- Formula: C5H8
- Molecular weight: 68.1170
- IUPAC Standard InChI:
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- IUPAC Standard InChIKey: YIWFBNMYFYINAD-UHFFFAOYSA-N
- CAS Registry Number: 693-86-7
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
- Other names: Ethenylcyclopropane
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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 as indicated in comments:
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
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By formula: C5H7- + H+ = C5H8
|rH°||1647. ± 13.||kJ/mol||G+TS||Guo and Kass, 1992||gas phase; Between Me2NH, H2O; B|
|rG°||1617. ± 13.||kJ/mol||IMRB||Guo and Kass, 1992||gas phase; Between Me2NH, H2O; B|
2 + =
By formula: 2H2 + C5H8 = C5H12
|rH°||-274. ± 0.8||kJ/mol||Chyd||Roth, Kirmse, et al., 1982||liquid phase; solvent: Isooctane; ALS|
By formula: H2 + C5H8 = C5H10
|rH°||-149. ± 4.2||kJ/mol||Chyd||Chesick, 1963||liquid phase; solvent: Acetic acid; ALS|
By formula: C5H8 = C5H8
|rH°||-2.4 ± 0.84||kJ/mol||Eqk||Chesick, 1963||gas phase; ALS|
Go To: Top, Reaction thermochemistry data, Notes
Guo and Kass, 1992
Guo, H.Z.; Kass, S.R., Vinylcyclopropyl Anion - Structure, Reactivity, Thermodynamic Properties, and an Unusual Rearrangement, J. Am. Chem. Soc., 1992, 114, 4, 1244, https://doi.org/10.1021/ja00030a019 . [all data]
Roth, Kirmse, et al., 1982
Roth, W.R.; Kirmse, W.; Hoffmann, W.; Lennartz, H.W., Heats of hydrogenation. III. Effect of fluoro substituents on the thermal rearrangement of cyclopropane systems, Chem. Ber., 1982, 115, 2508-2515. [all data]
Chesick, J.P., Kinetics of the thermal interconversion of 2-methylmethylenecyclopropane and ethylidenecyclopropane, J. Am. Chem. Soc., 1963, 85, 2720-2723. [all data]
Go To: Top, Reaction thermochemistry data, References
- Symbols used in this document:
rG° Free energy of reaction at standard conditions rH° Enthalpy of reaction at standard conditions
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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