Benzene, hexafluoro-
- Formula: C6F6
- Molecular weight: 186.0546
- IUPAC Standard InChIKey: ZQBFAOFFOQMSGJ-UHFFFAOYSA-N
- CAS Registry Number: 392-56-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: CP 28; Hexafluorobenzene; Perfluorobenzene; 1,2,3,4,5,6-Hexafluorobenzene
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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
L - Sharon G. Lias
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
B - John E. Bartmess
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 9.90 ± 0.04 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 648.0 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 624.4 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
0.530 ± 0.050 | Kine | Miller, Van Doren, et al., 2004 | B |
0.52 ± 0.11 | IMRE | Dillow and Kebarle, 1989 | ΔGea(423 K) = -14.9±1.0 kcal/mol at 423 K, assumed entropy = 3.5 eu; B |
0.70 ± 0.10 | LPES | Eustis, Wang, et al., 2007 | Vertical Detachment Energy: 1.55±0.02 eV; B |
0.477006 | Kine | Christophorou and Datkos, 1995 | B |
0.80 ± 0.10 | LPES | Nakajima, Taguwa, et al., 1993 | Vertical Detachment Energy: 1.56±0.03 eV; B |
0.83 ± 0.20 | TDAs | Chen, Wiley, et al., 1994 | Claim that Kebarle and Chowdhury, 1987 involves an excited state; B |
0.860 ± 0.030 | ECD | Wentworth, Limero, et al., 1987 | B |
1.80 ± 0.30 | Endo | Lifshitz, Tiernan, et al., 1973 | B |
1.200 ± 0.069 | SI | Page and Goode, 1969 | The Magnetron method, lacking mass analysis, is not considered reliable.; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.8 | PE | Maier and Thommen, 1981 | LLK |
9.906 | PE | Bieri, Asbrink, et al., 1981 | LLK |
9.90 ± 0.05 | PE | Bastide, Hall, et al., 1979 | LLK |
9.91 | PE | Sell, Mintz, et al., 1978 | LLK |
10.2 ± 0.1 | EI | Praet, Hubin-Franskin, et al., 1977 | LLK |
9.93 | PE | Brundle, Robin, et al., 1972 | LLK |
9.90 ± 0.01 | S | Smith and Raymonda, 1971 | LLK |
9.88 ± 0.05 | PE | Clark and Frost, 1967 | RDSH |
9.97 | PI | Bralsford, Harris, et al., 1960 | RDSH |
10.2 | PE | Bieri, Asbrink, et al., 1981 | Vertical value; LLK |
10.14 | PE | Trudell and Price, 1979 | Vertical value; LLK |
10.09 | PE | Kobayashi, 1978 | Vertical value; LLK |
10.09 | PE | Kobayashi and Nagakura, 1975 | Vertical value; LLK |
9.90 | PE | Streets and Ceasar, 1973 | Vertical value; LLK |
Appearance energy determinations
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]
Miller, Van Doren, et al., 2004
Miller, T.M.; Van Doren, J.M.; Viggiano, A.A.,
Electron attachment and detachment: C6F6,
Int. J. Mass Spectrom., 2004, 233, 1-3, 67-73, https://doi.org/10.1016/j.ijms.2003.11.014
. [all data]
Dillow and Kebarle, 1989
Dillow, G.W.; Kebarle, P.,
Substituent Effects on the Electron Affinities of Perfluorobenzenes C6F5X,
J. Am. Chem. Soc., 1989, 111, 15, 5592, https://doi.org/10.1021/ja00197a014
. [all data]
Eustis, Wang, et al., 2007
Eustis, S.N.; Wang, D.; Bowen, K.H.; Patwari, G.N.,
Photoelectron spectroscopy of hydrated hexafluorobenzene anions,
J. Chem. Phys., 2007, 127, 11, 114312, https://doi.org/10.1063/1.2768349
. [all data]
Christophorou and Datkos, 1995
Christophorou, L.G.; Datkos, P.G.,
Effect of Temperature on the Formation and Autodestruction of Parent Anions,
Int. J. Mass Spectrom. Ion Proc., 1995, 149/150, 59, https://doi.org/10.1016/0168-1176(95)04229-E
. [all data]
Nakajima, Taguwa, et al., 1993
Nakajima, A.; Taguwa, T.; Hoshino, K.; Sugioka, T.; Naganuma, T.; Ono, F.; Watanabe, K.; Nakao, K.,
Photoelectron Spectroscopy of (C6F6)n- and (Au-C6F6)- Clusters,
Chem. Phys. Lett., 1993, 214, 1, 22, https://doi.org/10.1016/0009-2614(93)85449-X
. [all data]
Chen, Wiley, et al., 1994
Chen, E.C.M.; Wiley, J.R.; Batten, C.F.; Wentworth, W.E.,
Determination of the Electron Affinities of Molecules Using Negative Ion Mass Spectrometry,
J. Phys. Chem., 1994, 98, 1, 88, https://doi.org/10.1021/j100052a016
. [all data]
Kebarle and Chowdhury, 1987
Kebarle, P.; Chowdhury, S.,
Electron affinities and electron transfer reactions,
Chem. Rev., 1987, 87, 513. [all data]
Wentworth, Limero, et al., 1987
Wentworth, W.E.; Limero, T.; Chen, E.C.M.,
Electron Affinities of Hexafluorobenzene and Pentafluorobenzene,
J. Phys. Chem., 1987, 91, 1, 241, https://doi.org/10.1021/j100285a051
. [all data]
Lifshitz, Tiernan, et al., 1973
Lifshitz, C.; Tiernan, T.O.; Hughes, B.M.,
Electron affinities from endothermic negative-ion charge transfer reactions. IV. SF6, selected fluorocarbons, and other polyatomic molecules,
J. Chem. Phys., 1973, 59, 3182. [all data]
Page and Goode, 1969
Page, F.M.; Goode, G.C.,
Negative Ions and the Magnetron., Wiley, NY, 1969. [all data]
Maier and Thommen, 1981
Maier, J.P.; Thommen, F.,
Fluorescence quantum yields and lifetimes of fluorobenzene cations in selected levels of their B and C states determined by photoelectron-photoion coincidence spectroscopy,
Chem. Phys., 1981, 57, 319. [all data]
Bieri, Asbrink, et al., 1981
Bieri, G.; Asbrink, L.; Von Niessen, W.,
30.4 nm He(II) photoelectron spectra of organic molecules. Part IV. Fluoro-compounds (C,H,F),
J. Electron Spectrosc. Relat. Phenom., 1981, 23, 281. [all data]
Bastide, Hall, et al., 1979
Bastide, J.; Hall, D.; Heilbronner, E.; Maier, J.P.,
He(Iα) photoelectron spectra of some higher aromatic perfluoro compounds,
J. Electron Spectrosc. Relat. Phenom., 1979, 16, 205. [all data]
Sell, Mintz, et al., 1978
Sell, J.A.; Mintz, D.M.; Kupperman, A.,
Photoelectron angular distributions of carbon-carbon π electrons in ethylene, benzene, and their fluorinated derivatives,
Chem. Phys. Lett., 1978, 58, 601. [all data]
Praet, Hubin-Franskin, et al., 1977
Praet, M-Th.; Hubin-Franskin, M.J.; Delwiche, J.P.; Schoos, R.,
Ionization and dissociation of C6F6 isomers under electron impact,
Org. Mass Spectrom., 1977, 12, 297. [all data]
Brundle, Robin, et al., 1972
Brundle, C.R.; Robin, M.B.; Kuebler, N.A.,
Perfluoro effect in photoelectron spectroscopy. II. Aromatic molecules,
J. Am. Chem. Soc., 1972, 94, 1466. [all data]
Smith and Raymonda, 1971
Smith, D.R.; Raymonda, J.W.,
Rydberg states in fluorinated benzenes; hexa-, penta-, and mono- fluorobenzene,
Chem. Phys. Lett., 1971, 12, 269. [all data]
Clark and Frost, 1967
Clark, I.D.; Frost, D.C.,
A study of the energy levels in benzene and some fluorobenzenes by photoelectron spectroscopy,
J. Am. Chem. Soc., 1967, 89, 244. [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]
Trudell and Price, 1979
Trudell, B.C.; Price, S.J.W.,
The ultraviolet photoelectron spectra of C6F5X compounds, X=(F, Cl, Br, I, H, CH3),
Can. J. Chem., 1979, 57, 2256. [all data]
Kobayashi, 1978
Kobayashi, T.,
A simple general tendency in photoelectron angular distributions of some monosubstituted benzenes,
Phys. Lett., 1978, 69, 105. [all data]
Kobayashi and Nagakura, 1975
Kobayashi, T.; Nagakura, S.,
Angular distribution for the photoelectron spectra of benzene and hexafluorobenzene,
J. Electron Spectrosc. Relat. Phenom., 1975, 7, 187. [all data]
Streets and Ceasar, 1973
Streets, D.G.; Ceasar, G.P.,
Inductive mesomeric effects on the π orbitals of halobenzenes,
Mol. Phys., 1973, 26, 1037. [all data]
Dibeler, Reese, et al., 1957
Dibeler, V.H.; Reese, R.M.; Mohler, F.L.,
Ionization and dissociation of hexafluorobenzene by electron impact,
J. Chem. Phys., 1957, 26, 304. [all data]
Adams, Smith, et al., 1985
Adams, N.G.; Smith, D.; Alge, E.,
Anomalous temperature dependence of the coefficient of electron attachment to hexafluorobenzene,
Chem. Phys. Lett., 1985, 116, 460. [all data]
Price and Sapiano, 1974
Price, S.J.W.; Sapiano, H.J.,
C6F5X bond dissociation energies: determination from appearance potential measurements and correlation with thermochemical data,
Can. J. Chem., 1974, 52, 4109. [all data]
Majer and Patrick, 1962
Majer, J.R.; Patrick, C.R.,
Electron impact on some halogenated aromatic compounds,
J. Chem. Soc. Faraday Trans., 1962, 58, 17. [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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