Benzene, hexafluoro-

• Formula: C₆F₆
• Molecular weight: 186.0546
• IUPAC Standard InChI: InChI=1S/C6F6/c7-1-2(8)4(10)6(12)5(11)3(1)9 Copy

  
• IUPAC Standard InChIKey: ZQBFAOFFOQMSGJ-UHFFFAOYSA-N Copy
• 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
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Gas Chromatography
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
• Options:
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Gas phase thermochemistry 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 compiled as indicated in comments:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Reaction thermochemistry 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 compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

 +  = ( • )

By formula: Cl^- + C₆F₆ = (Cl^- • C₆F₆)

C₆H₆⁺ +  = (C₆H₆⁺ • )

By formula: C₆H₆⁺ + C₆F₆ = (C₆H₆⁺ • C₆F₆)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₆H₇N⁺ +  = (C₆H₇N⁺ • )

By formula: C₆H₇N⁺ + C₆F₆ = (C₆H₇N⁺ • C₆F₆)

Bond type: Charge transfer bond (positive ion)

C₆F₆^- +  = (C₆F₆^- • )

By formula: C₆F₆^- + C₆F₆ = (C₆F₆^- • C₆F₆)

 +  = ( • )

By formula: F^- + C₆F₆ = (F^- • C₆F₆)

 +  = ( • )

By formula: I^- + C₆F₆ = (I^- • C₆F₆)

 +  = ( • )

By formula: Br^- + C₆F₆ = (Br^- • C₆F₆)

C₆F₆⁺ +  = (C₆F₆⁺ • )

By formula: C₆F₆⁺ + C₆F₆ = (C₆F₆⁺ • C₆F₆)

Bond type: Charge transfer bond (positive ion)

( • ) +  = ( • 2)

By formula: (Cl^- • C₆F₆) + C₆F₆ = (Cl^- • 2C₆F₆)

( • ) +  = ( • 2)

By formula: (I^- • C₆F₆) + C₆F₆ = (I^- • 2C₆F₆)

( • ) +  = ( • 2)

By formula: (Br^- • C₆F₆) + C₆F₆ = (Br^- • 2C₆F₆)

( • ) +  = ( • 2)

By formula: (F^- • C₆F₆) + C₆F₆ = (F^- • 2C₆F₆)

Au^- +  = C₆AuF₆^-

By formula: Au^- + C₆F₆ = C₆AuF₆^-

 +  = ( • )

By formula: Cr⁺ + C₆F₆ = (Cr⁺ • C₆F₆)

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:
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

Electron affinity determinations

Ionization energy determinations

Appearance energy determinations

Ion clustering 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 compiled as indicated in comments:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

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

Au^- +  = C₆AuF₆^-

By formula: Au^- + C₆F₆ = C₆AuF₆^-

 +  = ( • )

By formula: Br^- + C₆F₆ = (Br^- • C₆F₆)

( • ) +  = ( • 2)

By formula: (Br^- • C₆F₆) + C₆F₆ = (Br^- • 2C₆F₆)

C₆F₆⁺ +  = (C₆F₆⁺ • )

By formula: C₆F₆⁺ + C₆F₆ = (C₆F₆⁺ • C₆F₆)

Bond type: Charge transfer bond (positive ion)

C₆F₆^- +  = (C₆F₆^- • )

By formula: C₆F₆^- + C₆F₆ = (C₆F₆^- • C₆F₆)

C₆H₆⁺ +  = (C₆H₆⁺ • )

By formula: C₆H₆⁺ + C₆F₆ = (C₆H₆⁺ • C₆F₆)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

C₆H₇N⁺ +  = (C₆H₇N⁺ • )

By formula: C₆H₇N⁺ + C₆F₆ = (C₆H₇N⁺ • C₆F₆)

Bond type: Charge transfer bond (positive ion)

 +  = ( • )

By formula: Cl^- + C₆F₆ = (Cl^- • C₆F₆)

( • ) +  = ( • 2)

By formula: (Cl^- • C₆F₆) + C₆F₆ = (Cl^- • 2C₆F₆)

 +  = ( • )

By formula: Cr⁺ + C₆F₆ = (Cr⁺ • C₆F₆)

 +  = ( • )

By formula: F^- + C₆F₆ = (F^- • C₆F₆)

( • ) +  = ( • 2)

By formula: (F^- • C₆F₆) + C₆F₆ = (F^- • 2C₆F₆)

 +  = ( • )

By formula: I^- + C₆F₆ = (I^- • C₆F₆)

( • ) +  = ( • 2)

By formula: (I^- • C₆F₆) + C₆F₆ = (I^- • 2C₆F₆)

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

• LIQUID; Not specified, most likely a prism, grating, or hybrid spectrometer.; DIGITIZED BY NIST FROM HARD COPY; 4 cm^-1 resolution

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

• gas

Mass spectrum (electron ionization)

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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 compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

UV/Visible spectrum

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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 compiled by: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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Additional Data

Gas Chromatography

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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 compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Normal alkane RI, non-polar column, temperature ramp

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References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Stewart, 2004
Stewart, J.J.P., Comparison of the accuracy of semiempirical and some DFT methods for predicting heats of formation, J. Mol. Model, 2004, 10, 1, 6-10, https://doi.org/10.1007/s00894-003-0157-6 . [all data]

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Ryzhov, 1999
Ryzhov, V., Binding Energies of Chromium Cations with Fluorobenzenes from Radiative Association Kinetics, Int. J. Mass Spectrom., 1999, 185/186/187, 913. [all data]

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]

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]

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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]

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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]

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Page, F.M.; Goode, G.C., Negative Ions and the Magnetron., Wiley, NY, 1969. [all data]

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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]

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Notes

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• Symbols used in this document:
  

  AE	Appearance energy
  EA	Electron affinity
  IE (evaluated)	Recommended ionization energy
  T	Temperature
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  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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