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

Below is a list of 0 K and 298.15 K enthalpies of formation for all 1199 species included in version 1.122b (as of 09/05/2016).
This version of ATcT results was generated from an expansion of version 1.122 [4][5] to include the best possible isomerization of HCN and HNC [6].

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.)



          
          
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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]711.401716.886± 0.050kJ/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]470.578472.440± 0.024kJ/mol14.006740 ±
0.000070
17778-88-0*0
Carbon dioxide C(=O)=O-393.109-393.475± 0.015kJ/mol44.00950 ±
0.00100
124-38-9*0
Fluorine atom [F]77.26379.369± 0.048kJ/mol18.99840320 ±
0.00000050
14762-94-8*0
Methane C-66.550-74.519± 0.057kJ/mol16.04246 ±
0.00085
74-82-8*0
Water O-286.300-285.828± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*500
Water O-238.930-241.833± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*0
Chlorine atom [Cl]119.621121.302± 0.0011kJ/mol35.45270 ±
0.00090
22537-15-1*0
Bromine atom [Br]117.917111.854± 0.056kJ/mol79.90400 ±
0.00100
10097-32-2*0
Ethane CC-68.29-83.91± 0.14kJ/mol30.0690 ±
0.0017
74-84-0*0
Hydron [H+]1528.0841530.047± 0.000kJ/mol1.007391 ±
0.000070
12408-02-5*0
Hydroxyl [OH]37.25037.490± 0.027kJ/mol17.00734 ±
0.00031
3352-57-6*0
Ethylene C=C60.9652.45± 0.13kJ/mol28.0532 ±
0.0016
74-85-1*0
Carbon monoxide [C-]#[O+]-113.803-110.523± 0.026kJ/mol28.01010 ±
0.00085
630-08-0*0
Hydrogen chloride Cl-91.989-92.173± 0.0062kJ/mol36.46064 ±
0.00090
7647-01-0*0
Methyl [CH3]149.788146.374± 0.080kJ/mol15.03452 ±
0.00083
2229-07-4*0
Hydrogen bromide Br-27.81-35.66± 0.16kJ/mol80.9119 ±
0.0010
10035-10-6*0
Methanol CO-189.82-200.71± 0.16kJ/mol32.04186 ±
0.00090
67-56-1*0
Hydrogen fluoride F-272.668-272.715± 0.049kJ/mol20.006343 ±
0.000070
7664-39-3*0
Iodine atom [I]107.157106.757± 0.0021kJ/mol126.904470 ±
0.000030
14362-44-8*0
Formaldehyde C=O-105.349-109.188± 0.099kJ/mol30.02598 ±
0.00087
50-00-0*0
Acetylene C#C228.83228.27± 0.14kJ/mol26.0373 ±
0.0016
74-86-2*0
Nitric oxide [N]=O90.61791.121± 0.065kJ/mol30.00614 ±
0.00031
10102-43-9*0
Ethanol CCO-216.89-234.61± 0.21kJ/mol46.0684 ±
0.0017
64-17-5*0
Methyl chloride CCl-74.25-82.18± 0.25kJ/mol50.4872 ±
0.0012
74-87-3*0
Ethyl C[CH2]130.92119.86± 0.28kJ/mol29.0611 ±
0.0016
2025-56-1*0
Propane CCC-82.75-105.03± 0.19kJ/mol44.0956 ±
0.0025
74-98-6*0
Nitrogen dioxide O=[N]=O36.85634.049± 0.065kJ/mol46.00554 ±
0.00060
10102-44-0*0
Ammonia N-38.562-45.554± 0.030kJ/mol17.03056 ±
0.00022
7664-41-7*0
Hydrogen cyanide C#N129.660129.275± 0.091kJ/mol27.02538 ±
0.00081
74-90-8*0
Hydrogen iodide I28.64126.466± 0.036kJ/mol127.912410 ±
0.000076
10034-85-2*0
Methyl fluoride CF-227.77-235.80± 0.23kJ/mol34.03292 ±
0.00083
593-53-3*0
Methyl bromide CBr-20.36-35.76± 0.27kJ/mol94.9385 ±
0.0013
74-83-9*0
Hydrogen peroxide OO-129.471-135.457± 0.064kJ/mol34.01468 ±
0.00062
7722-84-1*0
Hydroxyde [OH-]-139.091-139.058± 0.027kJ/mol17.00789 ±
0.00031
14280-30-9*0
Dioxidanyl O[O]15.1612.26± 0.16kJ/mol33.00674 ±
0.00060
3170-83-0*0
Propylene CC=C35.0019.99± 0.22kJ/mol42.0797 ±
0.0024
115-07-1*0
Tetrafluoromethane C(F)(F)(F)F-927.41-933.39± 0.25kJ/mol88.00431 ±
0.00080
75-73-0*0
Fluoride [F-]-250.901-249.117± 0.048kJ/mol18.99895178 ±
0.00000050
16984-48-8*0
Hypochlorous acid OCl-73.867-76.807± 0.028kJ/mol52.46004 ±
0.00095
7790-92-3*0
Acetaldehyde CC=O-154.97-165.45± 0.28kJ/mol44.0526 ±
0.0017
75-07-0*0
Benzene c1ccccc1100.6283.11± 0.25kJ/mol78.1118 ±
0.0048
71-43-2*0
Dibromine BrBr45.6830.89± 0.11kJ/mol159.8080 ±
0.0020
7726-95-6*0
Diiodine II65.49762.417± 0.0041kJ/mol253.808940 ±
0.000060
7553-56-2*0
Methylidyne [CH]592.78596.12± 0.11kJ/mol13.01864 ±
0.00080
3315-37-5*0
Formic acid C(=O)O-371.12-378.45± 0.22kJ/mol46.0254 ±
0.0010
64-18-6*1
Fluoroform C(F)(F)F-688.92-695.87± 0.43kJ/mol70.01385 ±
0.00080
75-46-7*0
Oxonium [OH3+]605.85599.10± 0.17kJ/mol19.02267 ±
0.00037
13968-08-6*0
Hypoflorous acid OF-84.37-87.27± 0.19kJ/mol36.00574 ±
0.00031
14034-79-8*0
Hypobromous acid OBr-51.38-61.85± 0.57kJ/mol96.9113 ±
0.0010
13517-11-8*0
Methyl iodide CI24.4814.94± 0.17kJ/mol141.93899 ±
0.00083
74-88-4*0
Trifluoromethyl [C](F)(F)F-465.15-467.94± 0.49kJ/mol69.00591 ±
0.00080
2264-21-3*0
Propyne CC#C192.80185.74± 0.25kJ/mol40.0639 ±
0.0024
74-99-7*0
Methylene [CH2]390.96391.52± 0.12kJ/mol14.02658 ±
0.00081
2465-56-7*1
Methylene [CH2]428.62429.03± 0.13kJ/mol14.02658 ±
0.00081
2465-56-7*2
Vinyl C=[CH]301.11296.91± 0.33kJ/mol27.0452 ±
0.0016
2669-89-8*0
Ketene C=C=O-45.45-48.57± 0.13kJ/mol42.0367 ±
0.0016
463-51-4*0
Tetrachloromethane C(Cl)(Cl)(Cl)Cl-94.27-96.44± 0.64kJ/mol153.8215 ±
0.0037
56-23-5*0
Imidogen [NH]358.73358.77± 0.17kJ/mol15.014680 ±
0.000099
13774-92-0*0
Allene C=C=C197.34189.85± 0.26kJ/mol40.0639 ±
0.0024
463-49-0*0
n-Butane CCCC-98.63-125.94± 0.27kJ/mol58.1222 ±
0.0033
106-97-8*0
Difluorophosgene C(F)(F)=O-603.50-606.60± 0.46kJ/mol66.00691 ±
0.00085
353-50-4*0
Bromide [Br-]-206.620-212.683± 0.056kJ/mol79.90455 ±
0.00100
24959-67-9*0
Oxomethylium [CH+]=O827.802827.217± 0.099kJ/mol29.01749 ±
0.00086
17030-74-9*0
Iodide [I-]-187.995-188.396± 0.0021kJ/mol126.905019 ±
0.000030
20461-54-5*0
Nitric acid O[N+](=O)[O-]-124.48-134.19± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*0
Formyl [CH]=O41.42641.803± 0.099kJ/mol29.01804 ±
0.00086
2597-44-6*0
Hydroxymethyl [CH2]O-10.26-16.57± 0.33kJ/mol31.03392 ±
0.00088
2597-43-5*0
Chloroxyl radical Cl=O101.124101.715± 0.035kJ/mol51.45210 ±
0.00095
14989-30-1*0
Methylium [CH3+]1099.2431095.299± 0.078kJ/mol15.03397 ±
0.00083
14531-53-4*0
Ozone O=[O+][O-]144.396141.733± 0.039kJ/mol47.99820 ±
0.00090
10028-15-6*0
Cyanogen chloride ClC#N135.03135.72± 0.44kJ/mol61.4701 ±
0.0012
506-77-4*0
Phenyl c1cccc[c]1350.37337.08± 0.57kJ/mol77.1039 ±
0.0048
2396-01-2*0
Ethylium [CH2+]1[CH2][H]1915.03902.95± 0.32kJ/mol29.0606 ±
0.0016
14936-94-8*0
Methoxide C[O-]-122.54-130.27± 0.35kJ/mol31.03447 ±
0.00088
3315-60-4*0
Methoxy C[O]28.9021.53± 0.34kJ/mol31.03392 ±
0.00088
2143-68-2*0
Tetrabromomethane C(Br)(Br)(Br)Br131.5101.9± 1.1kJ/mol331.6267 ±
0.0041
558-13-4*0
Oxygen atom anion [O-]105.868108.097± 0.0021kJ/mol15.99995 ±
0.00030
14337-01-0*0
Nitrilomethyl [C]#N436.73440.01± 0.15kJ/mol26.01744 ±
0.00080
2074-87-5*0
Cyanogen fluoride FC#N8.889.21± 0.68kJ/mol45.01584 ±
0.00080
1495-50-7*0
Chloride [Cl-]-228.953-227.346± 0.0021kJ/mol35.45325 ±
0.00090
16887-00-6*0
Trihydrogen cation [H]1[H+][H]11110.3041106.696± 0.013kJ/mol3.02327 ±
0.00021
28132-48-1*0
Cyanogen bromide BrC#N187.41180.62± 0.73kJ/mol105.9214 ±
0.0013
506-68-3*0
Methylene fluoride C(F)F-443.16-450.73± 0.36kJ/mol52.02339 ±
0.00081
75-10-5*0
2-Propynyl [CH2]C#C354.00351.44± 0.38kJ/mol39.0559 ±
0.0024
2932-78-7*0
Propynylidene [CH]=C=[CH]543.38546.37± 0.63kJ/mol38.0480 ±
0.0024
67152-18-5*1
Dioxymethyl [O-]\[O+]=C112.43105.42± 0.61kJ/mol46.0254 ±
0.0010
56077-92-0*0
Oxygen atom cation [O+]1560.7861562.644± 0.0021kJ/mol15.99885 ±
0.00030
14581-93-2*0
Hypochlorite [Cl-]=O-118.60-118.33± 0.13kJ/mol51.45265 ±
0.00095
14380-61-1*0
1,2-Propadiene-1,3-diylidene [C]=C=[C]814.52823.47± 0.54kJ/mol36.0321 ±
0.0024
12075-35-3*0
Allyl C=C[CH2]179.56167.84± 0.54kJ/mol41.0718 ±
0.0024
1981-80-2*0
1-Hydroxyethyl C[CH]O-42.17-55.59± 0.61kJ/mol45.0605 ±
0.0017
2348-46-1*1
2-Hydroxyethyl [CH2]CO-12.79-26.06± 0.61kJ/mol45.0605 ±
0.0017
4422-54-2*1
Ethyl chloride CCCl-96.76-111.35± 0.20kJ/mol64.5138 ±
0.0019
75-00-3*0
Hydride [H-]143.264145.228± 0.000kJ/mol1.008489 ±
0.000070
12184-88-2*0
Oxygen difluoride FOF26.9424.68± 0.25kJ/mol53.99621 ±
0.00030
7783-41-7*0
Methylenimine C=N96.5388.62± 0.63kJ/mol29.04126 ±
0.00083
2053-29-4*0
Methylamine CN-5.97-21.05± 0.46kJ/mol31.05714 ±
0.00088
74-89-5*0
Nitrite O=[N-]=O-182.69-185.50± 0.45kJ/mol46.00609 ±
0.00060
14797-65-0*0
Nitrosyl hydride N=O109.93106.96± 0.11kJ/mol31.01408 ±
0.00032
14332-28-6*0
Nitrous acid N(=O)O-73.018-79.161± 0.079kJ/mol47.01348 ±
0.00061
7782-77-6*1
Ethynylene [C]=[C]820.21828.67± 0.27kJ/mol24.0214 ±
0.0016
12070-15-4*0
Ethynyl [CH][C]563.87567.99± 0.15kJ/mol25.0293 ±
0.0016
2122-48-7*0
Ethoxide CC[O-]-164.14-179.08± 0.52kJ/mol45.0610 ±
0.0017
16331-64-9*0
Chloroform C(Cl)(Cl)Cl-98.49-103.39± 0.64kJ/mol119.3767 ±
0.0028
67-66-3*0
Methylene chloride C(Cl)Cl-87.85-94.71± 0.59kJ/mol84.9320 ±
0.0020
75-09-2*0
Tetrafluoroethylene C(=C(F)F)(F)F-671.52-674.93± 0.57kJ/mol100.0150 ±
0.0016
116-14-3*0
Phenylium c1cccc[c+]11148.471136.57± 0.89kJ/mol77.1034 ±
0.0048
17333-73-2*0
Hypoiodous acid OI-56.6-61.3± 2.0kJ/mol143.91181 ±
0.00031
14332-21-9*0
Amidogen [NH2]188.91186.02± 0.12kJ/mol16.02262 ±
0.00016
13770-40-6*0
Methanium [CH5+]922.07911.83± 0.44kJ/mol17.04985 ±
0.00087
15135-49-6*0
Hydroxylamine NO-33.12-43.50± 0.49kJ/mol33.02996 ±
0.00037
7803-49-8*1
Oxirane C1OC1-40.00-52.54± 0.38kJ/mol44.0526 ±
0.0017
75-21-8*0
Methyl hydroperoxide COO-114.90-127.72± 0.74kJ/mol48.0413 ±
0.0010
3031-73-0*0
Hydroxyformyl O[C]=O-180.96-183.92± 0.48kJ/mol45.0174 ±
0.0010
2564-86-5*1
Isocyanic acid N=C=O-115.85-118.85± 0.31kJ/mol43.02478 ±
0.00086
75-13-8*0
Tetraiodomethane C(I)(I)(I)I340.8335.7± 1.3kJ/mol519.62858 ±
0.00081
507-25-5*0
Chlorotrifluoromethane C(F)(F)(F)Cl-704.97-710.08± 0.72kJ/mol104.4586 ±
0.0012
75-72-9*0
Bromotrifluoromethane C(F)(F)(F)Br-639.45-651.57± 0.50kJ/mol148.9099 ±
0.0013
75-63-8*0
Fluoromethylidyne [C]F243.11246.71± 0.13kJ/mol31.00910 ±
0.00080
3889-75-6*0
Fluoroxyl radical [O]F110.26110.88± 0.15kJ/mol34.99780 ±
0.00030
12061-70-0*0
Dioxygen cation O=[O+]1164.5851165.221± 0.0092kJ/mol31.99825 ±
0.00060
12185-07-8*0
Methylidyne [CH]664.55667.88± 0.59kJ/mol13.01864 ±
0.00080
3315-37-5*2
Ethoxy CC[O]1.13-12.77± 0.51kJ/mol45.0605 ±
0.0017
2154-50-9*51
Cyanato N#C[O]127.02127.49± 0.35kJ/mol42.01684 ±
0.00086
22400-26-6*0
Phosgene C(=O)(Cl)Cl-217.43-219.13± 0.27kJ/mol98.9155 ±
0.0020
75-44-5*0
Bromoform C(Br)(Br)Br74.348.1± 1.3kJ/mol252.7306 ±
0.0031
75-25-2*0
Vinyl chloride C=CCl29.5722.10± 0.34kJ/mol62.4979 ±
0.0018
75-01-4*0
Acetone CC(=O)C-199.45-216.14± 0.36kJ/mol58.0791 ±
0.0025
67-64-1*0
Hydrogen fluoride F-334.51± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*800
Hypobromite Br[O-]-96.24-103.73± 0.55kJ/mol95.9039 ±
0.0010
14380-62-2*0
Diazenylium N#[NH+]1042.781039.17± 0.73kJ/mol29.02087 ±
0.00016
12357-66-3*0
Peroxynitrous acid OON=O-5.99-14.43± 0.36kJ/mol63.01288 ±
0.00091
14691-52-2*3
Dioxygenyl fluoride FO[O]26.7525.04± 0.27kJ/mol50.99720 ±
0.00060
15499-23-7*0
Cyclopropane C1CC170.8053.65± 0.46kJ/mol42.0797 ±
0.0024
75-19-4*0
Propadienylidene C=C=[C]554.44555.59± 0.42kJ/mol38.0480 ±
0.0024
60731-10-4*0
Acetyl C[C]=O-3.32-9.98± 0.37kJ/mol43.0446 ±
0.0016
3170-69-2*0
Methylperoxy CO[O]22.2912.54± 0.49kJ/mol47.0333 ±
0.0010
2143-58-0*0
Ethyl fluoride CCF-257.29-272.16± 0.37kJ/mol48.0595 ±
0.0016
353-36-6*0
Ethyl bromide CCBr-41.14-63.09± 0.26kJ/mol108.9651 ±
0.0019
74-96-4*0
Vinyl fluoride C=CF-134.71-142.51± 0.47kJ/mol46.0436 ±
0.0016
75-02-5*0
Vinyl bromide C=CBr88.8274.01± 0.59kJ/mol106.9492 ±
0.0019
593-60-2*0
2-Bromoethanol BrCCO-196.56-220.63± 0.54kJ/mol124.9645 ±
0.0019
540-51-2*0
Fluorobenzene c1ccc(cc1)F-99.29-114.97± 0.83kJ/mol96.1023 ±
0.0048
462-06-6*0
Nitromethane C[N+](=O)[O-]-60.86-74.76± 0.47kJ/mol61.0401 ±
0.0010
75-52-5*0
Dioxidanide O[O-]-88.86-91.52± 0.38kJ/mol33.00729 ±
0.00060
14691-59-9*0
Nitrous oxide [N-]=[N+]=O85.99882.569± 0.097kJ/mol44.01288 ±
0.00033
10024-97-2*0
(E)-Diazene [H]/N=N/[H]207.35200.21± 0.44kJ/mol30.02936 ±
0.00020
15626-43-4*0
Hydroxyoxomethylium O[C+]=O600.76597.68± 0.43kJ/mol45.0169 ±
0.0010
638-71-1*0
Vinylium [CH+]1[CH][H]11119.201115.75± 0.57kJ/mol27.0447 ±
0.0016
14604-48-9*0
Hydroxymethylium [CH2+]O717.85709.91± 0.19kJ/mol31.03337 ±
0.00088
18682-95-6*0
Cyanogen N#CC#N308.17310.12± 0.43kJ/mol52.0349 ±
0.0016
460-19-5*0
Cyanogen iodide IC#N222.47221.95± 0.99kJ/mol152.92191 ±
0.00080
506-78-5*0
iso-Propyl C[CH]C105.2888.68± 0.67kJ/mol43.0877 ±
0.0024
2025-55-0*0
Ethynide [CH][C-]277.42280.83± 0.19kJ/mol25.0299 ±
0.0016
29075-95-4*0
iso-Butane CC(C)C-106.17-134.78± 0.33kJ/mol58.1222 ±
0.0033
75-28-5*0
n-Pentane CCCCC-114.47-146.34± 0.31kJ/mol72.1488 ±
0.0041
109-66-0*0
2-Chloroethanol ClCCO-250.03-266.74± 0.61kJ/mol80.5132 ±
0.0019
107-07-3*0
Hypofluorite [O-]F-108.90-108.73± 0.48kJ/mol34.99835 ±
0.00030
12763-66-5*0
Hydrogen chloride Cl-166.454± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*834
Bromoxyl radical Br[O]131.12123.59± 0.29kJ/mol95.9034 ±
0.0010
15656-19-6*0
Hydroxyamidogen [NH]O101.594.7± 1.0kJ/mol32.02202 ±
0.00034
13940-32-4*1
Nitrate O=[N+]([O-])[O-]-300.25-306.72± 0.61kJ/mol62.00549 ±
0.00090
14797-55-8*0
Water O-285.828± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*590
Formyl anion [CH-]=O11.6212.01± 0.43kJ/mol29.01859 ±
0.00086
57340-31-5*0
Propyl CC[CH2]117.92100.81± 0.61kJ/mol43.0877 ±
0.0024
2143-61-5*0
2-Propynylidyne C#C[C]717.95722.30± 0.81kJ/mol37.0400 ±
0.0024
53590-28-6*0
Dicarbon monoxide [C]=C=O454.95459.28± 0.88kJ/mol40.0208 ±
0.0016
12071-23-7*2
Methanetetraylbisamidogen [N]=C=[N]450.39450.80± 0.68kJ/mol40.02418 ±
0.00081
2669-76-3*0
Methylene bromide C(Br)Br24.93.5± 1.1kJ/mol173.8346 ±
0.0022
74-95-3*0
2-Fluoroethanol FCCO-406.8-424.0± 1.1kJ/mol64.0589 ±
0.0017
371-62-0*0
Phenide c1cccc[c-]1244.70231.79± 0.43kJ/mol77.1044 ±
0.0048
30922-78-2*0
Bromobenzene c1ccc(cc1)Br126.5104.5± 1.3kJ/mol157.0079 ±
0.0049
108-86-1*0
Hydrogen bromide Br-120.80± 0.16kJ/mol80.9119 ±
0.0010
10035-10-6*800
Iodine monochloride ICl19.02417.391± 0.013kJ/mol162.35717 ±
0.00090
7790-99-0*0
Iodotrifluoromethane C(F)(F)(F)I-583.99-589.87± 0.54kJ/mol195.91038 ±
0.00080
2314-97-8*0
Nitrogen atom cation [N+]1872.9061875.687± 0.024kJ/mol14.006191 ±
0.000070
14158-23-7*0
Azido radical [N]N=[N]452.24449.65± 0.58kJ/mol42.02022 ±
0.00021
12596-60-0*0
Trinitrogen cation [N]N=[N+]1519.391516.86± 0.87kJ/mol42.01967 ±
0.00021
12185-03-4*0
Oxonitrate anion N#[O-]87.9187.94± 0.12kJ/mol30.00669 ±
0.00031
14967-78-3*0
Carbon monoxide cation [C]#[O+]1238.3071241.586± 0.026kJ/mol28.00955 ±
0.00085
12144-04-6*0
Nitrosyl ion N#[O+]984.485984.480± 0.065kJ/mol30.00559 ±
0.00031
14452-93-8*0
Nitroxyl N[O]71.3464.73± 0.85kJ/mol32.02202 ±
0.00034
13408-29-2*0
Hydrazoic acid N=[N+]=[N-]297.92291.62± 0.48kJ/mol43.02816 ±
0.00022
7782-79-8*0
Ethonium [CH3+][H][CH3]874.54858.27± 0.61kJ/mol31.0764 ±
0.0017
24669-33-8*1
Acetylium C[C+]=O667.18660.02± 0.65kJ/mol43.0441 ±
0.0016
15762-07-9*0
Hydroxymethylene [CH]O112.40108.63± 0.33kJ/mol30.02598 ±
0.00087
19710-56-6*1
Carbonic acid OC(=O)O-602.78-612.95± 0.79kJ/mol62.0248 ±
0.0012
463-79-6*1
1-Butene CCC=C20.88-0.08± 0.38kJ/mol56.1063 ±
0.0032
106-98-9*0
n-Hexane CCCCCC-130.05-166.93± 0.34kJ/mol86.1754 ±
0.0049
110-54-3*0
1-Hydroxyethylium C[CH+]O609.14594.72± 0.39kJ/mol45.0600 ±
0.0017
18682-96-7*1
Ethoxy CC[O]5.38-9.05± 0.51kJ/mol45.0605 ±
0.0017
2154-50-9*52
Dicarbon monoxide [C]=C=O376.30380.34± 0.97kJ/mol40.0208 ±
0.0016
12071-23-7*1
Formic acid C(=O)O-354.76-362.00± 0.38kJ/mol46.0254 ±
0.0010
64-18-6*2
Formyloxidanyl C(=O)[O]-124.76-126.42± 0.55kJ/mol45.0174 ±
0.0010
16499-21-1*1
Formate C(=O)[O-]-462.11-465.75± 0.55kJ/mol45.0180 ±
0.0010
71-47-6*0
Chlorodifluoromethane C(F)(F)Cl-476.5-482.6± 1.2kJ/mol86.4681 ±
0.0012
75-45-6*0
Fluoromethylene [CH]F148.26148.54± 0.44kJ/mol32.01704 ±
0.00080
13453-52-6*2
Fluoroformyl F[C]=O-176.70-176.12± 0.38kJ/mol47.00850 ±
0.00085
1871-24-5*0
Benzaldehyde c1ccc(cc1)C=O-19.16-36.96± 0.92kJ/mol106.1219 ±
0.0056
100-52-7*0
Chlorobenzene c1ccc(cc1)Cl67.1352.18± 0.61kJ/mol112.5566 ±
0.0049
108-90-7*0
Hydrogen chloride Cl-166.994± 0.023kJ/mol36.46064 ±
0.00090
7647-01-0*800
Bromonium [H][BrH+]925.4914.7± 1.2kJ/mol81.9193 ±
0.0010
36658-54-5*0
Hydrogen peroxide cation O[OH+]896.87889.89± 0.57kJ/mol34.01413 ±
0.00062
12325-10-9*1
Amide [NH2+]114.88112.00± 0.33kJ/mol16.02317 ±
0.00016
17655-31-1*0
Hydrazine NN111.8497.68± 0.49kJ/mol32.04524 ±
0.00031
302-01-2*0
Fluoronium [H][F+][H]774.42771.47± 0.85kJ/mol21.01373 ±
0.00014
12206-67-6*0
Methanide [CH3-]146.05142.61± 0.91kJ/mol15.03507 ±
0.00083
15194-58-8*0
Trioxidane OOO-81.43-90.27± 0.70kJ/mol50.01408 ±
0.00091
14699-99-1*1
Ethylidene [CH]C361.45354.45± 0.82kJ/mol28.0532 ±
0.0016
4218-50-2*1
Peroxyformic acid C(=O)OO-279.8-289.1± 1.1kJ/mol62.0248 ±
0.0012
107-32-4*1
1-Methylethenyl C[C]=C262.90252.56± 0.71kJ/mol41.0718 ±
0.0024
15552-77-9*0
Isobutene CC(=C)C3.92-17.15± 0.44kJ/mol56.1063 ±
0.0032
115-11-7*0
trans-2-Butene C/C=C/C9.26-11.30± 0.41kJ/mol56.1063 ±
0.0032
624-64-6*0
cis-2-Butene C/C=C\C13.95-7.32± 0.42kJ/mol56.1063 ±
0.0032
590-18-1*0
1,3-Butadiene C=CC=C125.05110.57± 0.42kJ/mol54.0904 ±
0.0032
106-99-0*0
Cyclopentane C1CCCC1-45.01-77.58± 0.44kJ/mol70.1329 ±
0.0041
287-92-3*0
1,3-Cyclopentadiene C1C=CC=C1149.89132.77± 0.76kJ/mol66.1011 ±
0.0040
542-92-7*0
1-Hydroxyethyl C[CH]O-40.66-54.13± 0.86kJ/mol45.0605 ±
0.0017
2348-46-1*2
Protonated oxirane [OH+]1CC1725.29709.12± 0.64kJ/mol45.0600 ±
0.0017
*38607-31-7*0
Oxoethenyl [CH]=C=O176.85177.96± 0.60kJ/mol41.0287 ±
0.0016
51095-15-9*0
Methanediol C(O)O-379.05-393.25± 0.95kJ/mol48.0413 ±
0.0010
463-57-0*1
Acetyl chloride CC(=O)Cl-232.68-241.55± 0.33kJ/mol78.4973 ±
0.0019
75-36-5*0
Methyl formate COC=O-344.75-357.80± 0.58kJ/mol60.0520 ±
0.0017
107-31-3*1
Trioxidanide OO[O-]-121.0-124.0± 1.4kJ/mol49.00669 ±
0.00090
89965-38-8*2
Difluorodichloromethane C(F)(F)(Cl)Cl-490.69-495.46± 0.97kJ/mol120.9129 ±
0.0020
75-71-8*0
Fluorodichloromethane C(F)(Cl)Cl-278.9-284.3± 1.2kJ/mol102.9224 ±
0.0020
75-43-4*0
Trifluoromethylium [C+](F)(F)F409.00405.93± 0.51kJ/mol69.00536 ±
0.00080
18851-76-8*0
Methyl nitrite CON=O-55.46-67.24± 0.46kJ/mol61.0401 ±
0.0010
624-91-9*2
Dichlorine monoxide ClOCl79.7677.95± 0.36kJ/mol86.9048 ±
0.0018
7791-21-1*0
Chlorine peroxide ClOOCl134.51131.28± 0.56kJ/mol102.9042 ±
0.0019
12292-23-8*0
Iodoxyl radical I[O]127.0125.0± 1.1kJ/mol142.90387 ±
0.00030
14696-98-1*0
Dinitrogen cation N#[N+]1503.3111503.312± 0.0011kJ/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
Nitrogen sesquioxide O=N-[N](=O)[O]90.7286.15± 0.15kJ/mol76.01168 ±
0.00091
10544-73-7*0
Ammonium [NH4+]643.05631.74± 0.21kJ/mol18.03795 ±
0.00029
14798-03-9*0
Chloronium [H][ClH+]881.29878.19± 0.97kJ/mol37.46803 ±
0.00091
36658-55-6*0
Ammonium [NH4+]-133.077± 0.056kJ/mol18.03795 ±
0.00029
14798-03-9*800
Hydrazyl N[NH]235.28224.62± 0.83kJ/mol31.03730 ±
0.00025
13598-46-4*0
Dioxygen difluoride FOOF33.6629.94± 0.50kJ/mol69.99561 ±
0.00060
7783-44-0*0
Ethylidene [CH]C373.93366.70± 0.86kJ/mol28.0532 ±
0.0016
4218-50-2*2
Hydrogen isocyanide cation [C+]=N1352.91352.8± 1.2kJ/mol27.02483 ±
0.00081
74158-11-5*0
Propargylenide C#C[CH-]434.6437.1± 1.1kJ/mol38.0485 ±
0.0024
82906-05-6*1
2-Hydroxyethyl [CH2]CO-10.04-22.68± 0.85kJ/mol45.0605 ±
0.0017
4422-54-2*2
Dimethyl ether COC-166.50-184.01± 0.44kJ/mol46.0684 ±
0.0017
115-10-6*0
Methanediol C(O)O-368.51-381.66± 0.99kJ/mol48.0413 ±
0.0010
463-57-0*2
Dichloride Cl[Cl-]-230.4-229.4± 1.4kJ/mol70.9059 ±
0.0018
12595-89-0*0
Chlorine dioxide O=Cl=O101.0398.56± 0.30kJ/mol67.4515 ±
0.0011
10049-04-4*0
Hydroperoxonium [OH2+]O738.17727.91± 0.98kJ/mol35.02207 ±
0.00064
70850-26-9*1
Formyl fluoride FC=O-378.72-382.31± 0.33kJ/mol48.01644 ±
0.00086
1493-02-3*0
Nitric acid O[N+](=O)[O-]-206.63± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*800
Hydrogen fluoride F-321.06± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*818
Oxoammoniumyl [NH+]=O1092.611089.69± 0.67kJ/mol31.01353 ±
0.00032
63559-87-5*0
Difluoride F[F-]-290.8-290.0± 1.4kJ/mol37.9973550 ±
0.0000010
12184-85-9*0
Peroxynitrous acid OON=O7.670.59± 0.40kJ/mol63.01288 ±
0.00091
14691-52-2*1
Vinylidene [C]=C411.28412.20± 0.33kJ/mol26.0373 ±
0.0016
2143-69-3*0
Ethylidyne [C]C508.58504.88± 0.87kJ/mol27.0452 ±
0.0016
67624-57-1*0
Ethylidyne [C]C640.6636.1± 1.2kJ/mol27.0452 ±
0.0016
67624-57-1*2
Iminomethyl cation [NH+]#C953.3949.3± 1.5kJ/mol28.03277 ±
0.00082
196216-36-1*0
Chlorine superoxide ClO[O]103.82102.73± 0.37kJ/mol67.4515 ±
0.0011
17376-09-9*0
Water dimer O.O-491.081-499.121± 0.053kJ/mol36.03056 ±
0.00066
25655-83-8*0
iso-Propylium C[CH+]C822.88805.62± 0.26kJ/mol43.0871 ±
0.0024
19252-53-0*0
Trioxidane OOO-72.03-80.52± 0.81kJ/mol50.01408 ±
0.00091
14699-99-1*2
1-Propenyl CC=[CH]277.98267.19± 0.79kJ/mol41.0718 ±
0.0024
6067-68-1*2
1-Propynyl CC#[C]529.01526.65± 0.81kJ/mol39.0559 ±
0.0024
89342-91-6*0
Propargylenide C#C[CH-]437.0439.5± 1.1kJ/mol38.0485 ±
0.0024
82906-05-6*2
2-Propyn-1-ylium-1-ylidene C#C[C+]1598.01602.9± 1.3kJ/mol37.0395 ±
0.0024
75104-46-0*0
2-Butyne CC#CC158.96146.00± 0.59kJ/mol54.0904 ±
0.0032
503-17-3*0
1-Butyne CCC#C179.36165.77± 0.67kJ/mol54.0904 ±
0.0032
107-00-6*0
iso-Pentane CCC(C)C-119.22-153.27± 0.44kJ/mol72.1488 ±
0.0041
78-78-4*0
Chlorine fluoride ClF-55.612-55.707± 0.055kJ/mol54.45110 ±
0.00090
7790-89-8*0
2-Hydroxyethyl [CH2]CO-5.1-17.5± 1.2kJ/mol45.0605 ±
0.0017
4422-54-2*3
Vinoxy C=C[O]22.4615.61± 0.77kJ/mol43.0446 ±
0.0016
6912-06-7*0
Acetyl anion C[C-]=O-43.8-49.4± 1.3kJ/mol43.0452 ±
0.0016
78944-68-0*0
Ketene C=C=O182.5177.5± 1.1kJ/mol42.0367 ±
0.0016
463-51-4*1
Formic acid C(=O)O-371.12-378.42± 0.22kJ/mol46.0254 ±
0.0010
64-18-6*0
Hydroxyformyl O[C]=O-174.04-177.07± 0.51kJ/mol45.0174 ±
0.0010
2564-86-5*2
Hydroxyformyl anion [C-](=O)O-319.36-322.13± 0.58kJ/mol45.0180 ±
0.0010
78944-70-4*2
Fluorotrichloromethane C(Cl)(Cl)(Cl)F-286.9-290.1± 1.2kJ/mol137.3672 ±
0.0028
75-69-4*0
Bromotrichloromethane C(Cl)(Cl)(Cl)Br-33.82-42.97± 0.71kJ/mol198.2728 ±
0.0030
75-62-7*0
Difluoromethylene [C](F)F-193.99-193.51± 0.38kJ/mol50.00751 ±
0.00080
2154-59-8*0
Fluoromethylene [CH]F210.12210.45± 0.68kJ/mol32.01704 ±
0.00080
13453-52-6*1
Hexafluoroethane C(F)(F)(F)C(F)(F)F-1334.5-1342.8± 1.5kJ/mol138.0118 ±
0.0016
76-16-4*0
1,1-Difluoroethane CC(F)F-489.09-502.81± 0.65kJ/mol66.0500 ±
0.0016
75-37-6*0
2-Hydrotrioxy [O][OH][O]300.9295.2± 1.1kJ/mol49.00614 ±
0.00090
*12500-78-6*0
1,1-Difluoroethene C=C(F)F-343.72-350.78± 0.85kJ/mol64.0341 ±
0.0016
75-38-7*0
Tricarbon dioxide O=C=C=C=O-96.2-94.1± 1.2kJ/mol68.0309 ±
0.0025
504-64-3*0
Iodobenzene c1ccc(cc1)I177.6161.6± 1.0kJ/mol204.0084 ±
0.0048
591-50-4*0
Iodine monobromide IBr49.71740.770± 0.067kJ/mol206.8085 ±
0.0010
7789-33-5*0
Nitrosyl nitrite O=NON=O92.687.5± 1.2kJ/mol76.01168 ±
0.00091
122413-35-8*1
Nitroxyl O=[N+]([O-])[O]79.3874.13± 0.19kJ/mol62.00494 ±
0.00090
12033-49-7*0
Isodiazene [N]N307.99300.93± 0.75kJ/mol30.02936 ±
0.00020
28647-38-3*0
Nitryl hydride [NH+](=O)[O-]-37.2-44.2± 1.5kJ/mol47.01348 ±
0.00061
90266-90-3*0
Carbon atom cation [C+]1797.8531803.451± 0.050kJ/mol12.01015 ±
0.00080
14067-05-1*0
Methyliumyl [CH2+]1393.091393.95± 0.13kJ/mol14.02603 ±
0.00081
15091-72-2*0
Oxygen atom [O]436.666438.523± 0.0021kJ/mol15.99940 ±
0.00030
17778-80-2*2
Methyliumylidene [CH+]1619.7581623.102± 0.057kJ/mol13.01809 ±
0.00080
24361-82-8*0
Methylidyne anion [CH-]475.47478.79± 0.91kJ/mol13.01919 ±
0.00080
28604-54-8*0
Ozonide O=[O-]=O-58.48-60.83± 0.21kJ/mol47.99875 ±
0.00090
12596-80-4*0
(E)-Iminomethyl [CH]=N275.92272.30± 0.84kJ/mol28.03332 ±
0.00082
54980-10-8*0
Nitrilomethylium [C+]#N1778.31781.8± 1.2kJ/mol26.01689 ±
0.00080
12539-57-0*0
Fluoroacetylene C#CF104.73105.44± 0.41kJ/mol44.0277 ±
0.0016
2713-09-9*0
Chloroacetylene C#CCl228.3229.2± 1.1kJ/mol60.4820 ±
0.0018
593-63-5*0
Methanol cation [CH3+]O857.08846.75± 0.33kJ/mol32.04131 ±
0.00090
12538-91-9*0
Methyloxonium CO.[H+]589.9575.7± 1.2kJ/mol33.04925 ±
0.00092
17836-08-7*0
Hydroxyde [OH-]-230.012± 0.029kJ/mol17.00789 ±
0.00031
14280-30-9*800
Oxidanylium [OH+]1293.1891293.218± 0.035kJ/mol17.00679 ±
0.00031
12259-29-9*0
Carbonic acid OC(=O)O-596.92-607.04± 0.85kJ/mol62.0248 ±
0.0012
463-79-6*2
Carbonic acid OC(=O)O-561.70-570.55± 0.98kJ/mol62.0248 ±
0.0012
463-79-6*3
1,2-Propadienyl anion C=C=[CH-]265.85262.65± 0.72kJ/mol39.0565 ±
0.0024
64066-06-4*0
1-Propynyl anion CC#[C-]265.06261.60± 0.81kJ/mol39.0565 ±
0.0024
36147-87-2*0
Bromine monochloride BrCl21.88014.437± 0.060kJ/mol115.3567 ±
0.0013
13863-41-7*0
neo-Pentane CC(C)(C)C-134.64-167.52± 0.41kJ/mol72.1488 ±
0.0041
463-82-1*0
Cyclohexane C1CCCCC1-83.59-123.15± 0.36kJ/mol84.1595 ±
0.0049
110-82-7*0
2-Hydroxyethylium [CH2+]CO1019.61006.8± 1.6kJ/mol45.0600 ±
0.0017
38607-31-7*3
Vinyl alcohol C=CO-112.55-123.86± 0.84kJ/mol44.0526 ±
0.0017
557-75-5*1
Ethynol C#CO94.992.8± 1.3kJ/mol42.0367 ±
0.0016
32038-79-2*0
Hydroxyformyl anion [C-](=O)O-313.53-315.48± 0.59kJ/mol45.0180 ±
0.0010
78944-70-4*1
1-Propanol CCCO-231.38-255.22± 0.26kJ/mol60.0950 ±
0.0025
71-23-8*0
2-Propanol CC(O)C-248.77-272.86± 0.36kJ/mol60.0950 ±
0.0025
67-63-0*0
Acetic acid CC(=O)O-418.38-432.50± 0.54kJ/mol60.0520 ±
0.0017
64-19-7*1
Ethylene glycol OCCO-369.80-389.43± 0.49kJ/mol62.0678 ±
0.0018
107-21-1*0
Fluorochloromethane C(F)Cl-256.4-263.6± 1.3kJ/mol68.4777 ±
0.0012
593-70-4*0
Chlorine atom cation [Cl+]1370.8061372.602± 0.0011kJ/mol35.45215 ±
0.00090
24203-47-2*0
Trioxidanyl OO[O]25.3123.33± 0.13kJ/mol49.00614 ±
0.00090
12500-78-6*1
1,3-Butadiyne C#CC#C458.57460.29± 0.86kJ/mol50.0587 ±
0.0032
460-12-8*0
Toluene c1ccc(cc1)C73.5650.27± 0.36kJ/mol92.1384 ±
0.0056
108-88-3*0
Fluorobenzene cation c1ccc(cc1)[F+]788.69774.00± 0.83kJ/mol96.1018 ±
0.0048
34468-25-2*0
Nitromethyl C=[N+](=O)[O-]138.8129.4± 1.2kJ/mol60.0321 ±
0.0010
16787-85-2*0
Dinitrogen pentoxide O=[N+]([O-])O[N+](=O)[O-]24.4114.84± 0.35kJ/mol108.0105 ±
0.0015
10102-03-1*0
Water anion [H][O-][H]30.529.0± 2.5kJ/mol18.01583 ±
0.00033
12259-30-2*100
Bromonium [Br+]1257.7771251.714± 0.056kJ/mol79.90345 ±
0.00100
22541-56-6*0
Peroxynitric acid [N+](=O)([O-])OO-42.6-54.1± 1.3kJ/mol79.0123 ±
0.0012
26404-66-0*0
Nitrosyl chloride ClN=O54.45152.549± 0.067kJ/mol65.45884 ±
0.00095
2696-92-6*0
Carbon dioxide C(=O)=O49.4850.33± 0.99kJ/mol44.00950 ±
0.00100
124-38-9*1
Methane cation [CH4+]1150.841144.45± 0.25kJ/mol16.04191 ±
0.00085
20741-88-2*0
Ethonium [CH3+][H][CH3]874.54858.30± 0.61kJ/mol31.0764 ±
0.0017
24669-33-8*0
Vinyl anion C=[CH-]237.24232.82± 0.84kJ/mol27.0458 ±
0.0016
25012-81-1*0
Acetylene cation C#[CH+]1328.851328.18± 0.14kJ/mol26.0367 ±
0.0016
25641-79-6*0
Bromide [Br-]-120.80± 0.16kJ/mol79.90455 ±
0.00100
24959-67-9*800
1-Ethylium-1-ylidene [C+]C1329.61328.2± 1.2kJ/mol27.0447 ±
0.0016
78949-84-5*0
Ethylidyne anion [C-]C456.8452.8± 1.4kJ/mol27.0458 ±
0.0016
117768-70-4*0
Vinylidene anion [C-]=C364.15363.96± 0.62kJ/mol26.0378 ±
0.0016
66295-36-1*0
Iodide [I-]-56.829± 0.089kJ/mol126.905019 ±
0.000030
20461-54-5*800
Ethynylium [CH][C+]1687.591690.93± 0.16kJ/mol25.0288 ±
0.0016
16456-59-0*0
Aminomethyl [CH2]N159.40148.51± 0.58kJ/mol30.04920 ±
0.00085
10507-29-6*0
Methylamidogen anion C[NH-]145.99134.64± 0.76kJ/mol30.04975 ±
0.00085
54448-39-4*0
Methyleneamidogen C=[N]242.22238.56± 0.85kJ/mol28.03332 ±
0.00082
15845-29-1*0
(Z)-Iminomethyl [CH]=N294.5291.0± 1.2kJ/mol28.03332 ±
0.00082
54980-11-9*0
Methyloxoniumylidene C[O+]1062.431054.62± 0.72kJ/mol31.03337 ±
0.00088
58157-09-8*0
Hydroxymethylene [CH]O130.86127.11± 0.34kJ/mol30.02598 ±
0.00087
19710-56-6*2
Hydroxymethylene cation [CH+]O971.9968.3± 1.3kJ/mol30.02543 ±
0.00087
135395-06-1*1
Hydrogen difluoride cation [F+]F[H]1173.51170.6± 1.7kJ/mol39.004198 ±
0.000070
*126950-54-7*0
Oxoniumyl ion [H][O+][H]978.472975.569± 0.029kJ/mol18.01473 ±
0.00033
56583-62-1*0
Isoformyl [C]O217.30217.69± 0.67kJ/mol29.01804 ±
0.00086
71080-92-7*0
Azide ion [N]N=[N-]193.64190.05± 0.89kJ/mol42.02077 ±
0.00021
14343-69-2*0
1-Propenyl CC=[CH]280.02269.21± 0.81kJ/mol41.0718 ±
0.0024
6067-68-1*1
Cyclopropene C1C=C1292.54283.81± 0.54kJ/mol40.0639 ±
0.0024
2781-85-3*0
Cyclobutane C1CCC152.1727.63± 0.47kJ/mol56.1063 ±
0.0032
287-23-0*0
Dioxidenium O[O+]1110.871107.98± 0.11kJ/mol33.00619 ±
0.00060
12207-52-2*0
n-Heptane CCCCCCC-145.65-187.52± 0.48kJ/mol100.2019 ±
0.0057
142-82-5*0
n-Octane CCCCCCCC-161.43-208.26± 0.67kJ/mol114.2285 ±
0.0065
111-65-9*0
1-Hydroxyethylium C[CH+]O611.1596.7± 1.2kJ/mol45.0600 ±
0.0017
18682-96-7*2
1H-Triazirin-1-yl [N]1N=[N]1585.9584.1± 2.0kJ/mol42.02022 ±
0.00021
912535-95-6*0
Vinyl alcohol C=CO-108.10-118.62± 0.88kJ/mol44.0526 ±
0.0017
557-75-5*2
Vinyl alcohol cation C=C[OH+]779.2768.0± 1.2kJ/mol44.0520 ±
0.0017
57239-63-1*2
Oxiranyl C1[CH]O1172.8164.5± 1.4kJ/mol43.0446 ±
0.0016
31586-84-2*0
Oxiranylium C1[CH+]O1901.6893.6± 1.4kJ/mol43.0441 ±
0.0016
57789-76-1*2
C=O=C [C]=[O]=[C]653.3657.6± 2.2kJ/mol40.0208 ±
0.0016
*12071-23-7*1
C=O=C [C]=[O]=[C]721.5725.9± 1.6kJ/mol40.0208 ±
0.0016
*12071-23-7*2
Oxirene C1=CO1272.81272.12± 0.98kJ/mol42.0367 ±
0.0016
157-18-6*2
Oxirene C1=CO1388.7384.5± 2.6kJ/mol42.0367 ±
0.0016
157-18-6*11
Formic acid cation [CH+](=O)O721.86714.77± 0.26kJ/mol46.0248 ±
0.0010
50614-05-6*1
Dioxirane C1OO19.411.74± 0.54kJ/mol46.0254 ±
0.0010
157-26-6*0
Formyloxidanyl C(=O)[O]-120.94-124.29± 0.55kJ/mol45.0174 ±
0.0010
16499-21-1*2
Isofulminic acid C#[N+][O-]170.91169.45± 0.49kJ/mol43.02478 ±
0.00086
51060-05-0*0
Trioxidanylium OO[O+]1070.21063.9± 1.3kJ/mol49.00559 ±
0.00090
74241-49-9*1
Methyl formate COC=O-324.6-337.1± 1.6kJ/mol60.0520 ±
0.0017
107-31-3*2
Methyl iodide CI-12.20± 0.19kJ/mol141.93899 ±
0.00083
74-88-4*590
Difluoromethylene [C](F)F43.2043.92± 0.38kJ/mol50.00751 ±
0.00080
2154-59-8*1
Difluoromethylene [C](F)F-193.99-193.51± 0.38kJ/mol50.00751 ±
0.00080
2154-59-8*2
Ethyl iodide CCI-9.40-39.26± 0.49kJ/mol155.9656 ±
0.0016
75-03-6*500
Fluoro(fluorooxy)methylene F[C]OF-135.8-137.0± 2.0kJ/mol66.00691 ±
0.00085
479587-30-9*2
Dibromophosgene C(Br)(Br)=O-97.98-113.91± 0.37kJ/mol187.8181 ±
0.0022
593-95-3*0
Fluoride [F-]-334.51± 0.17kJ/mol18.99895178 ±
0.00000050
16984-48-8*800
Benzene c1ccccc150.7249.17± 0.25kJ/mol78.1118 ±
0.0048
71-43-2*500
Benzoyl fluoride c1ccc(cc1)C(=O)F-288.0-304.4± 1.5kJ/mol124.1124 ±
0.0056
455-32-3*0
(E)-Diazene cation [H]/N=[N+]/[H]1132.581125.67± 0.67kJ/mol30.02881 ±
0.00020
59952-06-6*0
(E)-Diazene anion [H]/N=[N-]/[H]269.3262.4± 1.7kJ/mol30.02991 ±
0.00020
*59952-06-6*0
(Z)-Diazene [H]/N=N\[H]229.21222.08± 0.64kJ/mol30.02936 ±
0.00020
15626-42-3*0
Diazenyl [N]=N252.25249.33± 0.48kJ/mol29.02142 ±
0.00016
36882-13-0*0
Hydroxyaminiumyl [N+]O1160.61157.7± 1.3kJ/mol31.01353 ±
0.00032
63559-88-6*0
Hydroxyamidogen [NH]O123.5117.0± 1.4kJ/mol32.02202 ±
0.00034
13940-32-4*2
Hydroxyaminylium [NH+]O1020.21013.0± 2.0kJ/mol32.02147 ±
0.00034
66097-71-0*1
Triiodide ion I[I-]I-51.36± 0.80kJ/mol380.713959 ±
0.000090
14900-04-0*800
Dioxyamidogen [NH-][O+]=O240.4233.7± 1.8kJ/mol47.01348 ±
0.00061
71843-95-3*2
Peroxynitrous acid OON=O-0.35-7.40± 0.53kJ/mol63.01288 ±
0.00091
14691-52-2*2
Dioxiranylidene [C]1OO1190.6191.4± 1.3kJ/mol44.00950 ±
0.00100
138832-57-2*0
Deuterium atom [2H]219.804221.717± 0.000kJ/mol2.01410177800 ±
0.00000000040
16873-17-9*0
Hypoiodite I[O-]-102.5-104.4± 1.2kJ/mol142.90442 ±
0.00030
15065-65-3*0
Methylene anion [CH2-]328.48328.91± 0.51kJ/mol14.02713 ±
0.00081
50928-07-9*0
Methylidyne [CH]592.78596.12± 0.11kJ/mol13.01864 ±
0.00080
3315-37-5*1
Hydrogen fluoride F-321.15± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*821
Ethylidyne [C]C508.58504.88± 0.87kJ/mol27.0452 ±
0.0016
67624-57-1*1
Trioxodinitrate anion O=N-[N](=O)[O-]-104.4-108.4± 2.3kJ/mol76.01223 ±
0.00091
194856-62-7*100
Aminomethylium [CH2+]N763.9752.0± 1.8kJ/mol30.04865 ±
0.00085
488821-23-4*0
Methylamidogen C[NH]187.86177.14± 0.61kJ/mol30.04920 ±
0.00085
15622-51-2*0
Aminomethylene [CH][NH2]246.6238.8± 1.6kJ/mol29.04126 ±
0.00083
35430-17-2*0
Methylimidogen C[N]323.8316.0± 1.6kJ/mol29.04126 ±
0.00083
27770-42-9*0
Methyleneamidogen anion C=[N-]193.1189.3± 1.1kJ/mol28.03387 ±
0.00082
28892-56-0*0
Aminomethylidyne [C]N372.2368.7± 1.4kJ/mol28.03332 ±
0.00082
84654-89-7*0
Hydrogen isocyanide [C]=N192.00192.39± 0.38kJ/mol27.02538 ±
0.00081
6914-07-4*0
Cyanide [C-]#N63.95667.242± 0.095kJ/mol26.01799 ±
0.00080
57-12-5*0
Methyleneoxonium [CH2].O154.6146.3± 1.4kJ/mol32.04186 ±
0.00090
177788-17-9*0
Hydroxymethylene [CH]O219.0216.1± 1.1kJ/mol30.02598 ±
0.00087
19710-56-6*3
Hydroxymethylene anion [CH-]O147.4144.4± 1.4kJ/mol30.02653 ±
0.00087
207914-87-2*1
Dinitrogen tetraoxide O=N(=O)N(=O)=O20.1510.86± 0.14kJ/mol92.0111 ±
0.0012
10544-72-6*0
Hydroxymethyliumylidene [C+]O986.13987.77± 0.80kJ/mol29.01749 ±
0.00086
60528-75-8*0
Isoformyl anion [C][O].[H-]55.858.4± 1.8kJ/mol29.01859 ±
0.00086
81747-63-9*1
Propylium CC[CH2+]856.87838.65± 0.83kJ/mol43.0871 ±
0.0024
19252-52-9*0
Cyclopropyl C1C[CH]1302.8290.2± 1.6kJ/mol41.0718 ±
0.0024
2417-82-5*0
Cycloprop-1-enyl C1C=[C]1528.11523.53± 0.78kJ/mol39.0559 ±
0.0024
19528-44-0*0
Cycloprop-2-enyl C1=C[CH]1491.03486.42± 0.77kJ/mol39.0559 ±
0.0024
28933-84-8*0
Cyclopropenylidene C1=C=C1497.07496.12± 0.47kJ/mol38.0480 ±
0.0024
16165-40-5*0
2-Propynylidyne anion C#C[C-]539.97544.82± 0.84kJ/mol37.0406 ±
0.0024
82893-67-2*0
Cyclopropynyl [CH]1C#C1710.7714.8± 1.1kJ/mol37.0400 ±
0.0024
119178-99-3*0
n-Butyl CCC[CH2]101.4878.25± 0.98kJ/mol57.1143 ±
0.0033
2492-36-6*0
Methylcyclopropane CC1CC147.524.3± 1.3kJ/mol56.1063 ±
0.0032
594-11-6*0
Cyclobutene C1CC=C1176.79159.74± 0.93kJ/mol54.0904 ±
0.0032
822-35-5*0
Oxygen cation monohydrate [H]O[H][O+]1153.21147.7± 3.2kJ/mol34.01413 ±
0.00062
*31748-17-1*0
Oxygen anion monohydrate [H]O[H][O-]-239.1-244.3± 3.0kJ/mol34.01523 ±
0.00062
31748-17-1*0
Vinyl alcohol cation C=C[OH+]787.30776.18± 0.99kJ/mol44.0520 ±
0.0017
57239-63-1*1
Vinoxy cation [CH2+]C=O1020.21013.2± 1.6kJ/mol43.0441 ±
0.0016
*35731-40-9*1
Vinoxide [CH2-]C=O-153.55-160.60± 0.77kJ/mol43.0452 ±
0.0016
35731-40-9*0
Acetic acid CC(=O)O-485.18± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*800
Ketene C=C=O-45.45-48.57± 0.13kJ/mol42.0367 ±
0.0016
463-51-4*2
COC vdW [C]=O.[C]589.8598.6± 1.8kJ/mol40.0208 ±
0.0016
*12071-24-8*1
Oxirene C1=CO1390.7386.6± 2.7kJ/mol42.0367 ±
0.0016
157-18-6*12
Methylperoxy anion CO[O-]-89.79-99.94± 0.67kJ/mol47.0339 ±
0.0010
35683-44-4*0
Formyloxoniumylidene C(=O)[O+]1016.91013.5± 1.2kJ/mol45.0169 ±
0.0010
54375-27-8*0
Dioxymethylene [CH]O[O]363.6361.2± 2.6kJ/mol45.0174 ±
0.0010
438586-67-5*1
Trioxidaniumyl O[O+]O927.1917.8± 1.3kJ/mol50.01353 ±
0.00091
161321-37-5*2
Cyanic acid OC#N-12.21-14.92± 0.49kJ/mol43.02478 ±
0.00086
420-05-3*0
Fulminic acid O[N+]#[C-]235.37233.67± 0.48kJ/mol43.02478 ±
0.00086
506-85-4*0
Isocyanate [N-]=C=O-221.11-221.33± 0.54kJ/mol42.01739 ±
0.00086
71000-82-3*0
Nitrosomethylidyne [C]N=O389.4390.7± 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
Dimethylamine CNC5.91-15.99± 0.67kJ/mol45.0837 ±
0.0017
124-40-3*0
Trimethylamine CN(C)C4.48-24.08± 0.63kJ/mol59.1103 ±
0.0025
75-50-3*0
Isocyanogen [C-]#[N+]C#N410.7413.1± 1.6kJ/mol52.0349 ±
0.0016
83951-85-3*0
Diisocyanogen [C-]#[N+][N+]#[C-]610.1613.0± 1.7kJ/mol52.0349 ±
0.0016
78800-21-2*0
Fluorosyl ion O=[F+]1342.621342.57± 0.78kJ/mol34.99725 ±
0.00030
12763-67-6*0
Cyanoamidogen [NH]C#N324.7322.3± 1.7kJ/mol41.03212 ±
0.00082
12347-01-2*0
Oxywater [OH2][O]65.058.5± 1.2kJ/mol34.01468 ±
0.00062
171363-09-0*0
Bromodichloromethane C(Cl)(Cl)Br-38.6-50.3± 1.3kJ/mol163.8280 ±
0.0022
75-27-4*0
Chlorous acid OCl=O25.6720.61± 0.67kJ/mol68.4594 ±
0.0011
13898-47-0*0
Difluorodibromomethane C(F)(F)(Br)Br-366.7-384.4± 1.4kJ/mol209.8155 ±
0.0022
75-61-6*0
Dichlorodibromomethane C(Cl)(Cl)(Br)Br19.63.9± 1.5kJ/mol242.7241 ±
0.0028
594-18-3*0
Bromodifluoromethane C(F)(F)Br-410.92-424.12± 0.49kJ/mol130.9194 ±
0.0013
1511-62-2*0
1,2-Difluoroethane C(F)CF-434.51-447.94± 0.86kJ/mol66.0500 ±
0.0016
624-72-6*0
2-Hydrotrioxy anion [O][OH][O-]27.621.9± 1.2kJ/mol49.00669 ±
0.00090
*89965-38-8*0
1,2-Difluoroacetylene FC#CF2.455.27± 0.65kJ/mol62.0182 ±
0.0016
689-99-6*0
Fluoro(fluorooxy)methylene F[C]OF-38.9-40.4± 1.9kJ/mol66.00691 ±
0.00085
479587-30-9*1
Chloroformyl Cl[C]=O-21.93-20.54± 0.49kJ/mol63.4628 ±
0.0012
2602-42-8*0
Phenylium c1cccc[c+]11251.61239.4± 3.3kJ/mol77.1034 ±
0.0048
17333-73-2*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+]994.7973.3± 1.3kJ/mol157.0074 ±
0.0049
55450-33-4*0
Iodobenzene c1ccc(cc1)I112.7112.8± 1.1kJ/mol204.0084 ±
0.0048
591-50-4*500
2-Hydrotrioxy cation [O][OH][O+]1297.81291.2± 1.3kJ/mol49.00559 ±
0.00090
*74241-49-9*0
Methyl nitrite CON=O-55.46-66.13± 0.46kJ/mol61.0401 ±
0.0010
624-91-9*0
1,2-Dichloroethane C(Cl)CCl-118.24-130.18± 0.59kJ/mol98.9586 ±
0.0024
107-06-2*0
Carbon atom anion [C-]589.624594.771± 0.050kJ/mol12.01125 ±
0.00080
14337-00-9*0
Chloride [Cl-]-166.994± 0.023kJ/mol35.45325 ±
0.00090
16887-00-6*800
Dioxymethylidyne [C]O[O]298.6299.9± 1.5kJ/mol44.00950 ±
0.00100
791121-04-5*0
Oxadiazirine N1=NO1352.1350.3± 1.4kJ/mol44.01288 ±
0.00033
227934-45-4*0
2-Cyclopropyn-1-ylidene C1=C=C=1899.2906.1± 1.5kJ/mol36.0321 ±
0.0024
102508-15-6*1
Propynylidyne cation [C+]1=C=C=11948.31956.2± 2.0kJ/mol36.0316 ±
0.0024
154702-35-9*0
Ethylene cation C=[CH2+]1075.281068.07± 0.13kJ/mol28.0526 ±
0.0016
34470-02-5*0
Bifluoride F[H][F-]-709.1-713.0± 1.7kJ/mol39.005295 ±
0.000070
18130-74-0*0
NON [N]O[N]544.7541.5± 1.5kJ/mol44.01288 ±
0.00033
227934-46-5*0
Iminomethyl anion [CH-]=N238.9235.1± 1.9kJ/mol28.03387 ±
0.00082
90623-30-6*1
Isoformyl anion [C][O].[H-]267.4268.1± 1.6kJ/mol29.01859 ±
0.00086
81747-63-9*2
2-Propynylium [CH2+]C#C1193.471190.66± 0.38kJ/mol39.0554 ±
0.0024
21540-27-2*0
2-Cyclopropen-1-ylium-1-yl C1=[C+]=C11382.01381.0± 1.1kJ/mol38.0474 ±
0.0024
85398-75-0*0
Propynylidene [CH]=C=[CH]597.6599.3± 1.2kJ/mol38.0480 ±
0.0024
67152-18-5*3
Propenediylidene [CH][CH][C]796.2797.4± 1.3kJ/mol38.0480 ±
0.0024
60731-11-5*0
Dioxygen anion O=[O-]-43.38-42.74± 0.17kJ/mol31.99935 ±
0.00060
11062-77-4*0
Trifluoromethide [C-](F)(F)F-637.7-639.6± 1.6kJ/mol69.00646 ±
0.00080
54128-17-5*0
Hydrogen fluoride F-321.07± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*902
Cyclopentene C1CC=CC158.1233.85± 0.45kJ/mol68.1170 ±
0.0040
142-29-0*0
Ethyloxoniumyl CC[OH+]784.1766.9± 1.5kJ/mol46.0679 ±
0.0017
34480-55-2*0
1-Hydroxyethylium C[CH+]O609.14594.72± 0.39kJ/mol45.0600 ±
0.0017
18682-96-7*0
Acetaldehyde cation CC=[O+]832.02822.04± 0.29kJ/mol44.0520 ±
0.0017
36505-03-0*0
Oxiranylium C1[CH+]O11233.71226.7± 1.8kJ/mol43.0441 ±
0.0016
57789-76-1*1
Oxiranyl anion C1[CH-]O1121.4113.3± 1.6kJ/mol43.0452 ±
0.0016
72722-59-9*0
Dibromine monoxide BrOBr120.9104.4± 1.4kJ/mol175.8074 ±
0.0020
21308-80-5*0
Fluorochlorate [Cl-]F-255.99-255.39± 0.80kJ/mol54.45165 ±
0.00090
12272-56-9*0
Ethynol anion [CH-]=C=O-48.62-47.37± 0.87kJ/mol41.0293 ±
0.0016
64066-01-9*0
Dicarbon monoxide anion [C-]=C=O153.8157.5± 1.2kJ/mol40.0213 ±
0.0016
87191-88-6*0
Dicarbon monoxide cation [C+]=C=O1433.51438.6± 1.8kJ/mol40.0203 ±
0.0016
12287-08-0*0
Hydroxyimidogen [N]O217.45214.57± 0.87kJ/mol31.01408 ±
0.00032
35337-59-8*0
COC vdW [C]=O.[C]727.2735.5± 1.7kJ/mol40.0208 ±
0.0016
*12071-24-8*2
C=O-C cation [C]=[O+][C]1576.21583.3± 2.3kJ/mol40.0203 ±
0.0016
83483-98-1*1
C=O=C anion [C-]=[O+]=[C-]551.0554.7± 2.1kJ/mol40.0213 ±
0.0016
*87191-88-6*0
Aminylium [NH2+]1266.551264.47± 0.12kJ/mol16.02207 ±
0.00016
15194-15-7*0
Formic acid cation [CH+](=O)O723.8716.7± 1.1kJ/mol46.0248 ±
0.0010
50614-05-6*2
Formic acid anion [CH-](=O)O-255.6-261.8± 1.7kJ/mol46.0259 ±
0.0010
19066-82-1*1
Nitrous acid N(=O)O-71.37-77.72± 0.29kJ/mol47.01348 ±
0.00061
7782-77-6*2
Peroxyhypochlorous acid OOCl3.86-1.42± 0.99kJ/mol68.4594 ±
0.0011
67952-07-2*0
OH-CO vdW complex [O][H].[C]#O-80.30-77.41± 0.96kJ/mol45.0174 ±
0.0010
*2564-85-4*100
CO-HO vdW complex [O][H].O#[C]-77.6-73.6± 1.8kJ/mol45.0174 ±
0.0010
*2564-84-3*100
H-CO2 vdW complex [H].O=C=O-179.3-178.4± 2.2kJ/mol45.0174 ±
0.0010
*2564-83-2*100
Azidonitrene [N]=NN=[N]692.0687.4± 1.4kJ/mol56.02696 ±
0.00028
147363-92-6*2
Isocyanic acid cation [NH+]=C=O1003.031000.37± 0.51kJ/mol43.02423 ±
0.00086
444010-28-0*0
Isofulminic acid cation C#[N+][O]1215.81213.0± 1.3kJ/mol43.02423 ±
0.00086
114766-65-3*0
Acetic acid CC(=O)O-484.91± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*840
Acetyl chloride CC(=O)Cl-272.21± 0.33kJ/mol78.4973 ±
0.0019
75-36-5*500
Chlorosyl ion [Cl+]=O1150.691150.53± 0.66kJ/mol51.45155 ±
0.00095
12301-79-0*0
(Formyloxy)methyl O=CO[CH2]-148.7-156.8± 1.5kJ/mol59.0440 ±
0.0017
3122-12-1*1
Glyoxal C(=O)C=O-206.99-212.63± 0.52kJ/mol58.0361 ±
0.0017
107-22-2*1
Diazoethenylidene [N-]=[N+]=C=[C]657.0659.6± 3.0kJ/mol52.0349 ±
0.0016
130760-10-0*0
Isocyanomethylidyne [C][N+]#[C-]671.3675.7± 3.6kJ/mol38.0281 ±
0.0016
53590-27-5*0
Diazomethyl [CH]=[N]=[N]472.8470.2± 2.0kJ/mol41.03212 ±
0.00082
20813-32-5*0
Isocyanoamidogen [NH][N+]#[C-]492.7490.7± 2.0kJ/mol41.03212 ±
0.00082
947408-73-3*0
Tetrachloromethane C(Cl)(Cl)(Cl)Cl-109.53-128.94± 0.65kJ/mol153.8215 ±
0.0037
56-23-5*500
Dioxygenyl ion monohydrate O.O=[O+]828.6821.5± 1.9kJ/mol50.01353 ±
0.00091
11083-61-7*0
Chloroform C(Cl)(Cl)Cl-133.87± 0.63kJ/mol119.3767 ±
0.0028
67-66-3*590
Chlorodibromomethane C(Cl)(Br)Br18.1-0.6± 3.4kJ/mol208.2793 ±
0.0023
124-48-1*0
Fluorotribromomethane C(Br)(Br)(Br)F-108.3-132.3± 1.6kJ/mol270.7211 ±
0.0031
353-54-8*0
Chlorotribromomethane C(Br)(Br)(Br)Cl76.053.1± 1.6kJ/mol287.1754 ±
0.0032
594-15-0*0
Hydrogen fluoride F-321.13± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*904
Hydroxydioxonitrate O[N](=O)[O-]-191.2-195.6± 2.9kJ/mol63.01343 ±
0.00091
58875-09-5*0
Chlorobromomethane C(Cl)Br-29.3-43.3± 1.4kJ/mol129.3833 ±
0.0016
74-97-5*0
Nitryl ion O=[N+]=O961.78958.22± 0.20kJ/mol46.00499 ±
0.00060
14522-82-8*0
Ammonia N-80.886± 0.053kJ/mol17.03056 ±
0.00022
7664-41-7*1000
Fluoromethyliumylidene [C+]F1122.611125.83± 0.48kJ/mol31.00855 ±
0.00080
33412-11-2*0
Fluoromethylene [CH]F148.26148.54± 0.44kJ/mol32.01704 ±
0.00080
13453-52-6*0
Ethyl iodide CCI8.72-7.16± 0.49kJ/mol155.9656 ±
0.0016
75-03-6*0
1,2-Dichloroacetylene ClC#CCl230.9234.2± 1.9kJ/mol94.9268 ±
0.0024
7572-29-4*0
1,2-Dibromoacetylene BrC#CBr333.1322.2± 3.6kJ/mol183.8294 ±
0.0026
624-61-3*0
Fluoro(fluorooxy)methylene F[C]OF-101.0-99.2± 2.0kJ/mol66.00691 ±
0.00085
479587-30-9*101
Fluorooxomethylium F[C+]=O724.2723.9± 1.4kJ/mol47.00795 ±
0.00085
38264-00-5*0
Fluoroisoformyl [C]OF-39.2-33.8± 1.7kJ/mol47.00850 ±
0.00085
*1871-24-5*0
Formyl chloride C(=O)Cl-179.61-182.81± 0.93kJ/mol64.4707 ±
0.0012
2565-30-2*0
Ammonium nitrate [NH4+].O=[N+]([O-])[O-]-350.28-365.25± 0.19kJ/mol80.04344 ±
0.00095
6484-52-2*500
Chlorosyl chloride ClCl[O]134.4133.2± 1.4kJ/mol86.9048 ±
0.0018
86825-56-1*0
Dioxaziridinyl [N]1OO1355.0352.5± 1.3kJ/mol46.00554 ±
0.00060
66252-29-7*0
Benzene cation c1ccc(cc1)[H+]992.51976.04± 0.25kJ/mol78.1113 ±
0.0048
34504-50-2*0
Dibromide Br[Br-]-200.1-214.2± 2.0kJ/mol159.8085 ±
0.0020
12595-70-9*0
o-Benzyne C1=CC#CC=C1469.7460.8± 1.4kJ/mol76.0960 ±
0.0048
462-80-6*0
o-Benzyne anion C1=CC#CC=[CH-]1415.5407.0± 1.4kJ/mol76.0965 ±
0.0048
100569-88-8*0
Hydrogen fluoride F-321.17± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*822
Trihydrogen dioxide anion [OH][H][OH-]-487.26-495.52± 0.96kJ/mol35.02317 ±
0.00064
12501-19-8*0
Peroxyimidogen [N]O[O]409.4407.4± 1.6kJ/mol46.00554 ±
0.00060
*60488-31-5*0
1,2-Dibromoethane C(Br)CBr-10.9-37.7± 1.3kJ/mol187.8612 ±
0.0026
106-93-4*0
1,1-Dichloroethane CC(Cl)Cl-114.8-127.5± 1.1kJ/mol98.9586 ±
0.0024
75-34-3*0
Dioxygen difluoride cation FO[O+]F1291.41287.5± 4.6kJ/mol69.99506 ±
0.00060
*7783-44-0*1
Acetylene anion C#[CH-]357.4357.2± 1.8kJ/mol26.0378 ±
0.0016
50443-89-5*1
1-Hydrazinylium-1-yl [N+]N1145.21138.2± 1.5kJ/mol30.02881 ±
0.00020
63986-30-1*0
Methylammonium C[NH3+]628.8609.7± 2.5kJ/mol32.06453 ±
0.00091
17000-00-9*0
Isodiazene anion [N-]N387.1380.2± 1.8kJ/mol30.02991 ±
0.00020
*63986-30-1*0
Oxygen atom [O]246.844249.229± 0.0021kJ/mol15.99940 ±
0.00030
17778-80-2*1
Iminomethyl anion [CH-]=N254.2250.4± 1.9kJ/mol28.03387 ±
0.00082
90623-30-6*2
Hydrogen cyanide cation [CH+]#N1442.531442.06± 0.20kJ/mol27.02483 ±
0.00081
12601-62-6*0
Hydrogen fluoride F-321.20± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*823
Hydrogen peroxide cation O[OH+]930.91924.05± 0.94kJ/mol34.01413 ±
0.00062
12325-10-9*2
Hydrogen bromide Br-120.32± 0.16kJ/mol80.9119 ±
0.0010
10035-10-6*834
Hydrogen fluoride F-321.11± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*820
Methyleneoxonium cation [CH2+].O828.6819.2± 1.6kJ/mol32.04131 ±
0.00090
*177788-17-9*0
Hydroxymethanide [CH2-]O9.22.6± 1.5kJ/mol31.03447 ±
0.00088
55830-71-2*0
Formaldehyde cation C=[O+]944.89941.27± 0.10kJ/mol30.02543 ±
0.00087
54288-05-0*0
Hydroxymethylene cation [CH+]O986.5982.9± 1.4kJ/mol30.02543 ±
0.00087
135395-06-1*2
Hydroxymethylene cation [CH+]O1481.61478.9± 1.7kJ/mol30.02543 ±
0.00087
135395-06-1*3
Hydroxymethylene anion [CH-]O160.6157.9± 1.5kJ/mol30.02653 ±
0.00087
207914-87-2*2
Hydroxymethylene anion [CH-]O333.6334.4± 1.8kJ/mol30.02653 ±
0.00087
207914-87-2*3
Aquacarbon [C].O441.4439.8± 2.1kJ/mol30.02598 ±
0.00087
81434-73-3*1
Aquacarbon [C].O470.2468.1± 2.4kJ/mol30.02598 ±
0.00087
81434-73-3*102
Hydroxylamine NO-14.7-25.2± 1.5kJ/mol33.02996 ±
0.00037
7803-49-8*2
Hydroxylamine cation N[OH+]858.0848.1± 1.8kJ/mol33.02941 ±
0.00037
62675-55-2*0
Peroxyformic acid C(=O)OO-265.8-273.8± 1.6kJ/mol62.0248 ±
0.0012
107-32-4*2
Peroxyformic acid C(=O)OO-265.7-273.6± 1.6kJ/mol62.0248 ±
0.0012
107-32-4*3
Hydrogen fluoride F-320.89± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*815
Hydrogen bromide Br-120.61± 0.16kJ/mol80.9119 ±
0.0010
10035-10-6*844
Dioxygenyl fluoride cation FO[O+]1221.21218.8± 2.0kJ/mol50.99665 ±
0.00060
139584-95-5*0
Propynylidene cation C#C[CH+]1410.81413.4± 1.3kJ/mol38.0474 ±
0.0024
75123-91-0*0
Chlorine chlorite ClO[Cl]=O168.3165.8± 1.4kJ/mol102.9042 ±
0.0019
105206-44-8*0
Propynylidene [CH]=C=[CH]597.3599.2± 1.1kJ/mol38.0480 ±
0.0024
67152-18-5*4
Propadienylidenide C=C=[C-]381.18382.08± 0.43kJ/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
Nitroxyl cation N[O+]946.32939.19± 0.84kJ/mol32.02147 ±
0.00034
*51375-41-8*0
Hydrogen fluoride F-321.04± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*901
Hydrogen chloride Cl-165.559± 0.026kJ/mol36.46064 ±
0.00090
7647-01-0*825
Hydrogen chloride Cl-165.760± 0.025kJ/mol36.46064 ±
0.00090
7647-01-0*828
Nitrosyl nitrate O=N(O1)ON1=O70.662.3± 1.7kJ/mol92.0111 ±
0.0012
*15969-55-8*0
n-Pentane CCCCC-173.08± 0.32kJ/mol72.1488 ±
0.0041
109-66-0*500
Dioxygenyl fluoride anion [F-]O[O]-256.8-256.0± 1.9kJ/mol50.99775 ±
0.00060
23553-17-5*0
iso-Pentane CCC(C)C-178.49± 0.44kJ/mol72.1488 ±
0.0041
78-78-4*500
Dioxofluorine [O]F[O]524.0523.2± 1.0kJ/mol50.99720 ±
0.00060
175861-93-5*0
neo-Pentane CC(C)(C)C-189.91± 0.41kJ/mol72.1488 ±
0.0041
463-82-1*500
Cyclopentane C1CCCC1-106.26± 0.44kJ/mol70.1329 ±
0.0041
287-92-3*590
Xenon cation [Xe+]1170.3541170.354± 0.0062kJ/mol131.2895 ±
0.0200
24203-25-6*0
Peroxyimidogen cation [N]O[O+]1409.61406.8± 1.8kJ/mol46.00499 ±
0.00060
*60488-32-6*0
1,5-Hexadiene C=CCCC=C108.3983.80± 0.40kJ/mol82.1436 ±
0.0049
592-42-7*0
2-Hydroxyethylium [CH2+]CO1024.71012.2± 2.3kJ/mol45.0600 ±
0.0017
38607-31-7*1
Ethoxy CC[O]1.13-12.29± 0.51kJ/mol45.0605 ±
0.0017
2154-50-9*0
Ethyloxoniumylidene CC[O+]988.5974.8± 1.8kJ/mol45.0600 ±
0.0017
54387-07-4*0
Hydroxyaminylium [NH+]O1049.21042.1± 2.0kJ/mol32.02147 ±
0.00034
66097-71-0*2
Hydroxyamidogen anion [NH-]O91.285.4± 2.1kJ/mol32.02257 ±
0.00034
*66097-71-0*0
Formylmethyl anion [CH2-]C=O140.5134.2± 1.9kJ/mol43.0452 ±
0.0016
64723-93-9*0
Aminium [NH3+]944.275937.320± 0.030kJ/mol17.03001 ±
0.00022
19496-55-0*0
C=O-C cation [C]=[O+][C]1812.61816.6± 2.3kJ/mol40.0203 ±
0.0016
83483-98-1*2
Dihydrooxooxygen cation [OH2][O+]994.7988.0± 1.4kJ/mol34.01413 ±
0.00062
177329-59-8*0
Oxirene cation C1=C[O+]11109.01105.4± 5.2kJ/mol42.0361 ±
0.0016
94664-69-4*0
Formic acid anion [CH-](=O)O-240.6-246.3± 1.7kJ/mol46.0259 ±
0.0010
19066-82-1*2
Dioxirane cation C1[O+]O11050.71043.0± 1.9kJ/mol46.0248 ±
0.0010
232262-10-1*0
Dioxymethyl cation C=[O+][O]1075.11068.7± 1.6kJ/mol46.0248 ±
0.0010
232262-11-2*0
Peroxyimidogen anion [N]O[O-]164.2161.8± 1.5kJ/mol46.00609 ±
0.00060
60488-31-5*0
Dioxymethylene [CH]O[O]339.6337.4± 3.1kJ/mol45.0174 ±
0.0010
438586-67-5*2
Azidonitrene [N]=NN=[N]660.7657.6± 1.6kJ/mol56.02696 ±
0.00028
147363-92-6*1
Aminyliumyl [NH+]1658.961659.89± 0.25kJ/mol15.014131 ±
0.000099
19067-62-0*0
Cyanato cation N#C[O+]1261.561262.06± 0.59kJ/mol42.01629 ±
0.00086
17247-99-3*0
Nitrous acid N(=O)O-73.018-78.675± 0.079kJ/mol47.01348 ±
0.00061
7782-77-6*0
Nitrosomethyliumylidene [C+]N=O1509.71510.7± 1.8kJ/mol42.01629 ±
0.00086
67197-19-7*0
Fulminate [C-]#[N+][O-]59.359.6± 1.8kJ/mol42.01739 ±
0.00086
28269-67-2*0
Acetic acid CC(=O)O-484.09-483.66± 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
Trioxidanylium OO[O+]1084.91078.7± 1.4kJ/mol49.00559 ±
0.00090
74241-49-9*2
1,3-Butadiyne-1,4-diyl [C]#CC#[C]1052.351062.32± 0.67kJ/mol48.0428 ±
0.0032
78015-07-3*0
(Formyloxy)methyl O=CO[CH2]-133.5-141.7± 1.9kJ/mol59.0440 ±
0.0017
3122-12-1*2
Glyoxal C(=O)C=O-188.56-194.00± 0.68kJ/mol58.0361 ±
0.0017
107-22-2*2
Glyoxal C(=O)C=O-206.99-212.55± 0.52kJ/mol58.0361 ±
0.0017
107-22-2*0
Isocyanogen anion [C-]#[N]C#N383.9387.6± 2.5kJ/mol52.0354 ±
0.0016
*83951-85-3*1
Diisocyanogen cation [C]#[N+][N+]#[C-]1823.01825.9± 3.5kJ/mol52.0343 ±
0.0016
*78800-21-2*1
Cyanomethylidyne [C]C#N676.1680.5± 1.9kJ/mol38.0281 ±
0.0016
4120-02-9*0
Trioxidaniumyl O[O+]O937.0928.0± 1.4kJ/mol50.01353 ±
0.00091
161321-37-5*3
Dihydrogen cation [H][H+]1488.3641488.480± 0.000kJ/mol2.01533 ±
0.00014
12184-90-6*0
(Z)-Diazene cation [H]/N=[N+]\[H]1157.21150.5± 1.3kJ/mol30.02881 ±
0.00020
86631-37-0*0
Hydrogen difluoride F.[F]-200.7-200.8± 1.8kJ/mol39.004746 ±
0.000070
12528-21-1*0
Fluorochlorobromomethane C(F)(Cl)Br-219.3-231.7± 5.5kJ/mol147.3737 ±
0.0016
593-98-6*0
Hydrogen fluoride F-302.42± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*590
(Z)-Diazene anion [H]/N=[N-]\[H]284.0277.5± 1.7kJ/mol30.02991 ±
0.00020
*86631-37-0*0
Fluoromethyliumyl [CH+]F1116.91117.2± 2.1kJ/mol32.01649 ±
0.00080
89877-52-1*0
Fluoromethylene anion [CH-]F95.8796.40± 0.62kJ/mol32.01759 ±
0.00080
71267-42-0*0
Ethane cation C[CH3+]1043.261029.25± 0.59kJ/mol30.0685 ±
0.0017
34488-65-8*0
Diiodide I[I-]-178.13-180.72± 0.48kJ/mol253.809489 ±
0.000060
12190-71-5*0
Polytetrafluoroethylene FC(C(F)(F)[*:1])(F)[*:2]-829.49± 0.58kJ/mol100.0150 ±
0.0016
9002-84-0*591
Trifluoride ion FF[F-]-364.3-365.3± 2.5kJ/mol56.9957582 ±
0.0000015
25730-99-8*0
Nitric acid O[N+](=O)[O-]-206.31± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*839
Iodine atom cation [I+]1115.5491115.149± 0.0062kJ/mol126.903921 ±
0.000030
22541-93-1*0
cis-1,2-Difluoroethene F/C=C\F-303.0-309.8± 1.1kJ/mol64.0341 ±
0.0016
1630-77-9*0
trans-1,2-Difluoroethene F/C=C/F-299.8-306.2± 1.1kJ/mol64.0341 ±
0.0016
1630-78-0*0
Bromoacetylene C#CBr282.3275.8± 2.2kJ/mol104.9333 ±
0.0019
593-61-3*0
Nitric acid O[N+](=O)[O-]-179.01-173.28± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*500
Formyl fluoride cation F[CH+]=O816.4813.1± 1.2kJ/mol48.01589 ±
0.00086
99766-68-4*0
Oxadiazirine anion [N-]1=NO199.6100.0± 2.6kJ/mol44.01343 ±
0.00033
350586-31-1*0
Formyl fluoride F[C-]=O-405.3-403.8± 1.7kJ/mol47.00905 ±
0.00085
62227-71-8*0
Fluoroisoformyl cation [C+]OF1347.41348.9± 2.1kJ/mol47.00795 ±
0.00085
*1871-25-6*0
Ethanide C[CH2-]152.1141.0± 1.5kJ/mol29.0616 ±
0.0016
25013-41-6*0
Ethylene anion C=[CH2-]232.1224.5± 2.0kJ/mol28.0537 ±
0.0016
34527-91-8*1
Hydrogen chloride Cl-166.685± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*841
Dioxaziridinyl cation [N+]1OO11365.91363.3± 1.5kJ/mol46.00499 ±
0.00060
*66252-29-7*0
Dioxaziridinyl anion [N-]1OO1295.7293.3± 1.4kJ/mol46.00609 ±
0.00060
66252-31-1*0
Nirous oxide cation N#[N+]=O1329.671326.78± 0.12kJ/mol44.01233 ±
0.00033
12269-46-4*0
Nitrosyl fluoride FN=O-85.81-88.18± 0.93kJ/mol49.00454 ±
0.00031
7789-25-5*0
Ozone cation O=[O+]=O1352.8701350.530± 0.041kJ/mol47.99765 ±
0.00090
12596-82-6*0
Hydrogen fluoride F-321.19± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*905
Hydrogen chloride Cl-165.981± 0.025kJ/mol36.46064 ±
0.00090
7647-01-0*829
Aminomethyl anion [CH2-]N212.0201.0± 2.7kJ/mol30.04975 ±
0.00085
74215-21-7*0
Hydrogen fluoride F-321.14± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*890
Allylium C=C[CH2+]964.11952.56± 0.54kJ/mol41.0713 ±
0.0024
1724-44-3*0
1-Propenyl cation CC=[CH+]1232.61222.3± 1.7kJ/mol41.0713 ±
0.0024
50457-58-4*2
1-Propenyl anion CC=[CH-]203.6192.4± 1.8kJ/mol41.0723 ±
0.0024
65887-20-9*2
1-Propenyl cation CC=[CH+]1234.21223.9± 1.7kJ/mol41.0713 ±
0.0024
50457-58-4*1
1-Propenyl anion CC=[CH-]210.2199.1± 1.8kJ/mol41.0723 ±
0.0024
65887-20-9*1
Peroxyhypochlorite ClO[O-]-249.32-249.88± 0.37kJ/mol67.4520 ±
0.0011
224299-14-3*0
Methylaminilium C[NH+]1135.21125.3± 2.5kJ/mol30.04865 ±
0.00085
49784-84-1*0
Hydrogen fluoride F-321.19± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*891
Cycloprop-2-enylium C1=C[CH+]11080.91075.8± 1.4kJ/mol39.0554 ±
0.0024
26810-74-2*0
Nitrogen hydride oxide [NH3+][O-]72.361.1± 1.7kJ/mol33.02996 ±
0.00037
38544-48-8*0
Methanimine cation C=[NH+]1055.81048.8± 2.1kJ/mol29.04071 ±
0.00083
65130-65-6*0
Methanimine anion C=[NH-]228.7221.4± 2.5kJ/mol29.04181 ±
0.00083
127593-73-1*0
Propynylidene [CH]=C=[CH]543.38546.37± 0.63kJ/mol38.0480 ±
0.0024
67152-18-5*0
Bifluoride F.[F-]-475.9-476.3± 3.1kJ/mol39.005295 ±
0.000070
*18130-74-0*0
Aminomethyliumyl [CH][NH2+]1040.81033.1± 2.6kJ/mol29.04071 ±
0.00083
89302-94-3*0
Cyclopropyne C1#CC1791.3790.8± 1.4kJ/mol38.0480 ±
0.0024
60701-63-5*0
Carbon atom [C]833.332838.478± 0.050kJ/mol12.01070 ±
0.00080
7440-44-0*2
Aminomethylene anion [CH][NH2-]357.1350.2± 2.5kJ/mol29.04181 ±
0.00083
207914-86-1*0
Cyclopropenyliumdiyl [CH+]1C#C11692.01694.9± 1.9kJ/mol37.0395 ±
0.0024
127476-05-5*0
Cyclopropynyl anion [CH-]1C#C1517.8520.8± 1.1kJ/mol37.0406 ±
0.0024
136861-42-2*0
Nitroxyl anion N[O-]49.342.3± 1.8kJ/mol32.02257 ±
0.00034
51375-41-8*0
Methylaminyliumyl C[N+]1478.41471.3± 2.6kJ/mol29.04071 ±
0.00083
56924-51-7*2
Hydrogen chloride Cl-165.948± 0.026kJ/mol36.46064 ±
0.00090
7647-01-0*907
Methylimidogen anion C[N-]322.2314.6± 1.7kJ/mol29.04181 ±
0.00083
82539-34-2*0
Methyleneaminylium C=[N+]1457.21453.6± 2.5kJ/mol28.03277 ±
0.00082
53518-13-1*1
Dibromine BrBr-2.16± 0.20kJ/mol159.8080 ±
0.0020
7726-95-6*800
Nitrosyl nitrite O=NON=O109.6105.5± 1.5kJ/mol76.01168 ±
0.00091
122413-35-8*2
Hydrogen bromide Br-120.54± 0.16kJ/mol80.9119 ±
0.0010
10035-10-6*952
Hydrogen chloride Cl-166.639± 0.025kJ/mol36.46064 ±
0.00090
7647-01-0*840
Cyclopentene C1CC=CC15.01± 0.42kJ/mol68.1170 ±
0.0040
142-29-0*590
Hydrogen chloride Cl-165.548± 0.027kJ/mol36.46064 ±
0.00090
7647-01-0*953
Ethanol CCO-269.31-277.07± 0.21kJ/mol46.0684 ±
0.0017
64-17-5*500
Chlorosyl chloride cation ClCl[O+]1132.61130.8± 2.0kJ/mol86.9043 ±
0.0018
*86825-56-1*0
Bromosyl ion Br[O+]1139.51131.7± 1.6kJ/mol95.9029 ±
0.0010
142315-39-7*0
1-Hydroxyethyl anion C[CH-]O-19.8-33.2± 2.5kJ/mol45.0610 ±
0.0017
88032-18-2*0
Hydrazinylium N[NH+]968.91957.66± 0.83kJ/mol31.03675 ±
0.00025
37369-93-0*0
Hypochlorous acid cation O[Cl+]998.75995.71± 0.88kJ/mol52.45949 ±
0.00095
71606-47-8*0
Dinitrogen pentoxide O=[N+]([O-])O[N+](=O)[O-]-41.06± 0.43kJ/mol108.0105 ±
0.0015
10102-03-1*500
Chlorine fluoride cation [Cl+]F1165.591165.77± 0.50kJ/mol54.45055 ±
0.00090
12432-44-9*0
Aminomethyliumylidene [C+]N1168.91165.6± 2.5kJ/mol28.03277 ±
0.00082
86784-42-1*0
Trioxidanylium OO[O+]1070.21063.9± 1.3kJ/mol49.00559 ±
0.00090
74241-49-9*0
Acetaldehyde anion CC=[O-]-59.3-69.8± 2.4kJ/mol44.0531 ±
0.0017
60427-04-5*0
Triazirinylium ion [N]1N=[N+]11608.81605.9± 1.6kJ/mol42.01967 ±
0.00021
92220-05-8*0
Bromine dioxide [O]Br[O]167.8158.2± 2.8kJ/mol111.9028 ±
0.0012
21255-83-4*0
Ketene cation C=C=[O+]882.12879.10± 0.13kJ/mol42.0361 ±
0.0016
64999-16-2*0
Ketene anion C=C=[O-]-15.4-18.5± 1.9kJ/mol42.0372 ±
0.0016
56391-79-8*0
Hydrooxonitrate [NH-]=O79.776.8± 1.1kJ/mol31.01463 ±
0.00032
66057-02-1*0
Oxoethenylium [CH+]=C=O1139.01141.7± 2.5kJ/mol41.0282 ±
0.0016
92056-63-8*0
Hypofluorous acid cation O[F+]1142.011139.08± 0.89kJ/mol36.00519 ±
0.00031
90243-22-4*0
Ethynylene cation [C]=[C+]1967.41974.0± 1.7kJ/mol24.0209 ±
0.0016
12595-79-8*0
Hydrogen bromide Br-120.56± 0.16kJ/mol80.9119 ±
0.0010
10035-10-6*842
Hypochlorous acid anion O[Cl-]196.7196.4± 2.2kJ/mol52.46059 ±
0.00095
34524-94-2*0
Hydroxyimidogen anion [N-]O230.8228.3± 1.9kJ/mol31.01463 ±
0.00032
*35337-59-8*0
Triazirine N1N=N1464.1457.7± 2.6kJ/mol43.02816 ±
0.00022
157-29-9*0
Ethynol cation C#[C+]O1063.01060.8± 2.5kJ/mol42.0361 ±
0.0016
84005-02-7*0
Methyl hydroperoxide cation C[O+]O832.3819.6± 2.5kJ/mol48.0407 ±
0.0010
112465-88-0*0
Chlorosyl Hydride [H]Cl[O]141.9139.1± 2.3kJ/mol52.46004 ±
0.00095
71572-35-5*0
Trifluorine cation FF[F+]1533.01531.0± 2.2kJ/mol56.9946610 ±
0.0000015
64710-22-1*0
Methoxyoxoniumylidene CO[O+]1012.21003.8± 2.0kJ/mol47.0328 ±
0.0010
86475-50-5*0
Hypofluorous acid anion O[F-]152.7152.0± 3.8kJ/mol36.00629 ±
0.00031
36505-07-4*0
1,2-Propadien-1-yl-3-ylidene anion [C]=C=[C-]621.5628.9± 1.2kJ/mol36.0326 ±
0.0024
109292-47-9*0
Chloroniumyl ion [ClH+]1137.7971137.731± 0.0051kJ/mol36.46009 ±
0.00090
12258-94-5*0
Dioxirane anion C1[O-]O1-170.4-177.3± 3.9kJ/mol46.0259 ±
0.0010
*157-26-6*0
Diazene ion N#N.[H-]176.5175.0± 2.2kJ/mol29.02197 ±
0.00016
71004-29-0*0
Dioxymethyl anion C=[O][O-]55.450.3± 1.4kJ/mol46.0259 ±
0.0010
93207-29-5*0
Hypobromous acid cation O[Br+]975.16964.58± 0.62kJ/mol96.9108 ±
0.0010
154804-02-1*0
Formyloxidanyl C(=O)[O]-124.76-126.12± 0.55kJ/mol45.0174 ±
0.0010
16499-21-1*0
Dioxiranyl O1[CH]O1216.5213.0± 2.0kJ/mol45.0174 ±
0.0010
120595-16-6*0
2-Cyclopropyn-1-ylidene C1=C=C=1994.21001.0± 2.2kJ/mol36.0321 ±
0.0024
102508-15-6*2
Propynylidyne anion [C-]1=C=C=1664.7672.0± 1.6kJ/mol36.0326 ±
0.0024
500574-36-7*0
2-Propanol CC(O)C-305.49-318.30± 0.35kJ/mol60.0950 ±
0.0025
67-63-0*500
Imidogen anion [NH-]322.61322.66± 0.17kJ/mol15.015229 ±
0.000099
23841-33-0*0
Hydrogen bromide Br-120.51± 0.16kJ/mol80.9119 ±
0.0010
10035-10-6*841
Hydroxyoxoammoniumyl O[N+]=O984.1977.7± 1.6kJ/mol47.01293 ±
0.00061
80371-48-8*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
Acetic acid CC(=O)O-418.38-432.50± 0.54kJ/mol60.0520 ±
0.0017
64-19-7*0
Bicyclo[1.1.0]buta-1,3-diene-2,4-diyl C12=[C]C2=[C]11047.411055.01± 0.71kJ/mol48.0428 ±
0.0032
12184-80-4*0
Methoxycarbonyl CO[C]=O-149.8-157.7± 1.9kJ/mol59.0440 ±
0.0017
16481-04-2*1
Hydrogen fluoride F-321.07± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*888
Fluorosyl fluoride FF[O]189.2189.5± 4.8kJ/mol53.99621 ±
0.00030
86825-57-2*0
Oxalic acid C(=O)(C(=O)O)O-710.8-721.4± 2.1kJ/mol90.0349 ±
0.0020
144-62-7*0
Methanol anion [CH3-]O53.843.1± 2.6kJ/mol32.04241 ±
0.00090
68474-04-4*0
Isocyanogen anion [C-]#[N]C#N386.7389.6± 2.9kJ/mol52.0354 ±
0.0016
*83951-85-3*2
Hydroperoxyimidogen OO[N]103.399.8± 2.4kJ/mol47.01348 ±
0.00061
877456-58-1*1
Diisocyanogen cation [C]#[N+][N+]#[C-]1835.11837.8± 3.5kJ/mol52.0343 ±
0.0016
*78800-21-2*2
Cyanoamidogen anion [NH-]C#N71.768.7± 1.7kJ/mol41.03267 ±
0.00082
67131-47-9*0
Cyanamide NC#N140.9134.7± 1.5kJ/mol42.04006 ±
0.00082
420-04-2*0
Diazomethylene [C]=N=[N]578.8579.4± 4.0kJ/mol40.02418 ±
0.00081
2468-81-7*0
Hydrogen chloride Cl-166.714± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*951
Water O-285.830± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*589
Nitric acid cation O[N+](=O)[O]1029.291020.23± 0.69kJ/mol63.01233 ±
0.00091
272109-63-4*0
Tetranitrogen cation [N]=NN=[N+]1392.81392.5± 1.5kJ/mol56.02641 ±
0.00028
12185-04-5*0
Fluorobromomethane C(F)Br-198.0-212.4± 5.5kJ/mol112.9290 ±
0.0013
373-52-4*0
Fluorine atom cation [F+]1758.3111760.610± 0.048kJ/mol18.99785462 ±
0.00000050
14701-13-4*0
Nirous oxide anion [N-]=[N]=O99.396.7± 1.8kJ/mol44.01343 ±
0.00033
12274-12-3*0
Fluorodibromomethane C(F)(Br)Br-160.0-179.5± 5.5kJ/mol191.8250 ±
0.0022
1868-53-7*0
Acetylene anion C#[CH-]380.5380.7± 1.8kJ/mol26.0378 ±
0.0016
50443-89-5*2
Difluorochlorobromomethane C(F)(F)(Cl)Br-431.4-442.2± 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
Difluoromethyliumyl [C+](F)F908.37908.80± 0.89kJ/mol50.00696 ±
0.00080
54250-40-7*0
Formaldehyde anion C=[O-]-25.9-27.5± 1.8kJ/mol30.02653 ±
0.00087
27837-46-3*0
Dioxygen difluoride cation FO[O+]F1294.21290.2± 4.6kJ/mol69.99506 ±
0.00060
*7783-44-0*2
Fluoroniumyl ion [FH+]1275.5671275.799± 0.050kJ/mol20.005795 ±
0.000070
12381-92-9*0
Ammonium chloride [NH4+].[Cl-]-311.724-314.886± 0.063kJ/mol53.49120 ±
0.00095
12125-02-9*510
Chlorosyl chloride anion ClCl[O-]-185.4-184.8± 2.3kJ/mol86.9053 ±
0.0018
*86825-55-0*0
Ethonium [CH3+][H][CH3]889.8871.4± 1.6kJ/mol31.0764 ±
0.0017
24669-33-8*2
Difluorophosgene cation C(F)(F)=[O+]653.31650.68± 0.56kJ/mol66.00636 ±
0.00085
73256-56-1*0
Difluorophosgene anion C(F)(F)=[O-]-603.5-605.4± 2.9kJ/mol66.00745 ±
0.00085
474815-26-4*0
Ammonium bromide [NH4+].[Br-]-253.56-270.14± 0.17kJ/mol97.9425 ±
0.0010
12124-97-9*510
Trioxodinitrate anion O=N-[N](=O)[O-]-87.8-94.9± 1.8kJ/mol76.01223 ±
0.00091
194856-62-7*1
Ethonium [CH3+][H][CH3]896.2878.4± 1.6kJ/mol31.0764 ±
0.0017
24669-33-8*3
Dibromophosgene C(Br)(Br)=O-144.28± 0.96kJ/mol187.8181 ±
0.0022
593-95-3*590
Hydrogen fluoride F-321.08± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*903
2-Chloroethanol ClCCO-315.08± 0.54kJ/mol80.5132 ±
0.0019
107-07-3*590
2-Bromoethanol BrCCO-274.85± 0.47kJ/mol124.9645 ±
0.0019
540-51-2*590
Ethylene anion C=[CH2-]231.6225.5± 2.0kJ/mol28.0537 ±
0.0016
34527-91-8*2
Phenylium c1cccc[c+]11148.471136.57± 0.89kJ/mol77.1034 ±
0.0048
17333-73-2*2
Methylammoniumyl C[NH2+]866.9853.1± 2.4kJ/mol31.05659 ±
0.00088
34516-31-9*0
Methylamine anion C[NH2-]69.154.8± 4.0kJ/mol31.05769 ±
0.00088
81096-79-9*0
Nitrate O=[N+]([O-])[O-]-206.63± 0.18kJ/mol62.00549 ±
0.00090
14797-55-8*800
Chloryl chloride ClCl([O])[O]126.0122.0± 1.7kJ/mol102.9042 ±
0.0019
117489-73-3*0
Fluorobenzene c1ccc(cc1)F-152.01-149.59± 0.83kJ/mol96.1023 ±
0.0048
462-06-6*500
1-Ethylium-1-yl [CH+]C1182.91175.5± 3.0kJ/mol28.0526 ±
0.0016
85944-79-2*0
Bromobenzene c1ccc(cc1)Br59.8± 1.3kJ/mol157.0079 ±
0.0049
108-86-1*500
Acetone CC(=O)C-244.40-247.52± 0.36kJ/mol58.0791 ±
0.0025
67-64-1*500
Ethylidene anion [CH-]C326.7319.4± 1.6kJ/mol28.0537 ±
0.0016
35829-99-3*0
Monoammonium succinate OC(=O)CCC(=O)[O-].[NH4+]-1067.97± 0.72kJ/mol135.1186 ±
0.0035
38457-08-8*510
Diammonium succinate [O-]C(=O)CCC(=O)[O-].[NH4+].[NH4+]-1182.51± 0.48kJ/mol152.1492 ±
0.0035
2226-88-2*510
1,2-Dichloroethane C(Cl)CCl-165.33± 0.59kJ/mol98.9586 ±
0.0024
107-06-2*500
1,1-Dichloroethane CC(Cl)Cl-158.2± 1.1kJ/mol98.9586 ±
0.0024
75-34-3*500
Dioxymethylidyne cation [C+]O[O]1386.61390.1± 2.9kJ/mol44.00895 ±
0.00100
*791121-04-5*101
Iodine monochloride ICl-36.511-35.537± 0.063kJ/mol162.35717 ±
0.00090
7790-99-0*510
NON anion [N]O[N-]495.9493.3± 2.2kJ/mol44.01343 ±
0.00033
*227934-47-6*0
Dinitrogen dioxide O=NN=O172.89171.12± 0.14kJ/mol60.01228 ±
0.00062
16824-89-8*2
Nitrogen sesquioxide cation O=N-[N+](=O)[O]1027.71023.8± 3.4kJ/mol76.01113 ±
0.00091
*10544-73-7*0
Dihydrogen [H][H]1.4170.019± 0.000kJ/mol2.01588 ±
0.00014
1333-74-0*1
Carbon dioxide cation [C+](=O)=O1333.51334.0± 2.1kJ/mol44.00895 ±
0.00100
12181-61-2*1
Trifluorine FFF84.184.8± 2.4kJ/mol56.9952096 ±
0.0000015
73455-86-4*0
Carbon monoxide anion [C]#[O-]34.338.0± 2.2kJ/mol28.01065 ±
0.00085
12539-63-8*0
Cycloprop-1-enylium C1C=[C+]11502.61498.4± 2.2kJ/mol39.0554 ±
0.0024
117067-78-4*0
Cycloprop-1-enyl anion C1C=[C-]1373.8369.3± 2.2kJ/mol39.0565 ±
0.0024
80251-77-0*0
Hydroxylamine NO-97.1± 2.2kJ/mol33.02996 ±
0.00037
7803-49-8*1000
Hydraziniumyl N[NH2+]887.5873.7± 1.8kJ/mol32.04469 ±
0.00031
20771-51-1*0
Cycloprop-2-enyl anion C1=C[CH-]1515.2512.2± 2.2kJ/mol39.0565 ±
0.0024
20829-57-6*0
Carbide [C]=[C-]504.83511.41± 0.52kJ/mol24.0219 ±
0.0016
12595-78-7*0
Hydrogen fluoride F-321.05± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*887
Ammonia anion [NH3-]94.387.4± 2.4kJ/mol17.03111 ±
0.00022
37353-00-7*0
Hydrazine NN57.2550.68± 0.18kJ/mol32.04524 ±
0.00031
302-01-2*500
Hydrazoic acid anion N=[N]=[N-]309.0302.7± 2.3kJ/mol43.02871 ±
0.00022
203264-98-6*1
Cyclopropenylidene anion C1=[C-]=C1544.3543.8± 2.2kJ/mol38.0485 ±
0.0024
*16165-40-5*0
Nitrosyl nitrite anion O=NON=[O-]-102.3-105.5± 2.6kJ/mol76.01223 ±
0.00091
*122413-35-8*1
Propane cation CC[CH3+]974.5954.6± 1.6kJ/mol44.0951 ±
0.0025
34479-70-4*0
Dihydrogen cation [H][H+]1489.0601488.480± 0.000kJ/mol2.01533 ±
0.00014
12184-90-6*1
Bromoniumyl [BrH+]1097.861090.01± 0.16kJ/mol80.9114 ±
0.0010
12258-64-9*0
Carbon atom [C]711.401716.886± 0.050kJ/mol12.01070 ±
0.00080
7440-44-0*1
1,2-Propadien-1-ylium-1-yl-3-ylidene [C]=C=[C+]1981.71990.8± 2.1kJ/mol36.0316 ±
0.0024
118090-85-0*1
Formic acid C(=O)O-431.60-424.77± 0.20kJ/mol46.0254 ±
0.0010
64-18-6*500
Hydrogen peroxide OO-193.161-187.344± 0.080kJ/mol34.01468 ±
0.00062
7722-84-1*500
Bromosyl bromide BrBr[O]180.5164.7± 2.3kJ/mol175.8074 ±
0.0020
68322-97-4*0
2-Propen-3-ylium-1-ylidyne [CH][CH][C+]1791.21792.8± 2.6kJ/mol38.0474 ±
0.0024
161054-36-0*0
Hydroxyoxoammoniumyl O[N+]=O984.1977.7± 1.6kJ/mol47.01293 ±
0.00061
80371-48-8*1
Propenediylidene anion [CH][CH][C-]588.8590.0± 2.3kJ/mol38.0485 ±
0.0024
*161054-36-0*0
Hydrochlorate ion [ClH-]-25.5-24.5± 3.0kJ/mol36.46119 ±
0.00090
63099-75-2*0
1-Propanol CCCO-290.50-302.69± 0.25kJ/mol60.0950 ±
0.0025
71-23-8*500
Nitrous acid anion O[N-]=O-107.4-112.1± 2.1kJ/mol47.01403 ±
0.00061
256393-36-9*2
Dioxygen difluoride anion FO[O-]F-237.4-237.6± 5.6kJ/mol69.99615 ±
0.00060
*7783-45-1*0
Carbon dioxide anion [C-](=O)=O-340.2-339.7± 1.9kJ/mol44.01005 ±
0.00100
14485-07-5*0
Tetrazete N1=NN=N1764.9759.0± 1.8kJ/mol56.02696 ±
0.00028
42851-09-2*0
Acetic acid CC(=O)O-397.3-411.1± 1.2kJ/mol60.0520 ±
0.0017
64-19-7*2
Acetic acid CC(=O)O-484.91± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*839
Hydronium radical O.[H]-18.5-21.6± 2.1kJ/mol19.02322 ±
0.00037
12168-76-2*100
Methyl formate COC=O-386.14± 0.58kJ/mol60.0520 ±
0.0017
107-31-3*500
Hydrogen chloride Cl-166.567± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*839
Hypochloritooxygen cation ClO[O+]1202.51200.3± 3.4kJ/mol67.4510 ±
0.0011
64710-10-7*0
Tetraazatetrahedrane N12N3N1N23763.7757.2± 1.7kJ/mol56.02696 ±
0.00028
12596-63-3*0
Ethylene glycol OCCO-448.69-455.21± 0.38kJ/mol62.0678 ±
0.0018
107-21-1*500
Oxalic acid C(=O)(C(=O)O)O-819.29± 0.46kJ/mol90.0349 ±
0.0020
144-62-7*500
Hydrazide N[NH-]252.8242.9± 2.5kJ/mol31.03785 ±
0.00025
25415-88-7*0
Dimethylamine CNC-41.21± 0.72kJ/mol45.0837 ±
0.0017
124-40-3*500
Trimethylamine CN(C)C-45.80± 0.61kJ/mol59.1103 ±
0.0025
75-50-3*500
Cyanogen cation N#C[C+]#N1598.281600.50± 0.44kJ/mol52.0343 ±
0.0016
37354-81-7*0
Cyanogen anion N#CC#[N-]281.5284.5± 2.7kJ/mol52.0354 ±
0.0016
11118-88-0*0
Isocyanogen cation [C]#[N+]C#N1652.81654.2± 1.7kJ/mol52.0343 ±
0.0016
133415-63-1*0
Cyclobutane C1CCC13.80± 0.44kJ/mol56.1063 ±
0.0032
287-23-0*590
Methylcyclopropane CC1CC11.82± 0.59kJ/mol56.1063 ±
0.0032
594-11-6*590
Methanol CO-235.07-238.41± 0.17kJ/mol32.04186 ±
0.00090
67-56-1*500
Hydrogen chloride Cl-166.107± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*830
Diisocyanogen anion [C-]#[N+][N]#[C-]456.7463.6± 5.7kJ/mol52.0354 ±
0.0016
*78800-22-3*0
Diazoethenylidene cation [N]=[N]=C=[C+]1777.11779.1± 6.1kJ/mol52.0343 ±
0.0016
*130760-10-0*0
Diazoethenylidene anion [N]=[N]=C=[C-]536.1538.6± 5.8kJ/mol52.0354 ±
0.0016
*130760-11-1*0
3H-diazirin-3-ylidene-methylene [C]=C1N=N1833.6836.1± 3.6kJ/mol52.0349 ±
0.0016
204253-88-3*0
Oxadiazirine [N+]1=NO11511.21508.8± 2.1kJ/mol44.01233 ±
0.00033
*227934-45-4*0
Isocyanomethyliumylidene [C][N+]#[C]1612.51618.1± 6.2kJ/mol38.0276 ±
0.0016
78271-45-1*0
Isocyanomethylidyne anion [C][N]#[C-]478.6482.3± 5.8kJ/mol38.0287 ±
0.0016
*53590-27-5*0
Cyanomethyliumylidene [C+]C#N1711.01716.5± 6.0kJ/mol38.0276 ±
0.0016
76619-90-4*0
Cyanomethylidyne anion [C-]C#N406.7410.3± 5.7kJ/mol38.0287 ±
0.0016
12373-35-2*0
2,3-didehydro-1H-azirin-1-yl [N]1C#C1722.1726.2± 4.9kJ/mol38.0281 ±
0.0016
439586-06-8*0
Cyanoaminyliumyl [N]=[C+]=[N]1671.91673.2± 2.9kJ/mol40.02363 ±
0.00081
316122-03-9*0
Cyanoamidogen anion [N]=[C-]=[N]210.87210.88± 0.81kJ/mol40.02473 ±
0.00081
189879-95-6*0
1-Methylethenylium C[C+]=C996.1986.6± 2.5kJ/mol41.0713 ±
0.0024
50457-57-3*0
Cyanamide NC#N58.91± 0.54kJ/mol42.04006 ±
0.00082
420-04-2*500
Diazomethyliumyl [C+]=N=[N]1641.81643.6± 4.4kJ/mol40.02363 ±
0.00081
307495-90-5*0
Diazomethylene anion [C-]=N=[N]407.9408.0± 4.0kJ/mol40.02473 ±
0.00081
205498-92-6*0
Trihydrogen [H]1[H][H]1756.931754.146± 0.015kJ/mol3.02382 ±
0.00021
12184-91-7*2
Dioxiranylidene cation [C+]1OO11409.41410.7± 2.4kJ/mol44.00895 ±
0.00100
*138832-57-2*0
Trioxidanyl OO[O]25.3123.22± 0.13kJ/mol49.00614 ±
0.00090
12500-78-6*0
Deuterium hydride cation [H][2H+]1490.4981490.587± 0.000kJ/mol3.021493 ±
0.000070
12181-16-7*0
1-Methylethenyl anion C[C-]=C199.2188.1± 2.8kJ/mol41.0723 ±
0.0024
65887-19-6*0
Hydrazine anion N[NH2-]226.6212.7± 3.1kJ/mol32.04579 ±
0.00031
65391-88-0*0
Methanol dimer CO.CO-398.1-418.7± 1.4kJ/mol64.0837 ±
0.0018
42845-44-3*0
Methylene chloride C(Cl)Cl-123.30± 0.61kJ/mol84.9320 ±
0.0020
75-09-2*590
Nitrato O=[N+](O)O1290.551285.84± 0.86kJ/mol62.00439 ±
0.00090
133057-96-2*0
Tetraoxodinitrogen cation O=N(=O)[N+](=O)=O1030.61025.1± 2.6kJ/mol92.0105 ±
0.0012
64476-91-1*0
Dioxiranylidene anion [C-]1OO1-109.6-109.1± 2.6kJ/mol44.01005 ±
0.00100
*138832-58-3*0
Krypton cation [Kr+]1350.7591350.759± 0.0011kJ/mol83.7995 ±
0.1000
16915-28-9*0
Difluoromethylene anion [C-](F)F-211.25-210.03± 0.59kJ/mol50.00805 ±
0.00080
66212-40-6*0
Fluorosyl fluoride cation FF[O+]1409.31409.6± 6.3kJ/mol53.99566 ±
0.00030
*86825-50-5*0
Fluoromethylidyne anion [C-]F200.6204.1± 1.7kJ/mol31.00965 ±
0.00080
33412-12-3*0
1-Ethenylium-1-yl [C+]=C1507.61507.6± 1.9kJ/mol26.0367 ±
0.0016
80541-07-7*0
NON cation [N]O[N+]1443.21443.4± 2.4kJ/mol44.01233 ±
0.00033
*227934-46-5*0
n-Hexane CCCCCC-179.99-198.64± 0.34kJ/mol86.1754 ±
0.0049
110-54-3*500
Formaldehyde C=O-179.2± 1.6kJ/mol30.02598 ±
0.00087
50-00-0*500
Nitrosyl nitrite O=NON=O125.4120.1± 2.1kJ/mol76.01168 ±
0.00091
122413-35-8*3
Deuterium hydride [H][2H]0.3280.319± 0.000kJ/mol3.022042 ±
0.000070
13983-20-5*0
Cyclohexane C1CCCCC1-156.29± 0.36kJ/mol84.1595 ±
0.0049
110-82-7*500
Hydrofluorate ion [FH-]-75.4-74.9± 2.0kJ/mol20.006892 ±
0.000070
37249-79-9*0
Iodine atom [I]107.157106.757± 0.0021kJ/mol126.904470 ±
0.000030
14362-44-8*1
Nitric acid O[N+](=O)[O-]-186.84± 0.19kJ/mol63.01288 ±
0.00091
7697-37-2*801
Nitric acid O[N+](=O)[O-]-197.75± 0.18kJ/mol63.01288 ±
0.00091
7697-37-2*805
1,2-Difluoroacetylene cation F[C+]#CF1081.01084.0± 1.5kJ/mol62.0177 ±
0.0016
268566-70-7*0
n-Heptane CCCCCCC-201.72-224.17± 0.48kJ/mol100.2019 ±
0.0057
142-82-5*500
Trioxirane O1OO1274.5271.9± 1.2kJ/mol47.99820 ±
0.00090
153851-84-4*0
n-Octane CCCCCCCC-226.67-249.79± 0.67kJ/mol114.2285 ±
0.0065
111-65-9*500
1,5-Hexadiene C=CCCC=C54.43± 0.32kJ/mol82.1436 ±
0.0049
592-42-7*500
Trioxidane OOO-81.43-90.03± 0.70kJ/mol50.01408 ±
0.00091
14699-99-1*0
Nitric acid trihydrate O[N+](=O)[O-].O.O.O-1062.09-1055.24± 0.21kJ/mol117.0587 ±
0.0019
13444-83-2*500
Deuterium atom cation [2H+]1532.2111534.123± 0.000kJ/mol2.01355319809 ±
0.00000000040
14464-47-2*0
Cyclopropyl anion C1C[CH-]1263.7250.9± 2.5kJ/mol41.0723 ±
0.0024
1724-45-4*0
Hydrogen chloride Cl-166.744± 0.024kJ/mol36.46064 ±
0.00090
7647-01-0*842
Dioxymethylidyne cation [C+]O[O]1435.71438.2± 2.7kJ/mol44.00895 ±
0.00100
*791121-04-5*2
2-Iodoethanol ICCO-207.2± 2.4kJ/mol171.9650 ±
0.0017
624-76-0*590
Azide ion [N]N=[N-]272.62± 0.47kJ/mol42.02077 ±
0.00021
14343-69-2*800
1,3-Butadiyne cation C#CC#[CH+]1440.601441.45± 0.88kJ/mol50.0581 ±
0.0032
55468-55-8*0
Tricarbon dioxide cation O=C=[C+]=C=O927.0930.5± 1.3kJ/mol68.0304 ±
0.0025
151528-67-5*0
Tricarbon dioxide anion O=C=[C-]=C=O-133.5-129.8± 2.5kJ/mol68.0314 ±
0.0025
109362-94-9*0
Trioxygen difluoride FOOOF116.8111.3± 7.8kJ/mol85.99501 ±
0.00090
16829-28-0*0
Oxygen difluoride cation FO[F+]1292.211289.69± 0.67kJ/mol53.99566 ±
0.00030
39432-25-2*0
Nitric acid monohydrate O[N+](=O)[O-].O-479.17-472.67± 0.19kJ/mol81.0282 ±
0.0012
13444-82-1*500
o-Benzyne cation C1=CC#CC=[CH+]11398.91391.4± 2.9kJ/mol76.0954 ±
0.0048
70220-84-7*0
Nitrosyl nitrate O=NO[N+](=O)[O-]48.240.3± 1.8kJ/mol92.0111 ±
0.0012
15969-55-8*1
Toluene c1ccc(cc1)C19.9912.23± 0.36kJ/mol92.1384 ±
0.0056
108-88-3*500
Benzaldehyde c1ccc(cc1)C=O-85.6-86.7± 1.1kJ/mol106.1219 ±
0.0056
100-52-7*500
Hydrogen bromide Br-120.41± 0.16kJ/mol80.9119 ±
0.0010
10035-10-6*839
Fluorosyl fluoride anion FF[O-]-53.5-53.0± 6.1kJ/mol53.99675 ±
0.00030
*86825-57-2*0
Dioxygen O=O94.41094.383± 0.000kJ/mol31.99880 ±
0.00060
7782-44-7*2
Oxygen difluoride anion FO[F-]-194.0-194.4± 3.8kJ/mol53.99675 ±
0.00030
*7783-41-7*0
Iodobenzene cation c1ccc(cc1)[I+]1022.61007.1± 1.0kJ/mol204.0078 ±
0.0048
38406-85-8*0
Peroxynitrous acid OON=O-5.99-12.62± 0.36kJ/mol63.01288 ±
0.00091
14691-52-2*0
Nitrosobenzene c1ccc(cc1)N=O215.4198.4± 1.5kJ/mol107.1100 ±
0.0048
586-96-9*0
2,4,5-Trioxa-1,3-diazabicyclo[1.1.1]pentane N12ON(O1)O2602.2593.0± 1.8kJ/mol76.01168 ±
0.00091
224950-18-9*0
Hydrogen fluoride F-321.48± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*832
Nitromethane C[N+](=O)[O-]-114.20-113.01± 0.44kJ/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
Trifluoroethylene FC=C(F)F-482.8-487.8± 8.4kJ/mol82.0245 ±
0.0016
359-11-5*0
Norbornadiene C1C2C=CC1C=C2237.9212.5± 1.2kJ/mol92.1384 ±
0.0056
121-46-0*0
Norbornadiene C1C2C=CC1C=C2179.1± 1.1kJ/mol92.1384 ±
0.0056
121-46-0*500
2,3-Butanedione CC(=O)C(=O)C-365.46± 0.54kJ/mol86.0892 ±
0.0033
431-03-8*500
2,3-Butanedione CC(=O)C(=O)C-309.87-326.44± 0.78kJ/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
1-Propynylium CC#[C+]1545.81543.9± 2.6kJ/mol39.0554 ±
0.0024
24858-94-4*0
Hydrazoic acid cation N=[N+]=[N]1333.771328.10± 0.82kJ/mol43.02761 ±
0.00022
58852-14-5*0
Oxygen atom hexacation [O+6]42035.2842037.14± 0.12kJ/mol15.99611 ±
0.00030
14158-22-6*0
1,2-Diiodoethane C(I)CI87.7973.12± 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
Methylamine CN-44.83± 0.52kJ/mol31.05714 ±
0.00088
74-89-5*500
1,1-Dibromoethane CC(Br)Br-9.3-36.3± 7.8kJ/mol187.8612 ±
0.0026
557-91-5*0
Xenon hydride cation [Xe+][H]1038.391036.61± 0.93kJ/mol132.2974 ±
0.0200
37276-91-8*0
Hydrazoic acid anion N=[N]=[N-]316.2310.0± 2.3kJ/mol43.02871 ±
0.00022
203264-98-6*2
Water O-238.930-241.833± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*2
1,3-Butadiynyl anion [C]#CC#[C-]677.6686.7± 1.1kJ/mol48.0433 ±
0.0032
59158-53-1*0
1,2-Propadien-1-ylium-1-yl-3-ylidene [C]=C=[C+]1948.31956.2± 2.0kJ/mol36.0316 ±
0.0024
118090-85-0*0
Carbon monoxide [C-]#[O+]-113.803-110.523± 0.026kJ/mol28.01010 ±
0.00085
630-08-0*2
Oxoniumyl ion [H][O+][H]978.472975.569± 0.029kJ/mol18.01473 ±
0.00033
56583-62-1*1
Iodine monochloride ICl-24.048± 0.063kJ/mol162.35717 ±
0.00090
7790-99-0*590
Water trimer O.O.O-762.73-776.83± 0.21kJ/mol54.04584 ±
0.00099
31014-12-7*0
Oxygen atom octacation [O+8]197444.7197446.6± 1.2kJ/mol15.99501 ±
0.00030
21450-98-6*0
Nitrosyl nitrite anion O=NON=[O-]-99.3-102.5± 2.7kJ/mol76.01223 ±
0.00091
*122413-35-8*2
Propylene cation CC=[CH2+]975.10962.14± 0.35kJ/mol42.0792 ±
0.0024
34504-10-4*0
3H-Diazirin-3-ylidene [C]1N=N1578.0578.4± 4.0kJ/mol40.02418 ±
0.00081
253308-70-2*0
Oxygen atom tetracation [O+4]17719.20717721.064± 0.025kJ/mol15.99721 ±
0.00030
14127-65-2*0
Tetrabromomethane C(Br)(Br)(Br)Br47.4± 1.3kJ/mol331.6267 ±
0.0041
558-13-4*500
Trihydrogen cation [H]1[H+][H]11110.3041106.697± 0.013kJ/mol3.02327 ±
0.00021
28132-48-1*2
Tetraiodomethane C(I)(I)(I)I392.5± 8.0kJ/mol519.62858 ±
0.00081
507-25-5*500
Methyl bromide CBr-56.08-59.10± 0.27kJ/mol94.9385 ±
0.0013
74-83-9*590
Fluorine atom [F]77.26479.048± 0.048kJ/mol18.99840320 ±
0.00000050
14762-94-8*1
Acetylene anion C#[CH-]357.4357.2± 1.8kJ/mol26.0378 ±
0.0016
50443-89-5*0
Water O-286.300-292.741± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*510
Dinitrogen dimer N#N.N#N-0.880.84± 0.67kJ/mol56.02696 ±
0.00028
*7727-37-9*0
Trioxirane cation O1O[O+]11444.41442.3± 2.3kJ/mol47.99765 ±
0.00090
*153851-84-4*0
Dioxaziridine N1OO1277.2270.5± 2.0kJ/mol47.01348 ±
0.00061
67394-35-8*0
Dihydrogen [H][H]-0.000-0.058± 0.000kJ/mol2.01588 ±
0.00014
1333-74-0*2
Hydrogen peroxide OO-129.471-135.457± 0.064kJ/mol34.01468 ±
0.00062
7722-84-1*2
Methylene [CH2]390.96391.52± 0.12kJ/mol14.02658 ±
0.00081
2465-56-7*0
Oxygen atom heptacation [O+7]113366.4113368.3± 1.2kJ/mol15.99556 ±
0.00030
14274-89-6*0
Tetraoxodinitrate anion O=N(=O)[N-](=O)=O-184.6-187.8± 2.4kJ/mol92.0116 ±
0.0012
63552-02-3*0
Trihydrogen [H]1[H][H]1745.878743.094± 0.062kJ/mol3.02382 ±
0.00021
12184-91-7*1
Oxonium [OH3+]605.85599.10± 0.17kJ/mol19.02267 ±
0.00037
13968-08-6*2
Chloryl ion O=[Cl+]=O1099.831097.15± 0.54kJ/mol67.4510 ±
0.0011
25052-55-5*0
Cyclopropane cation C1[CH2+]C11021.71006.3± 1.6kJ/mol42.0792 ±
0.0024
34496-93-0*0
Hydroxylamine NO-33.12-43.49± 0.49kJ/mol33.02996 ±
0.00037
7803-49-8*0
1,3-Cyclopentadiene C1C=CC=C1108.76± 0.61kJ/mol66.1011 ±
0.0040
542-92-7*590
Chlorite O=[Cl-]=O-105.94-108.11± 0.38kJ/mol67.4520 ±
0.0011
14998-27-7*0
Oxygen fluoride [O][O](F)F75.571.2± 7.8kJ/mol69.99561 ±
0.00060
183051-89-0*0
Ammonium hydroxide [NH4+].[OH-]-366.715± 0.062kJ/mol35.04584 ±
0.00047
1336-21-6*1000
Hydrazoic acid N=[N+]=[N-]257.63± 0.48kJ/mol43.02816 ±
0.00022
7782-79-8*1000
Oxygen atom pentacation [O+5]28708.78828710.646± 0.053kJ/mol15.99666 ±
0.00030
14127-66-3*0
Hydrazoic acid N=[N+]=[N-]272.62± 0.47kJ/mol43.02816 ±
0.00022
7782-79-8*800
Formaldehyde C=O-170.88± 0.21kJ/mol30.02598 ±
0.00087
50-00-0*501
Formaldehyde C=O-171.16± 0.59kJ/mol30.02598 ±
0.00087
50-00-0*800
mu-Oxodichlorine cation Cl[O+]Cl1130.421126.81± 0.63kJ/mol86.9043 ±
0.0018
51174-96-0*0
Dioxofluorine cation [O]F[O+]1666.71664.5± 2.8kJ/mol50.99665 ±
0.00060
223566-05-0*0
Ethyl bromide CCBr-55.54-91.07± 0.27kJ/mol108.9651 ±
0.0019
74-96-4*500
Hydroxyoxoammoniumyl O[N+]=O1014.81008.5± 1.8kJ/mol47.01293 ±
0.00061
80371-48-8*2
Nitrous acid anion O[N-]=O-106.0-110.0± 2.1kJ/mol47.01403 ±
0.00061
256393-36-9*1
Vinyl iodide C=CI139.7130.9± 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
Ethynylene [C]=[C]820.21826.78± 0.27kJ/mol24.0214 ±
0.0016
12070-15-4*2
Hydrazine monohydrate NN.O-242.66± 0.19kJ/mol50.06052 ±
0.00053
7803-57-8*500
Diatomic bromine cation Br[Br+]1060.331045.38± 0.23kJ/mol159.8075 ±
0.0020
12595-71-0*0
Chlorine atom [Cl]119.621121.228± 0.0011kJ/mol35.45270 ±
0.00090
22537-15-1*1
Dihydrogen cation [H][H+]1488.3641488.480± 0.000kJ/mol2.01533 ±
0.00014
12184-90-6*2
Hydroxymethylene [CH]O112.40108.64± 0.33kJ/mol30.02598 ±
0.00087
19710-56-6*0
1-Hydroxyethyl C[CH]O-42.17-55.59± 0.61kJ/mol45.0605 ±
0.0017
2348-46-1*0
Acetaldehyde CC=O-186.95-191.67± 0.33kJ/mol44.0526 ±
0.0017
75-07-0*500
Hydrogen peroxide cation O[OH+]896.87889.89± 0.57kJ/mol34.01413 ±
0.00062
12325-10-9*11
Tricarbon dioxide O=C=C=C=O-133.0-117.9± 1.2kJ/mol68.0309 ±
0.0025
504-64-3*500
Deuteride [2H-]146.991148.904± 0.0021kJ/mol2.01465035791 ±
0.00000000040
14452-69-8*0
Acetic acid CC(=O)O-484.89± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*833
Oxygen atom dication [O++]4949.4594953.000± 0.013kJ/mol15.99830 ±
0.00030
14127-63-0*0
Acetic acid CC(=O)O-484.94± 0.23kJ/mol60.0520 ±
0.0017
64-19-7*850
Hydrogen fluoride F-321.16± 0.17kJ/mol20.006343 ±
0.000070
7664-39-3*906
Dihydrogen anion [H][H-]253.8254.7± 1.2kJ/mol2.01643 ±
0.00014
12184-89-3*0
Hydrogen peroxide cation O[OH+]930.91924.05± 0.94kJ/mol34.01413 ±
0.00062
12325-10-9*22
Bicyclo[1.1.0]buta-1,3-dien-4-ylium-2-yl C12=[C]C2=[C+]12087.32097.1± 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-]1803.6811.2± 2.1kJ/mol48.0433 ±
0.0032
289679-89-6*0
Tetroxidane OOOO-33.5-44.0± 2.4kJ/mol66.0135 ±
0.0012
29683-94-1*0
Bromine atom [Br]117.917111.854± 0.056kJ/mol79.90400 ±
0.00100
10097-32-2*1
Methyl formate COC=O-344.75-357.79± 0.58kJ/mol60.0520 ±
0.0017
107-31-3*0
Difluorine cation F[F+]1514.3011514.475± 0.013kJ/mol37.9962578 ±
0.0000010
12184-86-0*0
Hydrogen iodide I-56.829± 0.089kJ/mol127.912410 ±
0.000076
10034-85-2*800
Bromodioxy BrO[O]119.2110.2± 4.0kJ/mol111.9028 ±
0.0012
67177-47-3*0
mu-Oxodichlorate anion Cl[O-]Cl-147.8-147.7± 2.5kJ/mol86.9053 ±
0.0018
365546-30-1*0
Oxygen atom trication [O+3]10249.92910252.880± 0.018kJ/mol15.99775 ±
0.00030
14127-64-1*0
Dioxofluorine anion [O]F[O-]156.0154.4± 2.5kJ/mol50.99775 ±
0.00060
*175861-93-5*0
Deuterium molecule cation [2H][2H+]1492.2861492.361± 0.000kJ/mol4.02765497609 ±
0.00000000080
12184-84-8*0
(Z)-1,2-Diiodoethene C(\I)=C\I215.71207.43± 0.44kJ/mol279.8462 ±
0.0016
590-26-1*0
(E)-1,2-Diiodoethene C(\I)=C/I214.82207.43± 0.44kJ/mol279.8462 ±
0.0016
590-27-2*0
1,3-Butadiyn-4-ylium-1-yl [C]#CC#[C+]2109.82120.4± 2.9kJ/mol48.0423 ±
0.0032
124708-46-9*0
Nitrosyl nitrate O=NO[N+](=O)[O-]60.452.5± 1.9kJ/mol92.0111 ±
0.0012
15969-55-8*2
Tribromide ion Br[Br-]Br-129.38± 0.26kJ/mol239.7125 ±
0.0030
14522-80-6*800
1,2-Dibromoethane C(Br)CBr-79.4± 1.3kJ/mol187.8612 ±
0.0026
106-93-4*500
Hydroxylamine NO-107.50± 0.65kJ/mol33.02996 ±
0.00037
7803-49-8*500
Trihydrogen [H]1[H][H]1215.9218.3± 1.1kJ/mol3.02382 ±
0.00021
12184-91-7*100
Krypton hydride cation [Kr+][H]1106.491104.71± 0.70kJ/mol84.8074 ±
0.1000
37276-90-7*0
Dioxymethylene [CH]O[O]339.6337.4± 3.1kJ/mol45.0174 ±
0.0010
438586-67-5*0
Nitrosyl nitrite O=NON=O92.787.8± 1.2kJ/mol76.01168 ±
0.00091
122413-35-8*0
Cyanogen fluoride cation F[C+]#N1294.61295.3± 1.1kJ/mol45.01529 ±
0.00080
62532-69-8*0
Hydrogen peroxide OO-129.451-135.457± 0.064kJ/mol34.01468 ±
0.00062
7722-84-1*1
Isoformyl anion [C][O].[H-]55.858.4± 1.8kJ/mol29.01859 ±
0.00086
81747-63-9*0
Diazene N=N207.35200.21± 0.44kJ/mol30.02936 ±
0.00020
3618-05-1*0
Hydrogen difluoride cation F[H][F+]1253.1249.± 20.kJ/mol39.004198 ±
0.000070
126950-54-7*0
Methyl fluoride cation C[F+]981.49973.98± 0.62kJ/mol34.03237 ±
0.00083
59122-96-2*0
O--HH Complex [H][H].[O]247.6248.9± 2.7kJ/mol18.01528 ±
0.00033
*7732-18-5*101
Hydroperoxonium [OH2+]O738.17727.91± 0.98kJ/mol35.02207 ±
0.00064
70850-26-9*0
Water O-238.646-241.833± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*1
Cyanogen fluoride anion FC#[N-]-21.3-19.4± 3.3kJ/mol45.01639 ±
0.00080
34507-50-1*0
Methyl fluoride CF-246.07± 0.45kJ/mol34.03292 ±
0.00083
593-53-3*590
Methyl chloride cation C[Cl+]1015.031007.58± 0.25kJ/mol50.4867 ±
0.0012
12538-71-5*0
Dicarbon monoxide [C]=C=O376.30380.34± 0.97kJ/mol40.0208 ±
0.0016
12071-23-7*0
Methyl chloride CCl-106.05-102.08± 0.25kJ/mol50.4872 ±
0.0012
74-87-3*590
Ethyl chloride CCCl-134.15-135.77± 0.21kJ/mol64.5138 ±
0.0019
75-00-3*500
Hydrazoic acid N=[N+]=[N-]261.50± 0.64kJ/mol43.02816 ±
0.00022
7782-79-8*500
Methyl bromide cation C[Br+]996.75981.84± 0.27kJ/mol94.9380 ±
0.0013
12538-70-4*0
Ethane anion C[CH3-]41.926.7± 4.4kJ/mol30.0696 ±
0.0017
54064-82-3*0
Iodine monochloride ICl-36.511-35.537± 0.063kJ/mol162.35717 ±
0.00090
7790-99-0*500
Nitrogen atom anion [N-]487.6489.9± 2.5kJ/mol14.007289 ±
0.000070
17778-87-9*0
2-Cyclopropyn-1-ylidene C1=C=C=1899.2906.1± 1.5kJ/mol36.0321 ±
0.0024
102508-15-6*0
3-Chloro-3-methyl-3H-diazirine CC1(N=N1)Cl230.218.± 40.kJ/mol90.5114 ±
0.0019
4222-21-3*0
Methyl iodide cation C[I+]944.77935.37± 0.17kJ/mol141.93844 ±
0.00083
12538-72-6*0
Imidogen [NH]509.32509.37± 0.18kJ/mol15.014680 ±
0.000099
13774-92-0*2
Fluoroform C(F)(F)F-704.33± 0.46kJ/mol70.01385 ±
0.00080
75-46-7*590
Oxonium [OH3+]605.91599.10± 0.17kJ/mol19.02267 ±
0.00037
13968-08-6*1
Nitrosyl nitrite anion O=NON=[O-]-102.3-105.4± 2.6kJ/mol76.01223 ±
0.00091
*122413-35-8*0
Trihydrogen [H]1[H][H]1254.5250.7± 1.2kJ/mol3.02382 ±
0.00021
12184-91-7*200
1,2-Propadien-1-yl-3-ylidene anion [C]=C=[C-]621.5628.9± 1.2kJ/mol36.0326 ±
0.0024
109292-47-9*1
Dinitrogen dioxide O=NN=O172.89171.12± 0.14kJ/mol60.01228 ±
0.00062
16824-89-8*0
Iminomethyl [CH]=N275.92272.32± 0.84kJ/mol28.03332 ±
0.00082
15691-95-9*0
Cyclopropane C1CC135.55± 0.58kJ/mol42.0797 ±
0.0024
75-19-4*500
Isocyanogen fluoride FN=[C]300.3302.2± 2.0kJ/mol45.01584 ±
0.00080
16992-26-0*0
Iminomethyl anion [CH-]=N238.9235.2± 1.9kJ/mol28.03387 ±
0.00082
90623-30-6*0
Trihydrogen [H]1[H][H]1745.878743.199± 0.062kJ/mol3.02382 ±
0.00021
12184-91-7*0
Hydrazoic acid anion N=[N]=[N-]309.0303.2± 2.3kJ/mol43.02871 ±
0.00022
203264-98-6*0
Formic acid cation [CH+](=O)O721.86715.32± 0.26kJ/mol46.0248 ±
0.0010
50614-05-6*0
Fluoro(fluorooxy)methylene F[C]OF-135.8-137.0± 2.0kJ/mol66.00691 ±
0.00085
479587-30-9*0
Formic acid anion [CH-](=O)O-255.6-261.7± 1.7kJ/mol46.0259 ±
0.0010
19066-82-1*0
COC vdW [C]=O.[C]589.8598.6± 1.8kJ/mol40.0208 ±
0.0016
*12071-24-8*0
Hydroxyamidogen [NH]O101.594.7± 1.0kJ/mol32.02202 ±
0.00034
13940-32-4*0
Oxonium [OH3+]-285.828± 0.027kJ/mol19.02267 ±
0.00037
13968-08-6*800
Trioxodinitrate anion O=N-[N](=O)[O-]-104.4-108.4± 2.3kJ/mol76.01223 ±
0.00091
194856-62-7*0
Hydroperoxyimidogen OO[N]111.8108.9± 2.8kJ/mol47.01348 ±
0.00061
877456-58-1*2
Propynylidene [CH]=C=[CH]597.6599.4± 1.2kJ/mol38.0480 ±
0.0024
67152-18-5*2
Phosgene C(=O)(Cl)Cl-242.72± 0.27kJ/mol98.9155 ±
0.0020
75-44-5*501
Phosgene C(=O)(Cl)Cl-255.42-242.72± 0.27kJ/mol98.9155 ±
0.0020
75-44-5*502
Hydroxymethylene cation [CH+]O971.9968.3± 1.3kJ/mol30.02543 ±
0.00087
135395-06-1*0
Cyanogen chloride cation Cl[C+]#N1325.971327.30± 0.94kJ/mol61.4696 ±
0.0012
37612-72-9*0
Isocyanogen chloride ClN=[C]314.8316.6± 2.1kJ/mol61.4701 ±
0.0012
75754-69-7*0
Dioxyamidogen [NH-][O+]=O251.1244.5± 2.5kJ/mol47.01348 ±
0.00061
71843-95-3*1
Hydroperoxonium [OH2+]O762.6752.7± 1.9kJ/mol35.02207 ±
0.00064
70850-26-9*2
Cyclopropylium C1C[CH+]11104.91093.4± 4.1kJ/mol41.0713 ±
0.0024
1724-43-2*0
Nitrous acid anion O[N-]=O-107.4-110.9± 2.1kJ/mol47.01403 ±
0.00061
256393-36-9*0
Dioxygen O=O0.0000.000± 0.000kJ/mol31.99880 ±
0.00060
7782-44-7*1
Diazene anion N=[NH-]269.3262.4± 1.7kJ/mol30.02991 ±
0.00020
100429-75-2*0
Allyl anion C=C[CH2-]133.26123.51± 0.92kJ/mol41.0723 ±
0.0024
1724-46-5*0
2-Iodoethanol ICCO-132.0-150.2± 2.5kJ/mol171.9650 ±
0.0017
624-76-0*0
Diazene N=N207.35200.21± 0.44kJ/mol30.02936 ±
0.00020
3618-05-1*1
Ethynylene [C]=[C]827.38834.08± 0.27kJ/mol24.0214 ±
0.0016
12070-15-4*1
Hydrogen peroxide cation O[OH+]896.87889.89± 0.57kJ/mol34.01413 ±
0.00062
12325-10-9*0
Hydroxyformyl O[C]=O-180.96-183.53± 0.48kJ/mol45.0174 ±
0.0010
2564-86-5*0
Cyanogen bromide cation Br[C+]#N1330.21323.9± 1.1kJ/mol105.9209 ±
0.0013
34749-77-4*0
Bromoform C(Br)(Br)Br2.1± 1.3kJ/mol252.7306 ±
0.0031
75-25-2*590
Hydroxyformyl anion [C-](=O)O-319.36-321.43± 0.58kJ/mol45.0180 ±
0.0010
78944-70-4*0
Hydroxymethylene anion [CH-]O147.4144.5± 1.4kJ/mol30.02653 ±
0.00087
207914-87-2*0
Benzene anion c1ccc(cc1)[H-]208.3196.0± 3.0kJ/mol78.1124 ±
0.0048
34562-85-1*0
Dichlorine cation Cl[Cl+]1108.2871108.266± 0.013kJ/mol70.9049 ±
0.0018
12595-90-3*0
Water dimer cation O.[OH2+]556.8546.4± 3.0kJ/mol36.03001 ±
0.00066
158061-35-9*0
Hydrogen peroxide cation O[OH+]896.89889.89± 0.57kJ/mol34.01413 ±
0.00062
12325-10-9*12
Vinyl alcohol C=CO-112.55-122.93± 0.84kJ/mol44.0526 ±
0.0017
557-75-5*0
O--HH Complex [H][H].[O]247.2248.2± 2.0kJ/mol18.01528 ±
0.00033
*7732-18-5*102
Methylene fluoride C(F)F-467.00± 0.38kJ/mol52.02339 ±
0.00081
75-10-5*590
Ethylene anion C=[CH2-]232.1225.6± 2.0kJ/mol28.0537 ±
0.0016
34527-91-8*0
Trihydrogen [H]1[H][H]1477.4474.7± 2.3kJ/mol3.02382 ±
0.00021
12184-91-7*201
Hydrogen cyanide anion [CH-]#N129.508129.030± 0.091kJ/mol27.02593 ±
0.00081
12334-27-9*0
2-Hydroxyethyl [CH2]CO-12.79-26.06± 0.61kJ/mol45.0605 ±
0.0017
4422-54-2*0
Methane anion [CH4-]10.62.6± 4.8kJ/mol16.04301 ±
0.00085
27680-53-1*0
Chlorine atom [Cl]130.176131.783± 0.0011kJ/mol35.45270 ±
0.00090
22537-15-1*2
Isocyanogen bromide BrN=[C]343.3337.6± 3.1kJ/mol105.9214 ±
0.0013
65997-98-0*0
Hydroxyaminylium [NH+]O1020.21013.0± 2.0kJ/mol32.02147 ±
0.00034
66097-71-0*0
Diazene anion N=[NH-]269.3262.4± 1.7kJ/mol30.02991 ±
0.00020
100429-75-2*1
Iodosyl ion I[O+]1066.11064.1± 2.0kJ/mol142.90332 ±
0.00030
81182-81-2*0
Diisocyanogen cation [C]#[N+][N+]#[C-]1823.01826.0± 3.5kJ/mol52.0343 ±
0.0016
*78800-21-2*0
Oxide [O--]651.653.± 15.kJ/mol16.00050 ±
0.00030
16833-27-5*0
Diazene cation N=[NH+]1132.581125.91± 0.67kJ/mol30.02881 ±
0.00020
76986-17-9*0
Imidogen [NH]358.73358.77± 0.17kJ/mol15.014680 ±
0.000099
13774-92-0*1
Propargylenide C#C[CH-]434.6437.8± 1.1kJ/mol38.0485 ±
0.0024
82906-05-6*0
Bromine atom [Br]162.001155.938± 0.056kJ/mol79.90400 ±
0.00100
10097-32-2*2
Carbon monoxide [C-]#[O+]465.579469.286± 0.026kJ/mol28.01010 ±
0.00085
630-08-0*1
Dinitrogen dioxide O=NN=O192.2188.7± 1.8kJ/mol60.01228 ±
0.00062
16824-89-8*1
C=O-C cation [C]=[O+][C]1576.21583.3± 2.3kJ/mol40.0203 ±
0.0016
83483-98-1*0
Dinitrogen tetraoxide O=N(=O)N(=O)=O-37.87-27.02± 0.19kJ/mol92.0111 ±
0.0012
10544-72-6*500
Methoxycarbonyl CO[C]=O-149.8-157.5± 1.9kJ/mol59.0440 ±
0.0017
16481-04-2*0
Diazene cation N=[NH+]1132.581125.67± 0.67kJ/mol30.02881 ±
0.00020
76986-17-9*1
2-Hydroxyethylium [CH2+]CO1019.61007.5± 1.6kJ/mol45.0600 ±
0.0017
38607-31-7*0
Dinitrogen anion N#[N-]193.6193.6± 1.6kJ/mol28.01403 ±
0.00014
12185-02-3*0
(Formyloxy)methyl O=CO[CH2]-148.7-156.8± 1.5kJ/mol59.0440 ±
0.0017
3122-12-1*0
Fluorine atom [F]82.09883.883± 0.048kJ/mol18.99840320 ±
0.00000050
14762-94-8*2
Hydrogen peroxide OO-190.75± 0.30kJ/mol34.01468 ±
0.00062
7722-84-1*800
Carbon atom [C]2.3911.863± 0.044kJ/mol12.01070 ±
0.00080
7440-44-0*501
Methyl nitrite CON=O-52.35-64.30± 0.89kJ/mol61.0401 ±
0.0010
624-91-9*1
Methyl nitrite CON=O-88.69± 0.56kJ/mol61.0401 ±
0.0010
624-91-9*500
Carbonic acid OC(=O)O-602.78-612.09± 0.79kJ/mol62.0248 ±
0.0012
463-79-6*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
Water O-286.302-285.830± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*499
Isocyanogen anion [C-]#[N]C#N383.9388.0± 2.5kJ/mol52.0354 ±
0.0016
*83951-85-3*0
Trihydrogen cation [H]1[H+][H]11110.5771106.695± 0.013kJ/mol3.02327 ±
0.00021
28132-48-1*1
Water anion [H][O-][H]-50.1-53.0± 4.3kJ/mol18.01583 ±
0.00033
12259-30-2*0
Water O-286.302-292.743± 0.027kJ/mol18.01528 ±
0.00033
7732-18-5*509
Dioxygen difluoride cation FO[O+]F1291.41288.2± 4.6kJ/mol69.99506 ±
0.00060
*7783-44-0*0
Peroxyformic acid C(=O)OO-279.8-288.9± 1.1kJ/mol62.0248 ±
0.0012
107-32-4*0
Hydrogen isocyanide anion [C-]=N191.56191.74± 0.38kJ/mol27.02593 ±
0.00081
96913-22-3*0
Succinic acid OC(=O)CCC(=O)O-795.63-817.77± 0.61kJ/mol118.0880 ±
0.0034
110-15-6*0
Diiodine cation I[I+]963.523960.408± 0.018kJ/mol253.808391 ±
0.000060
28712-14-3*0
Oxirene C1=CO1272.81272.12± 0.98kJ/mol42.0367 ±
0.0016
157-18-6*0
Oxirene C1=CO1388.7385.4± 2.6kJ/mol42.0367 ±
0.0016
157-18-6*1
Hydrodioxonitrogen cation [NH+](=O)[O]1129.61123.0± 3.2kJ/mol47.01293 ±
0.00061
252986-76-8*0
Ethylidene [CH]C361.45354.47± 0.82kJ/mol28.0532 ±
0.0016
4218-50-2*0
Oxoniumyl ion [H][O+][H]978.722975.571± 0.029kJ/mol18.01473 ±
0.00033
56583-62-1*2
Hydrogen peroxide cation O[OH+]930.94924.05± 0.94kJ/mol34.01413 ±
0.00062
12325-10-9*21
Vinyl alcohol cation C=C[OH+]779.2768.3± 1.2kJ/mol44.0520 ±
0.0017
57239-63-1*0
Methanediol C(O)O-379.05-392.44± 0.95kJ/mol48.0413 ±
0.0010
463-57-0*0
Trioxidanyl OO[O]26.2923.01± 0.19kJ/mol49.00614 ±
0.00090
12500-78-6*2
Cyanogen N#CC#N273.93289.18± 0.43kJ/mol52.0349 ±
0.0016
460-19-5*500
1,1-Dibromoethane CC(Br)Br-66.4± 1.4kJ/mol187.8612 ±
0.0026
557-91-5*500
Xenon dication [Xe++]3194.143194.14± 0.36kJ/mol131.2889 ±
0.0200
14066-95-6*0
Trioxidaniumyl O[O+]O927.1918.2± 1.3kJ/mol50.01353 ±
0.00091
161321-37-5*0
Hydrodioxonitrate [NH](=O)[O-]-62.4-68.8± 3.3kJ/mol47.01403 ±
0.00061
61508-71-2*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.± 76.kJ/mol39.94855 ±
0.00100
16544-90-4*1
Argon anion [Ar-]23.23.± 76.kJ/mol39.94855 ±
0.00100
16544-90-4*0
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
Neon cation [Ne+]2080.6622080.769± 0.0011kJ/mol20.17915 ±
0.00060
14782-23-1*0
Argon cation [Ar+]1520.5711520.580± 0.0011kJ/mol39.94745 ±
0.00100
14791-69-6*0
Helium anion [He-]1868.431868.43± 0.11kJ/mol4.0031506 ±
0.0000020
14452-58-5*2
Argon anion [Ar-]1111.1161111.116± 0.099kJ/mol39.94855 ±
0.00100
16544-90-4*2
Argon dimer [Ar][Ar]-1.012-6.346± 0.0092kJ/mol79.8960 ±
0.0020
12595-59-4*0
Hydron 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. 1.122b of the Thermochemical Network (2016); available at ATcT.anl.gov
4   B. Ruscic,
Active Thermochemical Tables: Sequential Bond Dissociation Enthalpies of Methane, Ethane, and Methanol and the Related Thermochemistry.
J. Phys. Chem. A 119, 7810-7837 (2015) [DOI: 10.1021/acs.jpca.5b01346]
5   S. J. Klippenstein, L. B. Harding, and B. Ruscic,
Ab initio Computations and Active Thermochemical Tables Hand in Hand: Heats of Formation of Core Combustion Species.
J. Phys. Chem. A 121, 6580-6602 (2017) [DOI: 10.1021/acs.jpca.7b05945]
6   T. L. Nguyen, J. H. Baraban, B. Ruscic, and J. F. Stanton,
On the HCN – HNC Energy Difference.
J. Phys. Chem. A 119, 10929-10934 (2015) [DOI: 10.1021/acs.jpca.5b08406]
7   B. Ruscic,
Uncertainty Quantification in Thermochemistry, Benchmarking Electronic Structure Computations, and Active Thermochemical Tables.
Int. J. Quantum Chem. 114, 1097-1101 (2014) [DOI: 10.1002/qua.24605]

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 [7]).
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.