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Methane, protonated


Reaction thermochemistry data

Go To: Top, Ion clustering data, 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: 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.

Individual Reactions

(CH5+ bullet Methane) + Methane = (CH5+ bullet 2Methane)

By formula: (CH5+ bullet CH4) + CH4 = (CH5+ bullet 2CH4)

Quantity Value Units Method Reference Comment
Deltar22. ± 1.kJ/molPHPMSHiraoka and Mori, 1989gas phase
Deltar25.kJ/molPHPMSHiraoka and Kebarle, 1975gas phase
Deltar6.3kJ/molHPMSField and Beggs, 1971gas phase; Entropy change is questionable
Quantity Value Units Method Reference Comment
Deltar104.J/mol*KPHPMSHiraoka and Mori, 1989gas phase
Deltar102.J/mol*KPHPMSHiraoka and Kebarle, 1975gas phase
Deltar30.J/mol*KHPMSField and Beggs, 1971gas phase; Entropy change is questionable

CH5+ + Methane = (CH5+ bullet Methane)

By formula: CH5+ + CH4 = (CH5+ bullet CH4)

Quantity Value Units Method Reference Comment
Deltar29. ± 1.kJ/molPHPMSHiraoka and Mori, 1989gas phase
Deltar31.kJ/molPHPMSHiraoka and Kebarle, 1975gas phase
Deltar17.kJ/molHPMSField and Beggs, 1971gas phase; Entropy change is questionable
Quantity Value Units Method Reference Comment
Deltar92.5J/mol*KPHPMSHiraoka and Mori, 1989gas phase
Deltar87.0J/mol*KPHPMSHiraoka and Kebarle, 1975gas phase
Deltar51.9J/mol*KHPMSField and Beggs, 1971gas phase; Entropy change is questionable

(CH5+ bullet 2Methane) + Methane = (CH5+ bullet 3Methane)

By formula: (CH5+ bullet 2CH4) + CH4 = (CH5+ bullet 3CH4)

Quantity Value Units Method Reference Comment
Deltar13.1 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Deltar17.kJ/molPHPMSHiraoka and Kebarle, 1975gas phase
Quantity Value Units Method Reference Comment
Deltar93.7J/mol*KPHPMSHiraoka and Mori, 1989gas phase
Deltar109.J/mol*KPHPMSHiraoka and Kebarle, 1975gas phase

(CH5+ bullet 3Methane) + Methane = (CH5+ bullet 4Methane)

By formula: (CH5+ bullet 3CH4) + CH4 = (CH5+ bullet 4CH4)

Quantity Value Units Method Reference Comment
Deltar12.6 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Deltar16.kJ/molPHPMSHiraoka and Kebarle, 1975gas phase
Quantity Value Units Method Reference Comment
Deltar99.2J/mol*KPHPMSHiraoka and Mori, 1989gas phase
Deltar111.J/mol*KPHPMSHiraoka and Kebarle, 1975gas phase

(CH5+ bullet 8Methane) + Methane = (CH5+ bullet 9Methane)

By formula: (CH5+ bullet 8CH4) + CH4 = (CH5+ bullet 9CH4)

Quantity Value Units Method Reference Comment
Deltar6.44kJ/molPHPMSHiraoka and Mori, 1989gas phase; Entropy change calculated or estimated
Quantity Value Units Method Reference Comment
Deltar84.J/mol*KN/AHiraoka and Mori, 1989gas phase; Entropy change calculated or estimated

(CH5+ bullet 2Hydrogen) + Hydrogen = (CH5+ bullet 3Hydrogen)

By formula: (CH5+ bullet 2H2) + H2 = (CH5+ bullet 3H2)

Quantity Value Units Method Reference Comment
Deltar6.74 ± 0.42kJ/molPHPMSHiraoka, Kudaka, et al., 1991gas phase
Quantity Value Units Method Reference Comment
Deltar94.6J/mol*KPHPMSHiraoka, Kudaka, et al., 1991gas phase

(CH5+ bullet 3Hydrogen) + Hydrogen = (CH5+ bullet 4Hydrogen)

By formula: (CH5+ bullet 3H2) + H2 = (CH5+ bullet 4H2)

Quantity Value Units Method Reference Comment
Deltar6.57 ± 0.42kJ/molPHPMSHiraoka, Kudaka, et al., 1991gas phase
Quantity Value Units Method Reference Comment
Deltar108.J/mol*KPHPMSHiraoka, Kudaka, et al., 1991gas phase

(CH5+ bullet Hydrogen) + Hydrogen = (CH5+ bullet 2Hydrogen)

By formula: (CH5+ bullet H2) + H2 = (CH5+ bullet 2H2)

Quantity Value Units Method Reference Comment
Deltar7.45 ± 0.42kJ/molPHPMSHiraoka, Kudaka, et al., 1991gas phase
Quantity Value Units Method Reference Comment
Deltar67.8J/mol*KPHPMSHiraoka, Kudaka, et al., 1991gas phase

(CH5+ bullet 4Methane) + Methane = (CH5+ bullet 5Methane)

By formula: (CH5+ bullet 4CH4) + CH4 = (CH5+ bullet 5CH4)

Quantity Value Units Method Reference Comment
Deltar11.7 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Quantity Value Units Method Reference Comment
Deltar104.J/mol*KPHPMSHiraoka and Mori, 1989gas phase

(CH5+ bullet 5Methane) + Methane = (CH5+ bullet 6Methane)

By formula: (CH5+ bullet 5CH4) + CH4 = (CH5+ bullet 6CH4)

Quantity Value Units Method Reference Comment
Deltar11.3 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Quantity Value Units Method Reference Comment
Deltar106.J/mol*KPHPMSHiraoka and Mori, 1989gas phase

(CH5+ bullet 6Methane) + Methane = (CH5+ bullet 7Methane)

By formula: (CH5+ bullet 6CH4) + CH4 = (CH5+ bullet 7CH4)

Quantity Value Units Method Reference Comment
Deltar11.2 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Quantity Value Units Method Reference Comment
Deltar111.J/mol*KPHPMSHiraoka and Mori, 1989gas phase

(CH5+ bullet 7Methane) + Methane = (CH5+ bullet 8Methane)

By formula: (CH5+ bullet 7CH4) + CH4 = (CH5+ bullet 8CH4)

Quantity Value Units Method Reference Comment
Deltar8.5 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Quantity Value Units Method Reference Comment
Deltar90.4J/mol*KPHPMSHiraoka and Mori, 1989gas phase

CH5+ + Hydrogen = (CH5+ bullet Hydrogen)

By formula: CH5+ + H2 = (CH5+ bullet H2)

Quantity Value Units Method Reference Comment
Deltar7.87 ± 0.42kJ/molPHPMSHiraoka, Kudaka, et al., 1991gas phase
Quantity Value Units Method Reference Comment
Deltar50.6J/mol*KPHPMSHiraoka, Kudaka, et al., 1991gas phase

CH5+ + Nitrogen = (CH5+ bullet Nitrogen)

By formula: CH5+ + N2 = (CH5+ bullet N2)

Quantity Value Units Method Reference Comment
Deltar28.kJ/molHPMSSpeller, 1983gas phase
Quantity Value Units Method Reference Comment
Deltar82.4J/mol*KHPMSSpeller, 1983gas phase

Ion clustering data

Go To: Top, Reaction thermochemistry data, 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: 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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.

Clustering reactions

CH5+ + Methane = (CH5+ bullet Methane)

By formula: CH5+ + CH4 = (CH5+ bullet CH4)

Quantity Value Units Method Reference Comment
Deltar29. ± 1.kJ/molPHPMSHiraoka and Mori, 1989gas phase
Deltar31.kJ/molPHPMSHiraoka and Kebarle, 1975gas phase
Deltar17.kJ/molHPMSField and Beggs, 1971gas phase; Entropy change is questionable
Quantity Value Units Method Reference Comment
Deltar92.5J/mol*KPHPMSHiraoka and Mori, 1989gas phase
Deltar87.0J/mol*KPHPMSHiraoka and Kebarle, 1975gas phase
Deltar51.9J/mol*KHPMSField and Beggs, 1971gas phase; Entropy change is questionable

(CH5+ bullet Methane) + Methane = (CH5+ bullet 2Methane)

By formula: (CH5+ bullet CH4) + CH4 = (CH5+ bullet 2CH4)

Quantity Value Units Method Reference Comment
Deltar22. ± 1.kJ/molPHPMSHiraoka and Mori, 1989gas phase
Deltar25.kJ/molPHPMSHiraoka and Kebarle, 1975gas phase
Deltar6.3kJ/molHPMSField and Beggs, 1971gas phase; Entropy change is questionable
Quantity Value Units Method Reference Comment
Deltar104.J/mol*KPHPMSHiraoka and Mori, 1989gas phase
Deltar102.J/mol*KPHPMSHiraoka and Kebarle, 1975gas phase
Deltar30.J/mol*KHPMSField and Beggs, 1971gas phase; Entropy change is questionable

(CH5+ bullet 2Methane) + Methane = (CH5+ bullet 3Methane)

By formula: (CH5+ bullet 2CH4) + CH4 = (CH5+ bullet 3CH4)

Quantity Value Units Method Reference Comment
Deltar13.1 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Deltar17.kJ/molPHPMSHiraoka and Kebarle, 1975gas phase
Quantity Value Units Method Reference Comment
Deltar93.7J/mol*KPHPMSHiraoka and Mori, 1989gas phase
Deltar109.J/mol*KPHPMSHiraoka and Kebarle, 1975gas phase

(CH5+ bullet 3Methane) + Methane = (CH5+ bullet 4Methane)

By formula: (CH5+ bullet 3CH4) + CH4 = (CH5+ bullet 4CH4)

Quantity Value Units Method Reference Comment
Deltar12.6 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Deltar16.kJ/molPHPMSHiraoka and Kebarle, 1975gas phase
Quantity Value Units Method Reference Comment
Deltar99.2J/mol*KPHPMSHiraoka and Mori, 1989gas phase
Deltar111.J/mol*KPHPMSHiraoka and Kebarle, 1975gas phase

(CH5+ bullet 4Methane) + Methane = (CH5+ bullet 5Methane)

By formula: (CH5+ bullet 4CH4) + CH4 = (CH5+ bullet 5CH4)

Quantity Value Units Method Reference Comment
Deltar11.7 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Quantity Value Units Method Reference Comment
Deltar104.J/mol*KPHPMSHiraoka and Mori, 1989gas phase

(CH5+ bullet 5Methane) + Methane = (CH5+ bullet 6Methane)

By formula: (CH5+ bullet 5CH4) + CH4 = (CH5+ bullet 6CH4)

Quantity Value Units Method Reference Comment
Deltar11.3 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Quantity Value Units Method Reference Comment
Deltar106.J/mol*KPHPMSHiraoka and Mori, 1989gas phase

(CH5+ bullet 6Methane) + Methane = (CH5+ bullet 7Methane)

By formula: (CH5+ bullet 6CH4) + CH4 = (CH5+ bullet 7CH4)

Quantity Value Units Method Reference Comment
Deltar11.2 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Quantity Value Units Method Reference Comment
Deltar111.J/mol*KPHPMSHiraoka and Mori, 1989gas phase

(CH5+ bullet 7Methane) + Methane = (CH5+ bullet 8Methane)

By formula: (CH5+ bullet 7CH4) + CH4 = (CH5+ bullet 8CH4)

Quantity Value Units Method Reference Comment
Deltar8.5 ± 0.8kJ/molPHPMSHiraoka and Mori, 1989gas phase
Quantity Value Units Method Reference Comment
Deltar90.4J/mol*KPHPMSHiraoka and Mori, 1989gas phase

(CH5+ bullet 8Methane) + Methane = (CH5+ bullet 9Methane)

By formula: (CH5+ bullet 8CH4) + CH4 = (CH5+ bullet 9CH4)

Quantity Value Units Method Reference Comment
Deltar6.44kJ/molPHPMSHiraoka and Mori, 1989gas phase; Entropy change calculated or estimated
Quantity Value Units Method Reference Comment
Deltar84.J/mol*KN/AHiraoka and Mori, 1989gas phase; Entropy change calculated or estimated

CH5+ + Hydrogen = (CH5+ bullet Hydrogen)

By formula: CH5+ + H2 = (CH5+ bullet H2)

Quantity Value Units Method Reference Comment
Deltar7.87 ± 0.42kJ/molPHPMSHiraoka, Kudaka, et al., 1991gas phase
Quantity Value Units Method Reference Comment
Deltar50.6J/mol*KPHPMSHiraoka, Kudaka, et al., 1991gas phase

(CH5+ bullet Hydrogen) + Hydrogen = (CH5+ bullet 2Hydrogen)

By formula: (CH5+ bullet H2) + H2 = (CH5+ bullet 2H2)

Quantity Value Units Method Reference Comment
Deltar7.45 ± 0.42kJ/molPHPMSHiraoka, Kudaka, et al., 1991gas phase
Quantity Value Units Method Reference Comment
Deltar67.8J/mol*KPHPMSHiraoka, Kudaka, et al., 1991gas phase

(CH5+ bullet 2Hydrogen) + Hydrogen = (CH5+ bullet 3Hydrogen)

By formula: (CH5+ bullet 2H2) + H2 = (CH5+ bullet 3H2)

Quantity Value Units Method Reference Comment
Deltar6.74 ± 0.42kJ/molPHPMSHiraoka, Kudaka, et al., 1991gas phase
Quantity Value Units Method Reference Comment
Deltar94.6J/mol*KPHPMSHiraoka, Kudaka, et al., 1991gas phase

(CH5+ bullet 3Hydrogen) + Hydrogen = (CH5+ bullet 4Hydrogen)

By formula: (CH5+ bullet 3H2) + H2 = (CH5+ bullet 4H2)

Quantity Value Units Method Reference Comment
Deltar6.57 ± 0.42kJ/molPHPMSHiraoka, Kudaka, et al., 1991gas phase
Quantity Value Units Method Reference Comment
Deltar108.J/mol*KPHPMSHiraoka, Kudaka, et al., 1991gas phase

CH5+ + Nitrogen = (CH5+ bullet Nitrogen)

By formula: CH5+ + N2 = (CH5+ bullet N2)

Quantity Value Units Method Reference Comment
Deltar28.kJ/molHPMSSpeller, 1983gas phase
Quantity Value Units Method Reference Comment
Deltar82.4J/mol*KHPMSSpeller, 1983gas phase

References

Go To: Top, Reaction thermochemistry data, Ion clustering data, Notes

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

Hiraoka and Mori, 1989
Hiraoka, K.; Mori, T., Gas - Phase Stability and Structure of Cluster Ions CH5+(CH4)n with n = 1 - 9, Chem. Phys. Lett., 1989, 161, 2, 111, https://doi.org/10.1016/0009-2614(89)85040-7 . [all data]

Hiraoka and Kebarle, 1975
Hiraoka, K.; Kebarle, P., Energetics, Stabilities and Possible Structures of CH5+(CH4)n Clusters from Gas Phase Study of Equilibria CH5+(CH4)n - 1 + CH4 = CH5+(CH4)n for n = 1 - 5, J. Am. Chem. Soc., 1975, 97, 15, 4179, https://doi.org/10.1021/ja00848a005 . [all data]

Field and Beggs, 1971
Field, F.H.; Beggs, D.P., Reversible Reactions of Gas Phase Ions. III. Studies with Methane at 0.1-1.0 Torr and 77-300 K, J. Am. Chem. Soc., 1971, 93, 7, 1585, https://doi.org/10.1021/ja00736a003 . [all data]

Hiraoka, Kudaka, et al., 1991
Hiraoka, K.; Kudaka, I.; Yamabe, S., Gas-Phase Solvation of CH5+ with H2, Chem. Phys. Lett., 1991, 184, 4, 271, https://doi.org/10.1016/0009-2614(91)85122-D . [all data]

Speller, 1983
Speller, C.V., Ph. D. Thesis, Universite de Paris Sud, 1983. [all data]


Notes

Go To: Top, Reaction thermochemistry data, Ion clustering data, References