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Ethene, 1,1-difluoro-

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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
L - 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 C2H2F2+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)10.29 ± 0.01eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)734.kJ/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity705.1kJ/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
10.29PIFrenking, Koch, et al., 1984LBLHLM
10.29 ± 0.02PEBieri, Niessen, et al., 1981LLK
10.29PESell, Mintz, et al., 1978LLK
10.29 ± 0.01PIReinke, Kraessig, et al., 1973LLK
10.31PELake and Thompson, 1970RDSH
10.31 ± 0.02PIMomigny, 1963RDSH
10.30PIBralsford, Harris, et al., 1960RDSH
10.70 ± 0.02PEBieri, Niessen, et al., 1981Vertical value; LLK
10.69 ± 0.02PESell and Kuppermann, 1979Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CF+14.92CH2FPIFrenking, Koch, et al., 1984LBLHLM
CF+14.92 ± 0.02CH2FPIReinke, Kraessig, et al., 1973LLK
CF+15.23?EILifshitz and Long, 1963RDSH
CH2+16.99 ± 0.02CF2PIReinke, Kraessig, et al., 1973LLK
CH2+17.2 ± 0.1CF2EISyrvatka, Bel'ferman, et al., 1971LLK
CH2+17.8CF2EILifshitz and Long, 1963RDSH
CH2F+14.84CFPIFrenking, Koch, et al., 1984LBLHLM
CH2F+14.84 ± 0.02CFPIReinke, Kraessig, et al., 1973LLK
CH2F+15.08CFEILifshitz and Long, 1963RDSH
C2HF+14.18HFPIFrenking, Koch, et al., 1984LBLHLM
C2HF+14.18 ± 0.03HFPIReinke, Kraessig, et al., 1973LLK
C2HF+14.44HFEILifshitz and Long, 1963RDSH
C2HF2+15.80 ± 0.04HPIReinke, Kraessig, et al., 1973LLK
C2HF2+16.67HEILifshitz and Long, 1963RDSH
C2H2+19.08 ± 0.032FPIReinke, Kraessig, et al., 1973LLK
C2H2+19.8 ± 0.1?EILifshitz and Long, 1963RDSH
C2H2F+14.37FPIFrenking, Koch, et al., 1984LBLHLM
C2H2F+14.37 ± 0.02FPIReinke, Kraessig, et al., 1973LLK
C2H2F+14.80FEILifshitz and Long, 1963RDSH


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]

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]

Reinke, Kraessig, et al., 1973
Reinke, D.; Kraessig, R.; Baumgartel, H., Photoreactions of small organic molecules, Z. Naturforsch. A:, 1973, 28, 1021. [all data]

Lake and Thompson, 1970
Lake, R.F.; Thompson, H., Photoelectron spectra of halogenated ethylenes, Proc. Roy. Soc. (London), 1970, A315, 323. [all data]

Momigny, 1963
Momigny, J., Ionization potentials and the structures of the photo-ionization yield curves of ethylene and its halogeno derivatives, Nature, 1963, 199, 1179. [all data]

Bralsford, Harris, et al., 1960
Bralsford, R.; Harris, P.V.; Price, W.C., The effect of fluorine on the electronic spectra and ionization potentials of molecules, Proc. Roy. Soc. (London), 1960, A258, 459. [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]

Lifshitz and Long, 1963
Lifshitz, C.; Long, F.A., Appearance potentials and mass spectra of fluorinated ethylenes. I. Decomposition mechanisms and their energetics, J. Phys. Chem., 1963, 67, 2463. [all data]

Syrvatka, Bel'ferman, et al., 1971
Syrvatka, B.G.; Bel'ferman, A.L.; Gil'burd, M.M.; Moin, F.B., Determination of the dissociation energy of the double bond in some fluorochloro-substituted ethylenes and their ions by electron bombardment, J. Org. Chem. USSR, 1971, 7, 8, In original 9. [all data]


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