Methane

• Formula: CH₄
• Molecular weight: 16.0425
• IUPAC Standard InChI: InChI=1S/CH4/h1H4 Copy

  
• IUPAC Standard InChIKey: VNWKTOKETHGBQD-UHFFFAOYSA-N Copy
• CAS Registry Number: 74-82-8
• 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.
• Other names: Marsh gas; Methyl hydride; CH4; Fire Damp; R 50; Biogas; R 50 (refrigerant)
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Reaction thermochemistry data (reactions 51 to 100)
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data: reactions 1 to 50, reactions 101 to 112
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Vibrational and/or electronic energy levels
  • Fluid Properties
• Data at other public NIST sites:
  • Microwave spectra (on physics lab web site)
  • Electron-Impact Ionization Cross Sections (on physics web site)
  • Gas Phase Kinetics Database
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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:
MS - José A. Martinho Simões
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - 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 51 to 100

 (g) =  (g) +  (g)

By formula: C₂H₆Zn (g) = CH₃Zn (g) + CH₄ (g)

C₂H₆Cd (g) = CH₃Cd (g) +  (g)

By formula: C₂H₆Cd (g) = CH₃Cd (g) + CH₄ (g)

 +  = CH₄Cl^-

By formula: Cl^- + CH₄ = CH₄Cl^-

 +  = CH₄I^-

By formula: I^- + CH₄ = CH₄I^-

 +  = CH₄Br^-

By formula: Br^- + CH₄ = CH₄Br^-

(C₂H₅⁺ • ) +  = (C₂H₅⁺ • 2)

By formula: (C₂H₅⁺ • CH₄) + CH₄ = (C₂H₅⁺ • 2CH₄)

(C₃H₇⁺ • ) +  = (C₃H₇⁺ • 2)

By formula: (C₃H₇⁺ • CH₄) + CH₄ = (C₃H₇⁺ • 2CH₄)

(C₄H₉⁺ • ) +  = (C₄H₉⁺ • 2)

By formula: (C₄H₉⁺ • CH₄) + CH₄ = (C₄H₉⁺ • 2CH₄)

 (g) = CH₃Hg (g) +  (g)

By formula: C₂H₆Hg (g) = CH₃Hg (g) + CH₄ (g)

 +  = CH₄F^-

By formula: F^- + CH₄ = CH₄F^-

C₉H₃₆F^- + 10 = C₁₀H₄₀F^-

By formula: C₉H₃₆F^- + 10CH₄ = C₁₀H₄₀F^-

CH₄F^- + 2 = C₂H₈F^-

By formula: CH₄F^- + 2CH₄ = C₂H₈F^-

C₂H₈F^- + 3 = C₃H₁₂F^-

By formula: C₂H₈F^- + 3CH₄ = C₃H₁₂F^-

C₃H₁₂F^- + 4 = C₄H₁₆F^-

By formula: C₃H₁₂F^- + 4CH₄ = C₄H₁₆F^-

C₄H₁₆F^- + 5 = C₅H₂₀F^-

By formula: C₄H₁₆F^- + 5CH₄ = C₅H₂₀F^-

C₅H₂₀F^- + 6 = C₆H₂₄F^-

By formula: C₅H₂₀F^- + 6CH₄ = C₆H₂₄F^-

C₆H₂₄F^- + 7 = C₇H₂₈F^-

By formula: C₆H₂₄F^- + 7CH₄ = C₇H₂₈F^-

C₇H₂₈F^- + 8 = C₈H₃₂F^-

By formula: C₇H₂₈F^- + 8CH₄ = C₈H₃₂F^-

C₈H₃₂F^- + 9 = C₉H₃₆F^-

By formula: C₈H₃₂F^- + 9CH₄ = C₉H₃₆F^-

CH₄Cl^- + 2 = C₂H₈Cl^-

By formula: CH₄Cl^- + 2CH₄ = C₂H₈Cl^-

 (g) =  (g) +  (g)

By formula: C₄H₁₂Sn (g) = C₃H₉Sn (g) + CH₄ (g)

 +  = ( • )

By formula: H₃O⁺ + CH₄ = (H₃O⁺ • CH₄)

H₃S⁺ +  = (H₃S⁺ • )

By formula: H₃S⁺ + CH₄ = (H₃S⁺ • CH₄)

 +  = ( • )

By formula: CF₃⁺ + CH₄ = (CF₃⁺ • CH₄)

C₄H₉⁺ +  = (C₄H₉⁺ • )

By formula: C₄H₉⁺ + CH₄ = (C₄H₉⁺ • CH₄)

 +  = ( • )

By formula: Na⁺ + CH₄ = (Na⁺ • CH₄)

C₁₂H₁₆Mo (cr) + 2( • 5.55) (solution) = C₁₀H₁₀Cl₂Mo (cr) + 2 (g)

By formula: C₁₂H₁₆Mo (cr) + 2(HCl • 5.55H₂O) (solution) = C₁₀H₁₀Cl₂Mo (cr) + 2CH₄ (g)

C₁₂H₁₆W (cr) + 2( • 5.55) (solution) = C₁₀H₁₀Cl₂W (cr) + 2 (g)

By formula: C₁₂H₁₆W (cr) + 2(HCl • 5.55H₂O) (solution) = C₁₀H₁₀Cl₂W (cr) + 2CH₄ (g)

( • 2) +  = ( • 3)

By formula: (Fe⁺ • 2CH₄) + CH₄ = (Fe⁺ • 3CH₄)

Enthalpy of reaction

( • 3) +  = ( • 4)

By formula: (Fe⁺ • 3CH₄) + CH₄ = (Fe⁺ • 4CH₄)

Enthalpy of reaction

( • 3) +  = ( • 4)

By formula: (Co⁺ • 3CH₄) + CH₄ = (Co⁺ • 4CH₄)

Enthalpy of reaction

C₆H₃O₅Re (cr) = 5 (g) +  (cr) +  (g)

By formula: C₆H₃O₅Re (cr) = 5CO (g) + Re (cr) + CH₄ (g)

( • ) +  = ( • 2)

By formula: (Fe⁺ • CH₄) + CH₄ = (Fe⁺ • 2CH₄)

Enthalpy of reaction

 (g) = C₃H₉Ge (g) +  (g)

By formula: C₄H₁₂Ge (g) = C₃H₉Ge (g) + CH₄ (g)

C₁₆H₃₄P₂Ru (solution) +  (solution) = C₁₆H₃₃IP₂Ru (solution) +  (solution)

By formula: C₁₆H₃₄P₂Ru (solution) + CH₃I (solution) = C₁₆H₃₃IP₂Ru (solution) + CH₄ (solution)

 +  = ( • )

By formula: Fe⁺ + CH₄ = (Fe⁺ • CH₄)

Enthalpy of reaction

 + 2 = 2 + 

By formula: H₂ + 2CH₃I = 2CH₄ + I₂

 (g) = C₂H₆Ga (g) +  (g)

By formula: C₃H₉Ga (g) = C₂H₆Ga (g) + CH₄ (g)

 (g) = C₂H₆In (g) +  (g)

By formula: C₃H₉In (g) = C₂H₆In (g) + CH₄ (g)

 (g) = C₂H₆Sb (g) +  (g)

By formula: C₃H₉Sb (g) = C₂H₆Sb (g) + CH₄ (g)

 (g) = C₂H₆Bi (g) +  (g)

By formula: C₃H₉Bi (g) = C₂H₆Bi (g) + CH₄ (g)

C₅MnO₅⁺ +  = (C₅MnO₅⁺ • )

By formula: C₅MnO₅⁺ + CH₄ = (C₅MnO₅⁺ • CH₄)

 (g) = C₃H₉Pb (g) +  (g)

By formula: C₄H₁₂Pb (g) = C₃H₉Pb (g) + CH₄ (g)

C₁₃H₂₄Zr (solution) +  (solution) = C₁₈H₂₁F₅OZr (solution) +  (g)

By formula: C₁₃H₂₄Zr (solution) + C₆HF₅O (solution) = C₁₈H₂₁F₅OZr (solution) + CH₄ (g)

C₁₈H₂₁F₅OZr (solution) +  (solution) = C₂₃H₁₈F₁₀O₂Zr (solution) +  (g)

By formula: C₁₈H₂₁F₅OZr (solution) + C₆HF₅O (solution) = C₂₃H₁₈F₁₀O₂Zr (solution) + CH₄ (g)

C₁₃H₂₄Hf (solution) +  (solution) = C₁₈H₂₁F₅HfO (solution) +  (g)

By formula: C₁₃H₂₄Hf (solution) + C₆HF₅O (solution) = C₁₈H₂₁F₅HfO (solution) + CH₄ (g)

C₁₈H₂₁F₅HfO (solution) +  (solution) = C₂₃H₁₈F₁₀HfO₂ (solution) +  (g)

By formula: C₁₈H₂₁F₅HfO (solution) + C₆HF₅O (solution) = C₂₃H₁₈F₁₀HfO₂ (solution) + CH₄ (g)

C₅H₁₁BrMg (solution) +  (solution) =  (solution) + CH₃BrMg (solution)

By formula: C₅H₁₁BrMg (solution) + CH₄ (solution) = C₅H₁₂ (solution) + CH₃BrMg (solution)

 (cr) + 2( • 5.55) (solution) =  (cr) + 2 (g)

By formula: C₁₂H₁₆Ti (cr) + 2(HCl • 5.55H₂O) (solution) = C₁₀H₁₀Cl₂Ti (cr) + 2CH₄ (g)

C₅O₅W (g) +  (g) = C₆H₄O₅W (g)

By formula: C₅O₅W (g) + CH₄ (g) = C₆H₄O₅W (g)

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.

Jackson, 1989
Jackson, R.L., Chem. Phys. Lett., 1989, 163, 315. [all data]

Smith and Patrick, 1983
Smith, G.P.; Patrick, R., Int. J. Chem. Kinet., 1983, 15, 167. [all data]

McMillen and Golden, 1982
McMillen, D.F.; Golden, D.M., Hydrocarbon bond dissociation energies, Ann. Rev. Phys. Chem., 1982, 33, 493. [all data]

Hiraoka, Mizuno, et al., 2001
Hiraoka, K.; Mizuno, T.; Iino, T.; Eguchi, D.; Yamabe, S., Characteristic changes of bond energies for gas-phase cluster ions of halide ions with methane and chloromethanes, J. Phys. Chem. A, 2001, 105, 20, 4887-4893, https://doi.org/10.1021/jp010143n . [all data]

Hiraoka, Mori, et al., 1993
Hiraoka, K.; Mori, T.; Yamabe, S., The Gas-Phase Solvation of C2H5+, s-C3H7+ and s-C4H9+ with CH4. The Isomeric Structures of C2H5+ and C2H5+.CH4, Chem. Phys. Lett., 1993, 207, 2-3, 178, https://doi.org/10.1016/0009-2614(93)87011-Q . [all data]

Baldwin, Lewis, et al., 1979
Baldwin, A.C.; Lewis, K.E.; Golden, D.M., Int. J. Chem. Kinet., 1979, 11, 529. [all data]

Bennet and Field, 1972
Bennet, S.L.; Field, F.H., Reversible Reactions of Gaseous Ions. V. The Methane - Water System at Low Temperatures, J. Am. Chem. Soc., 1972, 94, 15, 5188, https://doi.org/10.1021/ja00770a008 . [all data]

Bennet and Field, 1972, 2
Bennet, S.L.; Field, F.H., Reversible Reactions of Gaseous Ions. VI. The NH3 - CH4, H2S - CH4 and CF4 - CH4 Systems at Low Temperatures, J. Am. Chem. Soc., 1972, 94, 18, 6305, https://doi.org/10.1021/ja00773a009 . [all data]

Castleman, Peterson, et al., 1983
Castleman, A.W.; Peterson, K.I.; Upschulte, B.L.; Schelling, F.J., Energetics and Structure of Na+ Cluster Ions, Int. J. Mass Spectrom. Ion Phys., 1983, 47, 203, https://doi.org/10.1016/0020-7381(83)87171-X . [all data]

Calado, Dias, et al., 1978
Calado, J.C.G.; Dias, A.R.; Martinho Simões, J.A.; Ribeiro da Silva, M.A.V., J. Chem. Soc., Chem. Commun., 1978, 737.. [all data]

Calhorda, Dias, et al., 1987
Calhorda, M.J.; Dias, A.R.; Minas da Piedade M.E.; Salema, M.S.; Martinho Simões J.A., Organometallics, 1987, 6, 734. [all data]

Armentrout and Kickel, 1994
Armentrout, P.B.; Kickel, B.L., Gas Phase Thermochemistry of Transition Metal Ligand Systems: Reassessment of Values and Periodic Trends, in Organometallic Ion Chemistry, B. S. Freiser, ed, 1994. [all data]

Brown, Connor, et al., 1974
Brown, D.L.S.; Connor, J.A.; Skinner, H.A., J. Organometal. Chem., 1974, 81, 403. [all data]

Pedley and Rylance, 1977
Pedley, J.B.; Rylance, J., Computer Analysed Thermochemical Data: Organic and Organometallic Compounds, University of Sussex, Brigton, 1977. [all data]

Luo, Li, et al., 1995
Luo, L.; Li, C.; Cucullu, M.E.; Nolan, S.P., Organometallics, 1995, 14, 1333. [all data]

Carson, Carter, et al., 1961
Carson, A.S.; Carter, W.; Pedley, J.B., The thermochemistry of reductions caused by lithium aluminium hydride I. The C-I bond dissociation energy in CH₃I, Proc. Roy. Soc. London A, 1961, 260, 550-557. [all data]

Hop and McMahon, 1991
Hop, C.E.C.A.; McMahon, T.B., Observation of a Weakly Bound Mn(CO)5+/CH4 Complex, J. Am. Chem. Soc., 1991, 113, 1, 355, https://doi.org/10.1021/ja00001a050 . [all data]

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

Holm, 1983
Holm, T., Acta Chem. Scand. B, 1983, 37, 797. [all data]

Brown, Ishikawa, et al., 1990
Brown, C.E.; Ishikawa, Y.; Hackett, P.A.; Rayner, D.M., J. Am. Chem. Soc., 1990, 112, 2530. [all data]

Notes

Go To: Top, Reaction thermochemistry data, References

• Symbols used in this document:
  

  T	Temperature
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔrS°	Entropy of reaction at standard conditions

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