Gas phase ion energetics 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 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

View reactions leading to C2H2F2+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
Proton affinity (review)688.6kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity657.9kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
10.15PIFrenking, Koch, et al., 1984LBLHLM
10.21 ± 0.02PEBieri, Niessen, et al., 1981LLK
10.15 ± 0.02PIJochims, Lohr, et al., 1979LLK
10.21PESell, Mintz, et al., 1978LLK
10.63 ± 0.02PEBieri, Niessen, et al., 1981Vertical value; LLK
10.38 ± 0.02PESell and Kuppermann, 1979Vertical value; LLK
10.39 ± 0.02PEJochims, Lohr, et al., 1979Vertical value; LLK
10.38PEBrundle, Robin, et al., 1972Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CF+14.45CH2FPIFrenking, Koch, et al., 1984LBLHLM
CF+14.5 ± 0.1?PIStadelmann and Vogt, 1980LLK
CF+14.45 ± 0.03CH2FPIJochims, Lohr, et al., 1979LLK
CHF+18.1 ± 0.2CHFPIStadelmann and Vogt, 1980LLK
CH2F+14.35CFPIFrenking, Koch, et al., 1984LBLHLM
CH2F+14.3 ± 0.1CFPIStadelmann and Vogt, 1980LLK
CH2F+14.35 ± 0.03CFPIJochims, Lohr, et al., 1979LLK
C2HF+13.70HFPIFrenking, Koch, et al., 1984LBLHLM
C2HF+13.7 ± 0.1HFPIStadelmann and Vogt, 1980LLK
C2HF+13.70 ± 0.03HFPIJochims, Lohr, et al., 1979LLK
C2HF2+15.4 ± 0.2HPIStadelmann and Vogt, 1980LLK
C2H2+18.3 ± 0.2?PIStadelmann and Vogt, 1980LLK
C2H2F+13.97FPIFrenking, Koch, et al., 1984LBLHLM
C2H2F+13.9 ± 0.1FPIStadelmann and Vogt, 1980LLK
C2H2F+13.95 ± 0.03FPIJochims, Lohr, et al., 1979LLK


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]

Frenking, Koch, et al., 1984
Frenking, G.; Koch, W.; Schaale, M.; Baumgartel, H., The unimolecular decay of difluoroethene cations. An experimental and quantum-chemical study, Int. J. Mass Spectrom. Ion Phys., 1984, 61, 305. [all data]

Bieri, Niessen, et al., 1981
Bieri, G.; Niessen, W.V.; Asbrink, L.; Svensson, A., The He(II) photoelectron spectra of the fluorosubstituted ethylenes and their analysis by the green's function method, Chem. Phys., 1981, 60, 61. [all data]

Jochims, Lohr, et al., 1979
Jochims, H.-W.; Lohr, W.; Baumgartel, H., Photoreactions of small organic molecules. VI. Photoionization processes of difluoroethylenes, Nouv. J. Chim., 1979, 3, 109. [all data]

Sell, Mintz, et al., 1978
Sell, J.A.; Mintz, D.M.; Kupperman, A., Photoelectron angular distributions of carbon-carbon «pi» electrons in ethylene, benzene, and their fluorinated derivatives, Chem. Phys. Lett., 1978, 58, 601. [all data]

Sell and Kuppermann, 1979
Sell, J.A.; Kuppermann, A., Variable angle photoelectron spectroscopy of the fluoroethylenes, J. Chem. Phys., 1979, 71, 4703. [all data]

Brundle, Robin, et al., 1972
Brundle, C.R.; Robin, M.B.; Kuebler, N.A.; Basch, H., Perfluoro effect in photoelectron spectroscopy. I. Nonaromatic molecules, J. Am. Chem. Soc., 1972, 94, 1451. [all data]

Stadelmann and Vogt, 1980
Stadelmann, J.P.; Vogt, J., A photoelectron-photoion coincidence study of cis- and trans- difluoroethene, Int. J. Mass Spectrom. Ion Phys., 1980, 35, 83. [all data]


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