Hydrogen

• Formula: H₂
• Molecular weight: 2.01588
• IUPAC Standard InChI: InChI=1S/H2/h1H Copy

  
• IUPAC Standard InChIKey: UFHFLCQGNIYNRP-UHFFFAOYSA-N Copy
• CAS Registry Number: 1333-74-0
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Isotopologues:
  • tritium
  • deuterium hydride
  • Deuterium
• Other names: Dihydrogen; o-Hydrogen; p-Hydrogen; Molecular hydrogen; H2; UN 1049; UN 1966
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Reaction thermochemistry data (reactions 351 to 400)
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 100, reactions 101 to 150, reactions 151 to 200, reactions 201 to 250, reactions 251 to 300, reactions 301 to 350, reactions 401 to 450, reactions 451 to 500, reactions 501 to 550, reactions 551 to 600, reactions 601 to 621
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • Mass spectrum (electron ionization)
  • Constants of diatomic molecules
  • Fluid Properties
• Data at other public NIST sites:
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
• Options:
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Reaction thermochemistry data

Go To: Top, References, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
MS - José A. Martinho Simões

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Reactions 351 to 400

 +  =

By formula: H₂ + C₈H₁₆ = C₈H₁₈

2 +  =

By formula: 2H₂ + C₁₉H₃₄O₂ = C₁₉H₃₈O₂

 +  =

By formula: C₁₇H₃₂O₂ + H₂ = C₁₇H₃₄O₂

 +  =

By formula: H₂ + C₇H₁₄ = C₇H₁₆

 +  =

By formula: H₂ + C₇H₁₄ = C₇H₁₆

 +  =

By formula: H₂ + C₈H₁₆ = C₈H₁₈

 +  =

By formula: H₂ + C₈H₁₆ = C₈H₁₈

 +  =

By formula: C₈H₁₆ + H₂ = C₈H₁₈

 +  =

By formula: C₈H₁₆ + H₂ = C₈H₁₈

3 +  =

By formula: 3H₂ + C₁₀H₁₀ = C₁₀H₁₆

 +  =

By formula: H₂ + C₁₀H₁₄ = C₁₀H₁₆

 +  =

By formula: H₂ + C₆H₁₀O₂ = C₆H₁₂O₂

3 +  =

By formula: 3H₂ + C₈H₈ = C₈H₁₄

 +  =

By formula: H₂ + C₈H₁₈N₂ = C₈H₂₀N₂

3 +  =  + 2

By formula: 3H₂ + C₂Cl₂F₂ = C₂H₄F₂ + 2HCl

C₂₀H₃₂Zr (solution) +  (solution) = C₂₂H₃₃F₃OZr (solution) +  (g)

By formula: C₂₀H₃₂Zr (solution) + C₂H₃F₃O (solution) = C₂₂H₃₃F₃OZr (solution) + H₂ (g)

C₂₆H₃₆OZr (solution) +  (solution) = C₃₂H₄₀O₂Zr (solution) +  (g)

By formula: C₂₆H₃₆OZr (solution) + C₆H₆O (solution) = C₃₂H₄₀O₂Zr (solution) + H₂ (g)

2 +  =

By formula: 2H₂ + C₈H₁₄ = C₈H₁₈

2 +  =

By formula: 2H₂ + C₉H₁₆ = C₉H₂₀

2 +  =

By formula: 2H₂ + C₉H₁₆ = C₉H₂₀

2 +  =

By formula: 2H₂ + C₉H₁₆ = C₉H₂₀

 +  =

By formula: H₂ + C₇H₁₀ = C₇H₁₂

 +  =

By formula: H₂ + C₇H₁₄ = C₇H₁₆

2 +  =

By formula: 2H₂ + C₉H₈ = C₉H₁₂

 +  =

By formula: H₂ + C₁₁H₂₂ = C₁₁H₂₄

 +  =

By formula: H₂ + C₁₃H₂₆ = C₁₃H₂₈

 +  =

By formula: C₁₄H₂₈ + H₂ = C₁₄H₃₀

 +  =

By formula: H₂ + C₁₇H₃₄ = C₁₇H₃₆

 +  =

By formula: H₂ + C₂₀H₄₀ = C₂₀H₄₂

2 +  =

By formula: 2H₂ + C₁₀H₁₀ = C₁₀H₁₄

 +  =

By formula: H₂ + C₇H₁₂ = C₇H₁₄

 +  =

By formula: H₂ + C₈H₁₆ = C₈H₁₈

 +  =

By formula: H₂ + C₁₉H₃₆O₂ = C₁₉H₃₈O₂

=  + 

By formula: C₁₀H₁₂ = C₁₀H₁₀ + H₂

2 +  =

By formula: 2H₂ + C₅H₆ = C₅H₁₀

 +  =

By formula: C₁₇H₃₂O₂ + H₂ = C₁₇H₃₄O₂

 +  =

By formula: H₂ + C₁₀H₂₀ = C₁₀H₂₂

 + 2 =

By formula: C₁₉H₃₄O₂ + 2H₂ = C₁₉H₃₈O₂

3 +  =

By formula: 3H₂ + C₁₉H₃₂O₂ = C₁₉H₃₈O₂

 +  =

By formula: H₂ + C₈H₁₆ = C₈H₁₈

2 +  =

By formula: 2H₂ + C₁₀H₂₀N₂ = C₁₀H₂₄N₂

3 +  =

By formula: 3H₂ + C₁₀H₁₀ = C₁₀H₁₆

 +  =  + 

By formula: H₂ + C₂Cl₂F₂ = C₂HClF₂ + HCl

C₂₂H₃₃F₃OZr (solution) +  (solution) = C₂₄H₃₄F₆O₂Zr (solution) +  (g)

By formula: C₂₂H₃₃F₃OZr (solution) + C₂H₃F₃O (solution) = C₂₄H₃₄F₆O₂Zr (solution) + H₂ (g)

 +  =

By formula: C₉H₁₈ + H₂ = C₉H₂₀

 + 2 =

By formula: C₇H₁₂ + 2H₂ = C₇H₁₆

2 +  =

By formula: 2H₂ + C₇H₁₂ = C₇H₁₆

2 +  =

By formula: 2H₂ + C₈H₁₄ = C₈H₁₈

 +  =

By formula: H₂ + C₁₂H₁₆ = C₁₂H₁₈

2 +  =

By formula: 2H₂ + C₉H₁₆ = C₉H₂₀

References

Go To: Top, Reaction thermochemistry data, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Rogers, Dejroongruang, et al., 1992
Rogers, D.W.; Dejroongruang, K.; Samuel, S.D.; Fang, W.; Zhao, Y., Enthalpies of hydrogenation of the octenes and the methylheptenes, J. Chem. Thermodyn., 1992, 24, 561-565. [all data]

Rogers and Siddiqui, 1975
Rogers, D.W.; Siddiqui, N.A., Heats of hydrogenation of large molecules. I. Esters of unsaturated fatty acids, J. Phys. Chem., 1975, 79, 574-577. [all data]

Rogers and Dejroongruang, 1989
Rogers, D.W.; Dejroongruang, K., Enthalpies of hydrogenation of the dimethylpentenes, ethylpentenes, methylbutene, and trimethylbutene, J. Chem. Thermodyn., 1989, 21, 1115-1120. [all data]

Liebman, Paquette, et al., 1986
Liebman, J.F.; Paquette, L.A.; Peterson, J.R.; Rogers, D.W., Is triquinacene homoaromatic? A thermochemical answer in the affirmative, J. Am. Chem. Soc., 1986, 108, 8267-8268. [all data]

Allinger, Glaser, et al., 1981
Allinger, N.L.; Glaser, J.A.; Davis, H.E., Heats of hydrogenation of some vinyl ethers and related compounds, J. Org. Chem., 1981, 46, 658-661. [all data]

Turner, 1964
Turner, R.B., Heat of Hydrogenation of Bicyclo[2.2.2]octa-2,5,7-triene, J. Am. Chem. Soc., 1964, 86, 3586-3587. [all data]

Engel, Owens, et al., 1993
Engel, P.S.; Owens, W.H.; Wang, C., The heat of oxidation of 1,2-di-n-butylhydrazine to azo-n-butane, J. Phys. Chem., 1993, 97, 10486-10488. [all data]

Lacher, Kianpour, et al., 1956
Lacher, J.R.; Kianpour, A.; Oetting, F.; Park, J.D., Reaction calorimetry. The hydrogenation of organic fluorides and chlorides, Trans. Faraday Soc., 1956, 52, 1500-1508. [all data]

Schock and Marks, 1988
Schock, L.E.; Marks, T.J., J. Am. Chem. Soc., 1988, 110, 7701. [all data]

Rogers, Dagdagan, et al., 1979
Rogers, D.W.; Dagdagan, O.A.; Allinger, N.L., Heats of hydrogenation and formation of linear alkynes and a molecular mechanics interpretation, J. Am. Chem. Soc., 1979, 101, 671-676. [all data]

Flury, Grob, et al., 1988
Flury, P.; Grob, C.A.; Wang, G.Y.; Lennatz, H.-W.; Roth, W.R., 113. Norbornanes. Bridging strain in norbornyl and oxanorbornyl cations, Helv. Chim. Acta, 1988, 71, 1017-1024. [all data]

Rogers and Dejroongruang, 1988
Rogers, D.W.; Dejroongruang, K., Enthalpies of hydrogenation of the n-heptenes and the methylhexenes, J. Chem. Thermodyn., 1988, 20, 675-680. [all data]

Davis, Allinger, et al., 1985
Davis, H.E.; Allinger, N.L.; Rogers, D.W., Enthalpies of hydrogenation of phenylalkynes: indirect determination of the enthalpy of formation of diphenylcyclopropenone, J. Org. Chem., 1985, 50, 3601-3604. [all data]

Rogers and Skanupong, 1974
Rogers, D.W.; Skanupong, S., Heats of hydrogenation of sixteen terminal monoolefins. The alternating effect, J. Phys. Chem., 1974, 78, 2569-2572. [all data]

Allinger, Dodziuk, et al., 1982
Allinger, N.L.; Dodziuk, H.; Rogers, D.W.; Naik, S.N., Heats of hydrogenation and formation of some 5-membered ring compounds by molecular mechanics calculations and direct measurements, Tetrahedron, 1982, 38, 1593-1597. [all data]

Lebedev, Rozhkov, et al., 1983
Lebedev, N.N.; Rozhkov, V.I.; Odabashyan, G.V.; Rozhkova, I.O.; Zaidman, O.A., Dehydrogenation of p-diethylbenzene, Neftekhimiya, 1983, 23, 508-510. [all data]

Roth, Klarner, et al., 1980
Roth, W.R.; Klarner, F.-G.; Lennartz, H.-W., Heats of hydrogenation. II. Heat of hydrogenation of bicyclo[2.1.0]pent-2-ene, an antiaromatic system, Chem. Ber., 1980, 113, 1806-1818. [all data]

Hafelinger and Steinmann, 1977
Hafelinger, G.; Steinmann, L., Heat of hydrogenation of compounds containing isolated and conjugted C=N bouble bonds, Angew. Chem. Int. Ed. Engl., 1977, 16, 47-48. [all data]

Roth, Langer, et al., 1991
Roth, W.R.; Langer, R.; Ebbrecht, T.; Beitat, A.; Lennartz, H.-W., 2,3,5,6-Tetramethylen-1,4-cyclohexadiyl, Chem. Ber., 1991, 124, 2751-2760. [all data]

Turner, Jarrett, et al., 1973
Turner, R.B.; Jarrett, A.D.; Goebel, P.; Mallon, B.J., Heats of hydrogenation. 9. Cyclic acetylenes and some miscellaneous olefins, J. Am. Chem. Soc., 1973, 95, 790-792. [all data]

Notes

Go To: Top, Reaction thermochemistry data, References

• Symbols used in this document:
  

  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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