Bicyclo[3.2.0]hepta-2,6-diene
- Formula: C7H8
- Molecular weight: 92.1384
- IUPAC Standard InChIKey: PZWQRDVVVKIYLX-UHFFFAOYSA-N
- CAS Registry Number: 2422-86-8
- Chemical structure:
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 63.2 | kcal/mol | Chyd | Roth, Adamczak, et al., 1991 |
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
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: 2H2 + C7H8 = C7H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -62.6 ± 0.1 | kcal/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid 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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
View reactions leading to C7H8+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.35 | PE | Traeger and McLoughlin, 1978 | LLK |
8.35 | PI | Traeger and McLoughlin, 1978 | LLK |
8.92 | EI | Lifshitz and Bauer, 1963 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C5H5+ | 14.9 | ? | EI | Harrison, Haynes, et al., 1965 | RDSH |
C5H5+ | 14.89 | ? | EI | Lifshitz and Bauer, 1963 | RDSH |
C5H6+ | 10.02 | ? | EI | Lifshitz and Bauer, 1963 | RDSH |
C7H7+ | 9.25 | H | PI | Traeger and McLoughlin, 1978 | LLK |
C7H7+ | 9.66 | H | EI | Lifshitz and Bauer, 1963 | RDSH |
References
Go To: Top, Gas phase thermochemistry data, 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.
Roth, Adamczak, et al., 1991
Roth, W.R.; Adamczak, O.; Breuckmann, R.; Lennartz, H.-W.; Boese, R.,
Die Berechnung von Resonanzenergien; das MM2ERW-Kraftfeld,
Chem. Ber., 1991, 124, 2499-2521. [all data]
Traeger and McLoughlin, 1978
Traeger, J.C.; McLoughlin, R.G.,
A photoionization study of the energetics of C7H7+ ion formed from C7H8 precursors,
Int. J. Mass Spectrom. Ion Phys., 1978, 27, 319. [all data]
Lifshitz and Bauer, 1963
Lifshitz, C.; Bauer, S.H.,
Mass spectra of valence tautomers,
J. Phys. Chem., 1963, 67, 1629. [all data]
Harrison, Haynes, et al., 1965
Harrison, A.G.; Haynes, P.; McLean, S.; Meyer, F.,
The mass spectra of methyl-substituted cyclopentadienes,
J. Am. Chem. Soc., 1965, 87, 5099. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔfH°gas Enthalpy of formation of gas at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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