Benzobicyclo[2.2.0]hexa-2,5-diene
- Formula: C10H8
- Molecular weight: 128.1705
- IUPAC Standard InChI: InChI=1S/C10H8/c1-2-4-8-7(3-1)9-5-6-10(8)9/h1-6,9-10H
- IUPAC Standard InChIKey: JYKMWOMRHHJZMI-UHFFFAOYSA-N
- CAS Registry Number: 20847-82-9
- 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 | 399. ± 7.9 | kJ/mol | Ciso | Grimme and Heinze, 1978 |
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: C10H8 = C10H8
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -248.5 ± 8.0 | kJ/mol | Eqk | Dreeskamp, Kapahnke, et al., 1988 | liquid phase; solvent: Heptane; Isomerization |
| ΔrH° | -249.2 ± 8.0 | kJ/mol | Ciso | Grimme and Heinze, 1978 | liquid phase; solvent: Heptane |
References
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Grimme and Heinze, 1978
Grimme, W.; Heinze, U.,
Kinetics and enthalpy of isomerization of benzobicyclo[2.2.0]hexa-2,5-diene,
Chem. Ber., 1978, 111, 2563-2570. [all data]
Dreeskamp, Kapahnke, et al., 1988
Dreeskamp, H.; Kapahnke, P.; Tochtermann, W.,
Photo valence isomerization of sterically strained aromatic hydrocarbons: 8,9-dicarbethoxy[6]paracyclophane,
Radiat. Phys. Chem., 1988, 32, 537-539. [all data]
Notes
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- Symbols used in this document:
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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