ATcT [1, 2] enthalpies of formation based on version 1.122h of the Thermochemical Network [3]

Below is a list of 0 K and 298.15 K enthalpies of formation for all 1617 species included in version 1.122h.
This version of ATcT results was generated from an expansion of version 1.122e [4] to include results centered on the determination of the appearance energy of CH3+ from CH4. [5].

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.)

If you find Active Thermochemical Tables useful in your research, please cite this website as given in Ref. [3], and, if possible, the ATcT approach as given in Refs. [1] and [2].



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


Species Name Preferred Formula Image    ΔfH°(0 K)    ΔfH°(298.15 K) Uncertainty Units Relative
Molecular
Mass
ATcT ID
Dihydrogen [H][H]00exact2.01588 ±
0.00014
1333-74-0*0
Helium [He]00exact4.0026020 ±
0.0000020
7440-59-7*0
Carbon atom [C]00exact12.01070 ±
0.00080
7440-44-0*500
Dinitrogen N#N00exact28.01348 ±
0.00014
7727-37-9*0
Dioxygen O=O00exact31.99880 ±
0.00060
7782-44-7*0
Difluorine FF00exact37.9968064 ±
0.0000010
7782-41-4*0
Neon [Ne]00exact20.17970 ±
0.00060
7440-01-9*0
Dichlorine ClCl00exact70.9054 ±
0.0018
7782-50-5*0
Argon [Ar]00exact39.94800 ±
0.00100
7440-37-1*0
Dibromine BrBr00exact159.8080 ±
0.0020
7726-95-6*500
Krypton [Kr]00exact83.8000 ±
0.1000
7439-90-9*0
Diiodine II00exact253.808940 ±
0.000060
7553-56-2*500
Xenon [Xe]00exact131.2900 ±
0.0200
7440-63-3*0
Deuterium molecule [2H][2H]00exact4.02820355600 ±
0.00000000080
7782-39-0*0
Hydrogen atom [H]216.034217.998± 0.000kJ/mol1.007940 ±
0.000070
12385-13-6*0
Carbon atom [C]711.399716.885± 0.047kJ/mol12.01070 ±
0.00080
7440-44-0*0
Oxygen atom [O]246.844249.229± 0.0021kJ/mol15.99940 ±
0.00030
17778-80-2*0
Nitrogen atom [N]470.579472.442± 0.024kJ/mol14.006740 ±
0.000070
17778-88-0*0
Carbon dioxide C(=O)=O-393.108-393.474± 0.015kJ/mol44.00950 ±
0.00100
124-38-9*0
Chlorine atom [Cl]119.621121.302± 0.0011kJ/mol35.45270 ±
0.00090
22537-15-1*0
Fluorine atom [F]77.25579.361± 0.048kJ/mol18.99840320 ±
0.00000050
14762-94-8*0
Methane C-66.557-74.526± 0.055kJ/mol16.04246 ±
0.00085
74-82-8*0
Ethane CC-68.35-83.97± 0.13kJ/mol30.0690 ±
0.0017
74-84-0*0
Water O-286.302-285.830± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*500
Water O-238.932-241.836± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*0
Hydron [H+]1528.0841530.047± 0.000kJ/mol1.007391 ±
0.000070
12408-02-5*0
Ethylene C=C60.8852.36± 0.12kJ/mol28.0532 ±
0.0016
74-85-1*0
Bromine atom [Br]117.914111.851± 0.056kJ/mol79.90400 ±
0.00100
10097-32-2*0
Methanol CO-190.01-200.89± 0.15kJ/mol32.04186 ±
0.00090
67-56-1*0
Hydrogen chloride Cl-91.989-92.173± 0.0062kJ/mol36.46064 ±
0.00090
7647-01-0*0
Hydroxyl [OH]37.24837.488± 0.027kJ/mol17.00734 ±
0.00031
3352-57-6*0
Carbon monoxide [C-]#[O+]-113.803-110.523± 0.026kJ/mol28.01010 ±
0.00085
630-08-0*0
Methyl [CH3]149.872146.458± 0.059kJ/mol15.03452 ±
0.00083
2229-07-4*0
Propane CCC-82.75-105.03± 0.18kJ/mol44.0956 ±
0.0025
74-98-6*0
Formaldehyde C=O-105.379-109.218± 0.098kJ/mol30.02598 ±
0.00087
50-00-0*0
Hydrogen fluoride F-272.677-272.724± 0.049kJ/mol20.006343 ±
0.000070
7664-39-3*0
Hydrogen bromide Br-27.98-35.82± 0.14kJ/mol80.9119 ±
0.0010
10035-10-6*0
Ethanol CCO-217.30-235.02± 0.22kJ/mol46.0684 ±
0.0017
64-17-5*0
Iodine atom [I]107.157106.757± 0.0021kJ/mol126.904470 ±
0.000030
14362-44-8*0
Ethyl C[CH2]131.06119.99± 0.27kJ/mol29.0611 ±
0.0016
2025-56-1*0
Acetylene C#C228.82228.26± 0.13kJ/mol26.0373 ±
0.0016
74-86-2*0
Nitric oxide [N]=O90.61991.123± 0.065kJ/mol30.00614 ±
0.00031
10102-43-9*0
Chloromethane CCl-74.61-82.54± 0.19kJ/mol50.4872 ±
0.0012
74-87-3*0
Hydrogen cyanide C#N129.661129.276± 0.090kJ/mol27.02538 ±
0.00081
74-90-8*0
Ammonia N-38.565-45.557± 0.030kJ/mol17.03056 ±
0.00022
7664-41-7*0
Propene CC=C34.9319.93± 0.21kJ/mol42.0797 ±
0.0024
115-07-1*0
Nitrogen dioxide O=[N]=O36.85934.052± 0.065kJ/mol46.00554 ±
0.00060
10102-44-0*0
Hydroxyde [OH-]-139.093-139.060± 0.027kJ/mol17.00789 ±
0.00031
14280-30-9*0
Dioxidanyl O[O]15.1212.22± 0.15kJ/mol33.00674 ±
0.00060
3170-83-0*0
Hydrogen iodide I28.64526.470± 0.036kJ/mol127.912410 ±
0.000076
10034-85-2*0
Fluoromethane CF-227.45-235.48± 0.24kJ/mol34.03292 ±
0.00083
593-53-3*0
Acetaldehyde CC=O-155.16-165.64± 0.26kJ/mol44.0526 ±
0.0017
75-07-0*0
Hydrogen peroxide OO-129.480-135.466± 0.063kJ/mol34.01468 ±
0.00062
7722-84-1*0
Bromomethane CBr-20.88-36.28± 0.18kJ/mol94.9385 ±
0.0013
74-83-9*0
n-Butane CCCC-98.47-125.78± 0.26kJ/mol58.1222 ±
0.0033
106-97-8*0
Benzene c1ccccc1100.6283.10± 0.23kJ/mol78.1118 ±
0.0048
71-43-2*0
Methylene [CH2]428.73429.14± 0.11kJ/mol14.02658 ±
0.00081
2465-56-7*2
Hypochlorous acid OCl-73.869-76.809± 0.027kJ/mol52.46004 ±
0.00095
7790-92-3*0
Propyne CC#C192.79185.73± 0.24kJ/mol40.0639 ±
0.0024
74-99-7*0
Formic acid C(=O)O-371.10-378.42± 0.22kJ/mol46.0254 ±
0.0010
64-18-6*1
Dibromine BrBr45.6730.88± 0.11kJ/mol159.8080 ±
0.0020
7726-95-6*0
Methylene [CH2]391.068391.625± 0.098kJ/mol14.02658 ±
0.00081
2465-56-7*1
Fluoride [F-]-250.910-249.125± 0.048kJ/mol18.99895178 ±
0.00000050
16984-48-8*0
Ketene C=C=O-45.34-48.46± 0.12kJ/mol42.0367 ±
0.0016
463-51-4*0
Tetrachloromethane C(Cl)(Cl)(Cl)Cl-93.48-95.65± 0.44kJ/mol153.8215 ±
0.0037
56-23-5*0
Chloroethane CCCl-96.89-111.48± 0.26kJ/mol64.5138 ±
0.0019
75-00-3*0
Tetrafluoromethane C(F)(F)(F)F-927.45-933.42± 0.25kJ/mol88.00431 ±
0.00080
75-73-0*0
Methylidyne [CH]592.825596.159± 0.099kJ/mol13.01864 ±
0.00080
3315-37-5*0
Diiodine II65.49762.417± 0.0041kJ/mol253.808940 ±
0.000060
7553-56-2*0
Toluene c1ccc(cc1)C73.2950.01± 0.34kJ/mol92.1384 ±
0.0056
108-88-3*0
Fluoroform C(F)(F)F-688.92-695.87± 0.43kJ/mol70.01385 ±
0.00080
75-46-7*0
Ozone O=[O+][O-]144.397141.734± 0.039kJ/mol47.99820 ±
0.00090
10028-15-6*0
Trifluoromethyl [C](F)(F)F-465.08-467.88± 0.49kJ/mol69.00591 ±
0.00080
2264-21-3*0
Ethylium [CH2+]1[CH2][H]1914.83902.76± 0.31kJ/mol29.0606 ±
0.0016
14936-94-8*0
Acetone CC(=O)C-200.21-216.90± 0.38kJ/mol58.0791 ±
0.0025
67-64-1*0
Phenol c1ccc(cc1)O-74.66-93.26± 0.64kJ/mol94.1112 ±
0.0048
108-95-2*0
Oxonium [OH3+]605.83599.08± 0.17kJ/mol19.02267 ±
0.00037
13968-08-6*0
Chloride [Cl-]-228.953-227.346± 0.0021kJ/mol35.45325 ±
0.00090
16887-00-6*0
Bromide [Br-]-206.623-212.686± 0.056kJ/mol79.90455 ±
0.00100
24959-67-9*0
Hypobromous acid OBr-51.63-62.11± 0.47kJ/mol96.9113 ±
0.0010
13517-11-8*0
Vinyl C=[CH]301.13296.93± 0.34kJ/mol27.0452 ±
0.0016
2669-89-8*0
Methoxy C[O]28.8521.48± 0.29kJ/mol31.03392 ±
0.00088
2143-68-2*0
Acetic acid CC(=O)O-418.88-433.01± 0.43kJ/mol60.0520 ±
0.0017
64-19-7*1
Chlorooxidanyl Cl=O101.125101.716± 0.035kJ/mol51.45210 ±
0.00095
14989-30-1*0
Methylamine CN-7.02-21.73± 0.31kJ/mol31.05714 ±
0.00088
74-89-5*0
Methoxide C[O-]-122.63-130.35± 0.30kJ/mol31.03447 ±
0.00088
3315-60-4*0
Hydroxymethyl [CH2]O-10.46-16.77± 0.28kJ/mol31.03392 ±
0.00088
2597-43-5*0
Oxomethylium [CH+]=O827.772827.188± 0.098kJ/mol29.01749 ±
0.00086
17030-74-9*0
Allene C=C=C197.34189.86± 0.25kJ/mol40.0639 ±
0.0024
463-49-0*0
1,3-Butadiene C=CC=C125.31110.83± 0.37kJ/mol54.0904 ±
0.0032
106-99-0*0
Imidogen [NH]358.75358.79± 0.17kJ/mol15.014680 ±
0.000099
13774-92-0*0
Nitrilomethyl [C]#N436.73440.01± 0.15kJ/mol26.01744 ±
0.00080
2074-87-5*0
Dioxymethyl [O-]\[O+]=C111.88104.87± 0.63kJ/mol46.0254 ±
0.0010
56077-92-0*0
Difluorophosgene C(F)(F)=O-603.38-606.48± 0.41kJ/mol66.00691 ±
0.00085
353-50-4*0
Phenyl c1cccc[c]1350.24336.88± 0.54kJ/mol77.1039 ±
0.0048
2396-01-2*0
Nitric acid O[N+](=O)[O-]-124.50-134.21± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*0
Formyl [CH]=O41.39641.773± 0.098kJ/mol29.01804 ±
0.00086
2597-44-6*0
Allyl C=C[CH2]180.03168.31± 0.45kJ/mol41.0718 ±
0.0024
1981-80-2*0
Iodide [I-]-187.995-188.396± 0.0021kJ/mol126.905019 ±
0.000030
20461-54-5*0
Cyanogen chloride ClC#N134.94135.64± 0.46kJ/mol61.4701 ±
0.0012
506-77-4*0
iso-Butane CC(C)C-106.04-134.64± 0.31kJ/mol58.1222 ±
0.0033
75-28-5*0
Methylium [CH3+]1099.3401095.396± 0.056kJ/mol15.03397 ±
0.00083
14531-53-4*0
Hypofluorous acid OF-84.39-87.29± 0.19kJ/mol36.00574 ±
0.00031
14034-79-8*0
Hydrogen chloride Cl-166.452± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*834
Propargyl [CH2]C#C353.97351.38± 0.37kJ/mol39.0559 ±
0.0024
2932-78-7*0
Dichloromethane C(Cl)Cl-87.13-93.99± 0.50kJ/mol84.9320 ±
0.0020
75-09-2*0
Vinyl chloride C=CCl29.2621.67± 0.30kJ/mol62.4979 ±
0.0018
75-01-4*0
Cyanogen bromide BrC#N186.7180.2± 1.1kJ/mol105.9214 ±
0.0013
506-68-3*0
Iodomethane CI24.5014.97± 0.18kJ/mol141.93899 ±
0.00083
74-88-4*0
Trihydrogen cation [H]1[H+][H]11110.3041106.696± 0.013kJ/mol3.02327 ±
0.00021
28132-48-1*0
Oxygen atom anion [O-]105.868108.097± 0.0021kJ/mol15.99995 ±
0.00030
14337-01-0*0
Ethoxide CC[O-]-163.65-178.59± 0.49kJ/mol45.0610 ±
0.0017
16331-64-9*0
Amidogen [NH2]188.92186.03± 0.11kJ/mol16.02262 ±
0.00016
13770-40-6*0
n-Propyl CC[CH2]118.34100.94± 0.55kJ/mol43.0877 ±
0.0024
2143-61-5*0
iso-Propyl C[CH]C105.3288.45± 0.53kJ/mol43.0877 ±
0.0024
2025-55-0*0
2-Hydroxyethyl [CH2]CO-13.06-26.32± 0.61kJ/mol45.0605 ±
0.0017
4422-54-2*1
Tetrabromomethane C(Br)(Br)(Br)Br132.9103.2± 1.3kJ/mol331.6267 ±
0.0041
558-13-4*0
Difluoromethane C(F)F-443.02-450.63± 0.35kJ/mol52.02339 ±
0.00081
75-10-5*0
Oxygen difluoride FOF26.8124.56± 0.24kJ/mol53.99621 ±
0.00030
7783-41-7*0
Hypochlorite [Cl-]=O-118.60-118.33± 0.13kJ/mol51.45265 ±
0.00095
14380-61-1*0
Methyl hydroperoxide COO-115.11-127.93± 0.72kJ/mol48.0413 ±
0.0010
3031-73-0*0
Methylperoxy CO[O]22.2312.59± 0.48kJ/mol47.0333 ±
0.0010
2143-58-0*0
Propynylidene [CH]=C=[CH]543.41546.40± 0.64kJ/mol38.0480 ±
0.0024
67152-18-5*1
Ethenol C=CO-112.73-123.93± 0.66kJ/mol44.0526 ±
0.0017
557-75-5*1
Chloroform C(Cl)(Cl)Cl-97.50-102.41± 0.52kJ/mol119.3767 ±
0.0028
67-66-3*0
Oxygen atom cation [O+]1560.7861562.644± 0.0021kJ/mol15.99885 ±
0.00030
14581-93-2*0
1,2-Propadiene-1,3-diylidene [C]=C=[C]814.67823.62± 0.55kJ/mol36.0321 ±
0.0024
12075-35-3*0
Acetonitrile CC#N81.1174.06± 0.26kJ/mol41.0520 ±
0.0016
75-05-8*0
Cyanic fluoride FC#N8.799.12± 0.71kJ/mol45.01584 ±
0.00080
1495-50-7*0
1-Hydroxyethyl C[CH]O-42.28-55.71± 0.65kJ/mol45.0605 ±
0.0017
2348-46-1*1
Hydroxyformyl O[C]=O-181.20-184.17± 0.50kJ/mol45.0174 ±
0.0010
2564-86-5*1
Formate C(=O)[O-]-463.16-466.80± 0.56kJ/mol45.0180 ±
0.0010
71-47-6*0
Methyl formate COC=O-346.78-359.83± 0.87kJ/mol60.0520 ±
0.0017
107-31-3*1
Tetrafluoroethylene C(=C(F)F)(F)F-671.20-674.60± 0.55kJ/mol100.0150 ±
0.0016
116-14-3*0
Fluoromethylidyne [C]F243.15246.75± 0.13kJ/mol31.00910 ±
0.00080
3889-75-6*0
Ethyl bromide CCBr-41.40-63.35± 0.25kJ/mol108.9651 ±
0.0019
74-96-4*0
Vinyl bromide C=CBr88.5673.76± 0.58kJ/mol106.9492 ±
0.0019
593-60-2*0
Chlorine fluoride ClF-55.620-55.715± 0.055kJ/mol54.45110 ±
0.00090
7790-89-8*0
Diazynium N#[NH+]1042.541038.93± 0.68kJ/mol29.02087 ±
0.00016
12357-66-3*0
Methanimine C=N96.2588.34± 0.62kJ/mol29.04126 ±
0.00083
2053-29-4*0
Nitrite O=[N-]=O-182.63-185.44± 0.46kJ/mol46.00609 ±
0.00060
14797-65-0*0
Hydroxylamine NO-33.23-43.61± 0.46kJ/mol33.02996 ±
0.00037
7803-49-8*1
Nitrosyl hydride N=O109.93106.96± 0.11kJ/mol31.01408 ±
0.00032
14332-28-6*0
Nitrous acid N(=O)O-73.005-79.149± 0.079kJ/mol47.01348 ±
0.00061
7782-77-6*1
Ethynylene [C]=[C]820.28828.75± 0.26kJ/mol24.0214 ±
0.0016
12070-15-4*0
Hydride [H-]143.264145.228± 0.000kJ/mol1.008489 ±
0.000070
12184-88-2*0
n-Butyl CCC[CH2]102.7480.23± 0.70kJ/mol57.1143 ±
0.0033
2492-36-6*0
Cyclopentadiene C1C=CC=C1150.83133.71± 0.66kJ/mol66.1011 ±
0.0040
542-92-7*0
Methoxymethane COC-166.38-183.89± 0.41kJ/mol46.0684 ±
0.0017
115-10-6*0
Isocyanic acid N=C=O-115.85-118.84± 0.31kJ/mol43.02478 ±
0.00086
75-13-8*0
Methyl acetate CC(=O)OC-394.28-413.15± 0.61kJ/mol74.0785 ±
0.0025
79-20-9*1
Phosgene C(=O)(Cl)Cl-217.45-219.14± 0.27kJ/mol98.9155 ±
0.0020
75-44-5*0
Phenylium c1cccc[c+]11148.461135.68± 0.87kJ/mol77.1034 ±
0.0048
17333-73-2*0
Fluorooxidanyl [O]F110.27110.89± 0.15kJ/mol34.99780 ±
0.00030
12061-70-0*0
Hypoiodous acid OI-54.2-58.9± 3.1kJ/mol143.91181 ±
0.00031
14332-21-9*0
Methanium [CH5+]921.95911.70± 0.45kJ/mol17.04985 ±
0.00087
15135-49-6*0
Oxirane C1OC1-40.06-52.60± 0.38kJ/mol44.0526 ±
0.0017
75-21-8*0
Ethynide C#[C-]277.41280.82± 0.18kJ/mol25.0299 ±
0.0016
29075-95-4*0
cis-2-Butene C/C=C\C14.19-7.08± 0.41kJ/mol56.1063 ±
0.0032
590-18-1*0
Formic acid C(=O)O-354.76-361.86± 0.38kJ/mol46.0254 ±
0.0010
64-18-6*2
Methanetetraylbisamidogen [N]=C=[N]450.42450.83± 0.64kJ/mol40.02418 ±
0.00081
2669-76-3*0
Fluoroethane CCF-257.23-272.09± 0.36kJ/mol48.0595 ±
0.0016
353-36-6*0
Chlorotrifluoromethane C(F)(F)(F)Cl-704.86-709.97± 0.71kJ/mol104.4586 ±
0.0012
75-72-9*0
Bromotrifluoromethane C(F)(F)(F)Br-639.16-651.28± 0.47kJ/mol148.9099 ±
0.0013
75-63-8*0
Fluorobenzene c1ccc(cc1)F-99.08-114.76± 0.89kJ/mol96.1023 ±
0.0048
462-06-6*0
Nitromethane C[N+](=O)[O-]-60.84-74.74± 0.46kJ/mol61.0401 ±
0.0010
75-52-5*0
Chlorine dioxide O=Cl=O101.3398.86± 0.27kJ/mol67.4515 ±
0.0011
10049-04-4*0
Dioxygen cation O=[O+]1164.5851165.221± 0.0092kJ/mol31.99825 ±
0.00060
12185-07-8*0
Methylidyne [CH]664.55667.89± 0.59kJ/mol13.01864 ±
0.00080
3315-37-5*2
Ethanide C[CH2-]155.31144.23± 0.89kJ/mol29.0616 ±
0.0016
25013-41-6*0
Ethynyl C#[C]563.86567.98± 0.14kJ/mol25.0293 ±
0.0016
2122-48-7*0
Aminomethyl [CH2]N158.91149.07± 0.44kJ/mol30.04920 ±
0.00085
10507-29-6*0
Peroxyformic acid C(=O)OO-279.35-288.69± 0.90kJ/mol62.0248 ±
0.0012
107-32-4*1
Cyclopropane C1CC170.9853.85± 0.41kJ/mol42.0797 ±
0.0024
75-19-4*0
Propadienylidene C=C=[C]554.41555.55± 0.41kJ/mol38.0480 ±
0.0024
60731-10-4*0
Ethoxy CC[O]1.48-12.42± 0.48kJ/mol45.0605 ±
0.0017
2154-50-9*51
Acetyl C[C]=O-3.34-10.00± 0.35kJ/mol43.0446 ±
0.0016
3170-69-2*0
Cyanooxidanyl N#C[O]127.02127.49± 0.35kJ/mol42.01684 ±
0.00086
22400-26-6*0
Phenolate c1ccc(cc1)[O-]-146.35-161.82± 0.88kJ/mol93.1038 ±
0.0048
3229-70-7*0
Dimethylamine CNC3.54-18.10± 0.48kJ/mol45.0837 ±
0.0017
124-40-3*0
Bromoform C(Br)(Br)Br74.748.5± 1.3kJ/mol252.7306 ±
0.0031
75-25-2*0
Cyclopentadienyl [CH]1C=CC=C1274.42261.31± 0.93kJ/mol65.0932 ±
0.0040
2143-53-5*0
Bromooxidanyl Br[O]131.14123.60± 0.28kJ/mol95.9034 ±
0.0010
15656-19-6*0
Fluorodioxidanyl FO[O]26.8025.09± 0.26kJ/mol50.99720 ±
0.00060
15499-23-7*0
Hypobromite Br[O-]-96.15-103.63± 0.53kJ/mol95.9039 ±
0.0010
14380-62-2*0
Peroxynitrous acid OON=O-5.81-14.25± 0.36kJ/mol63.01288 ±
0.00091
14691-52-2*3
Cyanide [C-]#N63.95667.242± 0.094kJ/mol26.01799 ±
0.00080
57-12-5*0
Isobutene CC(=C)C4.01-17.05± 0.42kJ/mol56.1063 ±
0.0032
115-11-7*0
1-Butene CCC=C21.000.05± 0.38kJ/mol56.1063 ±
0.0032
106-98-9*0
n-Pentane CCCCC-114.41-146.28± 0.31kJ/mol72.1488 ±
0.0041
109-66-0*0
Dichloromethylene [C](Cl)Cl229.49230.67± 0.64kJ/mol82.9161 ±
0.0020
1605-72-7*2
Hydrogen fluoride F-334.49± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*800
Vinyl fluoride C=CF-134.54-142.35± 0.46kJ/mol46.0436 ±
0.0016
75-02-5*0
Chlorobenzene c1ccc(cc1)Cl67.1452.18± 0.61kJ/mol112.5566 ±
0.0049
108-90-7*0
Difluorodioxidane FOOF35.2731.54± 0.41kJ/mol69.99561 ±
0.00060
7783-44-0*0
Water O-285.830± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*590
Nitrous oxide [N-]=[N+]=O85.99782.567± 0.097kJ/mol44.01288 ±
0.00033
10024-97-2*0
(E)-Diazene [H]/N=N/[H]207.10199.95± 0.44kJ/mol30.02936 ±
0.00020
15626-43-4*0
Hydroxyoxomethylium O[C+]=O600.65597.57± 0.44kJ/mol45.0169 ±
0.0010
638-71-1*0
Ethylidene [CH]C361.35354.35± 0.76kJ/mol28.0532 ±
0.0016
4218-50-2*1
Vinylium [CH+]1[CH][H]11118.941115.50± 0.57kJ/mol27.0447 ±
0.0016
14604-48-9*0
Hydroxymethylium [CH2+]O717.70709.76± 0.18kJ/mol31.03337 ±
0.00088
18682-95-6*0
Cyanogen N#CC#N308.31310.25± 0.43kJ/mol52.0349 ±
0.0016
460-19-5*0
Peroxyformyl C(=O)O[O]-100.46-105.76± 0.93kJ/mol61.0168 ±
0.0012
56240-83-6*1
Dioxidanide O[O-]-88.87-91.53± 0.34kJ/mol33.00729 ±
0.00060
14691-59-9*0
Cyclopropene C1C=C1292.33283.60± 0.53kJ/mol40.0639 ±
0.0024
2781-85-3*0
n-Hexane CCCCCC-130.05-166.92± 0.34kJ/mol86.1754 ±
0.0049
110-54-3*0
Trioxidane OOO-82.04-90.88± 0.70kJ/mol50.01408 ±
0.00091
14699-99-1*1
Formic acid C(=O)O-371.10-378.40± 0.22kJ/mol46.0254 ±
0.0010
64-18-6*0
Methyl formate COC=O-326.7-339.2± 1.2kJ/mol60.0520 ±
0.0017
107-31-3*2
Trichloromethyl [C](Cl)(Cl)Cl71.9571.48± 0.84kJ/mol118.3688 ±
0.0028
3170-80-7*0
1,1-Dichloroethane CC(Cl)Cl-120.33-133.11± 0.44kJ/mol98.9586 ±
0.0024
75-34-3*0
Bromobenzene c1ccc(cc1)Br126.6104.6± 1.3kJ/mol157.0079 ±
0.0049
108-86-1*0
Benzaldehyde c1ccc(cc1)C=O-19.40-37.19± 0.92kJ/mol106.1219 ±
0.0056
100-52-7*0
Chlorous acid OCl=O25.7320.68± 0.63kJ/mol68.4594 ±
0.0011
13898-47-0*0
Iodooxidanyl I[O]126.97125.04± 0.82kJ/mol142.90387 ±
0.00030
14696-98-1*0
Carbon monoxide cation [C]#[O+]1238.3061241.586± 0.026kJ/mol28.00955 ±
0.00085
12144-04-6*0
Ammonium [NH4+]643.03631.72± 0.21kJ/mol18.03795 ±
0.00029
14798-03-9*0
Azanide [NH2-]114.78111.91± 0.30kJ/mol16.02317 ±
0.00016
17655-31-1*0
Aminooxy N[O]70.9364.33± 0.76kJ/mol32.02202 ±
0.00034
13408-29-2*0
Hydroxyamidogen [NH]O101.594.7± 1.1kJ/mol32.02202 ±
0.00034
13940-32-4*1
Nitrate O=[N+]([O-])[O-]-300.17-306.64± 0.60kJ/mol62.00549 ±
0.00090
14797-55-8*0
Hypofluorite [O-]F-108.85-108.68± 0.48kJ/mol34.99835 ±
0.00030
12763-66-5*0
Cyanogen iodide IC#N222.7222.2± 1.6kJ/mol152.92191 ±
0.00080
506-78-5*0
Formyl anion [CH-]=O11.6011.98± 0.44kJ/mol29.01859 ±
0.00086
57340-31-5*0
2-Propynylidyne C#C[C]717.99722.34± 0.82kJ/mol37.0400 ±
0.0024
53590-28-6*0
Cyclopentane C1CCCC1-43.97-76.53± 0.41kJ/mol70.1329 ±
0.0041
287-92-3*0
Ethoxy CC[O]5.74-8.69± 0.48kJ/mol45.0605 ±
0.0017
2154-50-9*52
Chloromethylene [CH]Cl320.26320.55± 0.89kJ/mol48.4713 ±
0.0012
2108-20-5*2
Dibromomethane C(Br)Br25.23.8± 1.1kJ/mol173.8346 ±
0.0022
74-95-3*0
Trifluoromethylium [C+](F)(F)F409.29406.08± 0.48kJ/mol69.00536 ±
0.00080
18851-76-8*0
Phenide c1cccc[c-]1244.37230.95± 0.39kJ/mol77.1044 ±
0.0048
30922-78-2*0
3-Buten-2-one CC(=O)C=C-95.65-111.90± 0.88kJ/mol70.0898 ±
0.0032
78-94-4*1
Chloronium [H][ClH+]881.3878.2± 1.1kJ/mol37.46803 ±
0.00091
36658-55-6*0
Chlorine trifluoride FCl(F)F-158.6-162.7± 1.2kJ/mol92.44791 ±
0.00090
7790-91-2*0
Iodine monochloride ICl19.02417.391± 0.013kJ/mol162.35717 ±
0.00090
7790-99-0*0
Iodotrifluoromethane C(F)(F)(F)I-583.71-589.59± 0.51kJ/mol195.91038 ±
0.00080
2314-97-8*0
Nitrogen atom cation [N+]1872.9071875.689± 0.024kJ/mol14.006191 ±
0.000070
14158-23-7*0
Azido radical [N]N=[N]452.22449.63± 0.60kJ/mol42.02022 ±
0.00021
12596-60-0*0
Trinitrogen cation [N]N=[N+]1519.391516.76± 0.89kJ/mol42.01967 ±
0.00021
12185-03-4*0
Oxonitrate anion N#[O-]88.0988.13± 0.25kJ/mol30.00669 ±
0.00031
14967-78-3*0
Nitrosyl ion N#[O+]984.487984.482± 0.065kJ/mol30.00559 ±
0.00031
14452-93-8*0
Nitrogen sesquioxide O=N-[N](=O)[O]90.7286.15± 0.15kJ/mol76.01168 ±
0.00091
10544-73-7*0
Hydrazoic acid N=[N+]=[N-]297.86291.56± 0.49kJ/mol43.02816 ±
0.00022
7782-79-8*0
Methylene anion [CH2-]328.17328.60± 0.19kJ/mol14.02713 ±
0.00081
50928-07-9*0
Ethanium [CH3+][H][CH3]874.34858.07± 0.62kJ/mol31.0764 ±
0.0017
24669-33-8*1
Acetylium C[C+]=O666.41659.13± 0.46kJ/mol43.0441 ±
0.0016
15762-07-9*0
Hydroxymethylene [CH]O112.67108.90± 0.28kJ/mol30.02598 ±
0.00087
19710-56-6*1
Carbonic acid OC(=O)O-602.76-612.93± 0.75kJ/mol62.0248 ±
0.0012
463-79-6*1
Peroxyformate C(=O)O[O-]-341.00-346.45± 0.96kJ/mol61.0174 ±
0.0012
104960-05-6*1
Isoprene CC(=C)C=C96.0975.57± 0.67kJ/mol68.1170 ±
0.0040
78-79-5*0
Hydrogen bromide Br-120.96± 0.15kJ/mol80.9119 ±
0.0010
10035-10-6*800
1-Hydroxyethylium C[CH+]O608.78594.35± 0.40kJ/mol45.0600 ±
0.0017
18682-96-7*1
Dicarbon monoxide [C]=C=O377.29381.33± 0.98kJ/mol40.0208 ±
0.0016
12071-23-7*1
Formyloxidanyl C(=O)[O]-125.82-127.48± 0.56kJ/mol45.0174 ±
0.0010
16499-21-1*1
Trimethylamine CN(C)C1.16-27.70± 0.92kJ/mol59.1103 ±
0.0025
75-50-3*0
1,1,1-Trichloroethane CC(Cl)(Cl)Cl-134.34-144.92± 0.48kJ/mol133.4033 ±
0.0031
71-55-6*0
Tetrachloroethene C(=C(Cl)Cl)(Cl)Cl-22.4-23.3± 1.1kJ/mol165.8322 ±
0.0039
127-18-4*0
Chlorodifluoromethane C(F)(F)Cl-476.4-482.5± 1.2kJ/mol86.4681 ±
0.0012
75-45-6*0
Fluoromethylene [CH]F148.38148.66± 0.43kJ/mol32.01704 ±
0.00080
13453-52-6*2
Fluoroformyl F[C]=O-176.63-176.05± 0.37kJ/mol47.00850 ±
0.00085
1871-24-5*0
2-Bromoethanol BrCCO-196.48-220.55± 0.55kJ/mol124.9645 ±
0.0019
540-51-2*0
Propionaldehyde CCC=O-171.39-186.79± 0.25kJ/mol58.0791 ±
0.0025
123-38-6*0
Bromonium [H][BrH+]925.0914.2± 1.5kJ/mol81.9193 ±
0.0010
36658-54-5*0
Hydrazine NN111.5797.41± 0.49kJ/mol32.04524 ±
0.00031
302-01-2*0
Trioxidanide OO[O-]-120.0-123.1± 1.6kJ/mol49.00669 ±
0.00090
89965-38-8*2
Hydrogen chloride Cl-166.991± 0.023kJ/mol36.46064 ±
0.00090
7647-01-0*800
Methanide [CH3-]141.08137.64± 0.25kJ/mol15.03507 ±
0.00083
15194-58-8*0
Methyliumyl [CH2+]1393.201394.06± 0.11kJ/mol14.02603 ±
0.00081
15091-72-2*0
Ethylidene [CH]C373.80366.57± 0.87kJ/mol28.0532 ±
0.0016
4218-50-2*2
Vinyl anion C=[CH-]236.91232.49± 0.86kJ/mol27.0458 ±
0.0016
25012-81-1*0
Ethylidyne [C]C640.7636.1± 1.1kJ/mol27.0452 ±
0.0016
67624-57-1*2
Aminomethylium [CH2+]N763.54751.57± 0.66kJ/mol30.04865 ±
0.00085
488821-23-4*0
2-Butyne CC#CC159.35146.38± 0.58kJ/mol54.0904 ±
0.0032
503-17-3*0
1-Methylethenyl C[C]=C262.98252.58± 0.77kJ/mol41.0718 ±
0.0024
15552-77-9*0
trans-2-Butene C/C=C/C9.38-11.18± 0.41kJ/mol56.1063 ±
0.0032
624-64-6*0
iso-Pentane CCC(C)C-119.17-153.22± 0.43kJ/mol72.1488 ±
0.0041
78-78-4*0
1-Hydroxyethyl C[CH]O-40.73-54.20± 0.93kJ/mol45.0605 ±
0.0017
2348-46-1*2
Protonated oxirane [OH+]1CC1725.29709.12± 0.66kJ/mol45.0600 ±
0.0017
*38607-31-7*0
Ketenyl [CH]=C=O177.13178.23± 0.59kJ/mol41.0287 ±
0.0016
51095-15-9*0
Methanediol C(O)O-379.38-393.58± 0.93kJ/mol48.0413 ±
0.0010
463-57-0*1
Methoxyethane CCOC-194.08-216.97± 0.48kJ/mol60.0950 ±
0.0025
540-67-0*0
Acetic acid CC(=O)O-397.89-411.66± 0.84kJ/mol60.0520 ±
0.0017
64-19-7*2
Acetyl chloride CC(=O)Cl-232.61-241.60± 0.33kJ/mol78.4973 ±
0.0019
75-36-5*0
Chlorohydroxymethyl [CH](Cl)O-54.9-60.9± 1.1kJ/mol65.4787 ±
0.0012
147139-06-8*1
1,1-Dichloroethene C=C(Cl)Cl8.922.93± 0.49kJ/mol96.9427 ±
0.0024
75-35-4*0
Dichlorodifluoromethane C(F)(F)(Cl)Cl-490.38-495.15± 0.97kJ/mol120.9129 ±
0.0020
75-71-8*0
Fluorodichloromethane C(F)(Cl)Cl-278.7-284.0± 1.3kJ/mol102.9224 ±
0.0020
75-43-4*0
Difluoromethylene [C](F)F-193.93-193.46± 0.38kJ/mol50.00751 ±
0.00080
2154-59-8*2
Fluoromethylene [CH]F210.35210.69± 0.66kJ/mol32.01704 ±
0.00080
13453-52-6*1
Hydrogen peroxide cation O[OH+]897.75890.77± 0.37kJ/mol34.01413 ±
0.00062
12325-10-9*1
Formyl fluoride FC=O-378.65-382.24± 0.31kJ/mol48.01644 ±
0.00086
1493-02-3*0
Benzyl c1ccc(cc1)[CH2]229.92211.10± 0.60kJ/mol91.1305 ±
0.0056
2154-56-5*0
Methyl nitrite CON=O-55.62-67.40± 0.45kJ/mol61.0401 ±
0.0010
624-91-9*2
Chloro hypochlorite ClOCl79.7877.97± 0.36kJ/mol86.9048 ±
0.0018
7791-21-1*0
Chlorooxy hypochlorite ClOOCl134.56131.32± 0.56kJ/mol102.9042 ±
0.0019
12292-23-8*0
Peroxyhypochlorous acid OOCl3.94-1.33± 0.95kJ/mol68.4594 ±
0.0011
67952-07-2*0
Chlorine atom cation [Cl+]1370.8061372.602± 0.0011kJ/mol35.45215 ±
0.00090
24203-47-2*0
Hypoiodite I[O-]-102.48-104.29± 0.88kJ/mol142.90442 ±
0.00030
15065-65-3*0
Dinitrogen cation N#[N+]1503.3111503.312± 0.000kJ/mol28.01293 ±
0.00014
13966-04-6*0
Carbon dioxide cation [C+](=O)=O936.092936.927± 0.017kJ/mol44.00895 ±
0.00100
12181-61-2*0
Ammonium [NH4+]-133.075± 0.056kJ/mol18.03795 ±
0.00029
14798-03-9*800
Hydrazino N[NH]234.81224.29± 0.78kJ/mol31.03730 ±
0.00025
13598-46-4*0
Methylidyne anion [CH-]475.75479.07± 0.22kJ/mol13.01919 ±
0.00080
28604-54-8*0
Dichloride Cl[Cl-]-229.8-228.7± 1.4kJ/mol70.9059 ±
0.0018
12595-89-0*0
Methylamidogen C[NH]187.20176.55± 0.49kJ/mol30.04920 ±
0.00085
15622-51-2*0
Hydrogen isocyanide cation [C+]=N1352.91352.9± 1.3kJ/mol27.02483 ±
0.00081
74158-11-5*0
Chlorine pentafluoride FCl(F)(F)(F)F-226.1-234.2± 1.7kJ/mol130.44472 ±
0.00090
13637-63-3*0
iso-Propylium C[CH+]C822.91805.83± 0.25kJ/mol43.0871 ±
0.0024
19252-53-0*0
n-Propylide CC[CH2-]122.9105.2± 1.2kJ/mol43.0882 ±
0.0024
59513-13-2*0
1,2-Propadienyl anion C=C=[CH-]265.67262.61± 0.71kJ/mol39.0565 ±
0.0024
64066-06-4*0
Propargylenide C#C[CH-]434.4436.9± 1.1kJ/mol38.0485 ±
0.0024
82906-05-6*1
t-Butyl C[C](C)C75.6050.30± 0.66kJ/mol57.1143 ±
0.0033
1605-73-8*0
neo-Pentane CC(C)(C)C-134.63-167.51± 0.40kJ/mol72.1488 ±
0.0041
463-82-1*0
2-Hydroxyethyl [CH2]CO-10.23-22.86± 0.91kJ/mol45.0605 ±
0.0017
4422-54-2*2
Ketene C=C=O182.3177.3± 1.2kJ/mol42.0367 ±
0.0016
463-51-4*1
Methanediol C(O)O-369.08-382.23± 0.96kJ/mol48.0413 ±
0.0010
463-57-0*2
Methoxyethene C=COC-88.9-106.8± 1.1kJ/mol58.0791 ±
0.0025
107-25-5*2
Methyl acetate CC(=O)OC-363.4-382.2± 1.2kJ/mol74.0785 ±
0.0025
79-20-9*2
(Methylamino)methyl CN[CH2]167.57151.12± 0.97kJ/mol44.0758 ±
0.0017
31277-24-4*0
Dimethylamidogen C[N]C173.7156.4± 1.5kJ/mol44.0758 ±
0.0017
15337-44-7*0
Cyanoamidogen [NH]C#N323.9321.4± 1.4kJ/mol41.03212 ±
0.00082
12347-01-2*0
Bromotrichloromethane C(Cl)(Cl)(Cl)Br-32.71-41.86± 0.60kJ/mol198.2728 ±
0.0030
75-62-7*0
Hydroperoxonium [OH2+]O738.1727.8± 1.2kJ/mol35.02207 ±
0.00064
70850-26-9*1
Chloromethylidyne [C]Cl430.42434.17± 0.67kJ/mol47.4634 ±
0.0012
3889-76-7*0
Chloromethanol ClCO-232.3-242.6± 1.2kJ/mol66.4866 ±
0.0013
15454-33-8*0
Chloromethoxy C(Cl)[O]-12.0-18.9± 1.1kJ/mol65.4787 ±
0.0012
114282-89-2*0
Tetraiodomethane C(I)(I)(I)I332.0326.9± 4.1kJ/mol519.62858 ±
0.00081
507-25-5*0
2-Chloroethanol ClCCO-249.86-266.57± 0.59kJ/mol80.5132 ±
0.0019
107-07-3*0
Carbon suboxide O=C=C=C=O-94.9-92.8± 1.2kJ/mol68.0309 ±
0.0025
504-64-3*0
o-Benzyne C1=CC#CC=C1468.03459.11± 0.88kJ/mol76.0960 ±
0.0048
462-80-6*2
Tropyl [CH]1C=CC=CC=C1295.6278.2± 1.1kJ/mol91.1305 ±
0.0056
3551-27-7*0
Acetonyl CC(=O)[CH2]-19.12-31.83± 0.98kJ/mol57.0712 ±
0.0024
3122-07-4*0
Bromanylium [Br+]1257.7741251.711± 0.056kJ/mol79.90345 ±
0.00100
22541-56-6*0
Water dimer O.O-491.085-499.125± 0.052kJ/mol36.03056 ±
0.00066
25655-83-8*0
Fluoronium [H][F+][H]774.10771.16± 0.88kJ/mol21.01373 ±
0.00014
12206-67-6*2
Dioxodiazoxane O=NON=O93.087.9± 1.3kJ/mol76.01168 ±
0.00091
122413-35-8*1
Nitric acid O[N+](=O)[O-]-206.64± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*800
Oxoammoniumyl [NH+]=O1092.461089.53± 0.67kJ/mol31.01353 ±
0.00032
63559-87-5*0
Peroxynitrous acid OON=O7.770.69± 0.41kJ/mol63.01288 ±
0.00091
14691-52-2*1
Carbon atom anion [C-]589.623594.769± 0.048kJ/mol12.01125 ±
0.00080
14337-00-9*0
2-Hydrotrioxy [O][OH][O]299.6293.9± 1.2kJ/mol49.00614 ±
0.00090
*12500-78-6*0
Hydrogen fluoride F-321.03± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*818
Difluoride F[F-]-291.0-290.2± 1.5kJ/mol37.9973550 ±
0.0000010
12184-85-9*0
Ethylidyne [C]C508.53504.83± 0.80kJ/mol27.0452 ±
0.0016
67624-57-1*0
Methylamidogen anion C[NH-]144.88134.06± 0.67kJ/mol30.04975 ±
0.00085
54448-39-4*0
Iminomethyl cation [NH+]#C953.3949.3± 1.4kJ/mol28.03277 ±
0.00082
196216-36-1*0
Chloroacetylene C#CCl228.14229.00± 0.72kJ/mol60.4820 ±
0.0018
593-63-5*0
Cyanomethyl [CH2]C#N263.2260.3± 1.1kJ/mol40.0440 ±
0.0016
2932-82-3*0
Fluoroacetylene C#CF104.93105.64± 0.41kJ/mol44.0277 ±
0.0016
2713-09-9*0
Methylperoxy anion CO[O-]-89.94-100.09± 0.65kJ/mol47.0339 ±
0.0010
35683-44-4*0
1-Propenyl CC=[CH]278.22267.38± 0.78kJ/mol41.0718 ±
0.0024
6067-68-1*2
Propylidyne CC[C]492.4482.8± 1.2kJ/mol41.0718 ±
0.0024
85056-54-8*1
Propargylenide C#C[CH-]436.9439.4± 1.1kJ/mol38.0485 ±
0.0024
82906-05-6*2
2-Propyn-1-ylium-1-ylidene C#C[C+]1598.11602.5± 1.3kJ/mol37.0395 ±
0.0024
75104-46-0*0
1-Butyne CCC#C179.42165.84± 0.67kJ/mol54.0904 ±
0.0032
107-00-6*0
Oxoethanide C[C-]=O-44.0-49.6± 1.3kJ/mol43.0452 ±
0.0016
78944-68-0*0
Oxirene C1=CO1272.91270.76± 0.96kJ/mol42.0367 ±
0.0016
157-18-6*2
Ethynol C#CO95.492.9± 1.2kJ/mol42.0367 ±
0.0016
32038-79-2*2
Trioxidane OOO-72.75-81.24± 0.83kJ/mol50.01408 ±
0.00091
14699-99-1*2
Hydroxyformyl O[C]=O-174.36-177.39± 0.53kJ/mol45.0174 ±
0.0010
2564-86-5*2
Hydroxyformyl anion [C-](=O)O-319.52-322.11± 0.60kJ/mol45.0180 ±
0.0010
78944-70-4*2
Ethoxyethane CCOCC-222.75-250.17± 0.80kJ/mol74.1216 ±
0.0033
60-29-7*0
Acetone enol C=C(O)C-151.9-169.2± 1.1kJ/mol58.0791 ±
0.0025
29456-04-0*1
Chlorodioxidanyl ClO[O]103.91102.82± 0.37kJ/mol67.4515 ±
0.0011
17376-09-9*0
Acetate CC(=O)[O-]-496.6-505.7± 1.2kJ/mol59.0446 ±
0.0017
71-50-1*0
(Dimethylamino)methyl CN(C)[CH2]165.1142.0± 1.4kJ/mol58.1024 ±
0.0025
30208-47-0*0
Chloromethide [CH2-]Cl56.353.0± 2.0kJ/mol49.4798 ±
0.0012
60291-29-4*0
Chloric acid OCl(=O)=O2.1-5.0± 1.6kJ/mol84.4588 ±
0.0013
7790-93-4*0
Hexachloroethane C(C(Cl)(Cl)Cl)(Cl)(Cl)Cl-147.0-149.4± 1.3kJ/mol236.7376 ±
0.0056
67-72-1*0
cis-1,2-Dichloroethene C(\Cl)=C\Cl3.45-2.54± 0.54kJ/mol96.9427 ±
0.0024
156-59-2*0
Dichloroacetylene ClC#CCl230.05233.36± 0.95kJ/mol94.9268 ±
0.0024
7572-29-4*0
Fluorotrichloromethane C(Cl)(Cl)(Cl)F-286.4-289.6± 1.2kJ/mol137.3672 ±
0.0028
75-69-4*0
Perchloryl O=Cl(=O)[O]191.68186.01± 0.61kJ/mol83.4509 ±
0.0013
13932-10-0*0
Difluoromethylene [C](F)F-193.93-193.46± 0.38kJ/mol50.00751 ±
0.00080
2154-59-8*0
Chlorate O=Cl(=O)[O-]-207.3-212.8± 1.6kJ/mol83.4514 ±
0.0013
14866-68-3*0
Hexafluoroethane C(F)(F)(F)C(F)(F)F-1334.9-1343.2± 1.0kJ/mol138.0118 ±
0.0016
76-16-4*0
1,1-Difluoroethane CC(F)F-489.17-502.90± 0.56kJ/mol66.0500 ±
0.0016
75-37-6*0
1,1-Difluoroethene C=C(F)F-343.65-350.71± 0.82kJ/mol64.0341 ±
0.0016
75-38-7*0
2-Fluoroethanol FCCO-405.76-423.00± 0.99kJ/mol64.0589 ±
0.0017
371-62-0*0
Benzylide c1ccc(cc1)[CH2-]141.76122.85± 0.44kJ/mol91.1310 ±
0.0056
18860-15-6*0
Ethylbenzene c1ccc(cc1)CC58.1729.71± 0.55kJ/mol106.1650 ±
0.0064
100-41-4*0
Phenylethene c1ccc(cc1)C=C169.66148.32± 0.55kJ/mol104.1491 ±
0.0064
100-42-5*0
Phenylacetylene c1ccc(cc1)C#C332.4317.2± 1.1kJ/mol102.1332 ±
0.0064
536-74-3*0
Acetonate CC(=[O-])[CH2]-187.95-201.51± 0.98kJ/mol57.0717 ±
0.0024
24262-31-5*0
Propadienone C=C=C=O131.96130.32± 0.79kJ/mol54.0474 ±
0.0024
61244-93-7*0
Iodine monobromide IBr49.71540.768± 0.067kJ/mol206.8085 ±
0.0010
7789-33-5*0
Dioxaziridinyl [N]1OO1355.1352.6± 1.4kJ/mol46.00554 ±
0.00060
66252-29-7*0
Nitroxyl O=[N+]([O-])[O]79.4074.14± 0.19kJ/mol62.00494 ±
0.00090
12033-49-7*0
Isodiazene [N]N307.53300.45± 0.75kJ/mol30.02936 ±
0.00020
28647-38-3*0
Nitryl hydride [NH+](=O)[O-]-37.1-44.1± 1.5kJ/mol47.01348 ±
0.00061
90266-90-3*0
Carbon atom cation [C+]1797.8521803.450± 0.047kJ/mol12.01015 ±
0.00080
14067-05-1*0
Oxygen atom [O]436.666438.523± 0.0021kJ/mol15.99940 ±
0.00030
17778-80-2*2
Methyliumylidene [CH+]1619.7571623.100± 0.055kJ/mol13.01809 ±
0.00080
24361-82-8*0
Dioxygen anion O=[O-]-43.36-42.72± 0.17kJ/mol31.99935 ±
0.00060
11062-77-4*0
Ethylidyne [C]C508.53504.83± 0.80kJ/mol27.0452 ±
0.0016
67624-57-1*1
Methyleneamidogen C=[N]241.94238.29± 0.67kJ/mol28.03332 ±
0.00082
15845-29-1*0
(E)-Iminomethyl [CH]=N275.82272.21± 0.71kJ/mol28.03332 ±
0.00082
54980-10-8*0
Hydrogen isocyanide [C]=N191.98192.36± 0.37kJ/mol27.02538 ±
0.00081
6914-07-4*0
Hydroxyde [OH-]-230.014± 0.029kJ/mol17.00789 ±
0.00031
14280-30-9*800
Nitrilomethylium [C+]#N1776.91780.4± 1.3kJ/mol26.01689 ±
0.00080
12539-57-0*0
Methanol cation [CH3+]O856.84846.52± 0.32kJ/mol32.04131 ±
0.00090
12538-91-9*0
Methyloxonium CO.[H+]588.5574.3± 1.2kJ/mol33.04925 ±
0.00092
17836-08-7*0
Hydroxymethylene [CH]O219.3216.4± 1.1kJ/mol30.02598 ±
0.00087
19710-56-6*3
Aquacarbon [C].O442.7441.1± 1.3kJ/mol30.02598 ±
0.00087
81434-73-3*1
Carbonic acid OC(=O)O-596.90-607.01± 0.83kJ/mol62.0248 ±
0.0012
463-79-6*2
Carbonic acid OC(=O)O-561.67-570.51± 0.97kJ/mol62.0248 ±
0.0012
463-79-6*3
Hydrogen carbonate O[C](=O)[O-]-720.6-726.9± 1.4kJ/mol61.0174 ±
0.0012
71-52-3*0
Ozonide O=[O-]=O-58.48-60.84± 0.21kJ/mol47.99875 ±
0.00090
12596-80-4*0
n-Propylium CC[CH2+]856.96838.68± 0.86kJ/mol43.0871 ±
0.0024
19252-52-9*0
Allyl anion C=C[CH2-]134.13123.12± 0.24kJ/mol41.0723 ±
0.0024
1724-46-5*0
Cyclopropyl C1C[CH]1303.3290.7± 1.5kJ/mol41.0718 ±
0.0024
2417-82-5*0
Propylidyne CC[C]624.5613.0± 1.3kJ/mol41.0718 ±
0.0024
85056-54-8*2
1-Propynylide CC#[C-]264.21260.63± 0.84kJ/mol39.0565 ±
0.0024
36147-87-2*0
1-Propen-1-yl-3-ylidene [CH]C=[CH]657.4653.9± 1.5kJ/mol39.0559 ±
0.0024
84654-90-0*11
sec-Butyl CC[CH]C90.8466.07± 0.95kJ/mol57.1143 ±
0.0033
2348-55-2*0
Cyclohexane C1CCCCC1-83.57-123.13± 0.36kJ/mol84.1595 ±
0.0049
110-82-7*0
Trioxygen difluoride FOOOF112.2106.5± 1.1kJ/mol85.99501 ±
0.00090
16829-28-0*1
Oxirene C1=CO1387.9383.7± 1.7kJ/mol42.0367 ±
0.0016
157-18-6*11
Oxiranylidene C1[C]O1213.5209.3± 1.4kJ/mol42.0367 ±
0.0016
50983-85-2*2
Oxoethylidene [CH]C=O261.2257.7± 1.6kJ/mol42.0367 ±
0.0016
39920-84-8*12
Dioxirane C1OO19.411.75± 0.55kJ/mol46.0254 ±
0.0010
157-26-6*0
Hydroxyformyl anion [C-](=O)O-313.70-315.51± 0.61kJ/mol45.0180 ±
0.0010
78944-70-4*1
Bromochlorane BrCl21.87914.435± 0.060kJ/mol115.3567 ±
0.0013
13863-41-7*0
Ethoxyethene C=COCC-117.4-141.1± 1.5kJ/mol72.1057 ±
0.0033
109-92-2*2
Cyanic acid OC#N-12.20-14.91± 0.49kJ/mol43.02478 ±
0.00086
420-05-3*0
Isofulminic acid O[N+]#[C-]235.38233.67± 0.48kJ/mol43.02478 ±
0.00086
506-85-4*0
Oxidanylium [OH+]1293.1881293.217± 0.035kJ/mol17.00679 ±
0.00031
12259-29-9*0
Acetic acid CC(=O)O-418.88-433.01± 0.43kJ/mol60.0520 ±
0.0017
64-19-7*0
Ethyl formate C(=O)OCC-375.1-393.7± 1.2kJ/mol74.0785 ±
0.0025
109-94-4*1
Methoxyoxomethyl CO[C]=O-152.5-160.6± 1.5kJ/mol59.0440 ±
0.0017
16481-04-2*1
(Formyloxy)methyl O=CO[CH2]-151.9-160.0± 1.3kJ/mol59.0440 ±
0.0017
3122-12-1*1
Carboxymethyl [CH2]C(=O)O-227.4-237.3± 1.2kJ/mol59.0440 ±
0.0017
2887-46-9*1
Ethylene glycol OCCO-369.75-389.37± 0.40kJ/mol62.0678 ±
0.0018
107-21-1*0
(Methylamino)methyl cation CN[CH2+]728.81710.19± 0.99kJ/mol44.0752 ±
0.0017
*31277-24-4*0
Diazomethyl [CH]=[N]=[N]470.6468.1± 1.5kJ/mol41.03212 ±
0.00082
20813-32-5*0
Isocyanoamidogen [NH][N+]#[C-]491.1489.1± 1.5kJ/mol41.03212 ±
0.00082
947408-73-3*0
Dichloromethyl [CH](Cl)Cl92.0890.17± 0.88kJ/mol83.9240 ±
0.0020
3474-12-2*0
Chloromethyl [CH2]Cl118.35115.28± 0.87kJ/mol49.4793 ±
0.0012
6806-86-6*0
Methyl hypochlorite COCl-53.1-63.0± 1.4kJ/mol66.4866 ±
0.0013
593-78-2*0
Hypochloroperoxoous acid, hydroxy ester OOOCl49.142.2± 1.9kJ/mol84.4588 ±
0.0013
928652-99-7*1
1,2-Dichloroethane C(Cl)CCl-118.57-130.51± 0.54kJ/mol98.9586 ±
0.0024
107-06-2*0
Chlorofluoromethane C(F)Cl-256.3-263.4± 1.3kJ/mol68.4777 ±
0.0012
593-70-4*0
Difluoromethyliumyl [C+](F)F908.13908.56± 0.78kJ/mol50.00696 ±
0.00080
54250-40-7*0
Trioxidanyl OO[O]25.3223.33± 0.13kJ/mol49.00614 ±
0.00090
12500-78-6*1
Formyl chloride C(=O)Cl-179.99-183.20± 0.77kJ/mol64.4707 ±
0.0012
2565-30-2*0
Chloroformyl Cl[C]=O-21.92-20.52± 0.49kJ/mol63.4628 ±
0.0012
2602-42-8*0
1,3-Butadiyne C#CC#C458.32460.05± 0.82kJ/mol50.0587 ±
0.0032
460-12-8*0
o-Benzyne anion C1=CC#CC=[CH-]1413.71404.60± 0.97kJ/mol76.0965 ±
0.0048
100569-88-8*0
Cycloheptene C1CCC=CCC128.11-9.12± 0.75kJ/mol96.1702 ±
0.0057
628-92-2*0
Cycloheptatriene C1C=CC=CC=C1206.92183.50± 0.95kJ/mol92.1384 ±
0.0056
544-25-2*0
Fluorobenzene cation c1ccc(cc1)[F+]788.90773.88± 0.89kJ/mol96.1018 ±
0.0048
34468-25-2*0
Nitrosobenzene c1ccc(cc1)N=O215.7198.7± 1.2kJ/mol107.1100 ±
0.0048
586-96-9*0
Nitromethyl C=[N+](=O)[O-]138.9129.5± 1.2kJ/mol60.0321 ±
0.0010
16787-85-2*0
Methylketene CC=C=O-54.7-64.2± 1.1kJ/mol56.0633 ±
0.0024
6004-44-0*0
Acrolein C=CC=O-55.3-65.7± 1.2kJ/mol56.0633 ±
0.0024
107-02-8*1
Dinitrogen pentoxide O=[N+]([O-])O[N+](=O)[O-]24.4314.86± 0.35kJ/mol108.0105 ±
0.0015
10102-03-1*0
Chlorine difluoride [Cl](F)F-47.2-48.3± 1.4kJ/mol73.44951 ±
0.00090
24801-48-7*0
Bifluoride F.[F-]-481.8-480.6± 1.9kJ/mol39.005295 ±
0.000070
*18130-74-0*2
Diazenyl [N]=N252.17249.25± 0.47kJ/mol29.02142 ±
0.00016
36882-13-0*0
Trioxidanylium OO[O+]1070.61064.3± 1.4kJ/mol49.00559 ±
0.00090
74241-49-9*1
Peroxynitric acid [N+](=O)([O-])OO-42.6-53.0± 1.3kJ/mol79.0123 ±
0.0012
26404-66-0*0
Nitrosyl chloride ClN=O54.45352.552± 0.067kJ/mol65.45884 ±
0.00095
2696-92-6*0
Carbon dioxide C(=O)=O49.850.6± 1.1kJ/mol44.00950 ±
0.00100
124-38-9*1
Methane cation [CH4+]1150.6731144.290± 0.066kJ/mol16.04191 ±
0.00085
20741-88-2*0
Oxoniumyl ion [H][O+][H]978.466975.563± 0.028kJ/mol18.01473 ±
0.00033
56583-62-1*0
Hydrogen chloride Cl-165.757± 0.025kJ/mol36.46064 ±
0.00090
7647-01-0*828
Ethanium [CH3+][H][CH3]874.34858.10± 0.62kJ/mol31.0764 ±
0.0017
24669-33-8*0
Hydrogen fluoride F-321.09± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*820
Acetylene cation C#[CH+]1328.831328.17± 0.13kJ/mol26.0367 ±
0.0016
25641-79-6*0
Vinylidene [C]=C411.24412.16± 0.33kJ/mol26.0373 ±
0.0016
2143-69-3*0
1-Ethylium-1-ylidene [C+]C1329.61328.2± 1.2kJ/mol27.0447 ±
0.0016
78949-84-5*0
Ethylidyne anion [C-]C457.0452.9± 1.2kJ/mol27.0458 ±
0.0016
117768-70-4*0
Vinylidene anion [C-]=C364.13363.95± 0.63kJ/mol26.0378 ±
0.0016
66295-36-1*0
Ethynylium C#[C+]1687.571690.91± 0.16kJ/mol25.0288 ±
0.0016
16456-59-0*0
Bromide [Br-]-120.96± 0.15kJ/mol79.90455 ±
0.00100
24959-67-9*800
Methyloxoniumylidene C[O+]1062.741054.93± 0.75kJ/mol31.03337 ±
0.00088
58157-09-8*0
Hydroxymethylene [CH]O131.10127.35± 0.29kJ/mol30.02598 ±
0.00087
19710-56-6*2
Hydroxymethylene cation [CH+]O971.9968.2± 1.4kJ/mol30.02543 ±
0.00087
135395-06-1*1
Azide [N]N=[N-]193.50190.00± 0.91kJ/mol42.02077 ±
0.00021
14343-69-2*0
Isoformyl [C]O217.26217.64± 0.69kJ/mol29.01804 ±
0.00086
71080-92-7*0
Dioxidenium O[O+]1110.871107.98± 0.11kJ/mol33.00619 ±
0.00060
12207-52-2*0
1-Methylethylidene C[C]C316.5302.6± 2.1kJ/mol42.0797 ±
0.0024
40852-89-9*2
Propylidene CC[CH]349.5335.8± 1.4kJ/mol42.0797 ±
0.0024
6700-78-3*1
Allylium C=C[CH2+]964.59953.03± 0.45kJ/mol41.0713 ±
0.0024
1724-44-3*0
1-Propenyl CC=[CH]280.26269.43± 0.80kJ/mol41.0718 ±
0.0024
6067-68-1*1
1H-Triazirin-1-yl [N]1N=[N]1585.9584.1± 2.0kJ/mol42.02022 ±
0.00021
912535-95-6*0
Iodide [I-]-56.826± 0.090kJ/mol126.905019 ±
0.000030
20461-54-5*800
Propargylium [CH2+]C#C1193.441190.63± 0.38kJ/mol39.0554 ±
0.0024
21540-27-2*0
Cycloprop-1-enyl C1C=[C]1527.52523.14± 0.67kJ/mol39.0559 ±
0.0024
19528-44-0*0
n-Butyl anion CCC[CH2-]105.880.9± 1.3kJ/mol57.1148 ±
0.0033
79431-01-9*0
sec-Butyl anion CC[CH-]C103.078.5± 1.3kJ/mol57.1148 ±
0.0033
79431-00-8*0
Cyclobutane C1CCC152.3527.82± 0.41kJ/mol56.1063 ±
0.0032
287-23-0*0
Cyclopentene C1CC=CC159.3635.09± 0.46kJ/mol68.1170 ±
0.0040
142-29-0*0
n-Heptane CCCCCCC-145.66-187.53± 0.48kJ/mol100.2019 ±
0.0057
142-82-5*0
n-Octane CCCCCCCC-161.42-208.25± 0.67kJ/mol114.2285 ±
0.0065
111-65-9*0
1-Hydroxyethylium C[CH+]O610.9596.4± 1.3kJ/mol45.0600 ±
0.0017
18682-96-7*2
Ethenol C=CO-108.23-119.03± 0.77kJ/mol44.0526 ±
0.0017
557-75-5*2
Vinyl alcohol cation C=C[OH+]778.8767.6± 1.4kJ/mol44.0520 ±
0.0017
57239-63-1*2
Oxiranyl C1[CH]O1172.5164.2± 1.4kJ/mol43.0446 ±
0.0016
31586-84-2*0
Oxiranylium C1[CH+]O1901.1893.1± 1.5kJ/mol43.0441 ±
0.0016
57789-76-1*2
C=O=C [C]=[O]=[C]653.2657.5± 1.7kJ/mol40.0208 ±
0.0016
*12071-23-7*1
C=O=C [C]=[O]=[C]721.0725.4± 1.7kJ/mol40.0208 ±
0.0016
*12071-23-7*2
Oxoethylidene [CH]C=O275.5272.7± 1.9kJ/mol42.0367 ±
0.0016
39920-84-8*2
Formic acid cation [CH+](=O)O721.87714.79± 0.26kJ/mol46.0248 ±
0.0010
50614-05-6*1
Formyloxidanyl C(=O)[O]-122.01-125.36± 0.56kJ/mol45.0174 ±
0.0010
16499-21-1*2
1-Propanol CCCO-231.42-255.27± 0.25kJ/mol60.0950 ±
0.0025
71-23-8*0
Fulminic acid C#[N+][O-]170.92169.46± 0.49kJ/mol43.02478 ±
0.00086
51060-05-0*0
Water anion [H][O-][H]31.329.8± 3.1kJ/mol18.01583 ±
0.00033
12259-30-2*100
(Formyloxy)methyl O=CO[CH2]-136.3-144.5± 1.4kJ/mol59.0440 ±
0.0017
3122-12-1*2
Carboxymethyl [CH2]C(=O)O-206.7-216.0± 1.3kJ/mol59.0440 ±
0.0017
2887-46-9*2
Dimethylamide C[N-]C122.1103.7± 1.7kJ/mol44.0763 ±
0.0017
34285-60-4*0
Chloryl hydride [H][Cl](=O)=O197.6191.2± 1.6kJ/mol68.4594 ±
0.0011
174365-32-3*0
Hydrogen difluoride F.[F]-198.5-198.4± 1.2kJ/mol39.004746 ±
0.000070
12528-21-1*1
1,1,2-Trichloroethane C(Cl)C(Cl)Cl-136.6-148.3± 1.4kJ/mol133.4033 ±
0.0031
79-00-5*0
1,1,1,2-Tetrachloroethane C(Cl)C(Cl)(Cl)Cl-144.6-153.1± 1.3kJ/mol167.8481 ±
0.0039
630-20-6*0
Pentachloroethyl C(Cl)(Cl)(Cl)[C](Cl)Cl26.925.0± 1.3kJ/mol201.2849 ±
0.0048
7094-17-9*0
Oxygen atom [O]246.844249.229± 0.0021kJ/mol15.99940 ±
0.00030
17778-80-2*1
Iodomethane CI-12.18± 0.20kJ/mol141.93899 ±
0.00083
74-88-4*590
Fluoride [F-]-334.49± 0.16kJ/mol18.99895178 ±
0.00000050
16984-48-8*800
Difluoromethylene [C](F)F43.2643.97± 0.38kJ/mol50.00751 ±
0.00080
2154-59-8*1
Fluoromethyliumylidene [C+]F1122.851126.06± 0.46kJ/mol31.00855 ±
0.00080
33412-11-2*0
Iodine atom cation [I+]1115.5491115.149± 0.0062kJ/mol126.903921 ±
0.000030
22541-93-1*0
Ethyl iodide CCI-9.40-39.27± 0.49kJ/mol155.9656 ±
0.0016
75-03-6*500
1,2-Difluoroacetylene FC#CF2.855.68± 0.66kJ/mol62.0182 ±
0.0016
689-99-6*0
Fluoro(fluorooxy)methylene F[C]OF-134.8-136.0± 1.3kJ/mol66.00691 ±
0.00085
479587-30-9*2
Dibromophosgene C(Br)(Br)=O-97.99-113.92± 0.37kJ/mol187.8181 ±
0.0022
593-95-3*0
Benzene c1ccccc150.7149.16± 0.23kJ/mol78.1118 ±
0.0048
71-43-2*500
o-Benzyne C1=CC#CC=C1468.03459.11± 0.88kJ/mol76.0960 ±
0.0048
462-80-6*0
m-Benzyne c1[c]ccc[c]1526.9518.5± 1.2kJ/mol76.0960 ±
0.0048
1828-89-3*2
p-Benzyne c1c[c]cc[c]1587.0577.5± 1.2kJ/mol76.0960 ±
0.0048
3355-34-8*2
Cycloheptane C1CCCCCC1-72.82-118.31± 0.53kJ/mol98.1861 ±
0.0057
291-64-5*0
Phenoxy c1ccc(cc1)[O]71.1055.82± 0.88kJ/mol93.1033 ±
0.0048
2122-46-5*0
Benzoyl fluoride c1ccc(cc1)C(=O)F-288.2-304.6± 1.5kJ/mol124.1124 ±
0.0056
455-32-3*0
Iodobenzene c1ccc(cc1)I177.7161.7± 1.0kJ/mol204.0084 ±
0.0048
591-50-4*0
2-Cyclopropen-1-one O=C1C=C1163.8159.8± 1.2kJ/mol54.0474 ±
0.0024
2961-80-0*0
Chlorine difluoride cation [Cl+](F)F998.8996.6± 1.7kJ/mol73.44896 ±
0.00090
32629-46-2*0
Dioxyamidogen [NH-][O+]=O240.4233.8± 1.8kJ/mol47.01348 ±
0.00061
71843-95-3*2
Hydrogen difluoride cation [F+]F[H]1174.31171.3± 1.5kJ/mol39.004198 ±
0.000070
*126950-54-7*0
Peroxynitrous acid OON=O-0.19-7.24± 0.53kJ/mol63.01288 ±
0.00091
14691-52-2*2
Dioxiranylidene [C]1OO1190.3191.1± 1.4kJ/mol44.00950 ±
0.00100
138832-57-2*0
Methylidyne [CH]592.825596.159± 0.099kJ/mol13.01864 ±
0.00080
3315-37-5*1
Oxofluoronium O=[F+]1342.641342.59± 0.81kJ/mol34.99725 ±
0.00030
12763-67-6*0
Hydrogen fluoride F-321.12± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*821
Methylammonium C[NH3+]628.1609.2± 1.4kJ/mol32.06453 ±
0.00091
17000-00-9*0
Aminomethylene [CH][NH2]245.9238.1± 1.5kJ/mol29.04126 ±
0.00083
35430-17-2*0
Methyleneamidogen anion C=[N-]192.71188.96± 0.96kJ/mol28.03387 ±
0.00082
28892-56-0*0
2-Hydrotrioxy cation [O][OH][O+]1297.91291.3± 1.5kJ/mol49.00559 ±
0.00090
*74241-49-9*0
(Z)-Iminomethyl [CH]=N294.50291.01± 0.91kJ/mol28.03332 ±
0.00082
54980-11-9*0
Aminomethylidyne [C]N371.9368.3± 1.1kJ/mol28.03332 ±
0.00082
84654-89-7*0
Chlorine chlorite ClO[Cl]=O168.6166.2± 1.3kJ/mol102.9042 ±
0.0019
105206-44-8*3
Oxywater [OH2][O]64.958.4± 1.3kJ/mol34.01468 ±
0.00062
171363-09-0*0
Oxygen cation monohydrate [H]O[H][O+]1153.41147.9± 3.2kJ/mol34.01413 ±
0.00062
*31748-17-1*0
Oxygen anion monohydrate [H]O[H][O-]-239.0-244.3± 3.0kJ/mol34.01523 ±
0.00062
31748-17-1*0
Methyleneoxonium [CH2].O152.48144.16± 0.49kJ/mol32.04186 ±
0.00090
177788-17-9*0
Hydroxymethylene anion [CH-]O147.1144.1± 1.6kJ/mol30.02653 ±
0.00087
207914-87-2*1
Hydroxymethyliumylidene [C+]O986.02987.66± 0.83kJ/mol29.01749 ±
0.00086
60528-75-8*0
Isoformyl anion [C][O].[H-]55.758.4± 1.8kJ/mol29.01859 ±
0.00086
81747-63-9*1
Peroxyformic acid C(=O)OO-265.3-273.3± 1.6kJ/mol62.0248 ±
0.0012
107-32-4*2
Hydroxyoxomethoxy O[C](=O)[O]-358.8-365.0± 1.5kJ/mol61.0168 ±
0.0012
38330-85-7*0
Hydroperoxycarbonyl OO[C]=O-72.9-76.8± 1.7kJ/mol61.0168 ±
0.0012
153751-35-0*0
Propan-1-yl-3-ylidene [CH2]C[CH]554.3545.6± 1.4kJ/mol41.0718 ±
0.0024
*50457-59-5*2
Cycloprop-2-enyl C1=C[CH]1490.25485.70± 0.64kJ/mol39.0559 ±
0.0024
28933-84-8*0
Cyclopropenylidene C1=C=C1497.06496.11± 0.46kJ/mol38.0480 ±
0.0024
16165-40-5*0
2-Propynylidyne anion C#C[C-]540.00544.78± 0.84kJ/mol37.0406 ±
0.0024
82893-67-2*0
Cyclopropynyl [CH]1C#C1710.9715.0± 1.1kJ/mol37.0400 ±
0.0024
119178-99-3*0
Deuterium atom [2H]219.804221.717± 0.000kJ/mol2.01410177800 ±
0.00000000040
16873-17-9*0
2-Hydrotrioxy anion [O][OH][O-]27.521.8± 1.4kJ/mol49.00669 ±
0.00090
*89965-38-8*0
Chlorosyl hydride [H]Cl[O]141.9139.1± 1.7kJ/mol52.46004 ±
0.00095
71572-35-5*0
t-Butylium C[C+](C)C733.86710.58± 0.98kJ/mol57.1137 ±
0.0033
14804-25-2*0
t-Butyl anion C[C-](C)C76.451.6± 1.5kJ/mol57.1148 ±
0.0033
65114-21-8*0
Aquachlorine cation [Cl+]O([H])[H]821.8815.0± 1.7kJ/mol53.46743 ±
0.00096
142599-65-3*0
iso-Butyl CC(C)[CH2]97.1773.18± 0.76kJ/mol57.1143 ±
0.0033
4630-45-9*0
Methylcyclopropane CC1CC147.724.5± 1.3kJ/mol56.1063 ±
0.0032
594-11-6*0
Cyclobutene C1CC=C1176.99159.95± 0.93kJ/mol54.0904 ±
0.0032
822-35-5*0
Dihydrogen fluoride anion F.[H-]133.2131.9± 1.6kJ/mol21.01483 ±
0.00014
117339-92-1*1
Triiodide I[I-]I-51.25± 0.80kJ/mol380.713959 ±
0.000090
14900-04-0*800
Ethanol CCO-269.72-277.48± 0.23kJ/mol46.0684 ±
0.0017
64-17-5*500
2-Hydroxyethyl [CH2]CO-5.1-17.5± 1.3kJ/mol45.0605 ±
0.0017
4422-54-2*3
Vinyl alcohol cation C=C[OH+]787.10775.88± 0.93kJ/mol44.0520 ±
0.0017
57239-63-1*1
Vinoxy C=C[O]22.6215.78± 0.86kJ/mol43.0446 ±
0.0016
6912-06-7*0
Vinoxy cation [CH2+]C=O1020.01013.0± 1.5kJ/mol43.0441 ±
0.0016
*35731-40-9*1
Vinoxide [CH2-]C=O-153.39-160.44± 0.86kJ/mol43.0452 ±
0.0016
35731-40-9*0
Oxiranyl anion C1[CH-]O1121.1113.1± 1.6kJ/mol43.0452 ±
0.0016
72722-59-9*2
Acetic acid CC(=O)O-485.19± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*800
COC vdW [C]=O.[C]590.0598.7± 1.7kJ/mol40.0208 ±
0.0016
*12071-24-8*1
(E)-Diazene cation [H]/N=[N+]/[H]1132.471125.53± 0.66kJ/mol30.02881 ±
0.00020
59952-06-6*0
Oxirene C1=CO1389.8385.7± 1.7kJ/mol42.0367 ±
0.0016
157-18-6*12
(Z)-Diazene [H]/N=N\[H]228.81221.68± 0.64kJ/mol30.02936 ±
0.00020
15626-42-3*0
Perchloric acid OCl(=O)(=O)=O13.21.8± 1.8kJ/mol100.4582 ±
0.0015
7601-90-3*0
Formyloxoniumylidene C(=O)[O+]1017.11013.7± 1.4kJ/mol45.0169 ±
0.0010
54375-27-8*0
Dioxymethylene [CH]O[O]364.0361.7± 2.4kJ/mol45.0174 ±
0.0010
438586-67-5*1
2-Propanol CC(O)C-249.52-273.62± 0.38kJ/mol60.0950 ±
0.0025
67-63-0*0
Cyanate N#C[O-]-221.10-221.32± 0.54kJ/mol42.01739 ±
0.00086
661-20-1*0
Nitrosomethylidyne [C]N=O389.5390.8± 1.5kJ/mol42.01684 ±
0.00086
82267-15-0*0
Oxazirinyl [C]1=NO1449.9450.7± 1.5kJ/mol42.01684 ±
0.00086
228850-18-8*0
Trioxidaniumyl O[O+]O925.4916.2± 1.5kJ/mol50.01353 ±
0.00091
161321-37-5*2
Propionic acid CCC(=O)O-436.42-454.32± 0.60kJ/mol74.0785 ±
0.0025
79-09-4*1
2-Methoxy-2-oxoethyl [CH2]C(=O)OC-203.4-218.6± 1.6kJ/mol73.0706 ±
0.0025
54668-31-4*1
(Acetyloxy)methyl CC(=O)O[CH2]-200.8-214.5± 1.6kJ/mol73.0706 ±
0.0025
2887-49-2*1
Dimethylmethyleneammonium C[N+](C)[CH2]695.9670.8± 1.4kJ/mol58.1018 ±
0.0025
28149-27-1*0
Trichloromethide [C-](Cl)(Cl)Cl-125.0-124.4± 2.0kJ/mol118.3693 ±
0.0028
14478-07-0*0
1,1,2,2-Tetrachloroethane C(Cl)(Cl)C(Cl)Cl-146.9-156.3± 1.5kJ/mol167.8481 ±
0.0039
79-34-5*0
1,1,2,2-Tetrachloroethane C(Cl)(Cl)C(Cl)Cl-173.1-202.0± 1.5kJ/mol167.8481 ±
0.0039
79-34-5*500
Pentachloroethane C(C(Cl)(Cl)Cl)(Cl)Cl-202.9± 2.5kJ/mol202.2928 ±
0.0048
76-01-7*500
Trichloroethene C(Cl)=C(Cl)Cl-49.3± 1.5kJ/mol131.3874 ±
0.0031
79-01-6*590
Tetrachloroethene C(=C(Cl)Cl)(Cl)Cl-63.0± 1.1kJ/mol165.8322 ±
0.0039
127-18-4*500
Trichloroethene C(Cl)=C(Cl)Cl-11.4-14.7± 1.5kJ/mol131.3874 ±
0.0031
79-01-6*0
Bifluoride F.[F-]-68.0-67.6± 1.6kJ/mol39.005295 ±
0.000070
*18130-74-0*1
Bromodichloromethane C(Cl)(Cl)Br-37.7-49.4± 1.3kJ/mol163.8280 ±
0.0022
75-27-4*0
Difluorodibromomethane C(F)(F)(Br)Br-366.1-383.8± 1.4kJ/mol209.8155 ±
0.0022
75-61-6*0
Dichlorodibromomethane C(Cl)(Cl)(Br)Br20.54.9± 1.5kJ/mol242.7241 ±
0.0028
594-18-3*0
Chlorine fluoride cation [Cl+]F1165.521165.70± 0.49kJ/mol54.45055 ±
0.00090
12432-44-9*0
Difluorobromomethane C(F)(F)Br-410.66-423.86± 0.48kJ/mol130.9194 ±
0.0013
1511-62-2*0
1,2-Difluoroethane C(F)CF-434.54-447.96± 0.82kJ/mol66.0500 ±
0.0016
624-72-6*0
Hydroxyaminiumyl [N+]O1161.21158.3± 1.4kJ/mol31.01353 ±
0.00032
63559-88-6*0
Fluoro(fluorooxy)methylene F[C]OF-37.5-39.1± 1.4kJ/mol66.00691 ±
0.00085
479587-30-9*1
Fluorohydrochlorine cation FCl[H+]975.3972.3± 2.0kJ/mol55.45849 ±
0.00090
70110-64-4*0
Peroxychlorous acid O=ClOO96.290.2± 2.1kJ/mol84.4588 ±
0.0013
177778-92-6*1
Phenylium c1cccc[c+]11251.11238.0± 1.9kJ/mol77.1034 ±
0.0048
17333-73-2*1
Nitrosodioxaziridine O=NN1OO1413.6407.6± 1.8kJ/mol76.01168 ±
0.00091
132871-99-9*1
Chlorobenzene cation c1ccc(cc1)[Cl+]942.47928.55± 0.61kJ/mol112.5561 ±
0.0049
55450-32-3*0
Chlorobenzene c1ccc(cc1)Cl11.22± 0.59kJ/mol112.5566 ±
0.0049
108-90-7*500
Bromobenzene cation c1ccc(cc1)[Br+]994.8973.2± 1.3kJ/mol157.0074 ±
0.0049
55450-33-4*0
Hydroxyamidogen [NH]O123.5116.9± 1.7kJ/mol32.02202 ±
0.00034
13940-32-4*2
Iodobenzene c1ccc(cc1)I112.8112.9± 1.1kJ/mol204.0084 ±
0.0048
591-50-4*500
Nitrobenzene c1ccc(cc1)[N+](=O)[O-]81.461.4± 1.4kJ/mol123.1094 ±
0.0049
98-95-3*0
Methyl nitrite CON=O-55.62-66.29± 0.45kJ/mol61.0401 ±
0.0010
624-91-9*0
1,3-Butadien-2-ol C=C(O)C=C-53.8-70.8± 1.6kJ/mol70.0898 ±
0.0032
59120-04-6*11
Dinitrogen tetraoxide O=N(=O)N(=O)=O20.1510.86± 0.14kJ/mol92.0111 ±
0.0012
10544-72-6*0
Hydroxyaminylium [NH+]O1019.61012.4± 2.5kJ/mol32.02147 ±
0.00034
66097-71-0*1
Chloride [Cl-]-166.991± 0.023kJ/mol35.45325 ±
0.00090
16887-00-6*800
Hydroxyimidogen [N]O218.00215.12± 0.89kJ/mol31.01408 ±
0.00032
35337-59-8*0
Ethylene cation C=[CH2+]1075.201067.98± 0.12kJ/mol28.0526 ±
0.0016
34470-02-5*0
Nitrous acid N(=O)O-71.39-77.74± 0.26kJ/mol47.01348 ±
0.00061
7782-77-6*2
Trihydrogen dioxide anion [OH][H][OH-]-487.5-495.8± 1.1kJ/mol35.02317 ±
0.00064
12501-19-8*0
Iminomethyl anion [CH-]=N237.4233.5± 1.8kJ/mol28.03387 ±
0.00082
90623-30-6*1
Fluoronium [H][F+][H]1490.11491.5± 1.9kJ/mol21.01373 ±
0.00014
12206-67-6*1
Cyanogen iodide anion IC#[N-]86.588.8± 8.1kJ/mol152.92246 ±
0.00080
1356929-44-6*0
Methanol CO-235.25-238.59± 0.15kJ/mol32.04186 ±
0.00090
67-56-1*500
Azanylium [NH2+]1266.561264.49± 0.11kJ/mol16.02207 ±
0.00016
15194-15-7*0
Formaldehyde cation C=[O+]944.863941.242± 0.099kJ/mol30.02543 ±
0.00087
54288-05-0*0
Isoformyl anion [C][O].[H-]267.4268.0± 1.6kJ/mol29.01859 ±
0.00086
81747-63-9*2
Dioxygen O=O94.41094.383± 0.000kJ/mol31.99880 ±
0.00060
7782-44-7*2
Ammonia N-80.886± 0.053kJ/mol17.03056 ±
0.00022
7664-41-7*1000
Hydroxydioxonitrate O[N](=O)[O-]-193.2-197.6± 2.4kJ/mol63.01343 ±
0.00091
58875-09-5*0
Ammonium nitrate [NH4+].O=[N+]([O-])[O-]-350.29-365.26± 0.18kJ/mol80.04344 ±
0.00095
6484-52-2*500
1-Propynyl CC#[C]528.16525.98± 0.84kJ/mol39.0559 ±
0.0024
89342-91-6*0
2-Propen-1-yl-3-ylidene [CH2]C=[C]556.7554.4± 1.3kJ/mol39.0559 ±
0.0024
202744-74-9*0
2-Cyclopropen-1-ylium-1-yl C1=[C+]=C11382.01380.9± 1.1kJ/mol38.0474 ±
0.0024
85398-75-0*0
Propynylidene [CH]=C=[CH]597.6599.3± 1.3kJ/mol38.0480 ±
0.0024
67152-18-5*3
Propenediylidene [CH][CH][C]796.2797.3± 1.4kJ/mol38.0480 ±
0.0024
60731-11-5*0
n-Butylium CCC[CH2+]827.4803.1± 1.2kJ/mol57.1137 ±
0.0033
25453-90-1*0
Fluoronium [H][F+][H]774.10771.16± 0.88kJ/mol21.01373 ±
0.00014
12206-67-6*0
Dibromide Br[Br-]-199.2-213.3± 2.0kJ/mol159.8085 ±
0.0020
12595-70-9*0
Dihydrogen fluoride anion [F-].[H][H]-257.0-260.1± 1.9kJ/mol21.01483 ±
0.00014
*117339-92-1*2
Oxochloronium [Cl+]=O1150.861150.69± 0.66kJ/mol51.45155 ±
0.00095
12301-79-0*0
iso-Hexane CCCC(C)C-134.66-173.92± 0.84kJ/mol86.1754 ±
0.0049
107-83-5*0
Azidonitrene [N]=NN=[N]692.1687.5± 1.4kJ/mol56.02696 ±
0.00028
147363-92-6*2
Ethyloxoniumyl CC[OH+]783.3766.3± 1.7kJ/mol46.0679 ±
0.0017
34480-55-2*0
1-Hydroxyethylium C[CH+]O608.78594.35± 0.40kJ/mol45.0600 ±
0.0017
18682-96-7*0
Chlorosyl chloride ClCl[O]134.5133.2± 1.4kJ/mol86.9048 ±
0.0018
86825-56-1*0
2-Hydroxyethylium [CH2+]CO1019.21006.4± 1.6kJ/mol45.0600 ±
0.0017
38607-31-7*3
Ethyloxoniumylidene CC[O+]988.8975.1± 1.5kJ/mol45.0600 ±
0.0017
54387-07-4*0
Acetaldehyde cation CC=[O+]831.83821.85± 0.27kJ/mol44.0520 ±
0.0017
36505-03-0*0
Oxiranylium C1[CH+]O11233.41226.4± 1.7kJ/mol43.0441 ±
0.0016
57789-76-1*1
Oxiranyl anion C1[CH-]O1140.8134.8± 1.6kJ/mol43.0452 ±
0.0016
72722-59-9*1
Ketene C=C=O-45.34-48.46± 0.12kJ/mol42.0367 ±
0.0016
463-51-4*2
Ketenyl anion [CH-]=C=O-48.38-47.46± 0.84kJ/mol41.0293 ±
0.0016
64066-01-9*0
Dicarbon monoxide anion [C-]=C=O154.34157.98± 0.98kJ/mol40.0213 ±
0.0016
87191-88-6*0
Dicarbon monoxide [C]=C=O440.38444.72± 0.98kJ/mol40.0208 ±
0.0016
12071-23-7*2
COC vdW [C]=O.[C]726.4734.8± 1.8kJ/mol40.0208 ±
0.0016
*12071-24-8*2
C=O-C cation [C]=[O+][C]1576.21583.3± 2.4kJ/mol40.0203 ±
0.0016
83483-98-1*1
C=O=C anion [C-]=[O+]=[C-]550.4554.2± 2.2kJ/mol40.0213 ±
0.0016
*87191-88-6*0
Oxirene cation C1=C[O+]11106.31102.6± 2.0kJ/mol42.0361 ±
0.0016
94664-69-4*0
Ethynol C#CO400.2397.7± 2.0kJ/mol42.0367 ±
0.0016
32038-79-2*11
Nitronium O=[N+]=O961.78958.23± 0.20kJ/mol46.00499 ±
0.00060
14522-82-8*0
Oxoethylidene [CH]C=O266.0262.7± 1.9kJ/mol42.0367 ±
0.0016
39920-84-8*11
Chlorite O=[Cl-]=O-105.62-107.79± 0.35kJ/mol67.4520 ±
0.0011
14998-27-7*0
Formic acid cation [CH+](=O)O723.7716.7± 1.2kJ/mol46.0248 ±
0.0010
50614-05-6*2
Formic acid anion [CH-](=O)O-256.2-262.4± 1.8kJ/mol46.0259 ±
0.0010
19066-82-1*1
Fluorosyl fluoride FF[O]192.6193.1± 2.3kJ/mol53.99621 ±
0.00030
86825-57-2*1
Chlorohydrofluorine cation ClF[H+]1000.8998.1± 2.1kJ/mol55.45849 ±
0.00090
70110-63-3*0
Isocyanic acid cation [NH+]=C=O1003.101000.43± 0.51kJ/mol43.02423 ±
0.00086
444010-28-0*0
Peroxyimidogen [N]O[O]405.4403.4± 1.9kJ/mol46.00554 ±
0.00060
*60488-31-5*0
Fulminic acid cation C#[N+][O]1215.81213.0± 1.3kJ/mol43.02423 ±
0.00086
114766-65-3*0
Hydrogen fluoride F-321.05± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*902
Acetic acid CC(=O)O-484.92± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*840
Acetyl chloride CC(=O)Cl-272.17± 0.33kJ/mol78.4973 ±
0.0019
75-36-5*500
Methyl formate COC=O-388.41± 0.88kJ/mol60.0520 ±
0.0017
107-31-3*500
Ethyl formate C(=O)OCC-355.5-374.6± 1.5kJ/mol74.0785 ±
0.0025
109-94-4*2
Dioxymethylidyne [C]O[O]299.8301.1± 1.7kJ/mol44.00950 ±
0.00100
791121-04-5*0
Oxadiazirene N1=NO1351.7349.9± 1.7kJ/mol44.01288 ±
0.00033
227934-45-4*0
2-Methoxy-2-oxoethyl [CH2]C(=O)OC-173.3-188.5± 1.8kJ/mol73.0706 ±
0.0025
54668-31-4*2
(Acetyloxy)methyl CC(=O)O[CH2]-174.4-187.5± 1.7kJ/mol73.0706 ±
0.0025
2887-49-2*2
Glyoxal O=CC=O-206.91-212.55± 0.52kJ/mol58.0361 ±
0.0017
107-22-2*1
Hydrogen fluoride F-321.10± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*904
NON [N]O[N]545.5542.6± 1.7kJ/mol44.01288 ±
0.00033
227934-46-5*0
Isocyanomethylidyne [C][N+]#[C-]672.2676.6± 1.7kJ/mol38.0281 ±
0.0016
53590-27-5*0
Cyanomethylidyne [C]C#N685.4689.8± 2.1kJ/mol38.0281 ±
0.0016
4120-02-9*0
Tetrachloromethane C(Cl)(Cl)(Cl)Cl-108.74-128.15± 0.44kJ/mol153.8215 ±
0.0037
56-23-5*500
Dichloromethylene anion [C-](Cl)Cl75.6277.90± 0.78kJ/mol82.9166 ±
0.0020
118364-73-1*0
Dichloromethylium [CH+](Cl)Cl894.6891.4± 1.2kJ/mol83.9235 ±
0.0020
56932-33-3*0
Dichloromethide [CH-](Cl)Cl-41.1-42.8± 2.0kJ/mol83.9246 ±
0.0020
32180-91-9*0
Chloromethylium [CH2+]Cl962.3958.4± 1.2kJ/mol49.4787 ±
0.0012
59000-00-9*0
Bromo hypobromite BrOBr120.3103.8± 1.2kJ/mol175.8074 ±
0.0020
21308-80-5*0
Chloromethylene [CH]Cl346.14346.44± 0.89kJ/mol48.4713 ±
0.0012
2108-20-5*1
1,2-Dichloroethane C(Cl)CCl-165.73± 0.56kJ/mol98.9586 ±
0.0024
107-06-2*500
1,1-Dichloroethane CC(Cl)Cl-163.91± 0.48kJ/mol98.9586 ±
0.0024
75-34-3*500
Diazenide N#N.[H-]175.7176.7± 1.6kJ/mol29.02197 ±
0.00016
71004-29-0*100
Pentachloroethane C(C(Cl)(Cl)Cl)(Cl)Cl-151.3-157.2± 1.9kJ/mol202.2928 ±
0.0048
76-01-7*0
Carbide [C]=[C-]504.70511.27± 0.39kJ/mol24.0219 ±
0.0016
12595-78-7*0
Hydrogen difluoride F.[F]-187.4-187.1± 1.6kJ/mol39.004746 ±
0.000070
12528-21-1*2
Chloroform C(Cl)(Cl)Cl-133.80± 0.52kJ/mol119.3767 ±
0.0028
67-66-3*590
Chlorodibromomethane C(Cl)(Br)Br18.6-0.2± 3.4kJ/mol208.2793 ±
0.0023
124-48-1*0
Tribromofluoromethane C(Br)(Br)(Br)F-107.4-131.4± 1.6kJ/mol270.7211 ±
0.0031
353-54-8*0
Tribromochloromethane C(Br)(Br)(Br)Cl77.154.2± 1.6kJ/mol287.1754 ±
0.0032
594-15-0*0
Trifluoromethide [C-](F)(F)F-637.7-639.6± 1.8kJ/mol69.00646 ±
0.00080
54128-17-5*0
Bromochloromethane C(Cl)Br-28.7-42.7± 1.3kJ/mol129.3833 ±
0.0016
74-97-5*0
Diiodide I[I-]-178.13-180.72± 0.48kJ/mol253.809489 ±
0.000060
12190-71-5*0
Dioxygenyl ion monohydrate O.O=[O+]828.5821.4± 2.1kJ/mol50.01353 ±
0.00091
11083-61-7*0
Fluorochlorate [Cl-]F-256.03-255.43± 0.81kJ/mol54.45165 ±
0.00090
12272-56-9*0
Fluoromethylene [CH]F148.38148.66± 0.43kJ/mol32.01704 ±
0.00080
13453-52-6*0
Peroxychlorite O=ClO[O-]-34.3-34.3± 2.0kJ/mol83.4514 ±
0.0013
852472-63-0*0
Iodine atom [I]107.157106.757± 0.0021kJ/mol126.904470 ±
0.000030
14362-44-8*1
Ethyl iodide CCI8.71-7.17± 0.49kJ/mol155.9656 ±
0.0016
75-03-6*0
cis-1,2-Difluoroethene F/C=C\F-302.98-309.75± 0.99kJ/mol64.0341 ±
0.0016
1630-77-9*0
1,2-Dibromoacetylene BrC#CBr332.4321.5± 2.3kJ/mol183.8294 ±
0.0026
624-61-3*0
2-Cyclopropyn-1-ylidene C1=C=C=1898.9905.8± 1.6kJ/mol36.0321 ±
0.0024
102508-15-6*1
Fluoro(fluorooxy)methylene F[C]OF-97.5-95.7± 1.6kJ/mol66.00691 ±
0.00085
479587-30-9*101
1-Chloro ozone ClOO[O]226.3223.1± 2.3kJ/mol83.4509 ±
0.0013
141801-66-3*101
Fluorooxomethylium F[C+]=O724.9724.5± 1.2kJ/mol47.00795 ±
0.00085
38264-00-5*0
Fluoroisoformyl [C]OF-37.8-32.4± 1.6kJ/mol47.00850 ±
0.00085
*1871-24-5*0
2-Cyclopropyn-1-ylium-1-yl [C+]1=C=C=11944.71952.6± 1.9kJ/mol36.0316 ±
0.0024
154702-35-9*0
Benzene cation c1ccc(cc1)[H+]992.50976.03± 0.23kJ/mol78.1113 ±
0.0048
34504-50-2*0
Triiodide I[I-]I-254.3-257.5± 3.4kJ/mol380.713959 ±
0.000090
14900-04-0*0
Hydrogen fluoride F-321.15± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*822
2-Oxopropylium CC(=[O+])[CH2]784.4770.6± 1.8kJ/mol57.0707 ±
0.0024
54088-52-7*0
1,2-Dibromoethane C(Br)CBr-11.7-38.6± 1.2kJ/mol187.8612 ±
0.0026
106-93-4*0
2-Butanone CCC(=O)C-216.99-238.44± 0.92kJ/mol72.1057 ±
0.0033
78-93-3*0
2-Propynal C#CC=O135.5133.2± 1.4kJ/mol54.0474 ±
0.0024
624-67-9*0
Methyleneoxonium cation [CH2+].O827.7818.3± 1.7kJ/mol32.04131 ±
0.00090
*177788-17-9*0
Hydroxymethanide [CH2-]O9.42.8± 1.7kJ/mol31.03447 ±
0.00088
55830-71-2*0
Formaldehyde C=O-105.379-109.218± 0.098kJ/mol30.02598 ±
0.00087
50-00-0*2
Dioxofluorine [O]F[O]524.0523.2± 1.1kJ/mol50.99720 ±
0.00060
175861-93-5*0
Hydroxymethylene cation [CH+]O986.3982.7± 1.6kJ/mol30.02543 ±
0.00087
135395-06-1*2
Hydroxymethylene cation [CH+]O1482.11479.4± 1.9kJ/mol30.02543 ±
0.00087
135395-06-1*3
Hydroxymethylene anion [CH-]O160.2157.5± 1.7kJ/mol30.02653 ±
0.00087
207914-87-2*2
Hydroxymethylene anion [CH-]O334.0334.8± 2.1kJ/mol30.02653 ±
0.00087
207914-87-2*3
Aminyliumyl [NH+]1659.041659.96± 0.24kJ/mol15.014131 ±
0.000099
19067-62-0*0
Aquacarbon [C].O467.6465.5± 1.9kJ/mol30.02598 ±
0.00087
81434-73-3*102
Aquacarbon cation [C+].O1196.11193.0± 1.7kJ/mol30.02543 ±
0.00087
*81434-73-3*0
Hydroxyamidogen anion [NH-]O90.884.9± 2.8kJ/mol32.02257 ±
0.00034
*66097-71-0*0
Chlorine difluoride [Cl]FF22.523.8± 1.9kJ/mol73.44951 ±
0.00090
91483-78-2*0
Hydrogen chloride Cl-166.683± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*841
Ethane cation C[CH3+]1043.191029.18± 0.60kJ/mol30.0685 ±
0.0017
34488-65-8*0
Carbonic acid OC(=O)O-602.76-612.07± 0.75kJ/mol62.0248 ±
0.0012
463-79-6*0
Peroxyformic acid C(=O)OO-265.3-273.1± 1.5kJ/mol62.0248 ±
0.0012
107-32-4*3
Hydrogen bromide Br-120.48± 0.15kJ/mol80.9119 ±
0.0010
10035-10-6*834
Fluorodioxidenium FO[O+]1221.91219.5± 2.0kJ/mol50.99665 ±
0.00060
139584-95-5*0
1-Methylethylidene C[C]C327.0313.9± 1.6kJ/mol42.0797 ±
0.0024
40852-89-9*1
Xenon cation [Xe+]1170.3541170.354± 0.0062kJ/mol131.2895 ±
0.0200
24203-25-6*0
Hydrogen bromide Br-120.78± 0.15kJ/mol80.9119 ±
0.0010
10035-10-6*844
Propynylidene cation C#C[CH+]1410.81413.4± 1.3kJ/mol38.0474 ±
0.0024
75123-91-0*0
Propynylidene [CH]=C=[CH]597.4599.2± 1.1kJ/mol38.0480 ±
0.0024
67152-18-5*4
Propadienylidenide C=C=[C-]381.14382.04± 0.42kJ/mol38.0485 ±
0.0024
109292-49-1*0
1,2-Propadien-1-ylium-1-yl C=C=[C+]1561.71562.9± 1.4kJ/mol38.0474 ±
0.0024
110714-00-6*0
Nitric acid O[N+](=O)[O-]-206.32± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*839
Nitric acid O[N+](=O)[O-]-179.02-173.30± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*500
Azidonitrene [N]=NN=[N]660.8657.6± 1.6kJ/mol56.02696 ±
0.00028
147363-92-6*1
Ethylene anion C=[CH2-]232.0224.4± 2.0kJ/mol28.0537 ±
0.0016
34527-91-8*1
Dihydrogen fluoride anion F.[H-]-61.9-60.5± 3.2kJ/mol21.01483 ±
0.00014
117339-92-1*2
Chlorine difluoride anion [Cl-](F)F-504.9-505.8± 1.9kJ/mol73.45005 ±
0.00090
16892-05-0*0
n-Pentane CCCCC-156.05-173.02± 0.31kJ/mol72.1488 ±
0.0041
109-66-0*500
iso-Pentane CCC(C)C-178.44± 0.43kJ/mol72.1488 ±
0.0041
78-78-4*500
neo-Pentane CC(C)(C)C-189.90± 0.40kJ/mol72.1488 ±
0.0041
463-82-1*500
Cyclopentane C1CCCC1-105.22± 0.41kJ/mol70.1329 ±
0.0041
287-92-3*590
1,5-Hexadiene C=CCCC=C108.3883.79± 0.40kJ/mol82.1436 ±
0.0049
592-42-7*0
Perchloryloxy O=Cl(=O)(=O)[O]248.6241.0± 1.8kJ/mol99.4503 ±
0.0015
12133-63-0*0
Hydrogen fluoride F-302.39± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*590
Ethoxy CC[O]1.48-11.94± 0.48kJ/mol45.0605 ±
0.0017
2154-50-9*0
Hydrogen fluoride F-321.02± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*901
Nitrosyl fluoride FN=O-85.81-88.18± 0.93kJ/mol49.00454 ±
0.00031
7789-25-5*0
Dihydrogen cation [H][H+]1488.3641488.480± 0.000kJ/mol2.01533 ±
0.00014
12184-90-6*0
Hydrogen chloride Cl-165.557± 0.026kJ/mol36.46064 ±
0.00090
7647-01-0*825
Dicarbon monoxide cation [C+]=C=O1434.01439.1± 2.2kJ/mol40.0203 ±
0.0016
12287-08-0*0
Nitrosyl nitrate O=N(O1)ON1=O70.662.3± 1.8kJ/mol92.0111 ±
0.0012
*15969-55-8*0
Hydrogen fluoride F-320.87± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*815
(E)-Diazene anion [H]/N=[N-]/[H]265.5258.7± 2.0kJ/mol30.02991 ±
0.00020
*59952-06-6*0
C=O-C cation [C]=[O+][C]1813.01817.0± 2.4kJ/mol40.0203 ±
0.0016
83483-98-1*2
Azanylium [NH3+]944.272937.317± 0.030kJ/mol17.03001 ±
0.00022
19496-55-0*0
Tetraoxidanyl OOO[O]2.00.2± 3.0kJ/mol65.0055 ±
0.0012
69696-93-1*100
Oxirene anion C1=C[O-]1288.2285.3± 2.3kJ/mol42.0372 ±
0.0016
*157-18-6*0
Oxoethylidene [CH]C=O261.2258.4± 1.6kJ/mol42.0367 ±
0.0016
39920-84-8*1
Acetylene anion C#[CH-]356.8356.7± 1.9kJ/mol26.0378 ±
0.0016
50443-89-5*1
Trifluoride ion FF[F-]-348.9-349.7± 2.6kJ/mol56.9957582 ±
0.0000015
25730-99-8*0
(Z)-Diazene cation [H]/N=[N+]\[H]1157.01150.1± 1.3kJ/mol30.02881 ±
0.00020
86631-37-0*0
Formic acid anion [CH-](=O)O-241.2-247.0± 1.9kJ/mol46.0259 ±
0.0010
19066-82-1*2
Fluorodioxidanide [F-]O[O]-256.9-256.1± 1.9kJ/mol50.99775 ±
0.00060
23553-17-5*0
Dioxirane cation C1[O+]O11050.81043.2± 2.0kJ/mol46.0248 ±
0.0010
232262-10-1*0
Dioxymethyl cation C=[O+][O]1074.91068.6± 1.8kJ/mol46.0248 ±
0.0010
232262-11-2*0
Hydroxyaminylium [NH+]O1048.61041.4± 2.6kJ/mol32.02147 ±
0.00034
66097-71-0*2
Dioxymethylene [CH]O[O]341.8339.8± 3.0kJ/mol45.0174 ±
0.0010
438586-67-5*2
OH-CO vdW complex [O][H].[C]#O-80.26-76.54± 0.88kJ/mol45.0174 ±
0.0010
*2564-85-4*100
CO-HO vdW complex [O][H].O#[C]-77.4-73.2± 1.3kJ/mol45.0174 ±
0.0010
*2564-84-3*100
Dioxaziridinyl cation [N+]1OO11365.91363.3± 1.7kJ/mol46.00499 ±
0.00060
*66252-29-7*0
Dioxaziridinyl anion [N-]1OO1295.9293.4± 1.6kJ/mol46.00609 ±
0.00060
66252-31-1*0
Peroxyimidogen cation [N]O[O+]1409.61406.8± 1.9kJ/mol46.00499 ±
0.00060
*60488-32-6*0
Cyanato cation N#C[O+]1261.561262.06± 0.59kJ/mol42.01629 ±
0.00086
17247-99-3*0
Nitrosomethyliumylidene [C+]N=O1509.91510.9± 1.9kJ/mol42.01629 ±
0.00086
67197-19-7*0
Fulminate [C-]#[N+][O-]59.259.5± 1.9kJ/mol42.01739 ±
0.00086
28269-67-2*0
Peroxyimidogen anion [N]O[O-]165.1162.7± 1.7kJ/mol46.00609 ±
0.00060
60488-31-5*0
Dihydrogen fluoride F.H-55.9-54.9± 1.6kJ/mol21.01428 ±
0.00014
12592-22-2*1
Acetic acid CC(=O)O-484.10-483.68± 0.18kJ/mol60.0520 ±
0.0017
64-19-7*500
Acetic acid CC(=O)O-484.71± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*825
Acetic acid CC(=O)O-484.90± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*835
Deuterium atom cation [2H+]1532.2101534.123± 0.000kJ/mol2.01355319809 ±
0.00000000040
14464-47-2*0
1-Hydrazinylium-1-yl [N+]N1143.41136.4± 1.4kJ/mol30.02881 ±
0.00020
63986-30-1*0
Hydrogen fluoride F-321.17± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*823
Nirous oxide cation N#[N+]=O1329.671326.78± 0.12kJ/mol44.01233 ±
0.00033
12269-46-4*0
Oxadiazirine anion [N-]1=NO195.195.5± 2.9kJ/mol44.01343 ±
0.00033
350586-31-1*0
Glyoxal O=CC=O-188.52-193.96± 0.69kJ/mol58.0361 ±
0.0017
107-22-2*2
Glyoxal O=CC=O-206.91-212.47± 0.52kJ/mol58.0361 ±
0.0017
107-22-2*0
Dimethylaminylium C[N+]C1040.01024.6± 1.8kJ/mol44.0752 ±
0.0017
49784-85-2*0
Diisocyanogen [C-]#[N+][N+]#[C-]610.7613.0± 1.7kJ/mol52.0349 ±
0.0016
78800-21-2*0
Methylimidogen C[N]323.1315.4± 1.7kJ/mol29.04126 ±
0.00083
27770-42-9*0
Fluoroniumyl ion [FH+]1275.5581275.790± 0.050kJ/mol20.005795 ±
0.000070
12381-92-9*0
Dichloromethylene [C](Cl)Cl313.62314.82± 0.90kJ/mol82.9161 ±
0.0020
1605-72-7*1
Dihydrooxooxygen cation [OH2][O+]995.0988.3± 1.6kJ/mol34.01413 ±
0.00062
177329-59-8*0
Chloromethyliumyl [CH+]Cl1207.41207.6± 2.0kJ/mol48.4708 ±
0.0012
89877-51-0*0
Chloromethylene anion [CH-]Cl203.44204.25± 0.94kJ/mol48.4719 ±
0.0012
75466-08-9*0
Trioxodinitrate anion O=N-[N](=O)[O-]-104.3-107.5± 1.9kJ/mol76.01223 ±
0.00091
194856-62-7*100
Chlorohydroxymethyl [CH](Cl)O-46.2-51.8± 2.0kJ/mol65.4787 ±
0.0012
147139-06-8*2
Hydrofluorate ion [FH-]-75.6-75.1± 1.8kJ/mol20.006892 ±
0.000070
37249-79-9*0
1,1,2-Trichloroethane C(Cl)C(Cl)Cl-188.6± 1.4kJ/mol133.4033 ±
0.0031
79-00-5*500
1,1,1,2-Tetrachloroethane C(Cl)C(Cl)(Cl)Cl-193.5± 1.1kJ/mol167.8481 ±
0.0039
630-20-6*500
Ethynylene cation [C]=[C+]1965.191971.78± 0.50kJ/mol24.0209 ±
0.0016
12595-79-8*0
Hexachloroethane C(C(Cl)(Cl)Cl)(Cl)(Cl)Cl-216.5± 2.8kJ/mol236.7376 ±
0.0056
67-72-1*500
Diazenide N#N.[H-]347.5344.6± 1.6kJ/mol29.02197 ±
0.00016
71004-29-0*1
Trioxidanyl OO[O]26.3023.02± 0.19kJ/mol49.00614 ±
0.00090
12500-78-6*2
trans-1,2-Dichloroethene C(\Cl)=C/Cl5.28-0.14± 0.54kJ/mol96.9427 ±
0.0024
156-60-5*0
Trioxidaniumyl O[O+]O935.2926.1± 1.6kJ/mol50.01353 ±
0.00091
161321-37-5*3
Iminomethyl anion [CH-]=N252.6248.9± 1.8kJ/mol28.03387 ±
0.00082
90623-30-6*2
Nitrous acid N(=O)O-73.005-78.662± 0.079kJ/mol47.01348 ±
0.00061
7782-77-6*0
Hydrogen cyanide cation [CH+]#N1442.521442.05± 0.20kJ/mol27.02483 ±
0.00081
12601-62-6*0
Fluorochlorobromomethane C(F)(Cl)Br-219.3-231.7± 5.5kJ/mol147.3737 ±
0.0016
593-98-6*0
Hydroxylamine NO-15.5-26.0± 1.4kJ/mol33.02996 ±
0.00037
7803-49-8*2
Fluoromethyliumyl [CH+]F1116.61116.9± 1.7kJ/mol32.01649 ±
0.00080
89877-52-1*0
Fluoromethylene anion [CH-]F95.9296.45± 0.61kJ/mol32.01759 ±
0.00080
71267-42-0*0
Chlorine oxide peroxide O=ClO[O]226.5227.4± 2.5kJ/mol83.4509 ±
0.0013
141801-67-4*100
Hydroxylamine cation N[OH+]857.6847.8± 1.6kJ/mol33.02941 ±
0.00037
62675-55-2*0
Polytetrafluoroethylene FC(C(F)(F)[*:1])(F)[*:2]-829.56± 0.58kJ/mol100.0150 ±
0.0016
9002-84-0*591
Bifluoride F[H][F-]-705.22-709.07± 0.36kJ/mol39.005295 ±
0.000070
18130-74-0*0
trans-1,2-Difluoroethene F/C=C/F-299.75-306.18± 0.98kJ/mol64.0341 ±
0.0016
1630-78-0*0
Formyl fluoride cation F[CH+]=O816.6813.3± 1.3kJ/mol48.01589 ±
0.00086
99766-68-4*0
Formyl fluoride F[C-]=O-405.1-403.7± 1.6kJ/mol47.00905 ±
0.00085
62227-71-8*0
Fluoroisoformyl cation [C+]OF1347.41349.5± 1.9kJ/mol47.00795 ±
0.00085
*1871-25-6*0
Hydrogen peroxide cation O[OH+]931.41924.55± 0.94kJ/mol34.01413 ±
0.00062
12325-10-9*2
o-Benzyne cation C1=CC#CC=[CH+]11393.81385.8± 1.7kJ/mol76.0954 ±
0.0048
70220-84-7*0
Nitrogen hydride oxide [NH3+][O-]71.159.9± 1.5kJ/mol33.02996 ±
0.00037
38544-48-8*0
m-Benzyne cation c1[c]ccc[c+]11365.51357.0± 1.9kJ/mol76.0954 ±
0.0048
121058-08-0*0
Aminooxy cation N[O+]946.05938.92± 0.80kJ/mol32.02147 ±
0.00034
*51375-41-8*0
p-Benzyne c1c[c]cc[c]1603.5594.1± 1.2kJ/mol76.0960 ±
0.0048
3355-34-8*1
1-Chloro ozone anion ClOO[O-]-108.9-111.4± 2.2kJ/mol83.4514 ±
0.0013
224299-15-4*3
Benzylium c1ccc(cc1)[CH2+]929.34909.84± 0.61kJ/mol91.1299 ±
0.0056
6711-19-9*0
1,3-Cycloheptadiene C1CC=CC=CC1123.2494.13± 0.78kJ/mol94.1543 ±
0.0056
4054-38-0*1
Tropylium [CH+]1C=CC=CC=C1897.9878.1± 1.1kJ/mol91.1299 ±
0.0056
26811-28-9*0
Trioxidanylium OO[O+]1085.31079.1± 1.5kJ/mol49.00559 ±
0.00090
74241-49-9*2
Fluorosyl fluoride anion FF[O-]-147.2-146.9± 3.0kJ/mol53.99675 ±
0.00030
*86825-57-2*2
1,3-Butadiyne-1,4-diyl [C]#CC#[C]1052.471062.45± 0.68kJ/mol48.0428 ±
0.0032
78015-07-3*0
Acetone enol C=C(O)C-147.2-164.4± 1.3kJ/mol58.0791 ±
0.0025
29456-04-0*2
Perchlorate O=Cl(=O)(=O)[O-]-263.2-272.1± 2.2kJ/mol99.4508 ±
0.0015
14797-73-0*0
1-Chloro ozone anion ClOO[O-]-66.8-68.7± 2.1kJ/mol83.4514 ±
0.0013
224299-15-4*1
cis-1,2-Dibromoethene C(\Br)=C\Br120.9100.4± 2.1kJ/mol185.8453 ±
0.0026
590-11-4*0
Cyanomethanide [CH2-]C#N114.1111.2± 1.1kJ/mol40.0446 ±
0.0016
21438-99-3*0
1,1-Dibromoethane CC(Br)Br-5.4-32.4± 1.8kJ/mol187.8612 ±
0.0026
557-91-5*0
Krypton hydride cation [Kr+][H]1106.331104.55± 0.69kJ/mol84.8074 ±
0.1000
37276-90-7*0
Cycloprop-2-enylium C1=C[CH+]11080.61075.5± 1.4kJ/mol39.0554 ±
0.0024
26810-74-2*0
2-Propenylidyne anion C=C[C-]464.5460.7± 1.8kJ/mol39.0565 ±
0.0024
120126-89-8*0
2-Propen-3-yliumylidene [CH]C=[CH+]1494.71491.7± 1.7kJ/mol39.0554 ±
0.0024
84654-86-4*0
2-Propenylidene anion [CH]C=[CH-]536.0532.6± 1.8kJ/mol39.0565 ±
0.0024
98705-30-7*0
Hypochlorous acid anion O[Cl-]198.7198.4± 2.5kJ/mol52.46059 ±
0.00095
34524-94-2*0
Tribromine BrBrBr155.9134.2± 3.2kJ/mol239.7120 ±
0.0030
11094-39-6*0
Propynylidene [CH]=C=[CH]543.41546.40± 0.64kJ/mol38.0480 ±
0.0024
67152-18-5*0
1-Cyclopropene-1,2-diyl C1[C]=[C]1791.1790.6± 1.5kJ/mol38.0480 ±
0.0024
202744-75-0*0
Methanol anion [CH3-]O-89.1-99.8± 2.8kJ/mol32.04241 ±
0.00090
68474-04-4*0
Cyclopropenyliumdiyl [CH+]1C#C11692.11695.0± 1.9kJ/mol37.0395 ±
0.0024
127476-05-5*0
Cyclopropynyl anion [CH-]1C#C1518.0521.0± 1.1kJ/mol37.0406 ±
0.0024
136861-42-2*0
Bromine atom [Br]117.914111.851± 0.056kJ/mol79.90400 ±
0.00100
10097-32-2*1
Nitrate O=[N+]([O-])[O-]-206.64± 0.18kJ/mol62.00549 ±
0.00090
14797-55-8*800
Ethylene anion C=[CH2-]231.6225.5± 2.0kJ/mol28.0537 ±
0.0016
34527-91-8*2
Trifluorine cation FF[F+]1529.51527.4± 2.3kJ/mol56.9946610 ±
0.0000015
64710-22-1*0
Tribromide Br[Br-]Br-287.4-308.4± 1.9kJ/mol239.7125 ±
0.0030
14522-80-6*0
Cyclopentene C1CC=CC14.38± 0.42kJ/mol68.1170 ±
0.0040
142-29-0*590
n-Hexane CCCCCC-179.98-198.64± 0.34kJ/mol86.1754 ±
0.0049
110-54-3*500
Chlorine difluoride anion [Cl-]FF-319.0-319.1± 2.2kJ/mol73.45005 ±
0.00090
91419-41-9*0
1-Ethylium-1-yl [CH+]C1182.11174.8± 3.2kJ/mol28.0526 ±
0.0016
85944-79-2*0
Ethylidene anion [CH-]C325.8318.5± 1.9kJ/mol28.0537 ±
0.0016
35829-99-3*0
1-Hydroxyethanide C[CH-]O-20.0-33.4± 2.9kJ/mol45.0610 ±
0.0017
88032-18-2*0
Ozone cation O=[O+]=O1352.8701350.531± 0.041kJ/mol47.99765 ±
0.00090
12596-82-6*0
Chlorosyl chloride cation ClCl[O+]1132.61130.8± 2.0kJ/mol86.9043 ±
0.0018
*86825-56-1*0
Formaldehyde anion C=[O-]-26.7-28.3± 2.0kJ/mol30.02653 ±
0.00087
27837-46-3*0
Hydrogen fluoride F-321.16± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*891
Hydroxyimidogen anion [N-]O229.9227.4± 2.3kJ/mol31.01463 ±
0.00032
*35337-59-8*0
Chlorosyl chloride anion ClCl[O-]-185.4-184.7± 2.3kJ/mol86.9053 ±
0.0018
*86825-55-0*0
Acetaldehyde anion CC=[O-]-62.0-72.2± 2.1kJ/mol44.0531 ±
0.0017
60427-04-5*0
Diazenium N[NH+]968.59957.33± 0.77kJ/mol31.03675 ±
0.00025
37369-93-0*0
Formaldehyde C=O196.011192.681± 0.098kJ/mol30.02598 ±
0.00087
50-00-0*1
Ketene cation C=C=[O+]882.23879.06± 0.12kJ/mol42.0361 ±
0.0016
64999-16-2*0
Ketene anion C=C=[O-]-16.0-19.1± 2.2kJ/mol42.0372 ±
0.0016
56391-79-8*0
Chloryl ion O=[Cl+]=O1100.151097.49± 0.52kJ/mol67.4510 ±
0.0011
25052-55-5*0
Oxoethenylium [CH+]=C=O1139.71142.5± 2.2kJ/mol41.0282 ±
0.0016
92056-63-8*0
Hydrogen bromide Br-120.68± 0.15kJ/mol80.9119 ±
0.0010
10035-10-6*841
Hydroperoxyimidogen OO[N]103.399.8± 2.4kJ/mol47.01348 ±
0.00061
877456-58-1*1
Dioxygen O=O-0.000-0.000± 0.000kJ/mol31.99880 ±
0.00060
7782-44-7*1
Tetranitrogen cation [N]=NN=[N+]1392.81392.5± 1.5kJ/mol56.02641 ±
0.00028
12185-04-5*0
Oxiranylidene C1[C]O1456.2452.1± 2.2kJ/mol42.0367 ±
0.0016
50983-85-2*1
Oxiranylidene cation C1[C+]O11165.41161.9± 2.5kJ/mol42.0361 ±
0.0016
*50983-85-2*0
Oxiranylidene anion C1[C-]O1236.4232.4± 2.3kJ/mol42.0372 ±
0.0016
*50983-86-3*0
Hydrogen chloride Cl-166.712± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*951
Methyl hydroperoxide cation C[O+]O833.4820.2± 2.2kJ/mol48.0407 ±
0.0010
112465-88-0*0
Methoxyoxoniumylidene CO[O+]1012.81004.6± 2.0kJ/mol47.0328 ±
0.0010
86475-50-5*0
Acetylene anion C#[CH-]380.1380.3± 1.9kJ/mol26.0378 ±
0.0016
50443-89-5*2
Trioxidanylium OO[O+]1070.61064.3± 1.4kJ/mol49.00559 ±
0.00090
74241-49-9*0
Dioxirane anion C1[O-]O1-170.4-177.2± 3.9kJ/mol46.0259 ±
0.0010
*157-26-6*0
Dioxymethyl anion C=[O][O-]54.949.8± 1.4kJ/mol46.0259 ±
0.0010
93207-29-5*0
Hydrogen difluoride cation [F+]F[H]1174.31171.3± 1.5kJ/mol39.004198 ±
0.000070
*126950-54-7*2
Hydrogen chloride Cl-165.946± 0.026kJ/mol36.46064 ±
0.00090
7647-01-0*907
Carbon atom [C]711.399716.885± 0.047kJ/mol12.01070 ±
0.00080
7440-44-0*1
Carbon atom [C]833.330838.477± 0.047kJ/mol12.01070 ±
0.00080
7440-44-0*2
Deuterium hydride cation [H][2H+]1490.4981490.587± 0.000kJ/mol3.021493 ±
0.000070
12181-16-7*0
Imidogen anion [NH-]322.63322.68± 0.17kJ/mol15.015229 ±
0.000099
23841-33-0*0
H-CO2 vdW complex [H].O=C=O-178.3-177.5± 2.1kJ/mol45.0174 ±
0.0010
*2564-83-2*100
2-Chloro ozone anion ClO([O])[O-]-103.4-105.6± 3.2kJ/mol83.4514 ±
0.0013
*141801-67-4*0
2-Propanol CC(O)C-306.25-319.06± 0.38kJ/mol60.0950 ±
0.0025
67-63-0*500
1-Propanol CCCO-290.54-302.72± 0.24kJ/mol60.0950 ±
0.0025
71-23-8*500
Ammonium radical [NH4]190.01179.43± 0.43kJ/mol18.03850 ±
0.00029
92075-50-8*0
Methylammoniumyl C[NH2+]865.42851.48± 0.33kJ/mol31.05659 ±
0.00088
34516-31-9*0
Methylamine anion C[NH2-]83.969.0± 2.8kJ/mol31.05769 ±
0.00088
81096-79-9*0
Hydrooxonitrate [NH-]=O78.6075.68± 0.99kJ/mol31.01463 ±
0.00032
66057-02-1*0
Cyanogen bromide anion BrC#[N-]57.954.2± 3.8kJ/mol105.9220 ±
0.0013
54092-05-6*0
Oxazirinyl cation [C+]1=NO11565.41566.1± 2.3kJ/mol42.01629 ±
0.00086
*228850-18-8*0
Oxazirinyl anion [C-]1=NO1448.0448.8± 2.4kJ/mol42.01739 ±
0.00086
28269-68-3*0
1-Methoxyethenol C=C(O)OC-284.7-304.1± 1.7kJ/mol74.0785 ±
0.0025
4453-91-2*1
Chloroniumyl ion [ClH+]1137.7971137.731± 0.0051kJ/mol36.46009 ±
0.00090
12258-94-5*0
Oxobromonium Br[O+]1139.31131.5± 1.5kJ/mol95.9029 ±
0.0010
142315-39-7*0
Peroxychloric acid O=Cl(=O)OO77.569.3± 2.6kJ/mol100.4582 ±
0.0015
177778-91-5*0
Aminomethyl anion [CH2-]N209.3199.0± 2.1kJ/mol30.04975 ±
0.00085
74215-21-7*0
Chloryl chloride ClCl([O])[O]126.1122.1± 1.7kJ/mol102.9042 ±
0.0019
117489-73-3*0
Ethyl formate C(=O)OCC-425.8± 1.2kJ/mol74.0785 ±
0.0025
109-94-4*500
Nirous oxide anion [N-]=[N]=O99.296.7± 1.9kJ/mol44.01343 ±
0.00033
12274-12-3*0
Bromine dioxide [O]Br[O]167.1157.5± 3.0kJ/mol111.9028 ±
0.0012
21255-83-4*0
Hydrogen fluoride F-321.05± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*903
Methylaminilium C[NH+]1134.81125.0± 2.1kJ/mol30.04865 ±
0.00085
49784-84-1*0
Chlorine difluoride cation [Cl+]FF1346.31344.9± 2.1kJ/mol73.44896 ±
0.00090
86825-59-4*0
Methanimine cation C=[NH+]1056.01049.1± 1.8kJ/mol29.04071 ±
0.00083
65130-65-6*0
Propionic acid CCC(=O)O-415.9-433.4± 1.4kJ/mol74.0785 ±
0.0025
79-09-4*2
Hydrogen chloride Cl-165.979± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*829
Methanimine anion C=[NH-]224.3217.1± 2.2kJ/mol29.04181 ±
0.00083
127593-73-1*0
Oxalic acid C(=O)(C(=O)O)O-710.8-721.4± 2.1kJ/mol90.0349 ±
0.0020
144-62-7*0
Aminomethyliumyl [CH][NH2+]1039.51031.8± 2.3kJ/mol29.04071 ±
0.00083
89302-94-3*0
Hydrogen chloride Cl-166.637± 0.025kJ/mol36.46064 ±
0.00090
7647-01-0*840
Cyanogen cation N#C[C+]#N1598.371600.59± 0.44kJ/mol52.0343 ±
0.0016
37354-81-7*0
Isocyanogen [C-]#[N+]C#N411.0413.3± 1.6kJ/mol52.0349 ±
0.0016
83951-85-3*0
Diazoethenylidene [N-]=[N+]=C=[C]658.7661.3± 1.8kJ/mol52.0349 ±
0.0016
130760-10-0*0
Aminomethylene anion [CH][NH2-]353.0346.1± 2.3kJ/mol29.04181 ±
0.00083
207914-86-1*0
Isocyanomethyliumylidene [C][N+]#[C]1615.71621.2± 2.0kJ/mol38.0276 ±
0.0016
78271-45-1*0
Isocyanomethylidyne anion [C][N]#[C-]479.3483.0± 2.0kJ/mol38.0287 ±
0.0016
*53590-27-5*0
Cyanomethyliumylidene [C+]C#N1719.41724.8± 2.2kJ/mol38.0276 ±
0.0016
76619-90-4*0
Cyanomethylidyne anion [C-]C#N410.2413.9± 2.2kJ/mol38.0287 ±
0.0016
12373-35-2*0
2,3-didehydro-1H-azirin-1-yl [N]1C#C1720.5724.5± 2.1kJ/mol38.0281 ±
0.0016
439586-06-8*0
Fluorosyl fluoride anion FF[O-]-56.6-55.7± 2.4kJ/mol53.99675 ±
0.00030
*86825-57-2*1
Cyanoaminylium [NH+]C#N1363.21360.1± 2.5kJ/mol41.03157 ±
0.00082
205443-18-1*0
Cyanoamidogen anion [NH-]C#N70.867.8± 1.4kJ/mol41.03267 ±
0.00082
67131-47-9*0
Cyanamide NC#N140.8134.5± 1.5kJ/mol42.04006 ±
0.00082
420-04-2*0
Diazomethylene [C]=N=[N]579.3580.0± 3.8kJ/mol40.02418 ±
0.00081
2468-81-7*0
Trichloromethylium [C+](Cl)(Cl)Cl854.29852.77± 0.93kJ/mol118.3683 ±
0.0028
27130-34-3*0
Nitric acid cation O[N+](=O)[O]1029.131020.07± 0.69kJ/mol63.01233 ±
0.00091
272109-63-4*0
Dichloromethyliumyl [C+](Cl)Cl1121.61122.6± 1.8kJ/mol82.9156 ±
0.0020
55945-51-2*0
Methylimidogen anion C[N-]321.1313.5± 1.8kJ/mol29.04181 ±
0.00083
82539-34-2*0
Methyleneaminylium C=[N+]1456.61453.0± 2.2kJ/mol28.03277 ±
0.00082
53518-13-1*1
Peroxyhypochlorite ClO[O-]-249.22-248.20± 0.37kJ/mol67.4520 ±
0.0011
224299-14-3*0
Fluorosyl fluoride cation FF[O+]1413.01413.4± 3.5kJ/mol53.99566 ±
0.00030
*86825-50-5*1
Hydrogen chloride Cl-165.546± 0.027kJ/mol36.46064 ±
0.00090
7647-01-0*953
Nitrosyl nitrate O=NO[N+](=O)[O-]48.340.3± 1.8kJ/mol92.0111 ±
0.0012
15969-55-8*1
iso-Proplylide C[CH-]C128.6110.2± 1.6kJ/mol43.0882 ±
0.0024
25012-80-0*0
Dibromine BrBr-2.16± 0.20kJ/mol159.8080 ±
0.0020
7726-95-6*800
Hydrogen fluoride F-321.05± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*888
Hypobromous acid cation O[Br+]974.89964.27± 0.53kJ/mol96.9108 ±
0.0010
154804-02-1*0
Fluorine atom cation [F+]1758.3031760.601± 0.048kJ/mol18.99785462 ±
0.00000050
14701-13-4*0
Chloromethane cation C[Cl+]1014.671007.90± 0.20kJ/mol50.4867 ±
0.0012
12538-71-5*0
Aminomethyliumylidene [C+]N1168.31165.1± 2.2kJ/mol28.03277 ±
0.00082
86784-42-1*0
Bromofluoromethane C(F)Br-198.0-212.4± 5.5kJ/mol112.9290 ±
0.0013
373-52-4*0
1,2-Propadien-1-yl-3-ylidene anion [C]=C=[C-]622.0629.4± 1.3kJ/mol36.0326 ±
0.0024
109292-47-9*0
Fluorodibromomethane C(F)(Br)Br-160.0-179.5± 5.5kJ/mol191.8250 ±
0.0022
1868-53-7*0
Difluorochlorobromomethane C(F)(F)(Cl)Br-431.5-442.2± 5.5kJ/mol165.3642 ±
0.0016
353-59-3*0
Dichlorofluorobromomethane C(Cl)(Cl)(F)Br-230.2-240.0± 5.5kJ/mol181.8185 ±
0.0022
353-58-2*0
Dibromofluorochloromethane C(Br)(Br)(F)Cl-170.8-187.4± 5.5kJ/mol226.2698 ±
0.0023
353-55-9*0
Krypton cation [Kr+]1350.7561350.756± 0.000kJ/mol83.7995 ±
0.1000
16915-28-9*0
Water O-285.832± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*589
1,2-Difluoroacetylene cation F[C+]#CF1081.71084.5± 1.3kJ/mol62.0177 ±
0.0016
268566-70-7*0
Difluorophosgene cation C(F)(F)=[O+]653.41650.65± 0.51kJ/mol66.00636 ±
0.00085
73256-56-1*0
Difluorophosgene anion C(F)(F)=[O-]-603.5-605.3± 2.6kJ/mol66.00745 ±
0.00085
474815-26-4*0
Hydroxyoxoammoniumyl O[N+]=O984.1977.7± 1.8kJ/mol47.01293 ±
0.00061
80371-48-8*0
Hydrogen bromide Br-120.71± 0.15kJ/mol80.9119 ±
0.0010
10035-10-6*952
Ammonium chloride [NH4+].[Cl-]-311.556-314.718± 0.063kJ/mol53.49120 ±
0.00095
12125-02-9*510
Chloro(chlorooxy)methylene Cl[C]OCl73.573.7± 3.6kJ/mol98.9155 ±
0.0020
479587-31-0*2
Chlorohydroxymethylene Cl[C]OH13.910.9± 2.6kJ/mol64.4707 ±
0.0012
147723-60-2*1
(Chlorooxy)methylene H[C]OCl119.1117.8± 2.7kJ/mol64.4707 ±
0.0012
331419-80-8*2
Dioxodiazoxane O=NON=O109.3105.2± 1.8kJ/mol76.01168 ±
0.00091
122413-35-8*2
Dibromophosgene C(Br)(Br)=O-144.44± 0.95kJ/mol187.8181 ±
0.0022
593-95-3*590
2-Chloroethanol ClCCO-314.96± 0.53kJ/mol80.5132 ±
0.0019
107-07-3*590
2-Cyclopropyn-1-ylidene C1=C=C=1993.21000.1± 2.5kJ/mol36.0321 ±
0.0024
102508-15-6*2
2-Bromoethanol BrCCO-274.87± 0.47kJ/mol124.9645 ±
0.0019
540-51-2*590
Hypofluorous acid cation O[F+]1142.001138.99± 0.87kJ/mol36.00519 ±
0.00031
90243-22-4*0
Phenylium c1cccc[c+]11148.461135.68± 0.87kJ/mol77.1034 ±
0.0048
17333-73-2*2
2-Cyclopropyn-1-yl anion [C-]1=C=C=1664.8672.1± 1.6kJ/mol36.0326 ±
0.0024
500574-36-7*0
Ammonium bromide [NH4+].[Br-]-253.72-270.30± 0.16kJ/mol97.9425 ±
0.0010
12124-97-9*510
m-Benzyne anion c1[c]ccc[c-]1444.1435.2± 1.3kJ/mol76.0965 ±
0.0048
249589-31-9*0
Cyclopropylide C1C[CH-]1264.7251.9± 1.8kJ/mol41.0723 ±
0.0024
1724-45-4*0
p-Benzyne anion c1c[c]cc[c-]1465.0455.5± 1.3kJ/mol76.0965 ±
0.0048
219298-17-6*0
Triazirinylium ion [N]1N=[N+]11608.81605.9± 1.6kJ/mol42.01967 ±
0.00021
92220-05-8*0
Hydrogen fluoride F-321.16± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*905
Aminooxy anion N[O-]47.540.5± 1.7kJ/mol32.02257 ±
0.00034
51375-41-8*0
Cycloheptane C1CCCCCC1-126.94-156.84± 0.51kJ/mol98.1861 ±
0.0057
291-64-5*500
Dinitrogen pentoxide O=[N+]([O-])O[N+](=O)[O-]-41.04± 0.42kJ/mol108.0105 ±
0.0015
10102-03-1*500
Ethanium [CH3+][H][CH3]888.7870.3± 1.8kJ/mol31.0764 ±
0.0017
24669-33-8*2
Ethylbenzene c1ccc(cc1)CC-12.55± 0.55kJ/mol106.1650 ±
0.0064
100-41-4*500
Isocyanomethane C[N+]#[C-]183.79177.31± 0.82kJ/mol41.0520 ±
0.0016
593-75-9*0
Triiodine cation I[I+]I946.1941.0± 4.1kJ/mol380.712861 ±
0.000090
12596-32-6*0
Phenylacetylene c1ccc(cc1)C#C273.4± 1.1kJ/mol102.1332 ±
0.0064
536-74-3*500
Phenyloxoniumylidene c1ccc(cc1)[O+]901.6887.2± 2.2kJ/mol93.1028 ±
0.0048
41071-17-4*0
Anisole c1ccccc1OC-47.79-72.63± 0.80kJ/mol108.1378 ±
0.0056
100-66-3*0
Hypochlorous acid cation O[Cl+]998.91995.87± 0.90kJ/mol52.45949 ±
0.00095
71606-47-8*0
Hydrogen bromide Br-120.73± 0.15kJ/mol80.9119 ±
0.0010
10035-10-6*842
Fluorobenzene c1ccc(cc1)F-151.80-149.38± 0.89kJ/mol96.1023 ±
0.0048
462-06-6*500
Bicyclo[1.1.0]buta-1,3-diene-2,4-diyl C12=[C]C2=[C]11047.481055.07± 0.73kJ/mol48.0428 ±
0.0032
12184-80-4*0
Bromobenzene c1ccc(cc1)Br59.9± 1.3kJ/mol157.0079 ±
0.0049
108-86-1*500
Hydrogen fluoride F-321.11± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*890
Acetone CC(=O)C-245.16-248.28± 0.38kJ/mol58.0791 ±
0.0025
67-64-1*500
Ethanium [CH3+][H][CH3]895.1877.3± 1.9kJ/mol31.0764 ±
0.0017
24669-33-8*3
Propionaldehyde CCC=O-218.19-216.73± 0.29kJ/mol58.0791 ±
0.0025
123-38-6*500
Triazirine N1N=N1464.0457.6± 2.6kJ/mol43.02816 ±
0.00022
157-29-9*0
trans-1,2-Dibromoethene C(\Br)=C/Br121.2101.4± 2.1kJ/mol185.8453 ±
0.0026
590-12-5*0
1,1-Dibromoethene C=C(Br)Br125.1104.7± 2.2kJ/mol185.8453 ±
0.0026
593-92-0*0
Norbornadiene C1C2C=CC1C=C2263.2237.8± 1.9kJ/mol92.1384 ±
0.0056
121-46-0*0
Monoammonium succinate OC(=O)CCC(=O)[O-].[NH4+]-1067.98± 0.72kJ/mol135.1186 ±
0.0035
38457-08-8*510
Diammonium succinate [O-]C(=O)CCC(=O)[O-].[NH4+].[NH4+]-1182.52± 0.48kJ/mol152.1492 ±
0.0035
2226-88-2*510
Hypofluorous acid anion O[F-]155.3154.7± 2.6kJ/mol36.00629 ±
0.00031
36505-07-4*2
Acrolein C=CC=O-46.6-56.9± 1.4kJ/mol56.0633 ±
0.0024
107-02-8*2
2-Oxo-1-ethylium-1-yl [CH+]C=O1289.51286.1± 2.7kJ/mol42.0361 ±
0.0016
214464-96-7*11
Oxoethylidene anion [CH-]C=O87.083.7± 2.3kJ/mol42.0372 ±
0.0016
106543-38-8*1
Nitric acid trihydrate O[N+](=O)[O-].O.O.O-1062.11-1055.26± 0.21kJ/mol117.0587 ±
0.0019
13444-83-2*500
1-Ethenylium-1-yl [C+]=C1507.11507.1± 2.1kJ/mol26.0367 ±
0.0016
80541-07-7*0
Isocyanogen chloride ClN=[C]314.5316.1± 2.4kJ/mol61.4701 ±
0.0012
75754-69-7*0
Formic acid C(=O)O-431.55-424.72± 0.20kJ/mol46.0254 ±
0.0010
64-18-6*500
Nitric acid monohydrate O[N+](=O)[O-].O-479.18-472.68± 0.19kJ/mol81.0282 ±
0.0012
13444-82-1*500
Dihydrogen fluoride F.H-56.5-54.2± 1.7kJ/mol21.01428 ±
0.00014
12592-22-2*2
(Z)-Diazene anion [H]/N=[N-]\[H]280.0273.3± 2.0kJ/mol30.02991 ±
0.00020
*86631-37-0*0
Formyloxidanyl C(=O)[O]-125.82-127.19± 0.56kJ/mol45.0174 ±
0.0010
16499-21-1*0
Dioxiranyl O1[CH]O1217.3213.8± 2.0kJ/mol45.0174 ±
0.0010
120595-16-6*0
Dihydrogen [H][H]1.4170.019± 0.000kJ/mol2.01588 ±
0.00014
1333-74-0*1
Chlorine chlorite ClO[Cl]=O177.4175.0± 2.2kJ/mol102.9042 ±
0.0019
105206-44-8*2
Hydraziniumyl N[NH2+]886.6873.2± 2.0kJ/mol32.04469 ±
0.00031
20771-51-1*0
Cyclobutane C1CCC13.92± 0.41kJ/mol56.1063 ±
0.0032
287-23-0*590
Oxygen atom hexacation [O+6]42035.2842037.14± 0.12kJ/mol15.99611 ±
0.00030
14158-22-6*0
Ethoxyethane CCOCC-265.22-277.54± 0.80kJ/mol74.1216 ±
0.0033
60-29-7*500
Peroxyhypochlorous acid anion OO[Cl-]-32.2-34.0± 2.6kJ/mol68.4600 ±
0.0011
*67952-08-3*2
Peroxynitrous acid OON=O-5.81-11.64± 0.36kJ/mol63.01288 ±
0.00091
14691-52-2*0
Methylcyclopropane CC1CC11.83± 0.59kJ/mol56.1063 ±
0.0032
594-11-6*590
Tetraoxidanyl OOO[O]53.046.0± 5.1kJ/mol65.0055 ±
0.0012
69696-93-1*2
Cyclopropenylidene anion C1=[C-]=C1544.2543.8± 2.2kJ/mol38.0485 ±
0.0024
*16165-40-5*0
Methanol dimer CO.CO-398.4-419.1± 1.4kJ/mol64.0837 ±
0.0018
42845-44-3*0
Methylamine CN-46.99± 0.35kJ/mol31.05714 ±
0.00088
74-89-5*500
Carbon dioxide anion [C-](=O)=O-340.6-340.1± 2.2kJ/mol44.01005 ±
0.00100
14485-07-5*0
Dioxiranylidene cation [C+]1OO11409.11410.3± 2.6kJ/mol44.00895 ±
0.00100
*138832-57-2*0
Hydrogen difluoride cation [F+]F[H]1267.61265.4± 4.1kJ/mol39.004198 ±
0.000070
*126950-54-7*1
Hydrogen fluoride F-321.02± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*887
Acetic acid CC(=O)O-484.91± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*839
Isocyanogen bromide BrN=[C]341.2335.4± 3.4kJ/mol105.9214 ±
0.0013
65997-98-0*0
Dioxiranylidene anion [C-]1OO1-110.2-109.7± 3.0kJ/mol44.01005 ±
0.00100
*138832-58-3*0
Methyl acetate CC(=O)OC-445.74± 0.61kJ/mol74.0785 ±
0.0025
79-20-9*500
Dioxygen difluoride [O][O](F)F75.171.6± 3.6kJ/mol69.99561 ±
0.00060
183051-89-0*0
Hydronium radical O.[H]-18.5-21.6± 2.1kJ/mol19.02322 ±
0.00037
12168-76-2*100
Dihydrogen cation [H][H+]1489.0601488.480± 0.000kJ/mol2.01533 ±
0.00014
12184-90-6*1
Oxygen difluoride cation FO[F+]1292.111289.58± 0.66kJ/mol53.99566 ±
0.00030
39432-25-2*0
Hydrogen chloride Cl-166.105± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*830
Isoprene CC(=C)C=C48.79± 0.70kJ/mol68.1170 ±
0.0040
78-79-5*500
Hydrazoic acid cation N=[N+]=[N]1333.611327.94± 0.83kJ/mol43.02761 ±
0.00022
58852-14-5*0
Isodiazene anion [N-]N380.9374.1± 2.1kJ/mol30.02991 ±
0.00020
*63986-30-1*0
Oxadiazirine cation [N+]1=NO11509.91507.2± 2.4kJ/mol44.01233 ±
0.00033
*227934-45-4*0
Dioxymethylidyne cation [C+]O[O]1436.61439.0± 2.7kJ/mol44.00895 ±
0.00100
*791121-04-5*2
Dioxymethylidyne cation [C+]O[O]1388.21391.7± 3.2kJ/mol44.00895 ±
0.00100
*791121-04-5*101
Cycloprop-2-enylide C1=C[CH-]1514.8511.8± 2.2kJ/mol39.0565 ±
0.0024
20829-57-6*0
Propionic acid CCC(=O)O-505.47-509.61± 0.18kJ/mol74.0785 ±
0.0025
79-09-4*500
Cyclohexane C1CCCCC1-156.27± 0.36kJ/mol84.1595 ±
0.0049
110-82-7*500
Ethylene glycol OCCO-448.72-455.24± 0.37kJ/mol62.0678 ±
0.0018
107-21-1*500
Hydrazine NN57.2450.68± 0.18kJ/mol32.04524 ±
0.00031
302-01-2*500
n-Heptane CCCCCCC-201.72-224.18± 0.48kJ/mol100.2019 ±
0.0057
142-82-5*500
Oxalic acid C(=O)(C(=O)O)O-819.29± 0.46kJ/mol90.0349 ±
0.0020
144-62-7*500
Hydroxyoxoammoniumyl O[N+]=O984.1977.7± 1.8kJ/mol47.01293 ±
0.00061
80371-48-8*1
Dimethylamine CNC-43.70± 0.39kJ/mol45.0837 ±
0.0017
124-40-3*500
n-Octane CCCCCCCC-226.66-249.78± 0.67kJ/mol114.2285 ±
0.0065
111-65-9*500
Trimethylamine CN(C)C-49.8± 1.0kJ/mol59.1103 ±
0.0025
75-50-3*500
Cyanogen anion N#CC#[N-]281.6284.8± 2.2kJ/mol52.0354 ±
0.0016
11118-88-0*0
1,5-Hexadiene C=CCCC=C54.42± 0.32kJ/mol82.1436 ±
0.0049
592-42-7*500
Diisocyanogen cation [C]#[N+][N+]#[C-]1825.11827.9± 3.2kJ/mol52.0343 ±
0.0016
*78800-21-2*1
Hydrazoic acid anion N=[N]=[N-]309.0302.7± 2.3kJ/mol43.02871 ±
0.00022
203264-98-6*1
Trifluorine FFF80.681.9± 2.6kJ/mol56.9952096 ±
0.0000015
73455-86-4*0
Isocyanogen iodide IN=[C]341.8342.1± 4.9kJ/mol152.92191 ±
0.00080
66004-32-8*0
Hydrogen chloride Cl-166.565± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*839
Cyanoaminyliumyl [N]=[C+]=[N]1671.61672.9± 2.6kJ/mol40.02363 ±
0.00081
316122-03-9*0
Cyanoamidogen anion [N]=[C-]=[N]210.92210.84± 0.77kJ/mol40.02473 ±
0.00081
189879-95-6*0
NON cation [N]O[N+]1443.91444.1± 2.8kJ/mol44.01233 ±
0.00033
*227934-46-5*0
NON anion [N]O[N-]495.3492.8± 2.5kJ/mol44.01343 ±
0.00033
*227934-47-6*0
Dioxohydrazine O=NN=O172.89171.13± 0.14kJ/mol60.01228 ±
0.00062
16824-89-8*2
Cyanamide NC#N58.89± 0.54kJ/mol42.04006 ±
0.00082
420-04-2*500
Diazomethyliumyl [C+]=N=[N]1641.21642.4± 4.1kJ/mol40.02363 ±
0.00081
307495-90-5*0
Diazomethylene anion [C-]=N=[N]408.3408.5± 3.8kJ/mol40.02473 ±
0.00081
205498-92-6*0
3H-Diazirin-3-ylidene [C]1N=N1578.8579.2± 2.7kJ/mol40.02418 ±
0.00081
253308-70-2*0
Carbon dioxide cation [C+](=O)=O1335.01335.5± 2.4kJ/mol44.00895 ±
0.00100
12181-61-2*1
Chloromethyliumylidene [C+]Cl1282.61285.7± 2.4kJ/mol47.4629 ±
0.0012
69773-94-0*0
Chloromethylidyne anion [C-]Cl319.7323.4± 2.5kJ/mol47.4639 ±
0.0012
117129-77-8*0
Propane cation CC[CH3+]974.6954.7± 1.7kJ/mol44.0951 ±
0.0025
34479-70-4*0
Hydrochlorate ion [ClH-]-25.2-24.2± 2.5kJ/mol36.46119 ±
0.00090
63099-75-2*0
Oxygen difluoride anion FO[F-]-202.0-201.9± 2.7kJ/mol53.99675 ±
0.00030
*7783-41-7*0
Tetrazete N1=NN=N1764.9759.0± 1.8kJ/mol56.02696 ±
0.00028
42851-09-2*0
Bromosyl bromide BrBr[O]178.8163.0± 2.1kJ/mol175.8074 ±
0.0020
68322-97-4*0
1,1,1-Trichloroethane CC(Cl)(Cl)Cl-177.55± 0.49kJ/mol133.4033 ±
0.0031
71-55-6*500
Isocyanogen iodide anion IN=[C-]123.0125.1± 9.3kJ/mol152.92246 ±
0.00080
*66004-32-8*0
Carbon monoxide anion [C]#[O-]30.033.7± 2.3kJ/mol28.01065 ±
0.00085
12539-63-8*0
Nitrous acid anion O[N-]=O-105.85-110.48± 0.78kJ/mol47.01403 ±
0.00061
256393-36-9*2
Carbon monoxide [C-]#[O+]465.579469.286± 0.026kJ/mol28.01010 ±
0.00085
630-08-0*1
Chlorine hydride oxide [H][Cl](=O)(=O)=O165.1155.3± 2.5kJ/mol84.4588 ±
0.0013
1027055-52-2*0
Vinyl chloride C=CCl-2.71.9± 1.9kJ/mol62.4979 ±
0.0018
75-01-4*500
Poly(vinylchloride) C{-}(Cl)C{+n}-84.6-94.0± 1.3kJ/mol62.4979 ±
0.0018
9002-86-2*500
1-Methyl-1-ethylium-1-yl C[C+]C1058.71046.1± 2.6kJ/mol42.0792 ±
0.0024
121408-19-3*0
Chlorodioxidenium ClO[O+]1202.71200.4± 3.4kJ/mol67.4510 ±
0.0011
64710-10-7*0
1,1-Dichloroethene C=C(Cl)Cl-23.81± 0.50kJ/mol96.9427 ±
0.0024
75-35-4*500
Isopropylidene anion C[C-]C282.9268.8± 2.7kJ/mol42.0803 ±
0.0024
*121408-19-3*0
Dichloromethane C(Cl)Cl-123.02± 0.50kJ/mol84.9320 ±
0.0020
75-09-2*590
Trioxirane O1OO1272.9270.3± 1.3kJ/mol47.99820 ±
0.00090
153851-84-4*0
1,3-Propanediyl [CH2]C[CH2]320.1308.2± 1.7kJ/mol42.0797 ±
0.0024
32458-33-6*1
1,2-Propadien-1-ylium-1-yl-3-ylidene [C]=C=[C+]1981.51989.4± 2.2kJ/mol36.0316 ±
0.0024
118090-85-0*1
Perchloryl cation O=[Cl+](=O)[O]1252.11246.3± 2.5kJ/mol83.4504 ±
0.0013
23594-88-9*0
Hydrogen peroxide OO-193.172-187.355± 0.080kJ/mol34.01468 ±
0.00062
7722-84-1*500
Difluoromethylene anion [C-](F)F-211.20-210.02± 0.60kJ/mol50.00805 ±
0.00080
66212-40-6*0
Difluorodioxidanium FO[O+]F1283.61279.1± 2.3kJ/mol69.99506 ±
0.00060
*7783-44-0*1
Fluoromethylidyne anion [C-]F200.8204.3± 1.9kJ/mol31.00965 ±
0.00080
33412-12-3*0
Trioxidanyl OO[O]25.3223.23± 0.13kJ/mol49.00614 ±
0.00090
12500-78-6*0
Nitrosyl nitrite anion O=NON=[O-]-103.1-106.2± 2.8kJ/mol76.01223 ±
0.00091
*122413-35-8*1
Hydrogen bromide Br-120.58± 0.15kJ/mol80.9119 ±
0.0010
10035-10-6*839
Azide [N]N=[N-]272.56± 0.48kJ/mol42.02077 ±
0.00021
14343-69-2*800
Difluorovinylidene [C]=C(F)F129.4130.6± 2.2kJ/mol62.0182 ±
0.0016
41895-33-4*0
Bromoacetylene C#CBr281.6275.1± 1.6kJ/mol104.9333 ±
0.0019
593-61-3*0
Acetonitrile CC#N40.61± 0.24kJ/mol41.0520 ±
0.0016
75-05-8*500
Deuterium hydride [H][2H]0.3280.319± 0.000kJ/mol3.022042 ±
0.000070
13983-20-5*0
1-Propenylium CC=[CH+]1231.91221.6± 1.7kJ/mol41.0713 ±
0.0024
50457-58-4*2
1-Propenylide CC=[CH-]204.1192.8± 1.8kJ/mol41.0723 ±
0.0024
65887-20-9*2
2-Propen-3-ylium-1-ylidyne [CH][CH][C+]1791.11792.7± 2.6kJ/mol38.0474 ±
0.0024
161054-36-0*0
Chloro(chlorooxy)methylene Cl[C]OCl98.101.± 15.kJ/mol98.9155 ±
0.0020
479587-31-0*11
Peroxyhypochlorous acid cation OO[Cl+]1030.31024.5± 2.5kJ/mol68.4589 ±
0.0011
*67952-07-2*1
Propenediylidene anion [CH][CH][C-]588.8590.0± 2.3kJ/mol38.0485 ±
0.0024
*161054-36-0*0
Chlorooxomethylium Cl[C+]=O783.7783.9± 2.2kJ/mol63.4623 ±
0.0012
38264-03-8*0
Trihydrogen [H]1[H][H]1756.931754.146± 0.015kJ/mol3.02382 ±
0.00021
12184-91-7*2
Nitric acid O[N+](=O)[O-]-186.85± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*801
2-Iodoethanol ICCO-207.2± 2.4kJ/mol171.9650 ±
0.0017
624-76-0*590
1,3-Butadiyne cation C#CC#[CH+]1440.181442.04± 0.86kJ/mol50.0581 ±
0.0032
55468-55-8*0
Carbon suboxide cation O=C=[C+]=C=O928.3931.8± 1.3kJ/mol68.0304 ±
0.0025
151528-67-5*0
Carbon suboxide anion O=C=[C-]=C=O-131.4-128.0± 2.5kJ/mol68.0314 ±
0.0025
109362-94-9*0
Benzene anion c1ccc(cc1)[H-]209.1197.2± 1.2kJ/mol78.1124 ±
0.0048
34562-85-1*0
Hydroxylamine NO-97.1± 2.2kJ/mol33.02996 ±
0.00037
7803-49-8*1000
Paraformaldehyde C=O-179.2± 1.6kJ/mol30.02598 ±
0.00087
30525-89-4*500
Dioxodiazoxane O=NON=O125.7120.4± 2.1kJ/mol76.01168 ±
0.00091
122413-35-8*3
o-Benzyne C1=CC#CC=C1625.6616.2± 1.1kJ/mol76.0960 ±
0.0048
462-80-6*1
Hydrogen chloride Cl-166.741± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*842
Hydrogen difluoride cation F[H][F+]1241.1238.± 17.kJ/mol39.004198 ±
0.000070
126950-54-7*1
Cyclopropylium C1C[CH+]11104.51093.0± 2.5kJ/mol41.0713 ±
0.0024
1724-43-2*0
m-Benzyne c1[c]ccc[c]1526.9518.5± 1.2kJ/mol76.0960 ±
0.0048
1828-89-3*0
p-Benzyne cation c1c[c]cc[c+]11425.71418.5± 2.1kJ/mol76.0954 ±
0.0048
121058-09-1*0
p-Benzyne c1c[c]cc[c]1587.0577.6± 1.2kJ/mol76.0960 ±
0.0048
3355-34-8*0
Toluene c1ccc(cc1)C19.7211.97± 0.34kJ/mol92.1384 ±
0.0056
108-88-3*500
Cyclopentadienylium [CH+]1C=CC=C11087.521074.65± 0.93kJ/mol65.0927 ±
0.0040
29661-18-5*0
Cycloheptene C1CCC=CCC1-25.6-46.7± 1.7kJ/mol96.1702 ±
0.0057
628-92-2*500
Cycloheptatriene C1C=CC=CC=C1153.56144.78± 0.97kJ/mol92.1384 ±
0.0056
544-25-2*500
Peroxychlorous acid O=ClOO103.597.6± 2.5kJ/mol84.4588 ±
0.0013
177778-92-6*2
Isocyanic fluoride FN=[C]301.3303.1± 1.8kJ/mol45.01584 ±
0.00080
16992-26-0*0
Triiodine III153.4149.4± 3.6kJ/mol380.713410 ±
0.000090
12596-31-5*0
Phenylethene c1ccc(cc1)C=C104.30± 0.48kJ/mol104.1491 ±
0.0064
100-42-5*500
Bromoniumyl [BrH+]1097.701089.85± 0.14kJ/mol80.9114 ±
0.0010
12258-64-9*0
Phenol c1ccc(cc1)O-146.43-162.28± 0.66kJ/mol94.1112 ±
0.0048
108-95-2*500
Tetraazatetrahedrane N12N3N1N23763.7757.2± 1.7kJ/mol56.02696 ±
0.00028
12596-63-3*0
Anisole c1ccccc1OC-119.56± 0.77kJ/mol108.1378 ±
0.0056
100-66-3*500
Ammonia anion [NH3-]94.387.3± 2.4kJ/mol17.03111 ±
0.00022
37353-00-7*0
Benzaldehyde c1ccc(cc1)C=O-85.8-86.9± 1.1kJ/mol106.1219 ±
0.0056
100-52-7*500
Fluorobenzene anion c1ccc(cc1)[F-]-18.3-30.2± 1.8kJ/mol96.1029 ±
0.0048
34561-55-2*0
Iodobenzene cation c1ccc(cc1)[I+]1022.71007.2± 1.0kJ/mol204.0078 ±
0.0048
38406-85-8*0
Hydrogen fluoride F-321.45± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*832
Nitrobenzene c1ccc(cc1)[N+](=O)[O-]6.3± 1.4kJ/mol123.1094 ±
0.0049
98-95-3*500
1-Propynylium CC#[C+]1547.01545.0± 3.1kJ/mol39.0554 ±
0.0024
24858-94-4*0
Nitric acid O[N+](=O)[O-]-197.77± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*805
Nitromethane C[N+](=O)[O-]-114.18-112.99± 0.43kJ/mol61.0401 ±
0.0010
75-52-5*500
2,2,4-Trimethylpentane CC(C)CC(C)(C)C-224.5-258.9± 1.5kJ/mol114.2285 ±
0.0065
540-84-1*500
Trifluoroethene FC(F)=CF-482.7-487.7± 8.4kJ/mol82.0245 ±
0.0016
359-11-5*0
Norbornadiene C1C2C=CC1C=C2204.5± 2.0kJ/mol92.1384 ±
0.0056
121-46-0*500
2,3-Butanedione CC(=O)C(=O)C-365.60± 0.54kJ/mol86.0892 ±
0.0033
431-03-8*500
2,3-Butanedione CC(=O)C(=O)C-310.53-327.10± 0.70kJ/mol86.0892 ±
0.0033
431-03-8*0
Succinic acid OC(=O)CCC(=O)O-918.55-940.28± 0.13kJ/mol118.0880 ±
0.0034
110-15-6*500
Cycloprop-1-enylium C1C=[C+]11502.31498.0± 2.2kJ/mol39.0554 ±
0.0024
117067-78-4*0
Cycloprop-1-enylide C1C=[C-]1373.5369.1± 2.2kJ/mol39.0565 ±
0.0024
80251-77-0*0
1,2-Diiodoethane C(I)CI87.7973.13± 0.90kJ/mol281.8621 ±
0.0016
624-73-7*0
1,2-Diiodoethane C(I)CI9.26± 0.60kJ/mol281.8621 ±
0.0016
624-73-7*500
Helium hydride cation [He][H+]1350.1481348.258± 0.000kJ/mol5.009993 ±
0.000070
17009-49-3*0
Xenon hydride cation [Xe+][H]1038.151036.37± 0.89kJ/mol132.2974 ±
0.0200
37276-91-8*0
2-Butanone CCC(=O)C-267.87-273.36± 0.91kJ/mol72.1057 ±
0.0033
78-93-3*500
Tetraoxodinitrogen cation O=N(=O)[N+](=O)=O1030.61025.1± 2.6kJ/mol92.0105 ±
0.0012
64476-91-1*0
2,4,5-Trioxa-1,3-diazabicyclo[1.1.1]pentane N12ON(O1)O2602.5593.3± 2.1kJ/mol76.01168 ±
0.00091
224950-18-9*0
Acrolein C=CC=O-95.8± 1.4kJ/mol56.0633 ±
0.0024
107-02-8*500
Iodine monochloride ICl-36.511-35.537± 0.063kJ/mol162.35717 ±
0.00090
7790-99-0*510
Trioxidane OOO-82.04-90.64± 0.70kJ/mol50.01408 ±
0.00091
14699-99-1*0
Ethenedione cation O=C=C=[O+]909.5912.7± 2.7kJ/mol56.0197 ±
0.0017
12541-99-0*0
Dinitrogen dimer N#N.N#N-0.880.84± 0.67kJ/mol56.02696 ±
0.00028
154680-01-0*0
1-Hydroxyethyl C[CH]O-42.28-55.71± 0.65kJ/mol45.0605 ±
0.0017
2348-46-1*0
Water O-238.932-241.836± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*2
Acetylene anion C#[CH-]356.8356.7± 1.9kJ/mol26.0378 ±
0.0016
50443-89-5*0
Water trimer O.O.O-762.73-776.84± 0.21kJ/mol54.04584 ±
0.00099
31014-12-7*0
Methylaminyliumyl C[N+]1388.31382.0± 2.6kJ/mol29.04071 ±
0.00083
56924-51-7*1
Hydrazoic acid anion N=[N]=[N-]316.1310.0± 2.3kJ/mol43.02871 ±
0.00022
203264-98-6*2
2-Hydroxyethylium [CH2+]CO1024.61012.1± 2.0kJ/mol45.0600 ±
0.0017
38607-31-7*1
Isocyanogen bromide anion BrN=[C-]105.0101.8± 4.6kJ/mol105.9220 ±
0.0013
*238754-53-5*0
mu-Oxodichlorine cation Cl[O+]Cl1130.441126.83± 0.63kJ/mol86.9043 ±
0.0018
51174-96-0*0
Hydroxyoxoammoniumyl O[N+]=O1014.81008.4± 2.0kJ/mol47.01293 ±
0.00061
80371-48-8*2
Oxonium [OH3+]605.83599.08± 0.17kJ/mol19.02267 ±
0.00037
13968-08-6*2
Oxoniumyl ion [H][O+][H]978.466975.563± 0.028kJ/mol18.01473 ±
0.00033
56583-62-1*1
Trihydrogen [H]1[H][H]1745.878743.094± 0.062kJ/mol3.02382 ±
0.00021
12184-91-7*1
Trioxodinitrate anion O=N-[N](=O)[O-]-87.3-93.1± 2.2kJ/mol76.01223 ±
0.00091
194856-62-7*1
Formylimidogen C(=O)[N]245.4242.2± 3.3kJ/mol43.02478 ±
0.00086
42288-92-6*2
Nitrous acid anion O[N-]=O-105.5-109.4± 1.8kJ/mol47.01403 ±
0.00061
256393-36-9*1
Carbon monoxide [C-]#[O+]-113.803-110.523± 0.026kJ/mol28.01010 ±
0.00085
630-08-0*2
mu-Oxodichlorate anion Cl[O-]Cl-147.8-147.7± 2.5kJ/mol86.9053 ±
0.0018
365546-30-1*0
Propylene cation CC=[CH2+]975.22961.69± 0.21kJ/mol42.0792 ±
0.0024
34504-10-4*0
2-Propen-1-ylium-1-ylidene C=C[C+]1373.21369.6± 2.0kJ/mol39.0554 ±
0.0024
88000-25-3*0
2-Oxo-1-ethylium-1-yl [CH+]C=O1292.11288.8± 2.6kJ/mol42.0361 ±
0.0016
214464-96-7*12
Acetaldehyde CC=O-187.14-191.86± 0.32kJ/mol44.0526 ±
0.0017
75-07-0*500
Cyclopropane cation C1[CH2+]C11022.31006.8± 1.6kJ/mol42.0792 ±
0.0024
34496-93-0*0
Dihydrogen cation [H][H+]1488.3641488.480± 0.000kJ/mol2.01533 ±
0.00014
12184-90-6*2
Trioxirane cation O1O[O+]11444.61442.4± 2.2kJ/mol47.99765 ±
0.00090
*153851-84-4*0
Tetrabromomethane C(Br)(Br)(Br)Br48.7± 1.4kJ/mol331.6267 ±
0.0041
558-13-4*500
Tetraiodomethane C(I)(I)(I)I392.5± 8.0kJ/mol519.62858 ±
0.00081
507-25-5*500
Bromomethane CBr-56.60-59.61± 0.19kJ/mol94.9385 ±
0.0013
74-83-9*590
Ethynylene [C]=[C]820.28826.85± 0.26kJ/mol24.0214 ±
0.0016
12070-15-4*2
Difluorodioxidanium FO[O+]F1287.11283.0± 2.3kJ/mol69.99506 ±
0.00060
*7783-44-0*2
Fluorine atom [F]77.25579.040± 0.048kJ/mol18.99840320 ±
0.00000050
14762-94-8*1
Dihydrogen [H][H]-0.000-0.058± 0.000kJ/mol2.01588 ±
0.00014
1333-74-0*2
Hydrogen fluoride F-321.13± 0.16kJ/mol20.006343 ±
0.000070
7664-39-3*906
Ethynylene [C]=[C]827.50834.21± 0.26kJ/mol24.0214 ±
0.0016
12070-15-4*1
Trioxygen difluoride FOOOF112.2107.1± 1.1kJ/mol85.99501 ±
0.00090
16829-28-0*0
Acetic acid CC(=O)O-484.89± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*833
1,2-Propadien-1-ylium-1-yl-3-ylidene [C]=C=[C+]1944.71952.6± 1.9kJ/mol36.0316 ±
0.0024
118090-85-0*0
Hydrogen peroxide OO-129.480-135.466± 0.063kJ/mol34.01468 ±
0.00062
7722-84-1*2
Acetic acid CC(=O)O-484.94± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*850
Trihydrogen cation [H]1[H+][H]11110.3041106.697± 0.013kJ/mol3.02327 ±
0.00021
28132-48-1*2
Hydrazoic acid N=[N+]=[N-]257.57± 0.48kJ/mol43.02816 ±
0.00022
7782-79-8*1000
Hydrazoic acid N=[N+]=[N-]272.56± 0.48kJ/mol43.02816 ±
0.00022
7782-79-8*800
Nitrosyl nitrate O=NO[N+](=O)[O-]60.452.5± 1.9kJ/mol92.0111 ±
0.0012
15969-55-8*2
Methyl acetate CC(=O)OC-394.28-413.15± 0.61kJ/mol74.0785 ±
0.0025
79-20-9*0
Hydrogen peroxide cation O[OH+]897.75890.77± 0.37kJ/mol34.01413 ±
0.00062
12325-10-9*11
Peroxyhypochlorous acid anion OO[Cl-]-2.9-3.3± 2.6kJ/mol68.4600 ±
0.0011
*67952-08-3*1
Ammonium hydroxide [NH4+].[OH-]-366.716± 0.062kJ/mol35.04584 ±
0.00047
1336-21-6*1000
Chlorine atom [Cl]119.621121.228± 0.0011kJ/mol35.45270 ±
0.00090
22537-15-1*1
2-Chloro ozone ClO([O])[O]265.9265.3± 3.7kJ/mol83.4509 ±
0.0013
*141801-66-3*0
1-Methylethenylium C[C+]=C995.2986.0± 2.0kJ/mol41.0713 ±
0.0024
50457-57-3*0
Oxygen atom pentacation [O+5]28708.78828710.646± 0.053kJ/mol15.99666 ±
0.00030
14127-66-3*0
Ethyl bromide CCBr-55.80-91.33± 0.26kJ/mol108.9651 ±
0.0019
74-96-4*500
Hydroxylamine NO-33.23-43.60± 0.46kJ/mol33.02996 ±
0.00037
7803-49-8*0
1-Methylethenyl anion C[C-]=C199.4188.2± 2.0kJ/mol41.0723 ±
0.0024
65887-19-6*0
Fluorosyl fluoride FF[O]227.225.± 21.kJ/mol53.99621 ±
0.00030
86825-57-2*2
Vinyl iodide C=CI139.5130.6± 1.2kJ/mol153.9497 ±
0.0016
593-66-8*0
Iodine atom [I]198.109197.709± 0.0021kJ/mol126.904470 ±
0.000030
14362-44-8*2
Nitrogen atom [N]470.579472.442± 0.024kJ/mol14.006740 ±
0.000070
17778-88-0*1
Diatomic bromine cation Br[Br+]1060.321045.36± 0.23kJ/mol159.8075 ±
0.0020
12595-71-0*0
Trihydrogen [H]1[H][H]1215.9218.3± 1.1kJ/mol3.02382 ±
0.00021
12184-91-7*100
Difluorovinylidene cation [C+]=C(F)F1181.51183.0± 2.3kJ/mol62.0177 ±
0.0016
268566-71-8*0
Methylene [CH2]391.068391.625± 0.098kJ/mol14.02658 ±
0.00081
2465-56-7*0
Oxygen atom tetracation [O+4]17719.20717721.064± 0.025kJ/mol15.99721 ±
0.00030
14127-65-2*0
Oxoethylidene anion [CH-]C=O92.489.1± 2.5kJ/mol42.0372 ±
0.0016
106543-38-8*2
Dihydrogen anion [H][H-]253.8254.7± 1.2kJ/mol2.01643 ±
0.00014
12184-89-3*0
Dioxaziridine N1OO1277.3270.6± 2.0kJ/mol47.01348 ±
0.00061
67394-35-8*0
Methyl formate COC=O-346.78-359.82± 0.87kJ/mol60.0520 ±
0.0017
107-31-3*0
Tribromide Br[Br-]Br-129.55± 0.25kJ/mol239.7125 ±
0.0030
14522-80-6*800
Chloro(chlorooxy)methylene Cl[C]OCl101.1104.7± 4.8kJ/mol98.9155 ±
0.0020
479587-31-0*12
Nitrosyl nitrite anion O=NON=[O-]-100.3-103.5± 2.9kJ/mol76.01223 ±
0.00091
*122413-35-8*2
Ethyl formate C(=O)OCC-375.1-393.7± 1.2kJ/mol74.0785 ±
0.0025
109-94-4*0
Iodine monochloride ICl-24.048± 0.063kJ/mol162.35717 ±
0.00090
7790-99-0*590
Tribromine cation Br[Br+]Br1035.91013.2± 2.6kJ/mol239.7115 ±
0.0030
33105-86-1*0
Tetroxidane OOOO-34.2-44.6± 2.4kJ/mol66.0135 ±
0.0012
29683-94-1*0
Hydroxylamine NO-107.61± 0.63kJ/mol33.02996 ±
0.00037
7803-49-8*500
Polyoxymethylene C=O-170.88± 0.21kJ/mol30.02598 ±
0.00087
9002-81-7*500
Cyclopentadiene C1C=CC=C1109.80± 0.58kJ/mol66.1011 ±
0.0040
542-92-7*590
Hypochloroperoxoous acid, hydroxy ester OOOCl49.542.5± 2.5kJ/mol84.4588 ±
0.0013
928652-99-7*2
Oxygen atom heptacation [O+7]113369.48113371.34± 0.12kJ/mol15.99556 ±
0.00030
14274-89-6*0
Carbon suboxide O=C=C=C=O-131.7-116.6± 1.3kJ/mol68.0309 ±
0.0025
504-64-3*500
Acetoxy CC(=O)[O]-182.7-191.5± 1.2kJ/mol59.0440 ±
0.0017
13799-69-4*1
1-Propenylium CC=[CH+]1233.81223.4± 2.0kJ/mol41.0713 ±
0.0024
50457-58-4*1
Difluorine cation F[F+]1514.3011514.475± 0.013kJ/mol37.9962578 ±
0.0000010
12184-86-0*0
Formaldehyde C=O-171.19± 0.59kJ/mol30.02598 ±
0.00087
50-00-0*800
1-Propenylide CC=[CH-]210.5199.4± 2.1kJ/mol41.0723 ±
0.0024
65887-20-9*1
Acetoxy CC(=O)[O]-182.7-191.4± 1.2kJ/mol59.0440 ±
0.0017
13799-69-4*0
Oxygen atom dication [O++]4949.4594953.000± 0.013kJ/mol15.99830 ±
0.00030
14127-63-0*0
Dioxofluorine cation [O]F[O+]1667.01664.8± 2.8kJ/mol50.99665 ±
0.00060
223566-05-0*0
m-Benzyne c1[c]ccc[c]1614.6605.2± 1.4kJ/mol76.0960 ±
0.0048
1828-89-3*1
1-Propen-1-yl-3-ylidene [CH]C=[CH]657.4654.0± 1.5kJ/mol39.0559 ±
0.0024
84654-90-0*1
Water O-286.302-292.743± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*510
Hydrogen iodide I-56.826± 0.090kJ/mol127.912410 ±
0.000076
10034-85-2*800
Oxygen atom octacation [O+8]197447.75197449.60± 0.12kJ/mol15.99501 ±
0.00030
21450-98-6*0
Chlorine trifluoride cation F[Cl+](F)F1053.41049.1± 2.4kJ/mol92.44736 ±
0.00090
478167-77-0*0
iso-Hexane CCCC(C)C-180.36-204.02± 0.83kJ/mol86.1754 ±
0.0049
107-83-5*500
Tropylide [CH-]1C=CC=CC=C1260.9244.6± 2.0kJ/mol91.1310 ±
0.0056
34464-18-1*0
Propionic acid CCC(=O)O-436.42-454.31± 0.60kJ/mol74.0785 ±
0.0025
79-09-4*0
Deuterium molecule cation [2H][2H+]1492.2861492.361± 0.000kJ/mol4.02765497609 ±
0.00000000080
12184-84-8*0
Deuteride [2H-]146.991148.904± 0.0021kJ/mol2.01465035791 ±
0.00000000040
14452-69-8*0
sec-Butylium CC[CH+]C792.8769.2± 1.7kJ/mol57.1137 ±
0.0033
16548-59-7*0
Hydroxymethylene [CH]O112.67108.92± 0.28kJ/mol30.02598 ±
0.00087
19710-56-6*0
Dioxofluorine anion [O]F[O-]155.9154.3± 2.5kJ/mol50.99775 ±
0.00060
*175861-93-5*0
Peroxyformate C(=O)O[O-]-320.7-326.5± 1.8kJ/mol61.0174 ±
0.0012
104960-05-6*2
Bicyclo[1.1.0]buta-1,3-dien-4-ylium-2-yl C12=[C]C2=[C+]12087.42097.2± 2.7kJ/mol48.0423 ±
0.0032
289679-91-0*0
Bicyclo[1.1.0]buta-1,3-dien-2-yl anion C12=[C]C2=[C-]1803.7811.3± 2.1kJ/mol48.0433 ±
0.0032
289679-89-6*0
Peroxyformyl C(=O)O[O]-90.5-95.9± 1.8kJ/mol61.0168 ±
0.0012
56240-83-6*2
1,3-Butadiyn-4-ylium-1-yl [C]#CC#[C+]2109.92120.5± 2.9kJ/mol48.0423 ±
0.0032
124708-46-9*0
Peroxyhypochlorous acid cation OO[Cl+]1050.81045.1± 2.5kJ/mol68.4589 ±
0.0011
*67952-07-2*2
1,3-Butadiynyl anion [C]#CC#[C-]677.7686.8± 1.2kJ/mol48.0433 ±
0.0032
59158-53-1*0
Oxygen atom trication [O+3]10249.92910252.880± 0.018kJ/mol15.99775 ±
0.00030
14127-64-1*0
Hydrazine monohydrate NN.O-242.67± 0.19kJ/mol50.06052 ±
0.00053
7803-57-8*500
Tetraoxodinitrate anion O=N(=O)[N-](=O)=O-184.6-187.8± 2.4kJ/mol92.0116 ±
0.0012
63552-02-3*0
Hydrogen peroxide cation O[OH+]931.41924.55± 0.94kJ/mol34.01413 ±
0.00062
12325-10-9*22
1,2-Dibromoethane C(Br)CBr-80.3± 1.2kJ/mol187.8612 ±
0.0026
106-93-4*500
Bromodioxy BrO[O]118.1109.1± 4.3kJ/mol111.9028 ±
0.0012
67177-47-3*0
1,3-Butadien-2-ol C=C(O)C=C-43.1-59.6± 2.3kJ/mol70.0898 ±
0.0032
59120-04-6*21
1,3-Butadien-2-ol C=C(O)C=C-53.8-69.1± 1.6kJ/mol70.0898 ±
0.0032
59120-04-6*1
Isocyanogen cation [C]#[N+]C#N1653.11655.4± 1.6kJ/mol52.0343 ±
0.0016
133415-63-1*0
Acrolein C=CC=O-55.3-65.4± 1.2kJ/mol56.0633 ±
0.0024
107-02-8*0
1,2-Propadien-1-one cation [CH2+]=C=C=O1012.61011.2± 1.9kJ/mol54.0468 ±
0.0024
87612-93-9*0
2-Propynal cation C#[C+]C=O1168.31167.2± 1.6kJ/mol54.0468 ±
0.0024
100815-70-1*0
Ethenedione anion O=C=C=[O-]-148.1-145.6± 2.9kJ/mol56.0207 ±
0.0017
77783-15-4*0
Diisocyanogen cation [C]#[N+][N+]#[C-]1838.41842.3± 3.1kJ/mol52.0343 ±
0.0016
*78800-21-2*2
Dichloromethylene [C](Cl)Cl229.49230.67± 0.64kJ/mol82.9161 ±
0.0020
1605-72-7*0
Vinyl alcohol cation C=C[OH+]778.8767.9± 1.4kJ/mol44.0520 ±
0.0017
57239-63-1*0
Chlorous acid anion O[Cl-]=O-154.3-156.2± 3.3kJ/mol68.4600 ±
0.0011
99559-66-7*0
Hydrazoic acid N=[N+]=[N-]261.44± 0.65kJ/mol43.02816 ±
0.00022
7782-79-8*500
Propylidene anion CC[CH-]300.8286.6± 3.3kJ/mol42.0803 ±
0.0024
*121408-55-7*0
Diazene N=N207.10199.96± 0.44kJ/mol30.02936 ±
0.00020
3618-05-1*1
Oxiranylidene C1[C]O1213.5209.3± 1.4kJ/mol42.0367 ±
0.0016
50983-85-2*0
Fluorosyl fluoride anion FF[O-]-147.2-146.9± 3.0kJ/mol53.99675 ±
0.00030
*86825-57-2*0
Peroxyformic acid C(=O)OO-279.35-288.48± 0.90kJ/mol62.0248 ±
0.0012
107-32-4*0
Dinitrogen tetraoxide O=N(=O)N(=O)=O-37.86-27.01± 0.19kJ/mol92.0111 ±
0.0012
10544-72-6*500
Hydrogen cyanide anion [CH-]#N129.509129.031± 0.090kJ/mol27.02593 ±
0.00081
12334-27-9*0
Dichlorine cation Cl[Cl+]1108.2871108.266± 0.013kJ/mol70.9049 ±
0.0018
12595-90-3*0
mu-Oxodioxodinitrogen O=NO[N+]=O984.0981.0± 3.2kJ/mol76.01113 ±
0.00091
87950-63-8*1
2-Hydroxyethylium [CH2+]CO1019.21007.1± 1.6kJ/mol45.0600 ±
0.0017
38607-31-7*0
Methylaminyliumyl C[N+]1388.31382.0± 2.6kJ/mol29.04071 ±
0.00083
56924-51-7*0
Tetraoxidanyl OOO[O]76.769.5± 6.1kJ/mol65.0055 ±
0.0012
69696-93-1*1
Ethane anion C[CH3-]41.926.6± 4.4kJ/mol30.0696 ±
0.0017
54064-82-3*0
Hydrogen peroxide OO-190.76± 0.30kJ/mol34.01468 ±
0.00062
7722-84-1*800
Dioxohydrazine O=NN=O172.89171.13± 0.14kJ/mol60.01228 ±
0.00062
16824-89-8*0
Hydrogen peroxide cation O[OH+]897.75890.77± 0.37kJ/mol34.01413 ±
0.00062
12325-10-9*0
Nitrogen sesquioxide cation O=N-[N+](=O)[O]1027.61023.7± 4.8kJ/mol76.01113 ±
0.00091
*10544-73-7*0
Ethoxyethene C=COCC-110.9-134.7± 2.3kJ/mol72.1057 ±
0.0033
109-92-2*21
Hydrodioxonitrogen cation [NH+](=O)[O]1129.71123.0± 3.2kJ/mol47.01293 ±
0.00061
252986-76-8*0
Chlorine pentafluoride cation F[Cl+](F)(F)(F)F1005.8996.8± 3.3kJ/mol130.44417 ±
0.00090
478167-78-1*0
Propynylidene [CH]=C=[CH]597.6599.4± 1.3kJ/mol38.0480 ±
0.0024
67152-18-5*2
Trioxygen difluoride FOOOF113.4107.6± 2.1kJ/mol85.99501 ±
0.00090
16829-28-0*2
Diisocyanogen anion [C-]#[N+][N]#[C-]456.6462.3± 3.6kJ/mol52.0354 ±
0.0016
*78800-22-3*0
Hydrogen isocyanide anion [C-]=N191.54191.72± 0.37kJ/mol27.02593 ±
0.00081
96913-22-3*0
Hydrogen peroxide OO-129.460-135.466± 0.063kJ/mol34.01468 ±
0.00062
7722-84-1*1
Isoformyl anion [C][O].[H-]55.758.4± 1.8kJ/mol29.01859 ±
0.00086
81747-63-9*0
Nitrogen atom anion [N-]487.6489.9± 2.5kJ/mol14.007289 ±
0.000070
17778-87-9*0
Imidogen [NH]358.75358.79± 0.17kJ/mol15.014680 ±
0.000099
13774-92-0*1
Chloromethylene [CH]Cl320.26320.55± 0.89kJ/mol48.4713 ±
0.0012
2108-20-5*0
Ethoxyethene C=COCC-110.4-132.5± 2.7kJ/mol72.1057 ±
0.0033
109-92-2*1
Ethoxyethene C=COCC-108.3-131.5± 2.3kJ/mol72.1057 ±
0.0033
109-92-2*11
Isofulminic acid cation [OH+][N+]#[C-]1377.11375.0± 2.9kJ/mol43.02423 ±
0.00086
117800-60-9*0
Isocyanogen bromide cation BrN=[C+]1469.91464.2± 5.9kJ/mol105.9209 ±
0.0013
238754-53-5*0
Hydroxyaminylium [NH+]O1019.61012.4± 2.5kJ/mol32.02147 ±
0.00034
66097-71-0*0
1,2-Difluoroethene C(F)=CF-302.98-309.08± 0.99kJ/mol64.0341 ±
0.0016
1691-13-0*0
Chlorine chlorite ClO[Cl]=O168.6166.4± 1.3kJ/mol102.9042 ±
0.0019
105206-44-8*0
Difluorodioxidane anion FO[O-]F-251.-251.± 28.kJ/mol69.99615 ±
0.00060
*7783-45-1*0
Chlorohydroxymethyl [CH](Cl)O-54.9-60.6± 1.1kJ/mol65.4787 ±
0.0012
147139-06-8*0
Diazene N=N207.10199.96± 0.44kJ/mol30.02936 ±
0.00020
3618-05-1*0
Difluorovinylidene anion [C-]=C(F)F-88.2-87.1± 2.3kJ/mol62.0188 ±
0.0016
107693-92-5*0
Carbon atom [C]1114.9621120.109± 0.047kJ/mol12.01070 ±
0.00080
7440-44-0*3
Dibromovinylidene [C]=C(Br)Br510.0498.9± 4.1kJ/mol183.8294 ±
0.0026
261771-36-2*0
Fluorovinylidene [C]=CF298.9300.0± 3.1kJ/mol44.0277 ±
0.0016
70302-00-0*0
Hydrazine anion N[NH2-]232.1217.8± 4.1kJ/mol32.04579 ±
0.00031
65391-88-0*0
Bromovinylidene [C]=CBr466.1460.1± 3.8kJ/mol104.9333 ±
0.0019
161957-27-3*0
Chloroethane CCCl-134.28-135.90± 0.27kJ/mol64.5138 ±
0.0019
75-00-3*500
Oxiranylium C1[CH+]O1901.1893.1± 1.5kJ/mol43.0441 ±
0.0016
57789-76-1*0
Water dimer cation O.[OH2+]556.8546.4± 3.0kJ/mol36.03001 ±
0.00066
158061-35-9*0
Hydrogen peroxide cation O[OH+]931.43924.55± 0.94kJ/mol34.01413 ±
0.00062
12325-10-9*21
1-Methoxyethenol C=C(O)OC-284.7-303.2± 1.7kJ/mol74.0785 ±
0.0025
4453-91-2*0
Fluoro(fluorooxy)methylene F[C]OF-134.8-136.0± 1.3kJ/mol66.00691 ±
0.00085
479587-30-9*0
Trioxodinitrate anion O=N-[N](=O)[O-]-104.3-107.5± 1.9kJ/mol76.01223 ±
0.00091
194856-62-7*0
Tetraoxidanyl OOO[O]2.00.2± 3.0kJ/mol65.0055 ±
0.0012
69696-93-1*0
Ethylidene [CH]C361.35354.37± 0.76kJ/mol28.0532 ±
0.0016
4218-50-2*0
Oxiranyl anion C1[CH-]O1121.1113.2± 1.6kJ/mol43.0452 ±
0.0016
72722-59-9*0
Propargylenide C#C[CH-]434.4437.6± 1.1kJ/mol38.0485 ±
0.0024
82906-05-6*0
Dinitrogen anion N#[N-]192.5192.5± 1.7kJ/mol28.01403 ±
0.00014
12185-02-3*0
Formylimidogen C(=O)[N]245.3242.2± 4.6kJ/mol43.02478 ±
0.00086
42288-92-6*1
Phosgene cation C(=[O+])(Cl)Cl897.1896.0± 1.7kJ/mol98.9150 ±
0.0020
73249-38-4*0
Phosgene C(=O)(Cl)Cl-242.73± 0.27kJ/mol98.9155 ±
0.0020
75-44-5*501
Phosgene C(=O)(Cl)Cl-255.44-242.73± 0.27kJ/mol98.9155 ±
0.0020
75-44-5*502
Water O-238.648-241.836± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*1
Chloro(chlorooxy)methylene Cl[C]OCl73.573.9± 3.6kJ/mol98.9155 ±
0.0020
479587-31-0*0
Chloro(chlorooxy)methylene Cl[C]OCl98.105.± 15.kJ/mol98.9155 ±
0.0020
479587-31-0*1
Chlorine trifluoride anion F[Cl-](F)F-480.4-481.9± 3.6kJ/mol92.44846 ±
0.00090
184289-50-7*0
Formic acid cation [CH+](=O)O721.87715.34± 0.26kJ/mol46.0248 ±
0.0010
50614-05-6*0
Cyanogen bromide cation Br[C+]#N1331.31325.0± 1.1kJ/mol105.9209 ±
0.0013
34749-77-4*0
Formic acid anion [CH-](=O)O-256.2-262.3± 1.8kJ/mol46.0259 ±
0.0010
19066-82-1*0
Chlorohydroxymethylene Cl[C]OH14.311.4± 3.2kJ/mol64.4707 ±
0.0012
147723-60-2*2
Chlorohydroxymethylene Cl[C]OH13.911.2± 2.6kJ/mol64.4707 ±
0.0012
147723-60-2*0
Nitrogen atom [N]700.555702.458± 0.024kJ/mol14.006740 ±
0.000070
17778-88-0*2
(Chlorooxy)methylene H[C]OCl155.4155.2± 3.7kJ/mol64.4707 ±
0.0012
331419-80-8*1
(Chlorooxy)methylene H[C]OCl119.1117.8± 2.7kJ/mol64.4707 ±
0.0012
331419-80-8*0
Hydrodioxonitrate [NH](=O)[O-]-62.3-68.8± 3.3kJ/mol47.01403 ±
0.00061
61508-71-2*0
Dioxohydrazine O=NN=O192.2188.7± 1.8kJ/mol60.01228 ±
0.00062
16824-89-8*1
Chloroformyl anion Cl[C-]=O-356.5-352.9± 3.3kJ/mol63.4633 ±
0.0012
41976-93-6*0
2-Hydroxyethyl [CH2]CO-13.06-26.32± 0.61kJ/mol45.0605 ±
0.0017
4422-54-2*0
Diazoethenylidene cation [N]=[N]=C=[C+]1771.31773.3± 3.5kJ/mol52.0343 ±
0.0016
*130760-10-0*0
Diazoethenylidene anion [N]=[N]=C=[C-]529.8532.4± 3.5kJ/mol52.0354 ±
0.0016
*130760-11-1*0
Ethylene anion C=[CH2-]232.0225.6± 2.0kJ/mol28.0537 ±
0.0016
34527-91-8*0
Oxoiodonium I[O+]1066.11064.1± 1.9kJ/mol142.90332 ±
0.00030
81182-81-2*0
1-Propen-1-yl-3-ylidene [CH]C=[CH]657.4654.0± 1.5kJ/mol39.0559 ±
0.0024
84654-90-0*0
Hydroxyformyl O[C]=O-181.20-183.74± 0.50kJ/mol45.0174 ±
0.0010
2564-86-5*0
Hydroxyformyl anion [C-](=O)O-319.52-321.38± 0.60kJ/mol45.0180 ±
0.0010
78944-70-4*0
2-Iodoethanol ICCO-132.0-150.2± 2.5kJ/mol171.9650 ±
0.0017
624-76-0*0
Dioxodiazoxane O=NON=O93.088.1± 1.3kJ/mol76.01168 ±
0.00091
122413-35-8*0
Carbonylmethyloxonium CO[C+]=O561.4553.2± 3.2kJ/mol59.0435 ±
0.0017
24434-00-2*0
Hydrogen peroxide cation O[OH+]897.78890.77± 0.37kJ/mol34.01413 ±
0.00062
12325-10-9*12
Methoxyoxomethyl CO[C]=O-152.5-160.2± 1.5kJ/mol59.0440 ±
0.0017
16481-04-2*0
Methoxyoxomethyl CO[C]=O-151.8-160.8± 2.3kJ/mol59.0440 ±
0.0017
16481-04-2*2
Nitrosyl nitrate O=NO[N+](=O)[O-]48.340.4± 1.8kJ/mol92.0111 ±
0.0012
15969-55-8*0
Isocyanomethane C[N+]#[C-]146.5± 2.3kJ/mol41.0520 ±
0.0016
593-75-9*500
Methoxyoxomethyl CO[C]=O-151.6-159.7± 2.3kJ/mol59.0440 ±
0.0017
16481-04-2*3
Difluorodioxidanium FO[O+]F1283.61280.0± 2.3kJ/mol69.99506 ±
0.00060
*7783-44-0*0
Cyclopropane C1CC141.4135.73± 0.54kJ/mol42.0797 ±
0.0024
75-19-4*500
Pentachloroethylium C(Cl)(Cl)(Cl)[C+](Cl)Cl836.1834.5± 3.3kJ/mol201.2844 ±
0.0048
*7094-17-9*0
Oxonium [OH3+]605.90599.08± 0.17kJ/mol19.02267 ±
0.00037
13968-08-6*1
Acetyloxoniumylidene CC(=O)[O+]891.7883.3± 3.0kJ/mol59.0435 ±
0.0017
67057-47-0*1
Pentachloroethanide C(Cl)(Cl)(Cl)[C-](Cl)Cl-283.8-282.3± 3.9kJ/mol201.2854 ±
0.0048
263019-83-6*0
Peroxychlorous acid O=ClOO96.290.6± 2.1kJ/mol84.4588 ±
0.0013
177778-92-6*0
Imidogen [NH]509.34509.39± 0.18kJ/mol15.014680 ±
0.000099
13774-92-0*2
Hydroxyamidogen [NH]O101.594.7± 1.1kJ/mol32.02202 ±
0.00034
13940-32-4*0
Trihydrogen [H]1[H][H]1477.4474.7± 2.3kJ/mol3.02382 ±
0.00021
12184-91-7*201
Trihydrogen [H]1[H][H]1254.5250.7± 1.2kJ/mol3.02382 ±
0.00021
12184-91-7*200
Cyanic fluoride cation F[C+]#N1294.51294.9± 1.1kJ/mol45.01529 ±
0.00080
62532-69-8*0
Fluorosyl fluoride cation FF[O+]1413.01413.4± 3.5kJ/mol53.99566 ±
0.00030
*86825-50-5*0
O--HH Complex [H][H].[O]247.2248.2± 2.0kJ/mol18.01528 ±
0.00033
*7732-18-5*102
Bromine atom [Br]161.998155.935± 0.056kJ/mol79.90400 ±
0.00100
10097-32-2*2
Hydroperoxonium [OH2+]O762.5752.7± 2.0kJ/mol35.02207 ±
0.00064
70850-26-9*2
3-Chloro-3-methyl-3H-diazirine CC1(N=N1)Cl230.218.± 40.kJ/mol90.5114 ±
0.0019
4222-21-3*0
Cyanogen chloride cation Cl[C+]#N1326.021327.35± 0.97kJ/mol61.4696 ±
0.0012
37612-72-9*0
Dicarbon monoxide [C]=C=O377.29381.33± 0.98kJ/mol40.0208 ±
0.0016
12071-23-7*0
Cyanogen iodide cation I[C+]#N1271.51271.3± 1.6kJ/mol152.92136 ±
0.00080
34749-78-5*0
(Formyloxy)methyl O=CO[CH2]-151.9-160.0± 1.3kJ/mol59.0440 ±
0.0017
3122-12-1*0
Isocyanic acid anion [NH-]=C=O-54.2-57.3± 3.0kJ/mol43.02533 ±
0.00086
*444010-28-0*0
Carboxymethyl [CH2]C(=O)O-227.4-237.3± 1.2kJ/mol59.0440 ±
0.0017
2887-46-9*0
Trihydrogen cation [H]1[H+][H]11110.5771106.695± 0.013kJ/mol3.02327 ±
0.00021
28132-48-1*1
Chlorine pentafluoride anion F[Cl-](F)(F)(F)F-619.2-622.7± 4.4kJ/mol130.44526 ±
0.00090
184851-42-1*0
Water O-286.304-285.832± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*499
Propylidyne CC[C]492.4482.8± 1.2kJ/mol41.0718 ±
0.0024
85056-54-8*0
1,2-Dichloroethene C(Cl)=CCl3.45-1.87± 0.54kJ/mol96.9427 ±
0.0024
540-59-0*0
COC vdW [C]=O.[C]590.0598.7± 1.7kJ/mol40.0208 ±
0.0016
*12071-24-8*0
Diazene cation N=[NH+]1132.471125.81± 0.66kJ/mol30.02881 ±
0.00020
76986-17-9*0
Cyclopentadienide [CH-]1C=CC=C1100.087.0± 1.1kJ/mol65.0937 ±
0.0040
12127-83-2*0
Chlorine atom [Cl]130.176131.783± 0.0011kJ/mol35.45270 ±
0.00090
22537-15-1*2
Oxonium [OH3+]-285.830± 0.027kJ/mol19.02267 ±
0.00037
13968-08-6*800
Nitrosyl nitrite anion O=NON=[O-]-103.1-106.2± 2.8kJ/mol76.01223 ±
0.00091
*122413-35-8*0
2-Methoxy-2-oxoethyl [CH2]C(=O)OC-203.4-218.6± 1.6kJ/mol73.0706 ±
0.0025
54668-31-4*0
trans-Cycloheptene C1CCC=CCC1141.5103.5± 1.9kJ/mol96.1702 ±
0.0057
45509-99-7*0
Isocyanogen chloride cation ClN=[C+]1480.81482.0± 3.9kJ/mol61.4696 ±
0.0012
956475-91-5*0
2-Cyclopropyn-1-ylidene C1=C=C=1898.9905.8± 1.6kJ/mol36.0321 ±
0.0024
102508-15-6*0
Trioxidaniumyl O[O+]O925.4916.5± 1.5kJ/mol50.01353 ±
0.00091
161321-37-5*0
Trihydrogen [H]1[H][H]1745.878743.199± 0.062kJ/mol3.02382 ±
0.00021
12184-91-7*0
(Acetyloxy)methyl CC(=O)O[CH2]-200.8-214.5± 1.6kJ/mol73.0706 ±
0.0025
2887-49-2*0
Cyanogen chloride anion ClC#[N-]46.651.0± 3.1kJ/mol61.4707 ±
0.0012
12281-43-5*0
Oxoethylidene [CH]C=O261.2258.4± 1.6kJ/mol42.0367 ±
0.0016
39920-84-8*0
Isocyanic fluoride cation FN=[C+]1618.41619.0± 4.0kJ/mol45.01529 ±
0.00080
*16992-26-0*0
C=O-C cation [C]=[O+][C]1576.21583.3± 2.4kJ/mol40.0203 ±
0.0016
83483-98-1*0
2-Oxo-1-ethylium-1-yl [CH+]C=O1289.51286.8± 2.7kJ/mol42.0361 ±
0.0016
214464-96-7*1
1-Propen-1-yl-3-ylidene [CH]C=[CH]657.4653.8± 2.2kJ/mol39.0559 ±
0.0024
84654-90-0*12
Water O-286.304-292.745± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*509
Phenol cation c1ccc(cc1)[OH+]746.18727.39± 0.65kJ/mol94.1107 ±
0.0048
40932-22-7*0
Phenol anion c1ccc(cc1)[OH-]22.87.9± 4.9kJ/mol94.1118 ±
0.0048
38752-11-3*0
Dichlorovinylidene [C]=C(Cl)Cl421.6424.8± 3.0kJ/mol94.9268 ±
0.0024
20394-25-6*0
Chlorovinylidene [C]=CCl428.0429.8± 3.0kJ/mol60.4820 ±
0.0018
70277-82-6*0
Oxoethylidene anion [CH-]C=O87.084.3± 2.3kJ/mol42.0372 ±
0.0016
106543-38-8*0
Carbon atom [C]2.3911.863± 0.044kJ/mol12.01070 ±
0.00080
7440-44-0*501
Dioxymethylene [CH]O[O]341.8339.8± 3.0kJ/mol45.0174 ±
0.0010
438586-67-5*0
Diazenide N#N.[H-]175.7176.7± 1.6kJ/mol29.02197 ±
0.00016
71004-29-0*0
Benzaldehyde cation c1ccc(cc1)C=[O+]896.7880.1± 1.9kJ/mol106.1214 ±
0.0056
80226-59-1*0
Benzaldehyde anion c1ccc(cc1)C=[O-]-60.3-77.9± 1.2kJ/mol106.1225 ±
0.0056
34473-57-9*0
Cyanic acid cation [OH+]C#N1135.91133.3± 2.9kJ/mol43.02423 ±
0.00086
59780-31-3*0
Hypochloroperoxoous acid, hydroxy ester OOOCl49.142.3± 1.9kJ/mol84.4588 ±
0.0013
928652-99-7*0
Isocyanic fluoride anion FN=[C-]74.376.0± 5.7kJ/mol45.01639 ±
0.00080
357426-78-9*0
Nitrosodioxaziridine O=NN1OO1413.8408.1± 3.2kJ/mol76.01168 ±
0.00091
132871-99-9*2
Oxoniumyl ion [H][O+][H]978.716975.565± 0.028kJ/mol18.01473 ±
0.00033
56583-62-1*2
Oxirene C1=CO1272.91270.76± 0.96kJ/mol42.0367 ±
0.0016
157-18-6*0
1,2-Propadien-1-yl-3-ylidene anion [C]=C=[C-]622.0629.4± 1.3kJ/mol36.0326 ±
0.0024
109292-47-9*1
Oxirene C1=CO1387.9384.5± 1.7kJ/mol42.0367 ±
0.0016
157-18-6*1
Fluoromethane cation C[F+]981.81974.31± 0.62kJ/mol34.03237 ±
0.00083
59122-96-2*0
Hydrobromate ion [BrH-]-6.0-12.5± 4.3kJ/mol80.9125 ±
0.0010
85532-97-4*0
Fluoromethane CF-245.75± 0.45kJ/mol34.03292 ±
0.00083
593-53-3*590
Diazanide N[NH-]249.4239.3± 3.1kJ/mol31.03785 ±
0.00025
25415-88-7*0
Ethynol cation C#[C+]O1063.91061.2± 3.1kJ/mol42.0361 ±
0.0016
84005-02-7*0
Nitrosodioxaziridine O=NN1OO1415.3409.5± 2.8kJ/mol76.01168 ±
0.00091
132871-99-9*3
Chloromethane CCl-106.40-102.44± 0.20kJ/mol50.4872 ±
0.0012
74-87-3*590
Hydroperoxyimidogen OO[N]111.8108.9± 2.8kJ/mol47.01348 ±
0.00061
877456-58-1*2
Methyl bromide cation C[Br+]996.24981.32± 0.18kJ/mol94.9380 ±
0.0013
12538-70-4*0
Ethynol anion C#[C-]O163.6165.1± 3.4kJ/mol42.0372 ±
0.0016
864971-50-6*0
Ethynol C#CO95.492.9± 1.2kJ/mol42.0367 ±
0.0016
32038-79-2*0
Acetone enol C=C(O)C-151.9-168.7± 1.1kJ/mol58.0791 ±
0.0025
29456-04-0*0
Peroxychlorous acid O=ClOO102.396.2± 3.7kJ/mol84.4588 ±
0.0013
177778-92-6*3
Cyanomethylium [CH2+]C#N1255.91253.2± 1.9kJ/mol40.0435 ±
0.0016
34430-18-7*0
Methanediol C(O)O-379.38-392.77± 0.93kJ/mol48.0413 ±
0.0010
463-57-0*0
Hydroperoxonium [OH2+]O738.1727.8± 1.2kJ/mol35.02207 ±
0.00064
70850-26-9*0
Isocyanogen chloride anion ClN=[C-]102.7107.2± 3.9kJ/mol61.4707 ±
0.0012
923019-39-0*0
Peroxyhypochlorous acid cation OO[Cl+]1030.31024.5± 2.5kJ/mol68.4589 ±
0.0011
*67952-07-2*0
Nitrosodioxaziridine O=NN1OO1413.6408.2± 1.8kJ/mol76.01168 ±
0.00091
132871-99-9*0
Ethynol C#CO406.6403.3± 3.2kJ/mol42.0367 ±
0.0016
32038-79-2*12
Oxide [O--]651.653.± 15.kJ/mol16.00050 ±
0.00030
16833-27-5*0
Methyl nitrite CON=O-52.50-64.46± 0.90kJ/mol61.0401 ±
0.0010
624-91-9*1
Methyl nitrite CON=O-88.85± 0.56kJ/mol61.0401 ±
0.0010
624-91-9*500
1,2-Dibromoethene C(Br)=CBr120.9100.8± 2.1kJ/mol185.8453 ±
0.0026
540-49-8*0
Methyl iodide cation C[I+]944.79935.40± 0.18kJ/mol141.93844 ±
0.00083
12538-72-6*0
Ethynol C#CO409.5406.4± 3.2kJ/mol42.0367 ±
0.0016
32038-79-2*13
Ethynol C#CO455.7452.3± 3.2kJ/mol42.0367 ±
0.0016
32038-79-2*14
3H-diazirin-3-ylidene-methylene [C]=C1N=N1837.4840.1± 2.4kJ/mol52.0349 ±
0.0016
204253-88-3*0
2,2,4-Trimethylpentane CC(C)CC(C)(C)C-171.3-223.7± 1.5kJ/mol114.2285 ±
0.0065
540-84-1*0
(Methylamino)methyl anion CN[CH2-]200.9184.0± 3.2kJ/mol44.0763 ±
0.0017
*31277-25-5*0
Ethynol C#CO464.3461.0± 3.2kJ/mol42.0367 ±
0.0016
32038-79-2*15
Peroxyhypochlorous acid anion OO[Cl-]-32.2-34.0± 2.6kJ/mol68.4600 ±
0.0011
*67952-08-3*0
Peroxyformyl C(=O)O[O]-100.46-105.56± 0.93kJ/mol61.0168 ±
0.0012
56240-83-6*0
Diazene cation N=[NH+]1132.471125.53± 0.66kJ/mol30.02881 ±
0.00020
76986-17-9*1
Fluoroform C(F)(F)F-704.34± 0.45kJ/mol70.01385 ±
0.00080
75-46-7*590
Succinic acid OC(=O)CCC(=O)O-795.63-817.77± 0.61kJ/mol118.0880 ±
0.0034
110-15-6*0
Fluorosyl fluoride FF[O]192.6193.1± 2.3kJ/mol53.99621 ±
0.00030
86825-57-2*0
1-Propen-1-yl-3-ylidene [CH]C=[CH]666.4662.9± 2.2kJ/mol39.0559 ±
0.0024
84654-90-0*13
Methoxyethene C=COC-88.9-106.2± 1.1kJ/mol58.0791 ±
0.0025
107-25-5*0
Hydroxymethylene anion [CH-]O147.1144.2± 1.6kJ/mol30.02653 ±
0.00087
207914-87-2*0
Iminomethyl [CH]=N275.82272.22± 0.71kJ/mol28.03332 ±
0.00082
15691-95-9*0
1,1-Dibromoethane CC(Br)Br-67.3± 1.3kJ/mol187.8612 ±
0.0026
557-91-5*500
Iodine monochloride ICl-36.511-35.537± 0.063kJ/mol162.35717 ±
0.00090
7790-99-0*500
(Dimethylamino)methyl anion CN(C)[CH2-]189.5165.3± 3.3kJ/mol58.1029 ±
0.0025
125231-49-4*0
Cyanic fluoride anion FC#[N-]-20.4-18.4± 2.9kJ/mol45.01639 ±
0.00080
34507-50-1*0
Cyanic acid anion [OH-]C#N-9.1-9.4± 3.1kJ/mol43.02533 ±
0.00086
58199-47-6*0
Diazene anion N=[NH-]265.5258.7± 2.0kJ/mol30.02991 ±
0.00020
100429-75-2*0
Chlorous acid cation O[Cl+]=O996.6991.5± 3.1kJ/mol68.4589 ±
0.0011
*99559-66-7*0
Iminomethyl anion [CH-]=N237.4233.6± 1.8kJ/mol28.03387 ±
0.00082
90623-30-6*0
Bromoform C(Br)(Br)Br2.5± 1.3kJ/mol252.7306 ±
0.0031
75-25-2*590
1-Methylethylidene C[C]C316.5303.6± 2.1kJ/mol42.0797 ±
0.0024
40852-89-9*0
Hydrazoic acid anion N=[N]=[N-]309.0303.1± 2.3kJ/mol43.02871 ±
0.00022
203264-98-6*0
Aminomethylidyne anion [C-]N481.6478.0± 3.2kJ/mol28.03387 ±
0.00082
96808-04-7*1
Difluoromethane C(F)F-466.89± 0.38kJ/mol52.02339 ±
0.00081
75-10-5*590
Krypton dication [Kr++]3701.1243701.124± 0.013kJ/mol83.7989 ±
0.1000
18469-91-5*0
Nitrato O=[N+](O)O1290.611285.90± 0.86kJ/mol62.00439 ±
0.00090
133057-96-2*0
Xenon dication [Xe++]3194.143194.14± 0.36kJ/mol131.2889 ±
0.0200
14066-95-6*0
Hydroxymethylene cation [CH+]O971.9968.3± 1.4kJ/mol30.02543 ±
0.00087
135395-06-1*0
Nitrous acid anion O[N-]=O-105.85-109.33± 0.78kJ/mol47.01403 ±
0.00061
256393-36-9*0
Cyanogen N#CC#N274.07289.32± 0.43kJ/mol52.0349 ±
0.0016
460-19-5*500
3-Buten-2-one CC(=O)C=C-95.65-111.19± 0.88kJ/mol70.0898 ±
0.0032
78-94-4*0
Fluorine atom [F]82.09083.875± 0.048kJ/mol18.99840320 ±
0.00000050
14762-94-8*2
3-Buten-2-one CC(=O)C=C-94.1-110.1± 1.6kJ/mol70.0898 ±
0.0032
78-94-4*2
Methoxyethene C=COC-81.5-98.6± 2.4kJ/mol58.0791 ±
0.0025
107-25-5*1
1,3-Butadien-2-ol C=C(O)C=C-48.5-64.8± 2.3kJ/mol70.0898 ±
0.0032
59120-04-6*12
Dioxyamidogen [NH-][O+]=O251.1244.5± 2.5kJ/mol47.01348 ±
0.00061
71843-95-3*1
1,3-Butadien-2-ol C=C(O)C=C-38.3-54.7± 2.3kJ/mol70.0898 ±
0.0032
59120-04-6*22
Diazene anion N=[NH-]265.5258.7± 2.0kJ/mol30.02991 ±
0.00020
100429-75-2*1
1,3-Butadien-2-ol C=C(O)C=C-43.1-59.2± 2.3kJ/mol70.0898 ±
0.0032
59120-04-6*2
1,3-Butadien-2-ol C=C(O)C=C-53.8-68.7± 1.6kJ/mol70.0898 ±
0.0032
59120-04-6*0
Diiodine cation I[I+]963.523960.408± 0.018kJ/mol253.808391 ±
0.000060
28712-14-3*0
Methane anion [CH4-]27.319.4± 5.1kJ/mol16.04301 ±
0.00085
27680-53-1*0
1-Propen-1-yl-3-ylidene [CH]C=[CH]699.9697.0± 3.5kJ/mol39.0559 ±
0.0024
84654-90-0*2
O--HH Complex [H][H].[O]247.6248.9± 2.7kJ/mol18.01528 ±
0.00033
*7732-18-5*101
Isocyanogen anion [C-]#[N]C#N385.5387.6± 3.4kJ/mol52.0354 ±
0.0016
*83951-85-3*0
Peroxyformate C(=O)O[O-]-341.00-346.45± 0.96kJ/mol61.0174 ±
0.0012
104960-05-6*0
Diisocyanogen cation [C]#[N+][N+]#[C-]1825.11828.3± 3.2kJ/mol52.0343 ±
0.0016
*78800-21-2*0
1,2-Propadien-1-one anion C=C=C=[O-]49.548.3± 3.1kJ/mol54.0479 ±
0.0024
159171-62-7*0
Ethoxyethene C=COCC-117.4-135.9± 1.5kJ/mol72.1057 ±
0.0033
109-92-2*0
Perchloric acid cation O[Cl+](=O)(=O)=O1191.81182.2± 3.5kJ/mol100.4577 ±
0.0015
91712-47-9*0
Water anion [H][O-][H]-50.1-53.0± 4.3kJ/mol18.01583 ±
0.00033
12259-30-2*0
2-Cyclopropen-1-one cation O=[C+]1C=C11078.61075.2± 2.0kJ/mol54.0468 ±
0.0024
100815-68-7*0
Ethenol C=CO-112.73-123.16± 0.66kJ/mol44.0526 ±
0.0017
557-75-5*0
Methylaminyliumyl C[N+]1423.01416.1± 2.6kJ/mol29.04071 ±
0.00083
56924-51-7*2
Neon dication [Ne++]6032.9886033.214± 0.0041kJ/mol20.17860 ±
0.00060
14041-55-5*0
Neon trication [Ne+3]12152.40312152.403± 0.033kJ/mol20.17805 ±
0.00060
14158-25-9*0
Neon tetracation [Ne+4]21529.8221531.45± 0.25kJ/mol20.17751 ±
0.00060
14041-56-6*0
Neon pentacation [Ne+5]33711.133711.1± 1.2kJ/mol20.17696 ±
0.00060
14175-48-5*0
Neon hexacation [Ne+6]48949.348949.3± 1.3kJ/mol20.17641 ±
0.00060
14041-57-7*0
Neon heptacation [Ne+7]68948.768948.7± 1.5kJ/mol20.17586 ±
0.00060
14175-50-9*0
Neon octacation [Ne+8]92018.292018.2± 1.5kJ/mol20.17531 ±
0.00060
14782-26-4*0
Neon nonacation [Ne+9]207396.1207396.1± 1.5kJ/mol20.17476 ±
0.00060
15721-59-2*0
Neon cation [Ne+]2080.6622080.769± 0.000kJ/mol20.17915 ±
0.00060
14782-23-1*0
Neon decacation [Ne+10]338828.3338828.3± 1.5kJ/mol20.17421 ±
0.00060
32218-07-8*0
Argon dimer cation [Ar][Ar+]1393.7601391.173± 0.018kJ/mol79.8955 ±
0.0020
17596-58-6*0
Argon cation [Ar+]1520.5711520.580± 0.000kJ/mol39.94745 ±
0.00100
14791-69-6*0
Argon dimer [Ar][Ar]-1.013-6.347± 0.0051kJ/mol79.8960 ±
0.0020
12595-59-4*0
Helium cation [He+]2372.3222372.322± 0.000kJ/mol4.0020534 ±
0.0000020
14234-48-1*0
Helium dication [He++]7622.8397622.839± 0.000kJ/mol4.0015048 ±
0.0000020
12587-46-1*0
Helium anion [He-]51.51.± 130.kJ/mol4.0031506 ±
0.0000020
14452-58-5*1
Helium anion [He-]51.51.± 130.kJ/mol4.0031506 ±
0.0000020
14452-58-5*0
Argon anion [Ar-]23.23.± 75.kJ/mol39.94855 ±
0.00100
16544-90-4*1
Argon anion [Ar-]23.23.± 75.kJ/mol39.94855 ±
0.00100
16544-90-4*0
Helium anion [He-]1868.431868.43± 0.11kJ/mol4.0031506 ±
0.0000020
14452-58-5*2
Helium anion [He-]1904.8231904.824± 0.0011kJ/mol4.0031506 ±
0.0000020
14452-58-5*3
Helium anion [He-]5724.95724.9± 1.5kJ/mol4.0031506 ±
0.0000020
14452-58-5*4
Argon anion [Ar-]1111.1161111.116± 0.098kJ/mol39.94855 ±
0.00100
16544-90-4*2
Hydron [H+]00exact1.007391 ±
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 21st 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. 1.122h of the Thermochemical Network (2020); available at ATcT.anl.gov
4   J. P. Porterfield, D. H. Bross, B. Ruscic, J. H. Thorpe, T. L. Nguyen, J. H. Baraban, J. F. Stanton, J. W. Daily, and G. B. Ellison,
Thermal Decomposition of Potential Ester Biofuels, Part I: Methyl Acetate and Methyl Butanoate.
J. Chem. Phys. A 121, 4658-4677 (2017) [DOI: 10.1021/acs.jpca.7b02639] (Veronica Vaida Festschrift)
5   Y.-C. Chang, B. Xiong, D. H. Bross, B. Ruscic, and C. Y. Ng,
A Vacuum Ultraviolet laser Pulsed Field Ionization-Photoion Study of Methane (CH4): Determination of the Appearance Energy of Methylium From Methane with Unprecedented Precision and the Resulting Impact on the Bond Dissociation Energies of CH4 and CH4+.
Phys. Chem. Chem. Phys. 19, 9592-9605 (2017) [DOI: 10.1039/c6cp08200a] (part of 2017 PCCP Hot Articles collection)
6   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]

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

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

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

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