Cyclobutane, methylene-
- Formula: C5H6
- Molecular weight: 66.1011
- IUPAC Standard InChI: InChI=1S/C5H8/c1-5-3-2-4-5/h1-4H2
- IUPAC Standard InChIKey: QIRVGKYPAOQVNP-UHFFFAOYSA-N
- CAS Registry Number: 27538-13-2
- Chemical structure:
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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
=
By formula: C5H6 = C5H6
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | -8. ± 3. | kJ/mol | Eqk | Roth, Hopf, et al., 1994 | gas phase; At 490 K |
| ΔrH° | -3.6 | kJ/mol | Eqk | Pasto and Kong, 1989 | liquid phase |
References
Go To: Top, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Roth, Hopf, et al., 1994
Roth, W.R.; Hopf, H.; Horn, C.,
Propargyl-Stabilisierungsenergie,
Chem. Ber., 1994, 127, 1781-1795. [all data]
Pasto and Kong, 1989
Pasto, D.J.; Kong, W.,
Study of the substituted vinylallene-methylenecyclobutene electrocyclic equilibria. Comparison with the butadiene-cyclobutene and bisallene-bismethylenecyclobutene electrocyclic equilibria,
J. Org. Chem., 1989, 54, 4028-4033. [all data]
Notes
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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