Methyl fluoride

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Reaction thermochemistry data

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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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
MS - José A. Martinho Simões
RCD - Robert C. Dunbar

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Individual Reactions

Chlorine anion + Methyl fluoride = (Chlorine anion • Methyl fluoride)

By formula: Cl- + CH3F = (Cl- • CH3F)

Quantity Value Units Method Reference Comment
Δr48.1 ± 8.4kJ/molIMRELarson and McMahon, 1984gas phase; B,M
Quantity Value Units Method Reference Comment
Δr84.9J/mol*KN/ALarson and McMahon, 1984gas phase; switching reaction(Cl-)CH3Cl, Entropy change calculated or estimated; Larson and McMahon, 1984, 2; M
Quantity Value Units Method Reference Comment
Δr23.kJ/molICRLarson and McMahon, 1984gas phase; switching reaction(Cl-)CH3Cl, Entropy change calculated or estimated; Larson and McMahon, 1984, 2; M

CH2F- + Hydrogen cation = Methyl fluoride

By formula: CH2F- + H+ = CH3F

Quantity Value Units Method Reference Comment
Δr1756. ± 19.kJ/molEIAERogers, Simpson, et al., 2010gas phase; B
Δr1711. ± 17.kJ/molCIDTGraul and Squires, 1990gas phase; B
Quantity Value Units Method Reference Comment
Δr1676. ± 17.kJ/molH-TSGraul and Squires, 1990gas phase; B

HO2S+ + Methyl fluoride = (HO2S+ • Methyl fluoride)

By formula: HO2S+ + CH3F = (HO2S+ • CH3F)

Quantity Value Units Method Reference Comment
Δr106.kJ/molPHPMSMcMahon and Kebarle, 1986gas phase; switching reaction(SO2H+)SO2; M
Quantity Value Units Method Reference Comment
Δr119.J/mol*KPHPMSMcMahon and Kebarle, 1986gas phase; switching reaction(SO2H+)SO2; M

Methyl cation + Methyl fluoride = (Methyl cation • Methyl fluoride)

By formula: CH3+ + CH3F = (CH3+ • CH3F)

Quantity Value Units Method Reference Comment
Δr230.kJ/molPHPMSMcMahon, Heinis, et al., 1988gas phase; switching reaction(CH3+)N2, Entropy change calculated or estimated, uses MCA(N2) = 202. kJ/mol; Foster, Williamson, et al., 1974; M

Lithium ion (1+) + Methyl fluoride = (Lithium ion (1+) • Methyl fluoride)

By formula: Li+ + CH3F = (Li+ • CH3F)

Quantity Value Units Method Reference Comment
Δr130.kJ/molICRStaley and Beauchamp, 1975gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 interpolated; M

CH6N+ + Methyl fluoride = (CH6N+ • Methyl fluoride)

By formula: CH6N+ + CH3F = (CH6N+ • CH3F)

Quantity Value Units Method Reference Comment
Δr49.4kJ/molPHPMSMeot-Ner, 1984gas phase; M
Quantity Value Units Method Reference Comment
Δr97.5J/mol*KPHPMSMeot-Ner, 1984gas phase; M

CH4F+ + Methyl fluoride = (CH4F+ • Methyl fluoride)

By formula: CH4F+ + CH3F = (CH4F+ • CH3F)

Quantity Value Units Method Reference Comment
Δr130. ± 8.kJ/molPHPMSMcMahon and Kebarle, 1986gas phase; switching reaction(SO2H+)SO2; Lias, Liebman, et al., 1984; M

C5O5W (g) + Methyl fluoride (g) = C6H3FO5W (g)

By formula: C5O5W (g) + CH3F (g) = C6H3FO5W (g)

Quantity Value Units Method Reference Comment
Δr-47. ± 13.kJ/molEqGBrown, Ishikawa, et al., 1990Temperature range: ca. 300-350 K; MS

Aluminum ion (1+) + Methyl fluoride = (Aluminum ion (1+) • Methyl fluoride)

By formula: Al+ + CH3F = (Al+ • CH3F)

Quantity Value Units Method Reference Comment
Δr90.0 ± 8.4kJ/molEqGBouchard, Brenner, et al., 1997RCD

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.

Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B., Hydrogen bonding in gas phase anions. An experimental investigation of the interaction between chloride ion and bronsted acids from ICR chloride exchange equilibria, J. Am. Chem. Soc., 1984, 106, 517. [all data]

Larson and McMahon, 1984, 2
Larson, J.W.; McMahon, T.B., Gas phase negative ion chemistry of alkylchloroformates, Can. J. Chem., 1984, 62, 675. [all data]

Rogers, Simpson, et al., 2010
Rogers, N.J.; Simpson, M.J.; Tuckett, R.P.; Dunn, K.F.; Latimer, C.J., Vacuum-UV negative photoion spectroscopy of CH3F, CH3Cl and CH3Br, Phys. Chem. Chem. Phys., 2010, 12, 36, 10971-10980, https://doi.org/10.1039/c0cp00234h . [all data]

Graul and Squires, 1990
Graul, S.T.; Squires, R.R., Gas-Phase Acidities Derived from Threshold Energies for Activated Reactions, J. Am. Chem. Soc., 1990, 112, 7, 2517, https://doi.org/10.1021/ja00163a007 . [all data]

McMahon and Kebarle, 1986
McMahon, T.B.; Kebarle, P., Strong hydrogen bonding in gas-phase ions: A high pressure mass spectrometric study of formation and energetics of methyl fluoride proton bound dimer, J. Am. Chem. Soc., 1986, 108, 6502. [all data]

McMahon, Heinis, et al., 1988
McMahon, T.; Heinis, T.; Nicol, G.; Hovey, J.K.; Kebarle, P., Methyl Cation Affinities, J. Am. Chem. Soc., 1988, 110, 23, 7591, https://doi.org/10.1021/ja00231a002 . [all data]

Foster, Williamson, et al., 1974
Foster, M.S.; Williamson, A.D.; Beauchamp, J.L., Photoionization mass spectrometry of trans-azomethane, Int. J. Mass Spectrom. Ion Phys., 1974, 15, 429. [all data]

Staley and Beauchamp, 1975
Staley, R.H.; Beauchamp, J.L., Intrinsic Acid - Base Properties of Molecules. Binding Energies of Li+ to pi - and n - Donor Bases, J. Am. Chem. Soc., 1975, 97, 20, 5920, https://doi.org/10.1021/ja00853a050 . [all data]

Dzidic and Kebarle, 1970
Dzidic, I.; Kebarle, P., Hydration of the Alkali Ions in the Gas Phase. Enthalpies and Entropies of Reactions M+(H2O)n-1 + H2O = M+(H2O)n, J. Phys. Chem., 1970, 74, 7, 1466, https://doi.org/10.1021/j100702a013 . [all data]

Meot-Ner, 1984
Meot-Ner, (Mautner)M., The Ionic Hydrogen Bond and Ion Solvation. 1. -NH+ O-, -NH+ N- and -OH+ O- Bonds. Correlations with Proton Affinity. Deviations Due to Structural Effects, J. Am. Chem. Soc., 1984, 106, 5, 1257, https://doi.org/10.1021/ja00317a015 . [all data]

Lias, Liebman, et al., 1984
Lias, S.G.; Liebman, J.F.; Levin, R.D., Evaluated gas phase basicities and proton affinities of molecules heats of formation of protonated molecules, J. Phys. Chem. Ref. Data, 1984, 13, 695. [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]

Bouchard, Brenner, et al., 1997
Bouchard, F.; Brenner, V.; Carra, C.; Hepburn, J.W.; Koyanagi, G.K.; McMahon, T.B.; Ohanessian, G.; Peschke, M., Energetics and Structure of Complexes of Al+ with Small Organic Molecules in the Gas Phase, J. Phys. Chem. A, 1997, 101, 33, 5885, https://doi.org/10.1021/jp9703465 . [all data]


Notes

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