H2C=C radical anion
- Formula: C2H2-
- Molecular weight: 26.0378
- CAS Registry Number: 66295-36-1
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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: John E. Bartmess
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | 92.0 ± 3.6 | kcal/mol | R-EA | Ervin, Gronert, et al., 1990 | Vinylidene neutral: ΔHf<=99±2 kcal, Kiefer, Sidhu, et al., 1989 |
| ΔfH°gas | 61. ± 35. | kcal/mol | IMRB | Dawson and Nibbering, 1978 | |
| ΔfH°gas | 61. ± 35. | kcal/mol | IMRB | Dawson and Jennings, 1976 | O- + C2H4 ->, C2H2- + N2O -> CH2CN- |
References
Go To: Top, Gas phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Ervin, Gronert, et al., 1990
Ervin, K.M.; Gronert, S.; Barlow, S.E.; Gilles, M.K.; Harrison, A.G.; Bierbaum, V.M.; DePuy, C.H.; Lin, W.C.,
Bonds Strengths of Ethylene and Acetylene,
J. Am. Chem. Soc., 1990, 112, 15, 5750, https://doi.org/10.1021/ja00171a013
. [all data]
Kiefer, Sidhu, et al., 1989
Kiefer, J.H.; Sidhu, S.S.; Kumaran, S.S.; Irdan, E.A.,
RRKM Model of C2H4 Dissociation: Heat of Formation of Vinylidene,
Chem. Phys. Lett., 1989, 159, 1, 32, https://doi.org/10.1016/S0009-2614(89)87448-2
. [all data]
Dawson and Nibbering, 1978
Dawson, J.H.J.; Nibbering, N.M.M.,
Concerning CH2=C-. and its reaction with 14N 15NO,
J. Am. Chem. Soc., 1978, 100, 1928. [all data]
Dawson and Jennings, 1976
Dawson, J.H.J.; Jennings, K.R.,
Production of gas phase radical anions by reaction of O-. Ions with organic substrates,
J. Chem. Soc. Faraday Trans. 2, 1976, 72, 700. [all data]
Notes
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- Symbols used in this document:
ΔfH°gas Enthalpy of formation of gas at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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