Benzonitrile, pentafluoro-
- Formula: C7F5N
- Molecular weight: 193.0736
- IUPAC Standard InChIKey: YXWJGZQOGXGSSC-UHFFFAOYSA-N
- CAS Registry Number: 773-82-0
- 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: Pentafluorobenzonitrile; Perfluorobenzonitrile; 2,3,4,5,6-Pentafluorobenzonitrile; Pentafluorocyanobenzene; Cyanopentafluorobenzene
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
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Individual Reactions
By formula: F- + C7F5N = (F- • C7F5N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39.3 ± 2.0 | kcal/mol | IMRE | Dillow and Kebarle, 1988 | gas phase; Anchored to C6F6..F- in Hiraoka, Mizuse, et al., 1987; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 20.1 | cal/mol*K | N/A | Dillow and Kebarle, 1988 | gas phase; switching reaction,Thermochemical ladder(F-)C6F6, Entropy change calculated or estimated; Hiraoka, Mizuse, et al., 1987; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 30.8 ± 2.0 | kcal/mol | IMRE | Dillow and Kebarle, 1988 | gas phase; Anchored to C6F6..F- in Hiraoka, Mizuse, et al., 1987; B |
Free energy of reaction
ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
30.8 | 423. | PHPMS | Dillow and Kebarle, 1988 | gas phase; switching reaction,Thermochemical ladder(F-)C6F6, Entropy change calculated or estimated; Hiraoka, Mizuse, et al., 1987; M |
By formula: Cl- + C7F5N = (Cl- • C7F5N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrS° | 19.9 | cal/mol*K | PHPMS | Chowdhury and Kebarle, 1986 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 13.5 ± 1.6 | kcal/mol | TDAs | Chowdhury and Kebarle, 1986 | gas phase; B |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess
Electron affinity determinations
EA (eV) | Method | Reference | Comment |
---|---|---|---|
1.08 ± 0.11 | TDEq | Chowdury, Grimsrud, et al., 1986 | ΔGea(423 K) = -27.0±1.0 kcal/mol, ΔSea = +4.4 eu; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.1 | PE | Maier, Marthaler, et al., 1980 | Vertical value; LLK |
10.45 | PE | Neijzen and DeLange, 1978 | Vertical value; LLK |
References
Go To: Top, Reaction thermochemistry data, 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.
Dillow and Kebarle, 1988
Dillow, G.W.; Kebarle, P.,
Fluoride Affinities of Perfluorobenzenes C6F5X. Meisenheimer Complexes in the Gas Phase and Solution,
J. Am. Chem. Soc., 1988, 110, 15, 4877, https://doi.org/10.1021/ja00223a001
. [all data]
Hiraoka, Mizuse, et al., 1987
Hiraoka, K.; Mizuse, S.; Yamabe, S.,
A Determination of the Stability and Structure of F-(C6H6) and F-(C6F6) Clusters,
J. Chem. Phys., 1987, 86, 7, 4102, https://doi.org/10.1063/1.451920
. [all data]
Chowdhury and Kebarle, 1986
Chowdhury, S.; Kebarle, P.,
Role of Binding Energies in A-.B and A.B- Complexes in the Kinetics of Gas Phase Electron Transfer Reactions:A- + B = A + B- Involving Perfluoro Compounds: SF6, C6F11CF3,
J. Chem. Phys., 1986, 85, 9, 4989, https://doi.org/10.1063/1.451687
. [all data]
Chowdury, Grimsrud, et al., 1986
Chowdury, S.; Grimsrud, E.P.; Heinis, T.; Kebarle, P.,
Electron affinities of perfluorobenzene and perfluorophenyl compounds,
J. Am. Chem. Soc., 1986, 108, 3630. [all data]
Maier, Marthaler, et al., 1980
Maier, J.P.; Marthaler, O.; Mohraz, M.,
Decay of some substituted benzene cations in the B states in the gaseous phase,
J. Chim. Phys., 1980, 77, 661. [all data]
Neijzen and DeLange, 1978
Neijzen, B.J.M.; DeLange, C.A.,
Photoelectron spectroscopy of mono-dicyanobenzenes their perfluoro derivatives,
J. Electron Spectrosc. Relat. Phenom., 1978, 14, 187. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
EA Electron affinity T Temperature ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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