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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 - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to C2H5N+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
Proton affinity (review)905.5kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity872.5kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
9.2 ± 0.1PEAue, Webb, et al., 1980LLK
9.3PEAue and Bowers, 1979LLK
9.52PEBodor, Dewar, et al., 1970RDSH
9.8EIKiser and Gallegos, 1962RDSH
9.94 ± 0.15EIGallegos and Kiser, 1961RDSH
9.85PEBieri, Asbrink, et al., 1982Vertical value; LBLHLM
9.85 ± 0.02PEYoshikawa, Hashimoto, et al., 1974Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH3+15.5 ± 0.3?EIGallegos and Kiser, 1961RDSH
C2HN+18.1 ± 0.6?EIGallegos and Kiser, 1961RDSH
C2H2+16.4 ± 0.4?EIGallegos and Kiser, 1961RDSH
C2H2N+17.0 ± 0.2?EIGallegos and Kiser, 1961RDSH
C2H3+16.9 ± 0.3?EIGallegos and Kiser, 1961RDSH
C2H3N+15.2 ± 0.3?EIGallegos and Kiser, 1961RDSH
C2H4+13.3 ± 0.2NHEIGallegos and Kiser, 1961RDSH
C2H4N+12.2 ± 0.1HEIGallegos and Kiser, 1961RDSH
C2N+23.0 ± 0.4H2+3H?EIGallegos and Kiser, 1961RDSH


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, . [all data]

Aue, Webb, et al., 1980
Aue, D.H.; Webb, H.M.; Davidson, W.R.; Vidal, M.; Bowers, M.T.; Goldwhite, H.; Vertal, L.E.; Douglas, J.E.; Kollman, P.A.; Kenyon, G.L., Proton affinities photoelectron spectra of three-membered-ring J. Heterocycl. Chem., J. Am. Chem. Soc., 1980, 102, 5151. [all data]

Aue and Bowers, 1979
Aue, D.H.; Bowers, M.T., Chapter 9. Stabilities of positive ions from equilibrium gas phase basicity measurements in Ions Chemistry,, ed. M.T. Bowers, 1979. [all data]

Bodor, Dewar, et al., 1970
Bodor, N.; Dewar, M.J.S.; Jennings, W.B.; Worley, S.D., Photoelectron spectra of molecules-IV.Ionization potentials and heats of formation of some hydrazines and amines, Tetrahedron, 1970, 26, 4109. [all data]

Kiser and Gallegos, 1962
Kiser, R.W.; Gallegos, E.J., A technique for the rapid determination of ionization and appearance potentials, J. Phys. Chem., 1962, 66, 947. [all data]

Gallegos and Kiser, 1961
Gallegos, E.; Kiser, R.W., Electron impact spectroscopy of ethylene sulfide and ethylenimine, J. Phys. Chem., 1961, 65, 1177. [all data]

Bieri, Asbrink, et al., 1982
Bieri, G.; Asbrink, L.; Von Niessen, W., 30.4-nm He(II) photoelectron spectra of organic molecules, J. Electron Spectrosc. Relat. Phenom., 1982, 27, 129. [all data]

Yoshikawa, Hashimoto, et al., 1974
Yoshikawa, K.; Hashimoto, M.; Morishima, I., Photoelectron spectroscopic study of cyclic amines. The relation between ionization potentials, basicities, and s character of the nitrogen lone pair electrons, J. Am. Chem. Soc., 1974, 96, 288. [all data]


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