(E)-2-C4F8
- Formula: C4F8
- Molecular weight: 200.0300
- CAS Registry Number: 1516-64-9
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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Individual Reactions
C4F8 =
By formula: C4F8 = C4F8
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 3.42 ± 0.18 | kJ/mol | Eqk | Schlag and Kaiser, 1965 | gas phase |
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 compiled as indicated in comments:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
B - John E. Bartmess
View reactions leading to C4F8+ (ion structure unspecified)
Electron affinity determinations
| EA (eV) | Method | Reference | Comment |
|---|---|---|---|
| 0.790 ± 0.060 | N/A | Van Doren, Condon, et al., 2010 | Trans-isomer; B |
| >0.70 ± 0.30 | Endo | Lifshitz, Tiernan, et al., 1973 | B |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 11.55 | PE | Robin, Taylor, et al., 1973 | Vertical value; LLK |
| 11.55 | PE | Brundle, Robin, et al., 1972 | Vertical value; LLK |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Schlag and Kaiser, 1965
Schlag, E.W.; Kaiser, E.W., Jr.,
The thermal trans-cis isomerization of octafluorobutene-2,
J. Am. Chem. Soc., 1965, 87, 1171-1174. [all data]
Van Doren, Condon, et al., 2010
Van Doren, J.M.; Condon, L.R.; DeSouza-Goding, A.; Miller, T.M.; Bopp, J.C.; Viggiano, A.A.,
Electron Affinity of trans-2-C4F8 from Electron Attachment-Detachment Kinetics,
J. Phys. Chem. A, 2010, 114, 3, 1420-1426, https://doi.org/10.1021/jp907154m
. [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]
Robin, Taylor, et al., 1973
Robin, M.B.; Taylor, G.N.; Kuebler, N.A.; Bach, R.D.,
Planarity of the carbon skeleton in various alkylated olefins,
J. Org. Chem., 1973, 38, 1049. [all data]
Brundle, Robin, et al., 1972
Brundle, C.R.; Robin, M.B.; Kuebler, N.A.; Basch, H.,
Perfluoro effect in photoelectron spectroscopy. I. Nonaromatic molecules,
J. Am. Chem. Soc., 1972, 94, 1451. [all data]
Notes
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- Symbols used in this document:
EA Electron affinity ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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