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 401 to 450)
  • 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 351 to 400, 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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 401 to 450

2 +  =

By formula: 2H₂ + C₁₀H₁₈ = C₁₀H₂₂

2 +  =

By formula: 2H₂ + C₁₀H₁₈ = C₁₀H₂₂

2 +  =

By formula: 2H₂ + C₁₀H₁₈ = C₁₀H₂₂

2 +  =

By formula: 2H₂ + C₁₀H₁₈ = C₁₀H₂₂

 +  =

By formula: C₁₉H₃₆O₂ + H₂ = C₁₉H₃₈O₂

 +  =

By formula: H₂ + C₁₆H₃₂ = C₁₆H₃₄

 +  =

By formula: C₁₈H₃₆ + H₂ = C₁₈H₃₈

 +  =

By formula: C₆H₁₀ + H₂ = C₆H₁₂

 +  =

By formula: H₂ + C₅H₈ = C₅H₁₀

2 +  =

By formula: 2H₂ + C₈H₁₀ = C₈H₁₄

2 +  =

By formula: 2H₂ + C₈H₁₀ = C₈H₁₄

 +  =

By formula: H₂ + C₆H₁₀O₂ = C₆H₁₂O₂

 +  =

By formula: H₂ + C₈H₁₂O = C₈H₁₄O

 +  =

By formula: H₂ + C₅H₁₁N = C₅H₁₃N

2 +  =

By formula: 2H₂ + C₁₆H₂₈ = C₁₆H₃₂

 +  =

By formula: H₂ + C₃H₄O₂ = C₃H₆O₂

 +  =

By formula: H₂ + C₄H₆O₂ = C₄H₈O₂

2 +  =

By formula: 2H₂ + C₆H₁₀ = C₆H₁₄

2 +  =

By formula: 2H₂ + C₆H₁₀ = C₆H₁₄

2 +  =

By formula: 2H₂ + C₇H₁₂ = C₇H₁₆

2 +  =

By formula: 2H₂ + C₁₀H₁₈ = C₁₀H₂₂

2 +  =

By formula: 2H₂ + C₁₄H₂₄ = C₁₄H₂₈

 +  =

By formula: H₂ + C₁₆H₃₀ = C₁₆H₃₂

2 +  =

By formula: 2H₂ + C₈H₁₄O₃ = C₈H₁₈O₃

 +  =

By formula: C₄H₆O + H₂ = C₄H₈O

 +  =

By formula: H₂ + C₄H₆O = C₄H₈O

 +  =

By formula: H₂ + C₁₆H₃₀ = C₁₆H₃₂

2 +  =

By formula: 2H₂ + C₁₄H₂₄ = C₁₄H₂₈

 +  =

By formula: H₂ + C₁₄H₂₆ = C₁₄H₂₈

2 +  =

By formula: 2H₂ + C₆H₁₀ = C₆H₁₄

 +  =

By formula: C₅H₈O + H₂ = C₅H₁₀O

 +  =

By formula: H₂ + C₆H₁₀O₃ = C₆H₁₂O₃

3 +  =

By formula: 3H₂ + C₄H₄N₂ = C₄H₁₀N₂

 +  =

By formula: H₂ + C₆H₁₃N = C₆H₁₅N

 +  =

By formula: H₂ + C₁₄H₂₆ = C₁₄H₂₈

 +  =

By formula: H₂ + C₁₄H₂₆ = C₁₄H₂₈

 +  =

By formula: H₂ + C₁₄H₂₆ = C₁₄H₂₈

 +  =

By formula: H₂ + C₁₀H₁₂ = C₁₀H₁₄

=  + 

By formula: C₁₀H₁₄ = H₂ + C₁₀H₁₂

 +  =

By formula: H₂ + C₈H₁₂ = C₈H₁₄

 +  =

By formula: H₂ + C₈H₁₇N = C₈H₁₉N

 +  =

By formula: H₂ + C₁₂H₂₂ = C₁₂H₂₄

 +  =

By formula: C₁₂H₂₂ + H₂ = C₁₂H₂₄

 +  =

By formula: H₂ + C₁₀H₁₂ = C₁₀H₁₄

 +  =

By formula: H₂ + C₁₁H₁₀ = C₁₁H₁₂

2 +  =

By formula: 2H₂ + C₄H₄O₂ = C₄H₈O₂

 + 3 =

By formula: C₅₇H₁₀₄O₆ + 3H₂ = C₅₇H₁₁₀O₆

9 + C₅₇H₉₂O₆ =

By formula: 9H₂ + C₅₇H₉₂O₆ = C₅₇H₁₁₀O₆

 +  =

By formula: H₂ + C₆H₁₀N₂ = C₆H₁₄N₂

3 +  =

By formula: 3H₂ + C₅₇H₁₀₄O₆ = C₅₇H₁₁₀O₆

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, 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]

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 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]

Chesick, 1963
Chesick, J.P., Kinetics of the thermal interconversion of 2-methylmethylenecyclopropane and ethylidenecyclopropane, J. Am. Chem. Soc., 1963, 85, 2720-2723. [all data]

Rogers, Loggins, et al., 1990
Rogers, D.W.; Loggins, S.A.; Samuel, S.D.; Finnerty, M.A.; Liebman, J.F., Homoaromaticity and homoconjugation in the quinacenes: biquinacene, triquinacene, and hexaquinacene, Struct. Chem., 1990, 1, 481-489. [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]

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]

Sicher, Svoboda, et al., 1968
Sicher, J.; Svoboda, M.; Mallon, B.J.; Turner, R.B., Stereochemical studies. Part XLVII. Conformational analysis of many-membered ring compounds. The cyclododecenes, J. Chem. Soc. B, 1968, 441-447. [all data]

Skinner and Snelson, 1959
Skinner, H.A.; Snelson, A., Heats of hydrogenation Part 3., Trans. Faraday Soc., 1959, 55, 405-407. [all data]

Sicher, Svoboda, et al., 1966
Sicher, J.; Svoboda, M.; Zavada, J.; Turner, R.B.; Goebel, P., Sterochemical studies - XXXVI. An approach to conformational analysis of medium ring compounds. Unsaturated ten-membered ring derivates, Tetrahedron, 1966, 22, 659-671. [all data]

Roth, Klarner, et al., 1992
Roth, W.R.; Klarner, F.-G.; Siepert, G.; Lennartz, H.-W., Zur Frage der Homoaromatizitat von Norcaradien und Cycloheptatrien, Chem. Ber., 1992, 125, 217-224. [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]

Flitcroft and Skinner, 1958
Flitcroft, T.L.; Skinner, H.A., Heats of hydrogenation Part 2.-Acetylene derivatives, Trans. Faraday Soc., 1958, 54, 47-53. [all data]

Rogers and Choudhury, 1978
Rogers, D.W.; Choudhury, D.N., Heats of hydrogenation of large molecules. Part 3 - Five simple unsaturated triglycerides (triacylglycerols), J. Chem. Soc. Faraday Trans. 1, 1978, 74, 2868-2872. [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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