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 551 to 600)
  • 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 401 to 450, reactions 451 to 500, reactions 501 to 550, 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
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias

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 551 to 600

3 +  =

By formula: 3H₂ + C₈H₁₀ = C₈H₁₆

 +  =

By formula: H₂ + C₆H₁₂ = C₆H₁₄

 +  =

By formula: H₂ + C₆H₁₂ = C₆H₁₄

 +  =

By formula: H₂ + C₆H₁₂ = C₆H₁₄

 +  =

By formula: H₂ + C₁₂H₂₄ = C₁₂H₂₆

 +  =

By formula: H₂ + C₁₂H₂₄ = C₁₂H₂₆

2 +  =

By formula: 2H₂ + C₅H₆O₂ = C₅H₁₀O₂

2 +  =

By formula: 2H₂ + C₇H₁₀O₂ = C₇H₁₄O₂

3 +  =

By formula: 3H₂ + C₈H₁₂ = C₈H₁₈

C₁₀H₁₁ClZr (cr) +  (l) = C₁₁H₁₃ClOZr (cr) +  (g)

By formula: C₁₀H₁₁ClZr (cr) + CH₄O (l) = C₁₁H₁₃ClOZr (cr) + H₂ (g)

C₁₀H₁₁ClZr (cr) +  (l) = C₁₂H₁₅ClOZr (cr) +  (g)

By formula: C₁₀H₁₁ClZr (cr) + C₂H₆O (l) = C₁₂H₁₅ClOZr (cr) + H₂ (g)

3 +  =

By formula: 3H₂ + C₈H₁₀ = C₈H₁₆

2 +  =

By formula: 2H₂ + C₄H₂O₄ = C₄H₆O₄

C₁₁H₁₉F₃O +  =

By formula: C₁₁H₁₉F₃O + H₂ = C₁₁H₂₁F₃O

 +  =

By formula: H₂ + C₅H₈O₂ = C₅H₁₀O₂

2 +  =

By formula: 2H₂ + C₉H₆O₂ = C₉H₁₀O₂

4 +  =

By formula: 4H₂ + C₈H₁₀ = C₈H₁₈

2 +  =

By formula: 2H₂ + C₈H₁₀ = C₈H₁₄

4 +  =

By formula: 4H₂ + C₈H₁₀ = C₈H₁₈

=  + 

By formula: C₆H₁₄ = H₂ + C₆H₁₂

 +  =

By formula: H₂ + C₉H₁₆ = C₉H₁₈

2 +  = C₁₂H₂₀

By formula: 2H₂ + C₁₂H₁₆ = C₁₂H₂₀

 +  =

By formula: H₂ + C₅H₁₀ = C₅H₁₂

=  + 

By formula: C₈H₁₈ = H₂ + C₈H₁₆

=  + 

By formula: C₈H₁₈ = H₂ + C₈H₁₆

=  + 

By formula: C₈H₁₈ = H₂ + C₈H₁₆

=  + 

By formula: C₈H₁₈ = H₂ + C₈H₁₆

 +  =

By formula: H₂ + C₅H₁₀ = C₅H₁₂

 +  =

By formula: H₂ + C₅H₁₀ = C₅H₁₂

 +  = ( • )

By formula: Li⁺ + H₂ = (Li⁺ • H₂)

 +  =

By formula: H₂ + C₇H₁₂O = C₇H₁₄O

=  + 

By formula: C₈H₁₈ = H₂ + C₈H₁₆

=  + 

By formula: C₈H₁₈ = H₂ + C₈H₁₆

2 +  =

By formula: 2H₂ + C₆H₁₀ = C₆H₁₄

 +  =

By formula: H₂ + C₁₀H₁₀O = C₁₀H₁₂O

=  + 

By formula: C₈H₁₈ = C₈H₁₆ + H₂

 +  =

By formula: H₂ + C₁₀H₁₀O₂ = C₁₀H₁₂O₂

=  + 

By formula: C₅H₁₂O = C₅H₁₀O + H₂

 +  =

By formula: H₂ + C₆H₈O₄ = C₆H₁₀O₄

 +  =

By formula: H₂ + C₁₅H₁₂O₂ = C₁₅H₁₄O₂

 +  =

By formula: H₂ + C₁₅H₁₂O = C₁₅H₁₄O

3 +  =

By formula: 3H₂ + C₉H₁₂ = C₉H₁₈

 +  =

By formula: H₂ + C₄H₆O₂ = C₄H₈O₂

 + 3 =

By formula: C₉H₁₂ + 3H₂ = C₉H₁₈

3 +  =

By formula: 3H₂ + C₉H₁₂ = C₉H₁₈

3 +  =

By formula: 3H₂ + C₉H₁₂ = C₉H₁₈

3 +  =

By formula: 3H₂ + C₉H₁₂ = C₉H₁₈

3 +  =

By formula: 3H₂ + C₉H₁₂ = C₉H₁₈

3 +  =

By formula: 3H₂ + C₉H₁₂ = C₉H₁₈

=  + 

By formula: C₅H₁₂O = C₅H₁₀O + H₂

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.

Roth, Scholz, et al., 1982
Roth, W.R.; Scholz, B.P.; Breuckmann, R.; Jelich, K.; Lennartz, H.W., Thermolysis of 1,2,6,7-octatetraene, Chem. Ber., 1982, 115, 1934-1946. [all data]

Rogers, Crooks, et al., 1987
Rogers, D.W.; Crooks, E.; Dejroongruang, K., Enthalpies of hydrogenation of the hexenes, J. Chem. Thermodyn., 1987, 19, 1209-1215. [all data]

Doering, Roth, et al., 1989
Doering, W.E.; Roth, W.R.; Bauer, F.; Breuckmann, R.; Ebbrecht, T.; Herbold, M.; Schmidt, R.; Lennartz, H-W.; Lenoir, D.; Boese, R., Rotational barriers of strained olefines, Chem. Ber., 1989, 122, 1263-1266. [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]

Diogo, Simoni, et al., 1993
Diogo, H.P.; Simoni, J.A.; Minas da Piedade, M.E.; Dias, A.R.; Martinho Simões, J.A., J. Am. Chem. Soc., 1993, 115, 2764. [all data]

Gajewski, Gee, et al., 1990
Gajewski, J.J.; Gee, K.R.; Jurayj, J., Energetic and rates of the trifluoromethyl group at C-2 and C-4 on the aliphatic claisen rearrangement, J. Am. Chem. Soc., 1990, 90, 1813-1822. [all data]

Vilcu and Perisanu, 1980
Vilcu, R.; Perisanu, S., The ideal gas state enthalpies of formation of some monomers, Rev. Roum. Chim., 1980, 25, 619-624. [all data]

Kennedy, Shomate, et al., 1938
Kennedy, Wm.D.; Shomate, C.H.; Parks, G.P., Thermal data on organic compounds. XVIII. The heat capacity of and entropy of t-butylethylene, J. Am. Chem. Soc., 1938, 60, 1507-1509. [all data]

Roth, Adamczak, et al., 1991
Roth, W.R.; Adamczak, O.; Breuckmann, R.; Lennartz, H.-W.; Boese, R., Die Berechnung von Resonanzenergien; das MM2ERW-Kraftfeld, Chem. Ber., 1991, 124, 2499-2521. [all data]

Kistiakowsky, Ruhoff, et al., 1936
Kistiakowsky, G.B.; Ruhoff, J.R.; Smith, H.A.; Vaughan, W.E., Heats of organic reactions. III. Hydrogenation of some higher olefins, J. Am. Chem. Soc., 1936, 58, 137-145. [all data]

Eliseev, 1986
Eliseev, N.A., Thermodynamic calculation of the equilibrium composition of isomeric octenes in dehydrogenation of n-octane, Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1986, 29, 26-29. [all data]

Egger and Benson, 1966
Egger, K.W.; Benson, S.W., Nitric oxide and iodine catalyzed isomerization of olefins. VI. Thermodynamic data from equilibrium studies of the geometrical and positional isomerization of n-pentenes, J. Am. Chem. Soc., 1966, 88, 236-240. [all data]

Wu, 1979
Wu, C.H., Binding Energies of LiH2 and LiH2+ and the Ionization Potential of LiH2, J. Chem. Phys., 1979, 71, 2, 783, https://doi.org/10.1063/1.438367 . [all data]

Dokuchaeva, Sibarov, et al., 1981
Dokuchaeva, T.G.; Sibarov, d.A.; Timofeev, V.F.; Proskuryakov, V.A., Kinetics of the dehydrogenation of 2-methylcyclohexanol to 2-methylcyclohexanone over a platinum catalyst, J. Appl. Chem. USSR, 1981, 54, 1140-1146. [all data]

Veselova and Sul'man, 1980
Veselova, M.E.; Sul'man, E.M., Effect of the chemical structure of α,β-unsaturated esters and ketones on the selectivity of their hydrogenation, Svoistva Veshchestv i Stroenie Molekul, Kalinin, 1980, 140-143. [all data]

Connett, 1970
Connett, J.E., Chemical equilibria. Part III. Dehydrogenation of pentan-1-ol, pentan-2-ol, and 3-methylbutan-2-ol, J. Chem. Soc. A, 1970, 1284-1286. [all data]

Miki, 1975
Miki, Y., The thermodynamic properties of C₉H₁₈ naphthenes. I. The determination of the equilibrium constants of the hydrogenation of propyl- and isopropylbenzene and ethyltoluenes, Bull. Chem. Soc. Jpn., 1975, 48, 201-208. [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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