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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:
LL - Sharon G. Lias and Joel F. Liebman
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
B - John E. Bartmess

View reactions leading to CHF+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)10.06 ± 0.05eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)190.7kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity182.6kcal/molN/AHunter and Lias, 1998HL

Electron affinity determinations

EA (eV) Method Reference Comment
0.5420 ± 0.0050LPESGilles, Ervin, et al., 1992Triplet state of neutral: 14.9±0.4 kcal/mol higher than singlet; B
0.5570 ± 0.0050LPESMurray, Leopold, et al., 1988Singlet-triplet splitting in neutral 11.4±0.3 kcal/mol; B

Ionization energy determinations

IE (eV) Method Reference Comment
10.06 ± 0.05LSIrikura, Hudgens, et al., 1995LL
10.4EIGoto, Nakamura, et al., 1994LL
10.49DERLias, Karpas, et al., 1985LBLHLM

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CF+16.6HEIGoto, Nakamura, et al., 1994LL
CH+24.2FEIGoto, Nakamura, et al., 1994LL


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]

Gilles, Ervin, et al., 1992
Gilles, M.K.; Ervin, K.M.; Ho, J.; Lineberger, W.C., Negative Ion Photoelectron Spectroscopy of HCF-, HCCl-, HCBr-, and HCI- - Photoelectron Angular Distributions and Neutral Triplet Excitation, J. Phys. Chem., 1992, 96, 3, 1130, https://doi.org/10.1021/j100182a021 . [all data]

Murray, Leopold, et al., 1988
Murray, K.K.; Leopold, D.G.; Miller, T.M.; Lineberger, W.C., Photoelectron Spectroscopy of the Halocarbene Anions HCF-, HCCl-, HCBr-, HCI-, CF2-, and CCl2-, J. Chem. Phys., 1988, 89, 9, 5442, https://doi.org/10.1063/1.455596 . [all data]

Irikura, Hudgens, et al., 1995
Irikura, K.K.; Hudgens, J.W.; Johnson, R.D., III, Spectroscopy of the fluoromethylene radicals HCF and DCF by 2+1 resonance enhanced multiphoton ionization spectroscopy and by ab initio calculation, J. Chem. Phys., 1995, 103, 1303. [all data]

Goto, Nakamura, et al., 1994
Goto, M.; Nakamura, K.; Toyoda, H.; Sugai, H., Cross section measurements for electron-impact dissociation of CHF3 into neutral and ionic fragments, Jpn. J. Appl. Phys. Part 1, 1994, 33, 3602. [all data]

Lias, Karpas, et al., 1985
Lias, S.G.; Karpas, Z.; Liebman, J.F., Halomethylenes: Effects of halogen substitution on absolute heats of formation, J. Am. Chem. Soc., 1985, 107, 6089. [all data]


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