Cyclopropane,ethenyl-

Formula: C₅H₈
Molecular weight: 68.1170
IUPAC Standard InChI: InChI=1S/C5H8/c1-2-5-3-4-5/h2,5H,1,3-4H2
IUPAC Standard InChIKey: YIWFBNMYFYINAD-UHFFFAOYSA-N
CAS Registry Number: 693-86-7
Chemical structure:
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Other names: Ethenylcyclopropane
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Gas phase thermochemistry data

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Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_gas	127.	kJ/mol	Chyd	Roth, Adamczak, et al., 1991
Δ_fH°_gas	131.2 ± 1.4	kJ/mol	Ccb	Lebedeva, Gutner, et al., 1977

Condensed phase thermochemistry data

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Data compiled by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity	Value	Units	Method	Reference	Comment
Δ_fH°_liquid	102.5 ± 0.8	kJ/mol	Ccb	Lebedeva, Gutner, et al., 1977
Quantity	Value	Units	Method	Reference	Comment
Δ_cH°_liquid	-3213.3 ± 0.8	kJ/mol	Ccb	Lebedeva, Gutner, et al., 1977	Corresponding Δ_fHº_liquid = 102.4 kJ/mol (simple calculation by NIST; no Washburn corrections)
Δ_cH°_liquid	-3233.	kJ/mol	Cm	Fierens and Nasielski, 1962	Corresponding Δ_fHº_liquid = 123. kJ/mol (simple calculation by NIST; no Washburn corrections)
Δ_cH°_liquid	-3010.	kJ/mol	Ccb	Slabey, 1952	Corresponding Δ_fHº_liquid = -100. kJ/mol (simple calculation by NIST; no Washburn corrections)

References

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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]

Lebedeva, Gutner, et al., 1977
Lebedeva, N.D.; Gutner, N.M.; Nazarova, L.F., Enthalpies of burning and the formation of some substituted derivatives of cyclopropane, Termodin. Org. Soedin., 1977, 26-29. [all data]

Fierens and Nasielski, 1962
Fierens, P.J.C.; Nasielski, J., Chaleurs de combustion de derives cyclopropaniques et pouvoir de conjugaison du groupe cyclopropyle, Bull. Soc. Chim. Belg., 1962, 71, 187-202. [all data]

Slabey, 1952
Slabey, V.A., Dehydration of methylcyclopropylcarbinol over alumina. A synthesis of vinylcyclopropane, J. Am. Chem. Soc., 1952, 74, 4930-4932. [all data]

Notes

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Symbols used in this document:

Δ_cH°_liquid	Enthalpy of combustion of liquid at standard conditions
Δ_fH°_gas	Enthalpy of formation of gas at standard conditions
Δ_fH°_liquid	Enthalpy of formation of liquid at standard conditions

Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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