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L-Methionine

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Gas phase ion energetics 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 evaluated as indicated in comments:
HL - E.P. Hunter and S.G. Lias

Data compiled as indicated in comments:
LBLHLM - S.G. Lias, J.E. Bartmess, J.F. Liebman, J.L. Holmes, R.D. Levin, and W.G. Mallard
RDSH - H.M. Rosenstock, K. Draxl, B.W. Steiner, and J.T. Herron

Quantity Value Units Method Reference Comment
Proton affinity (review)935.4kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity901.5kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
8.3PECannington and Ham, 1983LBLHLM
8.63 ± 0.10EISvec and Junk, 1967RDSH
~9.PIAkopyan and Loginov, 1967RDSH
8.65PECannington and Ham, 1983Vertical value; LBLHLM

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH3S+13.0 ± 0.2?EISvec and Junk, 1967RDSH
C2H5S+12.43 ± 0.10?EISvec and Junk, 1967RDSH
C4H10NS+9.68 ± 0.15?EISvec and Junk, 1967RDSH

References

Go To: Top, Gas phase ion energetics data, Notes

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

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Cannington and Ham, 1983
Cannington, P.H.; Ham, N.S., He(I) and He(II) photoelectron spectra of glycine and related molecules, J. Electron Spectrosc. Relat. Phenom., 1983, 32, 139. [all data]

Svec and Junk, 1967
Svec, H.J.; Junk, G.A., Electron-impact studies of substituted alkanes, J. Am. Chem. Soc., 1967, 89, 790. [all data]

Akopyan and Loginov, 1967
Akopyan, M.E.; Loginov, Yy.V., Mass-spectrometric study of the phoionization of free «alpha»-aminoacids, High Energy Chem., 1967, 1, 83, In original 97. [all data]


Notes

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