p-Benzoquinone, 2,3,5,6-tetrafluoro-
- Formula: C6F4O2
- Molecular weight: 180.0566
- IUPAC Standard InChIKey: JKLYZOGJWVAIQS-UHFFFAOYSA-N
- CAS Registry Number: 527-21-9
- 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: p-Fluoranil; 2,5-Cyclohexadiene-1,4-dione, 2,3,5,6-tetrafluoro-; Fluoranil; Fluoroanil; Tetrafluoro-p-benzoquinone; Tetrafluoro-1,4-benzoquinone; Tetrafluoroquinone; 2,3,5,6-Tetrafluoro-p-benzoquinone; Perfluoro-p-benzoquinone; p-Benzoquinone, tetrafluoro-; 2,3,5,6-Tetrafluoro-1,4-benzoquinone; Tetrafluorobenzoquinone; NSC 264881; Tetrafluoro-p-quinone
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Gas phase ion energetics data
Go To: Top, Ion clustering data, Mass spectrum (electron ionization), 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 |
---|---|---|---|
2.70 ± 0.10 | IMRE | Heinis, Chowdhury, et al., 1988 | ΔGea(423 K) = -60.9 kcal/mol; ΔSea (estimated) = -3.5 eu.; B |
2.446 ± 0.048 | IMRE | Fukuda and McIver, 1985 | ΔGea(355 K) = -55.2 kcal/mol; ΔSea =-3.5, est. from data in Heinis, Chowdhury, et al., 1988; B |
2.92 ± 0.20 | NBIE | Cooper, Frey, et al., 1978 | B |
2.26794 | SI | Page and Goode, 1969 | The Magnetron method, lacking mass analysis, is not considered reliable.; B |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
10.7 | PE | Asbrink, Svensson, et al., 1981 | LLK |
10.96 ± 0.05 | PE | Dougherty and McGlynn, 1977 | Vertical value; LLK |
Ion clustering data
Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), 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
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: Cl- + C6F4O2 = (Cl- • C6F4O2)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 27.0 ± 1.0 | kcal/mol | TDAs | Chowdhury and Kebarle, 1986 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 22.7 | cal/mol*K | PHPMS | Chowdhury and Kebarle, 1986 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 20.2 ± 1.6 | kcal/mol | TDAs | Chowdhury and Kebarle, 1986 | gas phase; B |
Mass spectrum (electron ionization)
Go To: Top, Gas phase ion energetics data, Ion clustering 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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
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Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
Origin | Japan AIST/NIMC Database- Spectrum MS-NW-3210 |
NIST MS number | 231243 |
References
Go To: Top, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Heinis, Chowdhury, et al., 1988
Heinis, T.; Chowdhury, S.; Scott, S.L.; Kebarle, P.,
Electron Affinities of Benzo-, Naphtho-, and Anthraquinones Determined from Gas-Phase Equilibria Measurements,
J. Am. Chem. Soc., 1988, 110, 2, 400, https://doi.org/10.1021/ja00210a015
. [all data]
Fukuda and McIver, 1985
Fukuda, E.K.; McIver, R.T., Jr.,
Relative electron affinities of substituted benzophenones, nitrobenzenes, and quinones. [Anchored to EA(SO2) from 74CEL/BEN],
J. Am. Chem. Soc., 1985, 107, 2291. [all data]
Cooper, Frey, et al., 1978
Cooper, C.D.; Frey, W.F.; Compton, R.N.,
Negative ion properties of fluoranil, chloranil, and bromanil: Electron affinities,
J. Chem. Phys., 1978, 69, 2367. [all data]
Page and Goode, 1969
Page, F.M.; Goode, G.C.,
Negative Ions and the Magnetron., Wiley, NY, 1969. [all data]
Asbrink, Svensson, et al., 1981
Asbrink, L.; Svensson, A.; Von Niessen, W.; Bieri, G.,
30.4 nm He(II) photoelectron spectra of organic molecules,
J. Electron Spectrosc. Relat. Phenom., 1981, 24, 293. [all data]
Dougherty and McGlynn, 1977
Dougherty, D.; McGlynn, S.P.,
Photoelectron spectroscopy of carbonyls. 1,4-Benzoquinones,
J. Am. Chem. Soc., 1977, 99, 3234. [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]
Notes
Go To: Top, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), References
- Symbols used in this document:
EA Electron affinity 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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