Bicyclo[2.2.2]octa-2,5,7-triene
- Formula: C8H8
- Molecular weight: 104.1491
- IUPAC Standard InChIKey: RHCCUQVVABYRDN-UHFFFAOYSA-N
- CAS Registry Number: 500-24-3
- Chemical structure:
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Phase change 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 by: William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔvapH° | 42.9 ± 0.1 | kJ/mol | C | Kusano, 1985 |
Gas phase ion energetics data
Go To: Top, Phase change 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:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C8H8+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.23 | PE | Haselbach, Heilbronner, et al., 1971 | LLK |
8.24 | PE | Bodor, Dewar, et al., 1970 | RDSH |
7.95 ± 0.10 | EI | Franklin and Carroll, 1969 | RDSH |
8.23 | PE | Gleiter, Bohm, et al., 1983 | Vertical value; LBLHLM |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C3H3+ | 13.64 ± 0.25 | ? | EI | Franklin and Carroll, 1969 | RDSH |
C4H2+ | 17.20 ± 0.30 | 2C2H2+H2 | EI | Franklin and Carroll, 1969 | RDSH |
C4H3+ | 18.04 ± 0.10 | 2C2H2+H | EI | Franklin and Carroll, 1969 | RDSH |
C4H4+ | 15.31 ± 0.20 | 2C2H2 | EI | Franklin and Carroll, 1969 | RDSH |
C5H3+ | 16.11 ± 0.10 | ? | EI | Franklin and Carroll, 1969 | RDSH |
C6H5+ | 14.49 ± 0.10 | C2H2+H | EI | Franklin and Carroll, 1969 | RDSH |
C6H6+ | 10.50 ± 0.10 | C2H2 | EI | Franklin and Carroll, 1969 | RDSH |
C8H6+ | 11.97 ± 0.20 | H2 | EI | Franklin and Carroll, 1969 | RDSH |
C8H7+ | 10.63 ± 0.10 | H | EI | Franklin and Carroll, 1969 | RDSH |
References
Go To: Top, Phase change 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.
Kusano, 1985
Kusano, Kazuhito,
Micro conduction calorimeters to measure enthalpies of vaporization,
Thermochimica Acta, 1985, 88, 1, 109-120, https://doi.org/10.1016/0040-6031(85)85418-6
. [all data]
Haselbach, Heilbronner, et al., 1971
Haselbach, E.; Heilbronner, E.; Schroder, G.,
The interaction of π-orbitals in barrelene,
Helv. Chim. Acta, 1971, 54, 153. [all data]
Bodor, Dewar, et al., 1970
Bodor, N.; Dewar, M.J.S.; Worley, S.D.,
Photoelectron spectra of molecules. III. Ionization potentials of some cyclic hydrocarbons and their derivatives, and heats of formation and ionization potentials calculated by the MINDO SCF MO method,
J. Am. Chem. Soc., 1970, 92, 19. [all data]
Franklin and Carroll, 1969
Franklin, J.L.; Carroll, S.R.,
The effect of molecular structure on ionic decomposition. I. An electron impact study of seven C8H8 isomers,
J. Am. Chem. Soc., 1969, 91, 5940. [all data]
Gleiter, Bohm, et al., 1983
Gleiter, R.; Bohm, M.C.; de Meijere, A.; Preuss, T.,
Electronic structure and reactivity of homobarrelene derivatives,
J. Org. Chem., 1983, 48, 796. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔvapH° Enthalpy of vaporization at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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