acid anion		316.3	310.1	± 2.3	kJ/mol	43.02871 ± 0.00022	203264-98-6*2
Thioformaldehyde cation		1025.9	1022.3	± 2.0	kJ/mol	46.0920 ± 0.0061	61356-81-8*0
2-Methylpentane		-180.20	-203.85	± 0.73	kJ/mol	86.1754 ± 0.0049	107-83-5*500
Chlorine atom tetracation		12615.5	12617.1	± 4.6	kJ/mol	35.45051 ± 0.00090	22541-74-8*0
Ammonia			-77.033	± 0.056	kJ/mol	17.03056 ± 0.00022	7664-41-7*800
Dimethylsulfoxide			-203.58	± 0.49	kJ/mol	78.1344 ± 0.0062	67-68-5*590
1-Methylethenyl anion		199.4	188.2	± 2.0	kJ/mol	41.0723 ± 0.0024	65887-19-6*0
3-Methylpentane		-177.65	-201.92	± 0.76	kJ/mol	86.1754 ± 0.0049	96-14-0*500
Dihydrogen anion		253.8	254.7	± 1.2	kJ/mol	2.01643 ± 0.00014	12184-89-3*0
Ammonia			-75.73	± 0.57	kJ/mol	17.03056 ± 0.00022	7664-41-7*801
Hydrogen fluoride			-321.39	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*1000
Hydrogen fluoride			-325.00	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*847
Hydrazoic acid			261.58	± 0.65	kJ/mol	43.02816 ± 0.00022	7782-79-8*500
Oxiranylium		901.3	893.3	± 1.4	kJ/mol	43.0441 ± 0.0016	57789-76-1*0
Hydrogen iodide			-51.303	± 0.099	kJ/mol	127.912410 ± 0.000076	10034-85-2*812
Hydrogen iodide			-56.580	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*898
Hydrogen iodide			-56.391	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*834
Methoxyoxomethyl		-152.7	-160.4	± 1.2	kJ/mol	59.0440 ± 0.0017	16481-04-2*0
Oxiranyl anion		121.3	113.4	± 1.5	kJ/mol	43.0452 ± 0.0016	72722-59-9*0
Hydrogen bromide			-118.90	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*821
Hydrogen chloride			-165.186	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*822
3-Diaziridinylidene		521.8	515.0	± 1.5	kJ/mol	42.04006 ± 0.00082	85513-79-7*0
Hydrogen chloride			-166.822	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*846
Oxiranylidene		213.5	209.3	± 1.4	kJ/mol	42.0367 ± 0.0016	50983-85-2*0
3-Diaziridinylidene		537.0	530.3	± 2.0	kJ/mol	42.04006 ± 0.00082	85513-79-7*2
Methoxyoxomethyl		-151.9	-159.9	± 2.1	kJ/mol	59.0440 ± 0.0017	16481-04-2*3
Chlorine atom		130.176	131.783	± 0.0011	kJ/mol	35.45270 ± 0.00090	22537-15-1*2
Propynylidene		597.9	599.6	± 1.2	kJ/mol	38.0480 ± 0.0024	67152-18-5*2
Isocyanomethane			146.5	± 2.2	kJ/mol	41.0520 ± 0.0016	593-75-9*500
Difluorodioxidane anion		-251.	-251.	± 28.	kJ/mol	69.99615 ± 0.00060	7783-45-10
Acetyloxoniumylidene		892.3	883.9	± 2.9	kJ/mol	59.0435 ± 0.0017	67057-47-0*1
Trioxygen difluoride		113.6	107.8	± 2.0	kJ/mol	85.99501 ± 0.00090	16829-28-0*2
3-Diaziridinylidene cation		1479.7	1473.7	± 2.4	kJ/mol	42.03951 ± 0.00082	85513-79-70
Chlorine chlorite		168.6	166.4	± 1.3	kJ/mol	102.9042 ± 0.0019	105206-44-8*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
Ammonium hydroxide			-366.34	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*842
3-Diaziridinylidene cation		1497.3	1491.8	± 3.1	kJ/mol	42.03951 ± 0.00082	85513-79-72
Diazomethyl		653.0	650.0	± 2.3	kJ/mol	41.03212 ± 0.00082	20813-32-5*21
Cyclopentadienide		100.9	87.9	± 1.1	kJ/mol	65.0937 ± 0.0040	12127-83-2*0
Acetic acid			-484.67	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*892
Acetic acid			-484.74	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*830
Dioxymethylene		341.8	339.8	± 3.0	kJ/mol	45.0174 ± 0.0010	438586-67-5*0
Hydrogen chloride			-166.922	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*855
trans-Cycloheptene		141.9	103.9	± 1.9	kJ/mol	96.1702 ± 0.0057	45509-99-7*0
Propargylenide		434.5	437.7	± 1.1	kJ/mol	38.0485 ± 0.0024	82906-05-6*0
Acetic acid			-484.76	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*831
Acetate			-485.10	± 0.27	kJ/mol	59.0446 ± 0.0017	71-50-1*800
Hydrogen iodide			-52.22	± 0.12	kJ/mol	127.912410 ± 0.000076	10034-85-2*813
Propane		-110.15	-121.14	± 0.66	kJ/mol	44.0956 ± 0.0025	74-98-6*500
Nitric acid			-206.48	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*855
(Iminomethyl)imidogen		420.1	413.3	± 2.9	kJ/mol	42.04006 ± 0.00082	87570-07-8*0
(Iminomethyl)imidogen		430.4	423.5	± 3.3	kJ/mol	42.04006 ± 0.00082	87570-07-8*12
Hydrogen chloride			-165.293	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*891
Diazene		207.12	199.98	± 0.41	kJ/mol	30.02936 ± 0.00020	3618-05-1*0
2-Propenylidene		417.5	410.6	± 1.5	kJ/mol	40.0639 ± 0.0024	19527-08-3*1
Oxoethylidene		261.1	258.3	± 1.1	kJ/mol	42.0367 ± 0.0016	39920-84-8*0
2-Oxo-1-ethylium-1-yl		1289.4	1286.8	± 2.5	kJ/mol	42.0361 ± 0.0016	214464-96-7*1
(Formyloxy)methyl		-151.4	-159.5	± 1.1	kJ/mol	59.0440 ± 0.0017	3122-12-1*0
Carboxymethyl		-226.6	-236.5	± 1.1	kJ/mol	59.0440 ± 0.0017	2887-46-9*0
Oxonium			-285.802	± 0.022	kJ/mol	19.02267 ± 0.00037	13968-08-6*800
Diazene		207.12	199.98	± 0.41	kJ/mol	30.02936 ± 0.00020	3618-05-1*1
Indane cation		909.5	879.6	± 1.7	kJ/mol	118.1752 ± 0.0072	78854-02-1*0
Oxoethylidene anion		86.9	84.2	± 2.1	kJ/mol	42.0372 ± 0.0016	106543-38-8*0
Hydrogen bromide			-119.10	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*822
Indene cation		970.05	946.81	± 0.76	kJ/mol	116.1593 ± 0.0072	42949-13-3*0
1,2,4-Trioxolane		-209.6	-227.8	± 3.1	kJ/mol	76.0514 ± 0.0019	289-14-5*0
Phenol cation		746.45	727.65	± 0.63	kJ/mol	94.1107 ± 0.0048	40932-22-7*0
Phenol anion		23.1	8.1	± 4.9	kJ/mol	94.1118 ± 0.0048	38752-11-3*0
2-Methoxy-2-oxoethyl		-202.9	-218.2	± 1.5	kJ/mol	73.0706 ± 0.0025	54668-31-4*0
Hydrogen fluoride			-322.44	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*834
Acetic acid			-484.78	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*832
Acetic acid			-484.79	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*833
Carbon trianion		1813.2	1818.6	± 5.9	kJ/mol	12.01235 ± 0.00080	50802-48-7*0
Hydroperoxonium		738.2	727.9	± 1.2	kJ/mol	35.02207 ± 0.00064	70850-26-9*0
Benzaldehyde cation		897.0	880.3	± 1.7	kJ/mol	106.1214 ± 0.0056	80226-59-1*0
Benzaldehyde anion		-55.0	-72.7	± 2.7	kJ/mol	106.1225 ± 0.0056	34473-57-9*0
(Acetyloxy)methyl		-200.2	-213.9	± 1.5	kJ/mol	73.0706 ± 0.0025	2887-49-2*0
Hydrogen fluoride			-321.83	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*887
Methylaminyliumyl		1423.0	1416.0	± 2.2	kJ/mol	29.04071 ± 0.00083	56924-51-7*2
Benzoyl anion		70.2	57.6	± 4.0	kJ/mol	105.1145 ± 0.0056	78944-74-8*0
Hydrogen bromide			-120.36	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*850
1,3-Butadiyne-1,4-diyl		1084.02	1093.83	± 0.83	kJ/mol	48.0428 ± 0.0032	78015-07-3*2
Ammonium hydroxide			-366.32	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*843
Trichlorine cation		1056.6	1055.5	± 1.4	kJ/mol	106.3576 ± 0.0027	33088-85-6*0
Propylidene		349.7	336.0	± 2.0	kJ/mol	42.0797 ± 0.0024	6700-78-3*12
Cyanomethylium		1256.25	1253.61	± 0.61	kJ/mol	40.0435 ± 0.0016	34430-18-7*0
Nitric acid			-201.95	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*809
Hydrogen bromide			-119.18	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*891
Acetic acid			-484.79	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*895
Acetic acid			-483.44	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*813
1-Hydroxyethylidene		57.43	47.12	± 0.77	kJ/mol	44.0526 ± 0.0017	30967-49-8*2
m-Tolualdehyde			-125.0	± 1.2	kJ/mol	120.1485 ± 0.0064	620-23-5*500
Hydrogen iodide			-52.89	± 0.16	kJ/mol	127.912410 ± 0.000076	10034-85-2*814
Hydrogen fluoride			-333.06	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*866
2-Methyl-2-propanol		-341.1	-365.5	± 1.9	kJ/mol	74.1216 ± 0.0033	75-65-0*500
Hydrogen bromide			-119.36	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*825
Acetic acid			-484.80	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*834
Propylidene		355.7	340.8	± 2.0	kJ/mol	42.0797 ± 0.0024	6700-78-3*2
Hydrogen fluoride			-325.44	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*850
Hydrogen chloride			-166.763	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*843
Hydrogen chloride			-164.500	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*820
1,3-Propanediyl		319.3	307.9	± 1.3	kJ/mol	42.0797 ± 0.0024	32458-33-6*1
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*834
Hexafluorobenzene cation		13.68	9.89	± 0.87	kJ/mol	186.0541 ± 0.0048	34528-23-9*0
Trioxidaniumyl		925.6	916.7	± 1.5	kJ/mol	50.01353 ± 0.00091	161321-37-5*0
Hydrogen iodide			-53.38	± 0.17	kJ/mol	127.912410 ± 0.000076	10034-85-2*815
Hydrogen chloride			-162.010	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*816
Methane anion		27.3	19.4	± 5.1	kJ/mol	16.04301 ± 0.00085	27680-53-1*0
2-Propenylidene		417.5	410.6	± 1.5	kJ/mol	40.0639 ± 0.0024	19527-08-3*0
Trioxodinitrate anion		-104.2	-107.5	± 1.9	kJ/mol	76.01223 ± 0.00091	194856-62-7*0
Hydrogen fluoride			-321.99	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*825
Hydrogen chloride			-166.680	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*841
Isocyanic acid anion		-54.2	-57.4	± 3.0	kJ/mol	43.02533 ± 0.00086	444010-28-00
Acetic acid			-483.52	± 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
Hydrogen bromide			-102.21	± 0.13	kJ/mol	80.9119 ± 0.0010	10035-10-6*805
Hydrogen fluoride			-321.79	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*817
Formaldehyde		-105.254	-109.220	± 0.095	kJ/mol	30.02598 ± 0.00087	50-00-0*22
Dioxoethylium		688.6	689.9	± 2.9	kJ/mol	57.0276 ± 0.0017	1994332-01-20
Hydrogen bromide			-120.40	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*852
Hydrogen iodide			-54.02	± 0.17	kJ/mol	127.912410 ± 0.000076	10034-85-2*816
Ethanedial anion		-188.7	-190.3	± 3.1	kJ/mol	57.0287 ± 0.0017	1994332-01-2*0
O--HH Complex		247.2	248.2	± 2.0	kJ/mol	18.01528 ± 0.00033	7732-18-5102
Hydroxyoxoethenylium		866.5	865.2	± 3.5	kJ/mol	57.0276 ± 0.0017	1994332-00-10
2-Propenylidene		419.1	411.6	± 2.3	kJ/mol	40.0639 ± 0.0024	19527-08-3*12
Hydrogen fluoride			-326.67	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*852
Ethynediolide		-132.9	-134.0	± 3.5	kJ/mol	57.0287 ± 0.0017	1994332-00-1*0
Dihydroxymethyl		-197.0	-205.3	± 1.2	kJ/mol	47.0333 ± 0.0010	14840-85-8*0
Pyridiniumyl		1051.32	1035.37	± 0.61	kJ/mol	79.0994 ± 0.0040	16399-94-3*0
Pyridine anion		214.4	200.9	± 3.2	kJ/mol	79.1005 ± 0.0040	12169-63-0*0
Acetic acid			-484.80	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*835
Isocyanogen chloride cation		1481.0	1482.2	± 3.9	kJ/mol	61.4696 ± 0.0012	956475-91-5*0
Dihydroxymethyl		-190.6	-199.3	± 2.3	kJ/mol	47.0333 ± 0.0010	14840-85-8*2
Dihydroxymethyl		-187.9	-196.7	± 2.1	kJ/mol	47.0333 ± 0.0010	14840-85-8*3
Acetone enol		-151.24	-168.05	± 0.75	kJ/mol	58.0791 ± 0.0025	29456-04-0*0
Acetone enol		-145.2	-162.5	± 1.9	kJ/mol	58.0791 ± 0.0025	29456-04-0*2
Hydrogen bromide			-119.51	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*828
Dichloromethylene		229.87	231.06	± 0.64	kJ/mol	82.9161 ± 0.0020	1605-72-7*0
Tetroxidane		-33.30	-43.23	± 0.44	kJ/mol	66.0135 ± 0.0012	29683-94-1*0
Hydrogen iodide			-54.588	± 0.092	kJ/mol	127.912410 ± 0.000076	10034-85-2*817
Hydrogen fluoride			-321.87	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*819
Ammonium hydroxide			-364.34	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*802
Hydrogen iodide			-56.379	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*895
Dihydroxymethylium		421.5	410.4	± 3.1	kJ/mol	47.0328 ± 0.0010	180071-68-5*0
Cyanic acid cation		1135.8	1133.2	± 2.9	kJ/mol	43.02423 ± 0.00086	59780-31-3*0
Hydrogen chloride			-162.855	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*817
Hydrogen fluoride			-322.14	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*909
Hydrazoic acid anion		309.1	303.2	± 2.3	kJ/mol	43.02871 ± 0.00022	203264-98-6*0
Methyl nitrite		-52.30	-64.26	± 0.89	kJ/mol	61.0401 ± 0.0010	624-91-9*1
Methyl nitrite			-88.65	± 0.55	kJ/mol	61.0401 ± 0.0010	624-91-9*500
Dihydroxymethylium		428.5	417.3	± 3.5	kJ/mol	47.0328 ± 0.0010	180071-68-5*3
Ethyl nitrite		-80.1	-98.3	± 1.9	kJ/mol	75.0666 ± 0.0017	109-95-5*2
Ethyl nitrite		-78.0	-96.9	± 1.9	kJ/mol	75.0666 ± 0.0017	109-95-5*3
Hydrogen bromide			-119.55	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*892
Propyl nitrite		-95.7	-119.6	± 1.8	kJ/mol	89.0932 ± 0.0025	543-67-9*0
Propyl nitrite		-95.4	-120.1	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*2
Propyl nitrite		-95.6	-120.1	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*3
Propyl nitrite		-94.8	-119.4	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*4
Propyl nitrite		-94.7	-119.0	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*5
Propyl nitrite		-92.8	-117.8	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*6
Propyl nitrite		-92.6	-117.7	± 2.5	kJ/mol	89.0932 ± 0.0025	543-67-9*7
Propyl nitrite		-91.1	-116.1	± 2.8	kJ/mol	89.0932 ± 0.0025	543-67-9*8
1,2-Dibromoethene		121.3	101.2	± 2.0	kJ/mol	185.8453 ± 0.0026	540-49-8*0
Acetic acid			-484.80	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*837
Dihydroxymethylium		439.4	428.2	± 3.5	kJ/mol	47.0328 ± 0.0010	180071-68-5*2
Dihydroxymethanide		-194.2	-202.4	± 1.8	kJ/mol	47.0339 ± 0.0010	61192-32-3*0
1-Hydroxyethylidene		57.43	47.12	± 0.77	kJ/mol	44.0526 ± 0.0017	30967-49-8*0
2,2,4-Trimethylpentane		-171.1	-223.5	± 1.5	kJ/mol	114.2285 ± 0.0065	540-84-1*0
Hydrogen iodide			-55.09	± 0.12	kJ/mol	127.912410 ± 0.000076	10034-85-2*818
(Methylamino)methyl anion		202.1	185.2	± 3.1	kJ/mol	44.0763 ± 0.0017	31277-25-50
Cyanic acid anion		-9.2	-9.5	± 3.1	kJ/mol	43.02533 ± 0.00086	58199-47-6*0
Dihydroxymethanide		-192.0	-201.3	± 2.5	kJ/mol	47.0339 ± 0.0010	61192-32-3*1
Propylidyne		492.7	483.0	± 1.2	kJ/mol	41.0718 ± 0.0024	85056-54-8*0
Hydrogen peroxide cation		897.28	890.30	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*0
Fluorosyl fluoride anion		-147.1	-146.8	± 3.0	kJ/mol	53.99675 ± 0.00030	86825-57-20
Acetic acid			-484.81	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*838
Dihydroxymethanide		-177.6	-187.5	± 2.5	kJ/mol	47.0339 ± 0.0010	61192-32-3*3
Ethanimine		55.78	41.14	± 0.72	kJ/mol	43.0678 ± 0.0016	20729-41-3*0
Acetic acid			-484.81	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*839
Isocyanogen chloride anion		103.0	107.4	± 3.9	kJ/mol	61.4707 ± 0.0012	923019-39-0*0
Hydrogen iodide			-56.450	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*838
1,1-Dibromoethane			-67.0	± 1.3	kJ/mol	187.8612 ± 0.0026	557-91-5*500
Hydrogen fluoride			-321.92	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*890
Diazene cation		1132.49	1125.83	± 0.64	kJ/mol	30.02881 ± 0.00020	76986-17-9*0
Ammonium hydroxide			-364.92	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*804
Ethylideneammoniumylidene		1310.0	1300.4	± 3.0	kJ/mol	42.0594 ± 0.0016	91127-36-5*1
3-Buten-2-one		-95.35	-110.88	± 0.85	kJ/mol	70.0898 ± 0.0032	78-94-4*0
Isocyanoamidogen		489.7	487.7	± 1.2	kJ/mol	41.03212 ± 0.00082	947408-73-3*0
3-Buten-2-one		-93.7	-109.8	± 1.6	kJ/mol	70.0898 ± 0.0032	78-94-4*2
Carbon		2.390	1.862	± 0.043	kJ/mol	12.01070 ± 0.00080	7440-44-0*501
1,3-Butadien-2-ol		-48.0	-64.3	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*12
Cyanogen bromide cation		1331.3	1325.0	± 1.4	kJ/mol	105.9209 ± 0.0013	34749-77-4*0
1,3-Butadien-2-ol		-37.8	-54.2	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*22
Isocyanoamidogen		828.2	825.6	± 1.3	kJ/mol	41.03212 ± 0.00082	947408-73-3*2
1,3-Butadien-2-ol		-42.6	-58.7	± 2.3	kJ/mol	70.0898 ± 0.0032	59120-04-6*2
1,3-Butadien-2-ol		-53.4	-68.3	± 1.5	kJ/mol	70.0898 ± 0.0032	59120-04-6*0
Nitric acid			-206.02	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*820
Acetic acid			-484.82	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*841
Hydrogen fluoride			-322.17	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*831
Isocyanoamidogen		837.9	835.2	± 2.1	kJ/mol	41.03212 ± 0.00082	947408-73-3*21
Ethylideneazanide		147.8	137.6	± 3.2	kJ/mol	42.0604 ± 0.0016	144810-43-5*0
Ammonium hydroxide			-366.36	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*841
Acetic acid			-484.70	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*844
2-Methyliumylidynehydrazin-2-ium-1-ide		1544.1	1542.5	± 1.7	kJ/mol	41.03157 ± 0.00082	947408-73-30
Acrolein cation		919.99	910.03	± 0.79	kJ/mol	56.0627 ± 0.0024	84005-05-0*0
Acrolein cation		930.8	921.0	± 1.9	kJ/mol	56.0627 ± 0.0024	84005-05-0*2
Acrolein anion		-71.8	-81.3	± 3.1	kJ/mol	56.0638 ± 0.0024	23555-87-5*0
Acrolein anion		-68.0	-78.0	± 3.5	kJ/mol	56.0638 ± 0.0024	23555-87-5*1
Methoxymethylene		129.24	118.73	± 0.78	kJ/mol	44.0526 ± 0.0017	19527-10-7*2
Peroxychlorous acid		95.4	89.8	± 2.0	kJ/mol	84.4588 ± 0.0013	177778-92-6*0
Hydrogen bromide			-120.24	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*957
Hydroxymethoxy		-149.9	-159.7	± 1.9	kJ/mol	47.0333 ± 0.0010	72144-78-6*1
Propyn-1-ol cation		959.9	951.7	± 3.0	kJ/mol	56.0627 ± 0.0024	84005-04-9*0
Ammonium hydroxide			-366.29	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*846
2-Methyloxirene		344.1	334.8	± 1.8	kJ/mol	56.0633 ± 0.0024	2835-41-8*1
2-Methyloxirene		346.8	336.9	± 2.5	kJ/mol	56.0633 ± 0.0024	2835-41-8*12
Chloromethylene		320.37	320.65	± 0.89	kJ/mol	48.4713 ± 0.0012	2108-20-5*0
2-Methanidylidynehydrazin-2-ium-1-ide		281.9	279.1	± 1.4	kJ/mol	41.03267 ± 0.00082	947408-74-40
2-Iminoethyl		219.33	208.65	± 0.86	kJ/mol	42.0599 ± 0.0016	73843-90-0*0
Methoxymethylene		129.24	118.73	± 0.78	kJ/mol	44.0526 ± 0.0017	19527-10-7*0
2-Methanidylidynehydrazin-2-ium-1-ide		518.6	516.2	± 1.6	kJ/mol	41.03267 ± 0.00082	947408-74-41
Acryloyl		101.1	96.3	± 1.4	kJ/mol	55.0553 ± 0.0024	72241-20-4*0
Acryloyl		101.1	95.9	± 1.4	kJ/mol	55.0553 ± 0.0024	72241-20-4*1
Acryloyl		109.5	103.8	± 5.7	kJ/mol	55.0553 ± 0.0024	72241-20-4*12
1-Oxo-2-propenylium		772.8	765.9	± 3.0	kJ/mol	55.0548 ± 0.0024	35335-83-2*0
1-Oxo-2-propenylium		1036.1	1030.7	± 3.9	kJ/mol	55.0548 ± 0.0024	35335-83-2*1
1-Oxo-2-propenide		50.7	46.0	± 2.6	kJ/mol	55.0559 ± 0.0024	78944-75-9*0
Hydrogen bromide			-119.67	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*829
Hydroxymethoxy cation		925.0	915.3	± 3.2	kJ/mol	47.0328 ± 0.0010	180071-69-6*1
Ketene		-45.21	-48.39	± 0.11	kJ/mol	42.0367 ± 0.0016	463-51-4*22
1-Formylethenylium		1023.5	1018.0	± 2.3	kJ/mol	55.0548 ± 0.0024	101705-89-9*0
Hydrogen bromide			-110.68	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*809
Hydroxymethoxy cation		930.9	921.4	± 3.7	kJ/mol	47.0328 ± 0.0010	180071-69-6*12
Hydroxymethoxy cation		933.5	923.8	± 3.7	kJ/mol	47.0328 ± 0.0010	180071-69-6*11
Ethane anion		41.9	26.6	± 4.4	kJ/mol	30.0696 ± 0.0017	54064-82-3*0
3-Oxo-1-propenyl		190.96	185.41	± 0.91	kJ/mol	55.0553 ± 0.0024	206255-29-0*0
Acetic acid			-484.84	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*850
3-Oxo-1-propenyl		191.7	185.9	± 2.1	kJ/mol	55.0553 ± 0.0024	206255-29-0*2
Chlorohydroxymethyl		-54.7	-60.4	± 1.1	kJ/mol	65.4787 ± 0.0012	147139-06-8*0
3-Oxo-1-propenyl		201.4	195.5	± 2.0	kJ/mol	55.0553 ± 0.0024	206255-29-0*22
3-Oxo-1-propenyl		206.1	200.2	± 2.0	kJ/mol	55.0553 ± 0.0024	206255-29-0*12
3-Oxo-1-propenylium		1005.1	1002.8	± 2.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*0
3-Oxo-1-propenylium		1185.6	1180.0	± 3.0	kJ/mol	55.0548 ± 0.0024	101705-90-2*1
Dioxodiazoxane		93.0	88.1	± 1.3	kJ/mol	76.01168 ± 0.00091	122413-35-8*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
2-Iminoethylium		1108.3	1097.6	± 2.9	kJ/mol	42.0594 ± 0.0016	73843-91-1*0
3-Oxo-1-propenylium		1195.7	1189.8	± 3.4	kJ/mol	55.0548 ± 0.0024	101705-90-2*112
3-Oxo-1-propenylium		1205.7	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	20.6	± 2.5	kJ/mol	55.0559 ± 0.0024	135924-69-5*1
2-Formylethen-1-ide		30.5	23.8	± 3.1	kJ/mol	55.0559 ± 0.0024	135924-69-5*2
Acetic acid			-484.85	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*852
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
Acetic acid			-484.86	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*855
1,2-Propadien-1-one anion		49.7	48.5	± 3.1	kJ/mol	54.0479 ± 0.0024	159171-62-7*0
Hydrogen iodide			-55.35	± 0.11	kJ/mol	127.912410 ± 0.000076	10034-85-2*819
Chloroethane		-134.34	-135.96	± 0.25	kJ/mol	64.5138 ± 0.0019	75-00-3*500
Acetic acid			-484.87	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*861
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
Hydroxyamidogen		101.28	94.45	± 0.87	kJ/mol	32.02202 ± 0.00034	13940-32-4*0
2-Methanidylidynehydrazin-2-ium-1-ide		531.6	530.3	± 2.3	kJ/mol	41.03267 ± 0.00082	947408-74-411
Hydrogen chloride			-164.926	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*821
Formylethynyl anion		100.5	101.8	± 3.4	kJ/mol	53.0400 ± 0.0024	85905-64-2*0
Hydroxyaminylium		1019.5	1012.3	± 2.5	kJ/mol	32.02147 ± 0.00034	66097-71-0*0
2-Cyclopropen-1-one cation		1078.7	1075.6	± 2.0	kJ/mol	54.0468 ± 0.0024	100815-68-7*0
2-Iminoethylium		1148.6	1140.2	± 3.3	kJ/mol	42.0594 ± 0.0016	73843-91-1*1
Hydrogen iodide			-56.521	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*840
Hydroxymethoxy anion		-373.80	-383.74	± 0.86	kJ/mol	47.0339 ± 0.0010	67899-36-9*0
Isofulminic acid cation		1377.0	1374.9	± 2.9	kJ/mol	43.02423 ± 0.00086	117800-60-9*0
Dioxohydrazine		192.3	188.7	± 1.8	kJ/mol	60.01228 ± 0.00062	16824-89-8*1
Isourea		-156.1	-172.7	± 2.6	kJ/mol	60.05534 ± 0.00091	4744-36-9*0
Isocyanogen bromide cation		1470.0	1464.3	± 5.9	kJ/mol	105.9209 ± 0.0013	238754-53-5*0
Hydroxymethoxy anion		-349.1	-358.7	± 1.9	kJ/mol	47.0339 ± 0.0010	67899-36-9*1
Carbamoyl anion		-81.9	-87.8	± 3.1	kJ/mol	44.03327 ± 0.00087	78944-69-1*0
Chlorine atom dianion		406.6	408.2	± 4.8	kJ/mol	35.45380 ± 0.00090	33944-49-9*0
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
2-Hydroxyethyl		-12.90	-26.16	± 0.48	kJ/mol	45.0605 ± 0.0017	4422-54-2*0
Hydrogen chloride			-165.819	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*892
(Hydroxyimino)methyl		250.1	244.3	± 1.8	kJ/mol	44.03272 ± 0.00087	206442-92-4*0
1,3-Propanediyl		337.7	323.0	± 2.2	kJ/mol	42.0797 ± 0.0024	32458-33-6*2
Hydrogen chloride			-163.675	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*818
(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		762.5	752.7	± 2.0	kJ/mol	35.02207 ± 0.00064	70850-26-9*2
2-Iminoethyl anion		104.5	94.1	± 2.1	kJ/mol	42.0604 ± 0.0016	73843-87-5*0
Ammonium hydroxide			-366.39	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*831
Formylimidogen		245.2	242.1	± 4.6	kJ/mol	43.02478 ± 0.00086	42288-92-6*1
Ammonium hydroxide			-365.30	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*806
Hydrogen fluoride			-321.96	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*891
Formaldoxime		30.5	19.9	± 1.3	kJ/mol	45.04066 ± 0.00088	75-17-2*0
Acetylide		843.0	849.6	± 3.2	kJ/mol	24.0225 ± 0.0016	34846-56-5*0
Diazomethylium		1395.8	1394.1	± 1.3	kJ/mol	41.03157 ± 0.00082	271249-81-1*0
Hydrogen fluoride			-322.58	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*837
Nitric acid			-193.74	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*803
Hydrogen chloride			-166.738	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*842
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*830
Propylidene		362.8	347.5	± 2.8	kJ/mol	42.0797 ± 0.0024	6700-78-3*22
1,1-Ethenediol		-307.59	-320.12	± 0.83	kJ/mol	60.0520 ± 0.0017	10375-04-9*0
Diazirinyl		491.08	487.69	± 0.96	kJ/mol	41.03212 ± 0.00082	69967-71-1*0
1-Iminoethyl		233.1	223.0	± 1.1	kJ/mol	42.0599 ± 0.0016	128365-64-0*0
Carbonate			-675.163	± 0.053	kJ/mol	60.0100 ± 0.0012	3812-32-6*800
1-Iminoethyl		252.3	242.3	± 2.0	kJ/mol	42.0599 ± 0.0016	128365-64-0*1
1-Iminoethylium		833.7	823.2	± 3.0	kJ/mol	42.0594 ± 0.0016	128365-64-00
Hydrogen iodide			-55.51	± 0.11	kJ/mol	127.912410 ± 0.000076	10034-85-2*820
1,1-Ethenediol		-302.4	-315.7	± 1.9	kJ/mol	60.0520 ± 0.0017	10375-04-9*2
1-Iminoethylium		1342.2	1333.3	± 3.9	kJ/mol	42.0594 ± 0.0016	128365-64-01
Pentachloroethylium		838.1	836.4	± 3.3	kJ/mol	201.2844 ± 0.0048	7094-17-90
Ethylperoxy		-6.23	-22.19	± 0.64	kJ/mol	61.0599 ± 0.0017	3170-61-4*0
1-Cyanoethylidene		437.6	433.8	± 1.5	kJ/mol	53.0627 ± 0.0024	498544-34-6*0
Hydrogen iodide			-55.697	± 0.096	kJ/mol	127.912410 ± 0.000076	10034-85-2*821
Nitric acid			-206.04	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*822
Pentachloroethanide		-281.8	-280.3	± 3.9	kJ/mol	201.2854 ± 0.0048	263019-83-6*0
Hydrogen iodide			-56.626	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*843
Cyclopropylidene		474.99	466.97	± 0.84	kJ/mol	40.0639 ± 0.0024	2143-70-6*0
Ethoxyoxoniumylidene		923.8	911.4	± 1.5	kJ/mol	61.0594 ± 0.0017	268728-77-4*0
Ethoxyoxoniumylidene		962.4	947.7	± 1.7	kJ/mol	61.0594 ± 0.0017	268728-77-4*2
3-Imino-2-propen-1-ylidene		530.7	526.3	± 1.2	kJ/mol	53.0627 ± 0.0024	916765-05-4*0
1,1-Ethenediol		-296.0	-309.3	± 1.9	kJ/mol	60.0520 ± 0.0017	10375-04-9*3
3-Imino-2-propen-1-ylidene		571.9	567.1	± 1.6	kJ/mol	53.0627 ± 0.0024	916765-05-4*2
Nitric oxide			79.227	± 0.079	kJ/mol	30.00614 ± 0.00031	10102-43-9*1000
Ethoxyoxoniumylidene		967.4	951.6	± 2.4	kJ/mol	61.0594 ± 0.0017	268728-77-4*23
1-Iminoethylium		1378.3	1368.8	± 4.3	kJ/mol	42.0594 ± 0.0016	128365-64-011
Ethaneperoxolate		-120.46	-136.53	± 0.72	kJ/mol	61.0604 ± 0.0017	268728-75-2*0
2-(Methylidyneamino)ethenyl		600.7	596.4	± 1.2	kJ/mol	53.0627 ± 0.0024	123416-74-0*0
Glycolaldehyde		-304.35	-317.38	± 0.89	kJ/mol	60.0520 ± 0.0017	141-46-8*0
2-(Methylidyneamino)ethenyl		634.5	630.5	± 1.6	kJ/mol	53.0627 ± 0.0024	123416-74-0*2
Ethaneperoxolate		-119.9	-135.6	± 1.9	kJ/mol	61.0604 ± 0.0017	268728-75-2*1
Diazirenide		504.8	501.3	± 2.9	kJ/mol	41.03267 ± 0.00082	130614-84-5*1
Hydrogen bromide			-120.28	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*843
1-Iminoethanide		185.7	175.6	± 3.2	kJ/mol	42.0604 ± 0.0016	128365-65-10
Methylaminyliumyl		1388.2	1381.9	± 2.2	kJ/mol	29.04071 ± 0.00083	56924-51-7*0
Hydroxymethylene cation		971.9	968.3	± 1.4	kJ/mol	30.02543 ± 0.00087	135395-06-1*0
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*835
Hydrogen iodide			-55.805	± 0.096	kJ/mol	127.912410 ± 0.000076	10034-85-2*822
Hydrogen bromide			-119.75	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*830
Hydroxymethylene anion		147.2	144.2	± 1.6	kJ/mol	30.02653 ± 0.00087	207914-87-2*0
Hydrogen fluoride			-321.94	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*906
Hydrogen chloride			-166.516	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*837
1-Iminoethanide		193.1	182.5	± 3.6	kJ/mol	42.0604 ± 0.0016	128365-65-11
2-Cyanovinyl		447.81	445.40	± 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		263.8	261.4	± 1.8	kJ/mol	52.0553 ± 0.0024	85398-67-00
Hydrogen chloride			-166.847	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*850
Diazene cation		1132.49	1125.55	± 0.64	kJ/mol	30.02881 ± 0.00020	76986-17-9*1
2-Isocyanovinyl		543.2	541.8	± 1.7	kJ/mol	52.0547 ± 0.0024	225798-14-1*0
Acetic acid			-483.60	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*815
Hydrogen fluoride			-322.71	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*839
Cyanomethyliumyl		1506.5	1508.0	± 2.3	kJ/mol	39.0355 ± 0.0016	34447-38-6*0
Cyanomethylene anion		286.3	286.9	± 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
1,2-Dichloroethene		3.81	-1.51	± 0.55	kJ/mol	96.9427 ± 0.0024	540-59-0*0
Carbon dianion		1027.5	1033.0	± 4.9	kJ/mol	12.01180 ± 0.00080	50802-47-6*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
Nitrosyl nitrite anion		-103.0	-106.1	± 2.8	kJ/mol	76.01223 ± 0.00091	122413-35-80
3-Oxo-1,2-propadien-1-ylium-1-yl		1380.4	1385.6	± 3.8	kJ/mol	52.0310 ± 0.0024	151455-13-9*0
3-Oxo-1,2-propadienylidene anion		224.4	230.2	± 3.5	kJ/mol	52.0320 ± 0.0024	109292-50-4*0
Hydrogen bromide			-115.90	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*815
Chlorine atom heptacation		39520.	39522.	± 11.	kJ/mol	35.44886 ± 0.00090	22537-27-5*0
Hydrogen bromide			-120.44	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*861
Difluorodioxidanium		1283.7	1280.1	± 2.3	kJ/mol	69.99506 ± 0.00060	7783-44-00
Hydrogen chloride			-166.708	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*896
Hydrogen chloride			-166.752	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*899
Ammonium hydroxide			-366.19	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*852
N-Methylenemethaniminium		904.3	893.4	± 3.1	kJ/mol	42.0594 ± 0.0016	88333-01-1*0
1-Hydroperoxyethylium		690.5	675.6	± 1.5	kJ/mol	61.0594 ± 0.0017	126898-98-40
N-Methylenemethaniminium		1157.2	1147.3	± 4.0	kJ/mol	42.0594 ± 0.0016	88333-01-1*1
Hydrogen chloride			-165.977	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*829
1,3-Cyclobutadiene cation		1215.7	1207.4	± 3.0	kJ/mol	52.0740 ± 0.0032	34531-09-4*0
Iminomethyl		275.81	272.21	± 0.56	kJ/mol	28.03332 ± 0.00082	15691-95-9*0
N-Methylidynemethanaminium		881.1	870.2	± 3.0	kJ/mol	42.0594 ± 0.0016	64709-60-0*0
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
Isocyanic fluoride cation		1618.2	1618.8	± 4.0	kJ/mol	45.01529 ± 0.00080	16992-26-00
Hydrogen bromide			-71.67	± 0.13	kJ/mol	80.9119 ± 0.0010	10035-10-6*801
Hydrogen chloride			-166.102	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*830
Nitric acid			-206.03	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*891
Hydrogen iodide			-56.467	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*839
1-Hydroperoxyethylium		841.4	830.1	± 1.7	kJ/mol	61.0594 ± 0.0017	126898-98-41
Vinylvinylidene		494.1	488.8	± 1.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*0
Vinylvinylidene		690.5	684.7	± 2.7	kJ/mol	52.0746 ± 0.0032	148759-16-4*1
(Methylimino)methyl		278.0	267.9	± 1.1	kJ/mol	42.0599 ± 0.0016	117928-23-1*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
(Methylimino)methyl		297.1	287.1	± 2.0	kJ/mol	42.0599 ± 0.0016	117928-23-1*2
Dichlorovinylidene		424.2	427.5	± 3.0	kJ/mol	94.9268 ± 0.0024	20394-25-6*0
1,2-Butadien-1-ylidene		511.8	506.3	± 2.0	kJ/mol	52.0746 ± 0.0032	119908-55-3*0
1,2-Butadien-1-ylidene		651.7	646.2	± 3.7	kJ/mol	52.0746 ± 0.0032	119908-55-3*1
1-Hydroperoxyethylium		691.8	676.1	± 2.3	kJ/mol	61.0594 ± 0.0017	126898-98-422
1-Hydroperoxyethylium		843.7	831.6	± 2.6	kJ/mol	61.0594 ± 0.0017	126898-98-412
Hydrogen bromide			-120.21	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*841
Chlorovinylidene		429.2	430.9	± 2.9	kJ/mol	60.4820 ± 0.0018	70277-82-6*0
Hydrogen fluoride			-324.44	± 0.14	kJ/mol	20.006343 ± 0.000070	7664-39-3*844
Diazomethyl		652.7	649.8	± 1.3	kJ/mol	41.03212 ± 0.00082	20813-32-5*2
Hydrogen bromide			-119.86	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*831
Imidogen		509.34	509.39	± 0.17	kJ/mol	15.014680 ± 0.000099	13774-92-0*2
Hydrogen fluoride			-322.51	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*835
1,2,3-Butatrien-1-ylium		1271.8	1270.0	± 1.1	kJ/mol	51.0661 ± 0.0032	81932-79-8*0
Hydrogen bromide			-119.92	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*832
2-Hydroxyethenyl		137.98	132.16	± 0.72	kJ/mol	43.0446 ± 0.0016	108665-16-3*0
Carbonylbis(oxy)		-144.7	-145.7	± 2.4	kJ/mol	60.0089 ± 0.0012	16518-45-9*0
(Methylimino)methanide		223.0	212.2	± 3.2	kJ/mol	42.0604 ± 0.0016	64709-60-00
(Methylimino)methanide		236.6	225.7	± 3.6	kJ/mol	42.0604 ± 0.0016	64709-60-02
Diiodine cation		963.523	960.408	± 0.018	kJ/mol	253.808391 ± 0.000060	28712-14-3*0
1-Buten-3-yn-1-yl		547.24	544.73	± 0.86	kJ/mol	51.0666 ± 0.0032	2810-61-9*0
1-Buten-3-ynylium		1482.3	1480.2	± 1.4	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			-119.97	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*833
Fluorine atom nonacation		262121.1	262122.9	± 1.8	kJ/mol	18.99346598 ± 0.00000050	35424-07-8*0
2-Hydroperoxyethyl		64.6	51.3	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-97-3*0
Hydrogen fluoride			-323.39	± 0.12	kJ/mol	20.006343 ± 0.000070	7664-39-3*841
Fluoromethane cation		981.84	974.35	± 0.62	kJ/mol	34.03237 ± 0.00083	59122-96-2*0
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	323.6	± 1.3	kJ/mol	51.0672 ± 0.0032	58870-47-6*0
Hydrogen iodide			-55.856	± 0.096	kJ/mol	127.912410 ± 0.000076	10034-85-2*891
Nitrosyl nitrate		48.3	40.4	± 1.8	kJ/mol	92.0111 ± 0.0012	15969-55-8*0
2-Hydroperoxyethyl		64.6	50.9	± 1.3	kJ/mol	61.0599 ± 0.0017	126898-97-3*3
Nitric acid			-206.04	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*828
3-Methylene-1-cyclopropen-1-ylium		1398.7	1395.4	± 1.7	kJ/mol	51.0661 ± 0.0032	117469-28-0*0
1-Aminoethenylium		900.0	889.2	± 3.0	kJ/mol	42.0594 ± 0.0016	139597-26-50
2-Hydroperoxyethyl		65.1	51.6	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*1
1-Aminoethenide		216.0	205.2	± 3.2	kJ/mol	42.0604 ± 0.0016	139597-26-5*0
2-Cyclopropen-1-ylidenemethylium		1346.4	1343.8	± 1.8	kJ/mol	51.0661 ± 0.0032	112936-36-4*0
Fluoromethane			-245.72	± 0.45	kJ/mol	34.03292 ± 0.00083	593-53-3*590
Hydrogen chloride			-166.947	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*861
Hydrogen chloride			-166.793	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*844
Diazene anion		265.5	258.7	± 2.0	kJ/mol	30.02991 ± 0.00020	100429-75-2*0
1,3-Cyclobutadien-1-ylium		1388.2	1383.3	± 1.8	kJ/mol	51.0661 ± 0.0032	81913-77-1*0
Chloromethane		-106.50	-102.54	± 0.19	kJ/mol	50.4872 ± 0.0012	74-87-3*590
2-Hydroperoxyethyl		65.5	51.5	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*31
Carbon		1114.967	1120.113	± 0.040	kJ/mol	12.01070 ± 0.00080	7440-44-0*3
Cyclobutenide		320.3	307.9	± 3.2	kJ/mol	53.0830 ± 0.0032	60211-42-9*0
2-Hydroperoxyethyl		65.6	52.0	± 2.2	kJ/mol	61.0599 ± 0.0017	126898-97-3*12
1,2-Butadiene		137.80	138.85	± 0.63	kJ/mol	54.0904 ± 0.0032	590-19-2*500
Bromomethane cation		996.60	981.68	± 0.21	kJ/mol	94.9380 ± 0.0013	12538-70-4*0
Cyanic fluoride cation		1294.2	1294.7	± 1.1	kJ/mol	45.01529 ± 0.00080	62532-69-8*0
Phenylperoxy cation		1018.8	1001.8	± 3.1	kJ/mol	109.1022 ± 0.0049	956036-17-2*0
Phenylperoxy anion		-39.0	-56.0	± 3.3	kJ/mol	109.1032 ± 0.0049	956036-17-20
Ethenyldioxy		118.7	109.8	± 1.3	kJ/mol	59.0440 ± 0.0017	88181-72-0*0
Nitrous acid anion		-105.82	-109.30	± 0.78	kJ/mol	47.01403 ± 0.00061	256393-36-9*0
Hydrogen isocyanide anion		191.62	191.81	± 0.32	kJ/mol	27.02593 ± 0.00081	96913-22-3*0
Hydrogen iodide			-56.600	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*842
Hydrogen chloride			-166.253	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*831
Fulvene cation		1043.6	1027.8	± 2.7	kJ/mol	78.1113 ± 0.0048	34504-75-1*0
Fulvene anion		191.4	176.3	± 4.0	kJ/mol	78.1124 ± 0.0048	34504-63-7*0
Isoformyl anion		55.8	58.4	± 1.8	kJ/mol	29.01859 ± 0.00086	81747-63-9*0
Ethenyldioxy		122.9	113.1	± 2.2	kJ/mol	59.0440 ± 0.0017	88181-72-0*2
Dinitrogen anion		192.5	192.5	± 1.7	kJ/mol	28.01403 ± 0.00014	12185-02-3*0
2-Aminoethenyl		319.8	310.2	± 1.3	kJ/mol	42.0599 ± 0.0016	176964-54-8*0
Fulvenone cation		913.5	903.3	± 1.9	kJ/mol	92.0948 ± 0.0048	884319-80-6*0
Trihydrogen		254.5	250.7	± 1.2	kJ/mol	3.02382 ± 0.00021	12184-91-7*200
Nitric acid			-206.16	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*833
Iodomethane cation		944.70	935.31	± 0.18	kJ/mol	141.93844 ± 0.00083	12538-72-6*0
Hydroxyformyl anion		-319.54	-321.40	± 0.56	kJ/mol	45.0180 ± 0.0010	78944-70-4*0
Silicon atom tetracation		10401.08	10404.06	± 0.56	kJ/mol	28.08331 ± 0.00030	22537-24-2*0
Silicon anion		316.25	319.23	± 0.56	kJ/mol	28.08605 ± 0.00030	14337-02-1*0
Nitrosodioxaziridine		413.9	408.1	± 3.2	kJ/mol	76.01168 ± 0.00091	132871-99-9*2
2-Aminoethenylium		1110.6	1099.8	± 2.4	kJ/mol	42.0594 ± 0.0016	64724-21-6*1
Disilicon anion		375.1	378.9	± 1.7	kJ/mol	56.17155 ± 0.00060	64236-73-3*0
Fluoroform			-704.69	± 0.41	kJ/mol	70.01385 ± 0.00080	75-46-7*590
2-Aminoethenyl anion		230.2	219.4	± 2.6	kJ/mol	42.0604 ± 0.0016	64724-21-60
Iminomethide		237.4	233.6	± 1.8	kJ/mol	28.03387 ± 0.00082	90623-30-6*0
Hydrobromate ion		-5.5	-12.0	± 4.3	kJ/mol	80.9125 ± 0.0010	85532-97-4*0
Hydrogen peroxide		-129.402	-135.408	± 0.058	kJ/mol	34.01468 ± 0.00062	7722-84-1*1
Dinitrogen tetraoxide		-37.83	-26.98	± 0.19	kJ/mol	92.0111 ± 0.0012	10544-72-6*500
Ethylimidogen anion		277.3	263.4	± 3.6	kJ/mol	43.0684 ± 0.0016	82539-33-1*0
Hydrogen iodide			-55.964	± 0.099	kJ/mol	127.912410 ± 0.000076	10034-85-2*825
Nitrilomethylimidogen		581.6	578.4	± 1.5	kJ/mol	41.03212 ± 0.00082	324529-58-0*0
mu-Oxodioxodinitrogen		984.0	981.1	± 3.2	kJ/mol	76.01113 ± 0.00091	87950-63-8*1
2-Butynylium		1085.8	1077.6	± 1.3	kJ/mol	53.0820 ± 0.0032	64235-83-2*0
O--HH Complex		247.6	248.9	± 2.7	kJ/mol	18.01528 ± 0.00033	7732-18-5101
Silicon carbide anion		509.8	514.4	± 4.4	kJ/mol	40.09675 ± 0.00085	86017-99-4*0
Nitric acid			-206.16	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*895
Ethylimidogen cation		1394.6	1381.4	± 3.6	kJ/mol	43.0673 ± 0.0016	82539-33-11
Silicon carbide		-70.6	-71.6	± 1.5	kJ/mol	40.09620 ± 0.00085	409-21-2*500
Diazanide		249.3	239.3	± 3.1	kJ/mol	31.03785 ± 0.00025	25415-88-7*0
Ammonium hydroxide			-365.54	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*808
Oxoniumyl ion		978.743	975.592	± 0.024	kJ/mol	18.01473 ± 0.00033	56583-62-1*2
Trifluorosilyl anion		-1225.8	-1229.2	± 3.5	kJ/mol	85.08126 ± 0.00030	54711-93-2*0
Ammonium hydroxide			-365.63	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*809
Iminomethylimidogen anion		401.9	400.0	± 2.3	kJ/mol	41.03267 ± 0.00082	150296-30-3*0
Difluorosilylene anion		-653.0	-653.3	± 3.4	kJ/mol	66.08285 ± 0.00030	145089-80-1*0
Difluorosilylene		-629.3	-630.2	± 1.4	kJ/mol	66.08231 ± 0.00030	13966-66-0*0
Difluorosilylene		-314.5	-315.1	± 1.4	kJ/mol	66.08231 ± 0.00030	13966-66-0*1
Peroxyhypochlorous acid cation		1030.4	1024.6	± 2.5	kJ/mol	68.4589 ± 0.0011	67952-07-20
Dicarbon monoxide		377.14	381.19	± 0.83	kJ/mol	40.0208 ± 0.0016	12071-23-7*0
1-Aziridinylium		1265.7	1254.0	± 3.1	kJ/mol	42.0594 ± 0.0016	91127-35-4*1
Isocyanic fluoride anion		74.1	75.7	± 5.7	kJ/mol	45.01639 ± 0.00080	357426-78-9*0
Fluorosilylidyne		297.22	298.44	± 0.62	kJ/mol	47.08390 ± 0.00030	11128-24-8*2
Cyanogen iodide cation		1271.3	1271.2	± 1.7	kJ/mol	152.92136 ± 0.00080	34749-78-5*0
Peroxyhypochlorous acid anion		-32.2	-33.9	± 2.6	kJ/mol	68.4600 ± 0.0011	67952-08-30
1-Aziridinide		244.0	231.6	± 3.3	kJ/mol	42.0604 ± 0.0016	1358579-49-3*0
1-Methylene-2-propenylium		1059.4	1049.3	± 1.7	kJ/mol	53.0820 ± 0.0032	62698-26-4*0
Diazene anion		265.5	258.7	± 2.0	kJ/mol	30.02991 ± 0.00020	100429-75-2*1
Bromoform			8.2	± 1.1	kJ/mol	252.7306 ± 0.0031	75-25-2*590
Hydrogen iodide			-56.496	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*954
Formic acid cation		721.95	715.42	± 0.25	kJ/mol	46.0248 ± 0.0010	50614-05-6*0
Difluoromethane			-468.91	± 0.36	kJ/mol	52.02339 ± 0.00081	75-10-5*590
Formic acid anion		-256.2	-262.3	± 1.8	kJ/mol	46.0259 ± 0.0010	19066-82-1*0
Silylene		271.49	269.82	± 0.84	kJ/mol	30.10138 ± 0.00033	13825-90-6*0
2-Hydroxyethylium		1019.3	1007.2	± 1.5	kJ/mol	45.0600 ± 0.0017	38607-31-7*0
Methoxyethene		-89.3	-106.6	± 1.1	kJ/mol	58.0791 ± 0.0025	107-25-5*0
Ethylene anion		232.1	225.6	± 2.0	kJ/mol	28.0537 ± 0.0016	34527-91-8*0
Disilane cation		1030.2	1017.4	± 2.2	kJ/mol	62.21809 ± 0.00073	96301-43-8*0
Hydrogen fluoride			-322.36	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*833
2-Aziridinyl		360.8	349.3	± 1.7	kJ/mol	42.0599 ± 0.0016	23838-09-70
Hydrogen bromide			-116.68	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*816
Trihydrogen		745.878	743.199	± 0.062	kJ/mol	3.02382 ± 0.00021	12184-91-7*0
2-Aziridinylium		1010.7	998.7	± 3.3	kJ/mol	42.0594 ± 0.0016	91127-35-40
Chlorine trifluoride anion		-480.4	-481.9	± 3.5	kJ/mol	92.44846 ± 0.00090	184289-50-7*0
Acetic acid			-483.75	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*816
Nitric acid			-205.00	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*815
Disilene		288.6	280.0	± 1.8	kJ/mol	60.20276 ± 0.00066	15435-77-5*0
COC vdW		589.8	598.5	± 1.5	kJ/mol	40.0208 ± 0.0016	12071-24-80
Ammonium hydroxide			-365.76	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*811
2-Aziridinylium		1304.8	1293.1	± 4.1	kJ/mol	42.0594 ± 0.0016	91127-35-41
Ammonium hydroxide			-366.39	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*832
Silylsilylene		317.2	309.4	± 2.0	kJ/mol	60.20276 ± 0.00066	50420-90-1*0
Fluorine atom		82.088	83.873	± 0.017	kJ/mol	18.99840320 ± 0.00000050	14762-94-8*2
Acetic acid			-483.92	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*817
1,2-Butadienylium		1099.2	1089.9	± 1.2	kJ/mol	53.0820 ± 0.0032	65114-67-20
Hydrogen fluoride			-322.27	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*832
Oxoiodonium		1066.2	1064.2	± 1.9	kJ/mol	142.90332 ± 0.00030	81182-81-2*0
2-Aziridinylium		1334.8	1323.8	± 4.8	kJ/mol	42.0594 ± 0.0016	91127-35-411
Formate			-425.47	± 0.45	kJ/mol	45.0180 ± 0.0010	71-47-6*800
2-Aziridinide		316.0	303.9	± 3.5	kJ/mol	42.0604 ± 0.0016	111127-93-6*0
Di-mu-hydrodihydrodisilicon		374.5	364.3	± 2.3	kJ/mol	60.20276 ± 0.00066	129970-82-7*0
Di-mu-hydrodihydrodisilicon		374.5	364.1	± 2.3	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	± 3.3	kJ/mol	60.20331 ± 0.00066	129970-83-80
2-Aziridinide		330.0	317.9	± 4.0	kJ/mol	42.0604 ± 0.0016	111127-93-6*1
Hydrogen bromide			-117.38	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*817
Hydrogen bromide			-119.99	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*895
Hydrogen chloride			-166.336	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*832
Formic acid			-424.94	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*924
Dichlorine cation		1108.307	1108.286	± 0.0062	kJ/mol	70.9049 ± 0.0018	12595-90-3*0
Nitric acid			-206.29	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*841
Hydrodioxonitrogen cation		1130.0	1123.4	± 3.0	kJ/mol	47.01293 ± 0.00061	252986-76-8*0
Hydrogen peroxide			-190.70	± 0.30	kJ/mol	34.01468 ± 0.00062	7722-84-1*800
Formic acid			-425.16	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*923
Tetroxidane		-31.27	-41.77	± 0.64	kJ/mol	66.0135 ± 0.0012	29683-94-1*22
Formic acid			-425.43	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*801
Hydrogen bromide			-120.04	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*835
Hydrogen chloride			-166.487	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*835
Nitric acid			-200.29	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*807
Ammonium hydroxide			-365.92	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*813
Hydrogen fluoride			-322.02	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*828
Hydrodioxonitrate		-62.0	-68.4	± 3.2	kJ/mol	47.01403 ± 0.00061	61508-71-2*0
Nitric acid			-206.37	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*844
Hydrogen bromide			-120.06	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*837
Formic acid			-425.53	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*802
Chlorous acid cation		996.6	991.6	± 3.1	kJ/mol	68.4589 ± 0.0011	99559-66-70
1,3-Butadienyl		372.23	363.01	± 0.87	kJ/mol	53.0825 ± 0.0032	86181-68-2*0
Hydrogen chloride			-166.403	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*833
Propylidene anion		300.9	286.7	± 3.2	kJ/mol	42.0803 ± 0.0024	121408-55-70
Hydrogen iodide			-56.044	± 0.097	kJ/mol	127.912410 ± 0.000076	10034-85-2*828
Hydrogen bromide			-120.08	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*838
Aminomethylidyne anion		481.6	478.1	± 3.2	kJ/mol	28.03387 ± 0.00082	96808-04-7*1
Formic acid			-425.50	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*803
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			-120.10	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*839
1,3-Butadienyl		374.9	364.4	± 1.9	kJ/mol	53.0825 ± 0.0032	86181-68-2*12
Ammonium hydroxide			-366.07	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*816
Hydroperoxyimidogen		111.9	109.0	± 2.8	kJ/mol	47.01348 ± 0.00061	877456-58-1*2
Benzvalene cation		1200.2	1184.8	± 2.7	kJ/mol	78.1113 ± 0.0048	81050-63-7*0
Formic acid			-425.46	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*804
Hydrogen fluoride			-328.59	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*855
Acetic acid			-484.79	± 0.27	kJ/mol	60.0520 ± 0.0017	64-19-7*1000
1,3-Butadienyl		384.0	374.5	± 1.9	kJ/mol	53.0825 ± 0.0032	86181-68-2*21
C=O-C cation		1585.8	1592.9	± 2.7	kJ/mol	40.0203 ± 0.0016	83483-98-1*0
Formic acid			-425.42	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*805
Hydrogen iodide			-56.073	± 0.096	kJ/mol	127.912410 ± 0.000076	10034-85-2*892
1,3-Butadienyl		385.5	375.3	± 1.9	kJ/mol	53.0825 ± 0.0032	86181-68-2*22
Ammonium hydroxide			-366.13	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*817
(Dimethylamino)methyl anion		190.9	166.6	± 3.3	kJ/mol	58.1029 ± 0.0025	125231-49-4*0
Water		-286.276	-285.804	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*499
Butadienylacetylene		358.8	346.4	± 1.9	kJ/mol	78.1118 ± 0.0048	10420-90-3*0
1,3-Butadienylium		1133.6	1123.6	± 2.5	kJ/mol	53.0820 ± 0.0032	86181-69-3*0
(3Z)-1,3-Hexadien-5-yne	$C=C/C=C\C#C$	358.8	346.2	± 2.5	kJ/mol	78.1118 ± 0.0048	5222-76-4*0
Divinylacetylene		361.8	350.7	± 1.9	kJ/mol	78.1118 ± 0.0048	821-08-9*0
Formic acid			-425.36	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*807
Divinylacetylene		362.4	351.3	± 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
Acetic acid			-483.01	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*923
Biallenyl		419.5	408.2	± 2.3	kJ/mol	78.1118 ± 0.0048	29776-96-3*2
Propargylallene		431.4	420.0	± 1.4	kJ/mol	78.1118 ± 0.0048	33142-15-3*0
Ethylidene		361.30	354.32	± 0.48	kJ/mol	28.0532 ± 0.0016	4218-50-2*0
Propargylallene		432.3	420.7	± 2.2	kJ/mol	78.1118 ± 0.0048	33142-15-3*2
Formic acid			-425.30	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*809
Formic acid			-425.26	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*811
3-Methylene-1-penten-4-yne		362.6	350.2	± 2.2	kJ/mol	78.1118 ± 0.0048	6929-96-0*0
3-Methylene-1-penten-4-yne		374.7	362.4	± 2.8	kJ/mol	78.1118 ± 0.0048	6929-96-0*3
1,2,3,5-Hexatetraene		391.7	380.4	± 1.6	kJ/mol	78.1118 ± 0.0048	60239-33-0*0
Peroxyformic acid		-279.25	-288.38	± 0.63	kJ/mol	62.0248 ± 0.0012	107-32-4*0
1,2,3,5-Hexatetraene		400.5	388.9	± 2.3	kJ/mol	78.1118 ± 0.0048	60239-33-0*2
Cyanogen		273.95	289.20	± 0.42	kJ/mol	52.0349 ± 0.0016	460-19-5*500
Oxirane		-77.25	-77.91	± 0.62	kJ/mol	44.0526 ± 0.0017	75-21-8*500
Acetic acid			-482.91	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*801
Hypobromous acid cation		975.25	964.63	± 0.54	kJ/mol	96.9108 ± 0.0010	154804-02-1*0
Hydrogen chloride			-161.148	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*815
Oxide		651.	653.	± 15.	kJ/mol	16.00050 ± 0.00030	16833-27-5*0
Ammonium hydroxide			-366.24	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*819
Hydrogen chloride			-166.885	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*852
Hydrogen iodide			-56.730	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*852
Formic acid			-425.23	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*812
Chlorine pentafluoride cation		1005.9	996.9	± 3.2	kJ/mol	130.44417 ± 0.00090	478167-78-1*0
Acetic acid			-484.11	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*818
1-Methylallyl		152.61	136.14	± 0.79	kJ/mol	55.0984 ± 0.0032	15819-46-2*0
Hydrogen fluoride			-330.14	± 0.17	kJ/mol	20.006343 ± 0.000070	7664-39-3*861
Formic acid			-425.21	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*813
1-Methyl-1-propenyl		240.06	224.67	± 0.66	kJ/mol	55.0984 ± 0.0032	71790-71-1*0
Chlorous acid anion		-154.3	-156.1	± 3.3	kJ/mol	68.4600 ± 0.0011	99559-66-7*0
1-Methyl-1-propenyl		243.4	227.0	± 1.9	kJ/mol	55.0984 ± 0.0032	71790-71-1*2
Hydrogen iodide			-56.136	± 0.097	kJ/mol	127.912410 ± 0.000076	10034-85-2*829
Formic acid			-425.20	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*814
1-Butenyl		263.42	246.36	± 0.68	kJ/mol	55.0984 ± 0.0032	2669-61-6*0
Nitrous oxide			61.42	± 0.11	kJ/mol	44.01288 ± 0.00033	10024-97-2*1000
1-Butenyl		263.8	246.6	± 1.9	kJ/mol	55.0984 ± 0.0032	2669-61-6*3
Trihydrogen cation		1110.577	1106.695	± 0.013	kJ/mol	3.02327 ± 0.00021	28132-48-1*1
1-Ethynyl-2-propyn-1-ylium-1-yl		1537.2	1540.8	± 2.6	kJ/mol	62.0688 ± 0.0040	217822-76-9*0
1-Ethynyl-2-propyn-1-ylidene anion		584.3	589.3	± 3.5	kJ/mol	62.0699 ± 0.0040	217822-70-3*0
1-Ethynyl-2-propyn-1-ylidene		727.0	734.1	± 1.7	kJ/mol	62.0694 ± 0.0040	882068-94-2*0
1-Ethynyl-2-propyn-1-ylidene		787.5	793.0	± 2.1	kJ/mol	62.0694 ± 0.0040	882068-94-2*2
Isocyanogen anion		386.6	388.7	± 3.3	kJ/mol	52.0354 ± 0.0016	83951-85-30
Diatomic bromine cation		1060.34	1045.39	± 0.23	kJ/mol	159.8075 ± 0.0020	12595-71-0*0
Hydrazine anion		232.3	217.9	± 4.1	kJ/mol	32.04579 ± 0.00031	65391-88-0*0
Acetic acid			-482.85	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*802
1,2-Pentadien-4-ynylidene		791.3	794.0	± 2.4	kJ/mol	62.0694 ± 0.0040	195524-67-5*0
2-Cyclopropen-1-ylideneethenylidene		807.2	808.8	± 3.4	kJ/mol	62.0694 ± 0.0040	195524-69-7*0
Methoxyethene		-81.9	-99.0	± 2.4	kJ/mol	58.0791 ± 0.0025	107-25-5*1
Formic acid			-425.19	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*815
Ethylamine			-76.80	± 0.67	kJ/mol	45.0837 ± 0.0017	75-04-7*500
Formic acid			-425.19	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*816
Hydrogen bromide			-118.02	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*818
1-Propen-1-yl-3-ylidene		656.7	653.3	± 1.1	kJ/mol	39.0559 ± 0.0024	84654-90-0*0
Ammonium hydroxide			-366.26	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*820
Diisocyanogen anion		456.8	462.5	± 3.6	kJ/mol	52.0354 ± 0.0016	78800-22-30
1-Aminoethyl anion		174.5	157.0	± 3.2	kJ/mol	44.0763 ± 0.0017	59263-55-7*0
Ammonium hydroxide			-366.31	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*821
Formic acid			-425.19	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*817
Ethylaminylium		1092.4	1077.3	± 2.4	kJ/mol	44.0752 ± 0.0017	54387-08-5*1
Ethylaminylium		1094.9	1079.1	± 2.9	kJ/mol	44.0752 ± 0.0017	54387-08-5*12
Hydrogen iodide			-56.195	± 0.097	kJ/mol	127.912410 ± 0.000076	10034-85-2*830
Diisocyanogen cation		1825.3	1828.5	± 3.2	kJ/mol	52.0343 ± 0.0016	78800-21-20
Hydrogen bromide			-120.17	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*840
Fluorosyl fluoride cation		1413.1	1413.4	± 3.5	kJ/mol	53.99566 ± 0.00030	86825-50-50
N-Methylethanamine			-74.9	± 2.3	kJ/mol	59.1103 ± 0.0025	624-78-2*500
Nitrosodioxaziridine		415.3	409.5	± 2.8	kJ/mol	76.01168 ± 0.00091	132871-99-9*3
Hydrogen iodide			-56.780	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*861
Formic acid			-425.19	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*818
2-Methyl-2-propanamine			-150.60	± 0.53	kJ/mol	73.1369 ± 0.0033	75-64-9*590
Ethoxyethene		-117.8	-136.3	± 1.5	kJ/mol	72.1057 ± 0.0033	109-92-2*0
Formic acid			-425.20	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*819
Hydrogen fluoride			-321.85	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*888
Naphtalene cation		956.98	933.91	± 0.55	kJ/mol	128.1700 ± 0.0080	34512-27-1*0
Naphtalene anion		187.7	164.8	± 3.0	kJ/mol	128.1711 ± 0.0080	34509-91-6*0
Diazoethenylidene cation		1771.1	1773.1	± 3.5	kJ/mol	52.0343 ± 0.0016	130760-10-00
Dioxyamidogen		251.2	244.6	± 2.5	kJ/mol	47.01348 ± 0.00061	71843-95-3*1
Hydrogen bromide			-120.44	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*855
Acetic acid			-484.23	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*819
1-Propen-1-yl-3-ylidene		656.7	653.2	± 2.0	kJ/mol	39.0559 ± 0.0024	84654-90-0*12
Diazoethenylidene anion		529.6	532.2	± 3.5	kJ/mol	52.0354 ± 0.0016	130760-11-10
Ammonium hydroxide			-366.33	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*891
Nitric acid			-206.41	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*850
Formic acid			-425.21	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*820
3H-diazirin-3-ylidene-methylene		837.3	839.9	± 2.3	kJ/mol	52.0349 ± 0.0016	204253-88-3*0
Formic acid			-425.22	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*821
Formic acid			-425.24	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*822
Formic acid			-425.25	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*891
Ammonium hydroxide			-366.35	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*825
Nitric acid			-205.92	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*818
Acetic acid			-482.87	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*803
Acetic acid			-484.31	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*820
1,3-Propanediyl		319.3	307.9	± 1.3	kJ/mol	42.0797 ± 0.0024	32458-33-6*0
Acetic acid			-482.96	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*804
Formic acid			-425.27	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*825
Hydrogen bromide			-118.36	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*819
Benzophenone			-24.8	± 1.5	kJ/mol	182.2179 ± 0.0104	119-61-9*590
Water anion		-50.1	-53.0	± 4.3	kJ/mol	18.01583 ± 0.00033	12259-30-2*0
1-Propen-1-yl-3-ylidene		665.8	662.3	± 2.0	kJ/mol	39.0559 ± 0.0024	84654-90-0*13
Butadiynylium		1781.3	1787.8	± 3.2	kJ/mol	49.0502 ± 0.0032	76108-67-3*0
1-Propen-1-yl-3-ylidene		699.3	696.3	± 3.4	kJ/mol	39.0559 ± 0.0024	84654-90-0*2
Propylidene		349.52	335.83	± 0.92	kJ/mol	42.0797 ± 0.0024	6700-78-3*0
Formic acid			-425.30	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*892
Formic acid			-425.33	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*830
Formic acid			-425.34	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*831
Hydrogen chloride			-166.541	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*838
Helium		-0.000	-0.000	± 0.000	kJ/mol	4.0026020 ± 0.0000020	7440-59-7*2
Formic acid			-425.34	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*832
Fluorosyl fluoride		192.8	193.3	± 2.3	kJ/mol	53.99621 ± 0.00030	86825-57-2*0
Helium dication		7622.839	7622.839	± 0.000	kJ/mol	4.0015048 ± 0.0000020	12587-46-1*0
Hydrogen fluoride			-322.08	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*830
Acetic acid			-484.43	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*821
Water		-286.276	-292.717	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*509
Hydrogen iodide			-56.412	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*835
Hydrogen iodide			-56.433	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*837
Dihelium		1761.349	1757.613	± 0.018	kJ/mol	8.0052040 ± 0.0000040	12184-98-4*2
1H-Diazirin-3-ylium		1527.2	1523.7	± 2.0	kJ/mol	41.03157 ± 0.00082	735234-64-7*0
Hydrohelate		143.256	139.027	± 0.0021	kJ/mol	5.011091 ± 0.000070	12325-01-8*0
Hydrogen fluoride			-322.12	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*908
Hydrogen peroxide cation		931.05	924.17	± 0.98	kJ/mol	34.01413 ± 0.00062	12325-10-9*21
1H-diazirin-3-ide		379.8	376.7	± 2.0	kJ/mol	41.03267 ± 0.00082	735234-64-70
1-Methoxyethenol		-284.3	-302.7	± 1.2	kJ/mol	74.0785 ± 0.0025	4453-91-2*0
Hydrogen fluoride			-324.14	± 0.14	kJ/mol	20.006343 ± 0.000070	7664-39-3*843
Oxirene		273.20	271.04	± 0.92	kJ/mol	42.0367 ± 0.0016	157-18-6*0
Oxirene		387.9	384.6	± 1.3	kJ/mol	42.0367 ± 0.0016	157-18-6*1
1,2-Difluoroethene		-302.81	-308.90	± 0.89	kJ/mol	64.0341 ± 0.0016	1691-13-0*0
Acetic acid			-483.36	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*812
Peroxychlorous acid		101.5	95.4	± 3.6	kJ/mol	84.4588 ± 0.0013	177778-92-6*3
Hydrogen bromide			-92.67	± 0.13	kJ/mol	80.9119 ± 0.0010	10035-10-6*803
Acetic acid			-484.51	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*822
Difluorovinylidene anion		-88.2	-87.1	± 2.3	kJ/mol	62.0188 ± 0.0016	107693-92-5*0
Neon decacation		338828.3	338828.3	± 1.4	kJ/mol	20.17421 ± 0.00060	32218-07-8*0
Neon hydride		215.989	211.755	± 0.024	kJ/mol	21.18764 ± 0.00060	17438-52-7*0
Formic acid			-425.34	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*833
Hydroneonate		143.096	142.084	± 0.035	kJ/mol	21.18819 ± 0.00060	75514-98-6*0
Water dimer cation		556.9	546.4	± 3.0	kJ/mol	36.03001 ± 0.00066	158061-35-9*0
Dibromovinylidene		510.6	499.5	± 4.1	kJ/mol	183.8294 ± 0.0026	261771-36-2*0
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*895
Fluorovinylidene		298.9	300.1	± 3.1	kJ/mol	44.0277 ± 0.0016	70302-00-0*0
Krypton dication		3701.124	3701.124	± 0.013	kJ/mol	83.7989 ± 0.1000	18469-91-5*0
Propene		7.73	4.03	± 0.82	kJ/mol	42.0797 ± 0.0024	115-07-1*500
Xenon dication		3194.14	3194.14	± 0.36	kJ/mol	131.2889 ± 0.0200	14066-95-6*0
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*834
Peroxyformyl		-100.42	-105.52	± 0.67	kJ/mol	61.0168 ± 0.0012	56240-83-6*0
Acetic acid			-483.04	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*805
Water		-238.620	-241.808	± 0.022	kJ/mol	18.01528 ± 0.00033	7732-18-5*1
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*835
Cyanogen chloride cation		1326.23	1327.56	± 0.95	kJ/mol	61.4696 ± 0.0012	37612-72-9*0
Trichlorine cation		1196.6	1197.2	± 3.2	kJ/mol	106.3576 ± 0.0027	33088-85-6*1
Cyanogen chloride anion		46.9	51.2	± 3.1	kJ/mol	61.4707 ± 0.0012	12281-43-5*0
Bromovinylidene		466.4	460.4	± 3.8	kJ/mol	104.9333 ± 0.0019	161957-27-3*0
Sulfur atom hexacation		26947.2	26949.0	± 3.4	kJ/mol	32.0627 ± 0.0060	22537-26-4*0
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*837
Sulfur atom dianion		454.0	455.8	± 3.2	kJ/mol	32.0671 ± 0.0060	18496-25-8*0
Acetic acid			-483.15	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*807
Disulfur cation		1031.49	1032.08	± 0.32	kJ/mol	64.1315 ± 0.0120	12597-02-3*0
Disulfur anion		-34.06	-33.12	± 0.52	kJ/mol	64.1325 ± 0.0120	12185-15-8*0
Tetroxidane		-30.94	-41.39	± 0.64	kJ/mol	66.0135 ± 0.0012	29683-94-1*23
Hypochloroperoxoous acid, hydroxy ester		48.4	41.6	± 1.8	kJ/mol	84.4588 ± 0.0013	928652-99-7*0
Sulfonyl cation		897.01	894.74	± 0.13	kJ/mol	64.0643 ± 0.0060	12439-77-9*0
Sulfur dioxide		-331.5	-320.1	± 1.9	kJ/mol	64.0648 ± 0.0060	7446-09-5*500
Formic acid			-425.35	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*838
Ethynol cation		1063.9	1061.2	± 2.9	kJ/mol	42.0361 ± 0.0016	84005-02-7*0
Nitrato		1290.60	1285.89	± 0.86	kJ/mol	62.00439 ± 0.00090	133057-96-2*0
Formic acid			-425.36	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*839
Oxosulfate		-102.66	-101.89	± 0.50	kJ/mol	48.0659 ± 0.0060	12269-52-2*0
Formic acid			-425.36	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*841
Sulfur trioxide cation		847.60	844.70	± 0.68	kJ/mol	80.0637 ± 0.0061	12710-95-1*0
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*836
Sulfite		-275.1	-280.7	± 4.4	kJ/mol	80.0653 ± 0.0061	14265-45-3*0
Difluorophosgene anion		-602.3	-604.2	± 3.3	kJ/mol	66.00745 ± 0.00085	474815-26-4*0
Ethoxyethene		-111.3	-135.2	± 2.3	kJ/mol	72.1057 ± 0.0033	109-92-2*21
Sulfur oxide peroxide		-26.0	-30.2	± 2.3	kJ/mol	80.0642 ± 0.0061	175799-68-5*0
Formic acid			-425.37	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*844
Sulfur oxide peroxide		-3.5	-7.1	± 3.0	kJ/mol	80.0642 ± 0.0061	175799-68-5*1
2-Cyclopropyn-1-ylidene		898.4	905.3	± 1.5	kJ/mol	36.0321 ± 0.0024	102508-15-6*0
Hydrogen bromide			-120.33	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*846
Sulfuryl dichloride cation		814.1	809.8	± 3.2	kJ/mol	134.9697 ± 0.0063	7791-25-50
Dichlorodioxosulfate		-604.8	-607.4	± 3.5	kJ/mol	134.9707 ± 0.0063	12599-04-1*0
Peroxyformate		-340.95	-346.39	± 0.80	kJ/mol	61.0174 ± 0.0012	104960-05-6*0
Disulfur oxide cation		970.53	969.25	± 0.60	kJ/mol	80.1309 ± 0.0120	135758-60-0*0
Oxothioxosulfate		-231.95	-233.56	± 0.87	kJ/mol	80.1319 ± 0.0120	12143-07-6*0
Fluoro(fluorooxy)methylene		-134.8	-136.0	± 1.3	kJ/mol	66.00691 ± 0.00085	479587-30-9*0
Hydrogen bromide			-118.59	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*820
Sulfoniumyl		992.66	989.75	± 0.18	kJ/mol	34.0813 ± 0.0060	26453-60-1*0
Dihydrogen sulfide ion		108.2	106.9	± 3.2	kJ/mol	34.0824 ± 0.0060	12311-21-6*0
Formic acid			-425.37	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*850
Hydrogen chloride			-166.430	± 0.024	kJ/mol	36.46064 ± 0.00090	7647-01-0*895
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*837
Methanediimine cation		1137.8	1135.7	± 2.2	kJ/mol	42.03951 ± 0.00082	1189338-16-6*0
Ethynylamidogen anion		233.7	230.5	± 3.2	kJ/mol	40.0446 ± 0.0016	64066-03-1*0
Hydrogen iodide			-36.91	± 0.56	kJ/mol	127.912410 ± 0.000076	10034-85-2*805
Hydrogen iodide			-56.274	± 0.092	kJ/mol	127.912410 ± 0.000076	10034-85-2*831
Sulfuric acid cation		401.3	388.3	± 3.3	kJ/mol	98.0789 ± 0.0061	247933-66-0*0
Nitric acid			-206.00	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*819
Methanediimine cation		1139.0	1136.2	± 3.2	kJ/mol	42.03951 ± 0.00082	1189338-16-6*1
Formic acid			-425.38	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*852
Nitric acid			-205.69	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*817
Sulfate			-909.16	± 0.13	kJ/mol	96.0647 ± 0.0061	14808-79-8*800
Iodine monochloride		-36.511	-35.537	± 0.063	kJ/mol	162.35717 ± 0.00090	7790-99-0*500
Chlorine pentafluoride anion		-619.1	-622.6	± 4.3	kJ/mol	130.44526 ± 0.00090	184851-42-1*0
Sulfuric acid			-880.42	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*815
Sulfuric acid			-882.02	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*816
Sulfuric acid			-883.51	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*817
Sulfuric acid			-884.80	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*818
Sulfuric acid			-885.47	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*819
Formic acid			-425.39	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*855
Phosgene cation		897.0	896.0	± 1.7	kJ/mol	98.9150 ± 0.0020	73249-38-4*0
Formic acid			-425.42	± 0.60	kJ/mol	46.0254 ± 0.0010	64-18-6*861
Phosgene			-242.79	± 0.25	kJ/mol	98.9155 ± 0.0020	75-44-5*501
Sulfuric acid			-888.08	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*829
Sulfuric acid			-888.52	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*830
Sulfuric acid			-889.26	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*831
Sulfuric acid			-889.86	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*832
Sulfuric acid			-890.38	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*833
Sulfuric acid			-890.87	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*834
Phosgene		-255.49	-242.79	± 0.25	kJ/mol	98.9155 ± 0.0020	75-44-5*502
Ethynol anion		163.6	165.1	± 3.3	kJ/mol	42.0372 ± 0.0016	864971-50-6*0
Sulfuric acid			-891.94	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*838
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
Cyanic fluoride anion		-20.7	-18.7	± 2.9	kJ/mol	45.01639 ± 0.00080	34507-50-1*0
Sulfuric acid			-897.00	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*843
Nitric acid			-203.78	± 0.18	kJ/mol	63.01288 ± 0.00091	7697-37-2*812
Tetraoxidanyl		2.1	0.4	± 2.9	kJ/mol	65.0055 ± 0.0012	69696-93-1*0
Hydrogen iodide			-44.15	± 0.30	kJ/mol	127.912410 ± 0.000076	10034-85-2*807
Sulfuric acid			-903.21	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*852
Sulfuric acid			-905.91	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*855
Sulfuric acid			-907.21	± 0.13	kJ/mol	98.0795 ± 0.0061	7664-93-9*861
Hydrogen cyanide anion		129.534	129.055	± 0.087	kJ/mol	27.02593 ± 0.00081	12334-27-9*0
Chlorohydroxymethylene		14.4	11.5	± 3.2	kJ/mol	64.4707 ± 0.0012	147723-60-2*2
Chlorohydroxymethylene		14.0	11.3	± 2.5	kJ/mol	64.4707 ± 0.0012	147723-60-2*0
Hydrogen fluoride			-321.91	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*904
(Chlorooxy)methylene		155.5	155.3	± 3.7	kJ/mol	64.4707 ± 0.0012	331419-80-8*1
(Chlorooxy)methylene		119.3	117.9	± 2.7	kJ/mol	64.4707 ± 0.0012	331419-80-8*0
Hydrogen iodide			-56.764	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*855
1,2-Propadien-1-yl-3-ylidene anion		621.7	629.1	± 1.3	kJ/mol	36.0326 ± 0.0024	109292-47-9*1
Hydrogen chloride			-164.169	± 0.023	kJ/mol	36.46064 ± 0.00090	7647-01-0*819
Chloroformyl anion		-356.5	-352.9	± 3.3	kJ/mol	63.4633 ± 0.0012	41976-93-6*0
1-Hydroxy-2-propanone		-354.48	-373.81	± 0.84	kJ/mol	74.0785 ± 0.0025	116-09-6*0
Ethynol		406.4	403.2	± 3.2	kJ/mol	42.0367 ± 0.0016	32038-79-2*12
Acetic acid			-484.54	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*891
Hydrogen iodide			-47.73	± 0.32	kJ/mol	127.912410 ± 0.000076	10034-85-2*809
Ethynol		409.4	406.3	± 3.2	kJ/mol	42.0367 ± 0.0016	32038-79-2*13
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*895
Ethynol		455.5	452.2	± 3.2	kJ/mol	42.0367 ± 0.0016	32038-79-2*14
Ethenol		-113.31	-123.66	± 0.38	kJ/mol	44.0526 ± 0.0017	557-75-5*0
2-Iodoethanol		-131.9	-150.2	± 2.5	kJ/mol	171.9650 ± 0.0017	624-76-0*0
Ethoxyethene		-110.8	-133.0	± 2.6	kJ/mol	72.1057 ± 0.0033	109-92-2*1
Ethynol		464.2	460.9	± 3.2	kJ/mol	42.0367 ± 0.0016	32038-79-2*15
1,3,5-Hexatriyne cation		1600.8	1605.5	± 2.8	kJ/mol	74.0795 ± 0.0048	61866-06-6*0
Hydrogen bromide			-120.23	± 0.12	kJ/mol	80.9119 ± 0.0010	10035-10-6*898
Cyanoamidogen		322.72	320.23	± 0.63	kJ/mol	41.03212 ± 0.00082	12347-01-2*0
Hydrogen fluoride			-323.83	± 0.12	kJ/mol	20.006343 ± 0.000070	7664-39-3*842
Sulfur hydroxide oxide		-474.1	-483.1	± 1.7	kJ/mol	97.0715 ± 0.0061	12337-07-4*0
Sulfur hydroxide oxide		-473.3	-482.6	± 2.5	kJ/mol	97.0715 ± 0.0061	12337-07-4*2
Sulfur hydroxide oxide cation		659.0	648.7	± 3.5	kJ/mol	97.0710 ± 0.0061	12337-07-40
Sulfur hydroxide oxide cation		663.5	652.6	± 3.9	kJ/mol	97.0710 ± 0.0061	12337-07-41
Cyanoamidogen		652.4	650.3	± 1.2	kJ/mol	41.03212 ± 0.00082	12347-01-2*2
Hydrogen iodide			-56.320	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*832
Sulfurous acid		-507.0	-517.6	± 1.3	kJ/mol	82.0801 ± 0.0061	7782-99-2*1
Sulfurous acid		-497.4	-507.5	± 1.4	kJ/mol	82.0801 ± 0.0061	7782-99-2*3
Hydrogen peroxide cation		897.31	890.30	± 0.51	kJ/mol	34.01413 ± 0.00062	12325-10-9*12
Cyanoaminylium		1363.1	1360.8	± 1.3	kJ/mol	41.03157 ± 0.00082	205443-18-1*0
Acetic acid			-483.18	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*808
Sulfite			-635.25	± 0.15	kJ/mol	80.0653 ± 0.0061	14265-45-3*800
Sulfurous acid			-610.09	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*828
Sulfurous acid			-610.81	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*829
Sulfurous acid			-611.35	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*830
Sulfurous acid			-611.78	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*908
Sulfurous acid			-612.16	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*831
Sulfurous acid			-612.76	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*832
Sulfurous acid			-613.26	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*833
Sulfurous acid			-614.20	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*836
Sulfurous acid			-614.89	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*839
Sulfurous acid			-615.98	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*840
Sulfurous acid			-616.74	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*841
Sulfurous acid			-617.78	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*842
Sulfurous acid			-618.19	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*899
Sulfurous acid			-618.52	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*843
Sulfurous acid			-619.11	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*844
Sulfurous acid			-620.09	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*847
Sulfurous acid			-620.68	± 0.14	kJ/mol	82.0801 ± 0.0061	7782-99-2*850
Sulfonic acid		-482.2	-494.7	± 1.4	kJ/mol	82.0801 ± 0.0061	7782-99-20
Hydrogen iodide			-56.358	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*833
Trihydrogen		477.4	474.7	± 2.3	kJ/mol	3.02382 ± 0.00021	12184-91-7*201
Ethoxyethene		-108.8	-132.0	± 2.3	kJ/mol	72.1057 ± 0.0033	109-92-2*11
Ethynylaminylium		1277.8	1277.4	± 2.6	kJ/mol	40.0435 ± 0.0016	103835-08-1*0
Cyanoamidogen anion		391.7	389.9	± 1.8	kJ/mol	41.03267 ± 0.00082	67131-47-9*1
Methanethiol cation		901.89	891.85	± 0.46	kJ/mol	48.1079 ± 0.0061	53369-41-8*0
Hydrogen iodide			-49.965	± 0.096	kJ/mol	127.912410 ± 0.000076	10034-85-2*811
Ozone			118.20	± 0.75	kJ/mol	47.99820 ± 0.00090	10028-15-6*1000
1,3,5-Hexatriynylium		1924.4	1933.5	± 8.4	kJ/mol	73.0716 ± 0.0048	81932-75-4*1
Thioformaldehyde anion		75.8	72.8	± 2.7	kJ/mol	46.0931 ± 0.0061	71928-47-7*0
Thioformaldehyde		121.3	117.6	± 2.0	kJ/mol	46.0926 ± 0.0061	865-36-1*0
Thioformaldehyde		294.9	292.3	± 2.0	kJ/mol	46.0926 ± 0.0061	865-36-1*3
Trioxidane		-81.73	-90.32	± 0.41	kJ/mol	50.01408 ± 0.00091	14699-99-1*0
Ethanethiol cation		867.11	850.95	± 0.59	kJ/mol	62.1345 ± 0.0062	69762-64-7*0
Diazenide		175.6	176.7	± 1.6	kJ/mol	29.02197 ± 0.00016	71004-29-0*0
Tetraoxidanyl		76.7	69.5	± 6.1	kJ/mol	65.0055 ± 0.0012	69696-93-1*1
Dimethyl sulfide cation		817.86	802.11	± 0.48	kJ/mol	62.1345 ± 0.0062	34480-65-4*0
Nitrosodioxaziridine		413.7	408.2	± 1.8	kJ/mol	76.01168 ± 0.00091	132871-99-9*0
Bromine atom		162.009	155.947	± 0.055	kJ/mol	79.90400 ± 0.00100	10097-32-2*2
Cyclopropane		41.51	35.83	± 0.48	kJ/mol	42.0797 ± 0.0024	75-19-4*500
Hydrogen iodide			-56.554	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*841
Hydrogen iodide			-56.667	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*846
2-Propene-1,2-diol		-295.4	-314.4	± 1.2	kJ/mol	74.0785 ± 0.0025	44169-27-9*0
Cyanoamidogen anion		392.4	390.4	± 6.2	kJ/mol	41.03267 ± 0.00082	67131-47-9*11
Carbon disulfide cation		1088.29	1090.04	± 0.68	kJ/mol	76.1422 ± 0.0120	12539-80-9*0
Sulfidocarbonothioyl		73.5	75.0	± 3.3	kJ/mol	76.1432 ± 0.0120	12122-00-8*0
1-Methylethylidene		316.06	303.16	± 0.97	kJ/mol	42.0797 ± 0.0024	40852-89-9*0
Vinyl alcohol cation		778.6	767.7	± 1.3	kJ/mol	44.0520 ± 0.0017	57239-63-1*0
Carbon monosulfide cation		1371.35	1374.58	± 0.78	kJ/mol	44.0762 ± 0.0061	12351-95-0*0
Carbon monosulfide anion		259.1	262.9	± 2.2	kJ/mol	44.0772 ± 0.0061	12121-99-2*0
Perchloric acid cation		1190.2	1180.6	± 3.3	kJ/mol	100.4577 ± 0.0015	91712-47-9*0
Cycloprop-2-yliumyl		1225.44	1218.28	± 0.59	kJ/mol	40.0633 ± 0.0024	65812-78-4*0
Platinum atom anion		358.4	358.9	± 1.7	kJ/mol	195.0785 ± 0.0020	40817-31-0*0
Hydrogen iodide			-56.692	± 0.090	kJ/mol	127.912410 ± 0.000076	10034-85-2*850
Platinum dimer cation		1661.0	1659.6	± 4.3	kJ/mol	390.1555 ± 0.0040	73146-08-4*0
Platinum dimer anion		640.3	639.8	± 3.9	kJ/mol	390.1565 ± 0.0040	153298-77-2*0
Nitrogen atom heptacation		143853.27	143855.13	± 0.23	kJ/mol	14.002900 ± 0.000070	40549-08-4*0
Acetic acid			-483.22	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*809
Acetic acid			-483.28	± 0.33	kJ/mol	60.0520 ± 0.0017	64-19-7*811
Hydrogen atom		-37.0	-40.2	± 1.1	kJ/mol	1.007940 ± 0.000070	12385-13-6*1001000
Hydrogen fluoride			-322.65	± 0.11	kJ/mol	20.006343 ± 0.000070	7664-39-3*838
Oxooxoniumylmethoxy		1178.0	1177.3	± 5.7	kJ/mol	60.0084 ± 0.0012	952586-28-6*0
Diazomethyl		467.86	465.30	± 0.68	kJ/mol	41.03212 ± 0.00082	20813-32-5*0
Carbonylmethyloxonium		561.2	552.9	± 3.0	kJ/mol	59.0435 ± 0.0017	24434-00-2*0
Hydrogen atom		-32.	-34.	± 20.	kJ/mol	1.007940 ± 0.000070	12385-13-6*1002000
Ammonium hydroxide			-366.38	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*838
Nitrogen atom		700.559	702.462	± 0.022	kJ/mol	14.006740 ± 0.000070	17778-88-0*2
Ammonium hydroxide			-366.37	± 0.41	kJ/mol	35.04584 ± 0.00047	1336-21-6*840
Oxonium		605.95	599.14	± 0.17	kJ/mol	19.02267 ± 0.00037	13968-08-6*1
Hydroxyformyl		-181.15	-183.70	± 0.40	kJ/mol	45.0174 ± 0.0010	2564-86-5*0
Argon cation		1520.571	1520.580	± 0.000	kJ/mol	39.94745 ± 0.00100	14791-69-6*0
Argon dimer cation		1393.760	1391.173	± 0.018	kJ/mol	79.8955 ± 0.0020	17596-58-6*0
Argon atom dication		4186.429	4186.468	± 0.013	kJ/mol	39.94690 ± 0.00100	15056-24-3*0
Argon dimer		-1.013	-6.347	± 0.0051	kJ/mol	79.8960 ± 0.0020	12595-59-4*0
Argon anion		25.	25.	± 28.	kJ/mol	39.94855 ± 0.00100	16544-90-4*1
Neon anion		13.	13.	± 29.	kJ/mol	20.18025 ± 0.00060	20205-95-2*0
Argon anion		25.	25.	± 28.	kJ/mol	39.94855 ± 0.00100	16544-90-4*0
Helium anion		51.	51.	± 130.	kJ/mol	4.0031506 ± 0.0000020	14452-58-5*1
Helium anion		51.	51.	± 130.	kJ/mol	4.0031506 ± 0.0000020	14452-58-5*0
Dihelium		-0.000	-6.197	± 0.000	kJ/mol	8.0052040 ± 0.0000040	12184-98-4*3
Dihelium		-0.000	-6.197	± 0.000	kJ/mol	8.0052040 ± 0.0000040	12184-98-4*0
Dinitrogen			-10.30	± 0.32	kJ/mol	28.01348 ± 0.00014	7727-37-9*1000
Dichlorine		-30.21	-18.49	± 0.51	kJ/mol	70.9054 ± 0.0018	7782-50-5*500
Helium anion		1868.42	1868.42	± 0.19	kJ/mol	4.0031506 ± 0.0000020	14452-58-5*2
Helium			-0.69	± 0.16	kJ/mol	4.0026020 ± 0.0000020	7440-59-7*1000
Dichlorine			-16.54	± 0.12	kJ/mol	70.9054 ± 0.0018	7782-50-5*1000
Dihydrogen			-4.099	± 0.080	kJ/mol	2.01588 ± 0.00014	1333-74-0*1000
Neon			-3.87	± 0.16	kJ/mol	20.17970 ± 0.00060	7440-01-9*1000
Dioxygen			-11.961	± 0.041	kJ/mol	31.99880 ± 0.00060	7782-44-7*1000
Argon anion		1111.116	1111.116	± 0.098	kJ/mol	39.94855 ± 0.00100	16544-90-4*2
Argon			-12.24	± 0.16	kJ/mol	39.94800 ± 0.00100	7440-37-1*1000
Krypton anion		110.	110.	± 350.	kJ/mol	83.8005 ± 0.1000	20205-93-0*0
Krypton			-15.63	± 0.16	kJ/mol	83.8000 ± 0.1000	7439-90-9*1000
Xenon			-19.39	± 0.64	kJ/mol	131.2900 ± 0.0200	7440-63-3*1000
Radon cation		1037.07	1037.07	± 0.61	kJ/mol	221.9995 ± 0.1000	22541-65-7*0
Radon			-21.33	± 0.96	kJ/mol	222.0000 ± 0.1000	10043-92-2*1000
Hydron		0	0	exact		1.007391 ± 0.000070	12408-02-5*800

References

1		B. Ruscic, R. E. Pinzon, M. L. Morton, G. von Laszewski, S. Bittner, S. G. Nijsure, K. A. Amin, M. Minkoff, and A. F. Wagner, Introduction to Active Thermochemical Tables: Several "Key" Enthalpies of Formation Revisited. J. Phys. Chem. A 108, 9979-9997 (2004) [DOI: 10.1021/jp047912y]
2		B. Ruscic, R. E. Pinzon, G. von Laszewski, D. Kodeboyina, A. Burcat, D. Leahy, D. Montoya, and A. F. Wagner, Active Thermochemical Tables: Thermochemistry for the 21^st Century. J. Phys. Conf. Ser. 16, 561-570 (2005) [DOI: 10.1088/1742-6596/16/1/078]
3		B. Ruscic and D. H. Bross, Active Thermochemical Tables (ATcT) values based on ver. 1.148 of the Thermochemical Network (2023); available at ATcT.anl.gov
4		T. L. Nguyen, J. Peeters, J.-F. Müller, A. Perera, D. H. Bross, B. Ruscic, and J. F. Stanton, Methanediol from Cloud-Processed Formaldehyde is Only a Minor Source of Atmospheric Formic Acid Natl. Acad. Sci. 120, e2304650120/1-8 (2023) [DOI: 10.1073/pnas.2304650120]
5		B. Ruscic, Uncertainty Quantification in Thermochemistry, Benchmarking Electronic Structure Computations, and Active Thermochemical Tables. Int. J. Quantum Chem. 114, 1097-1101 (2014) [DOI: 10.1002/qua.24605]
6		B. Ruscic and D. H. Bross, Thermochemistry Computer Aided Chem. Eng. 45, 3-114 (2019) [DOI: 10.1016/B978-0-444-64087-1.00001-2]

Formula

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

Uncertainties

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

Website Functionality Credits

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

Acknowledgement

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