Fluoromethylene
- Formula: CHF
- Molecular weight: 32.0170
- IUPAC Standard InChIKey: YUCFVHQCAFKDQG-UHFFFAOYSA-N
- CAS Registry Number: 13453-52-6
- Chemical structure:
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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 ± 0.05 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 190.7 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 182.6 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.5420 ± 0.0050 | LPES | Gilles, Ervin, et al., 1992 | Triplet state of neutral: 14.9±0.4 kcal/mol higher than singlet; B |
0.5570 ± 0.0050 | LPES | Murray, Leopold, et al., 1988 | Singlet-triplet splitting in neutral 11.4±0.3 kcal/mol; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.06 ± 0.05 | LS | Irikura, Hudgens, et al., 1995 | LL |
10.4 | EI | Goto, Nakamura, et al., 1994 | LL |
10.49 | DER | Lias, Karpas, et al., 1985 | LBLHLM |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CF+ | 16.6 | H | EI | Goto, Nakamura, et al., 1994 | LL |
CH+ | 24.2 | F | EI | Goto, Nakamura, et al., 1994 | LL |
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]
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]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy EA Electron affinity IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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