1-CHO-cyclopropanide anion
- Formula: C4H5O-
- Molecular weight: 69.0824
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Gas phase ion energetics 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
Protonation reactions
C4H5O- + =
By formula: C4H5O- + H+ = C4H6O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 375.8 ± 2.1 | kcal/mol | G+TS | Chou, Dahlke, et al., 1993 | gas phase; barrier for opening to CH2=C(CHO)CH2-: 29 kcal/mol. |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 368.7 ± 2.0 | kcal/mol | IMRE | Chou, Dahlke, et al., 1993 | gas phase; barrier for opening to CH2=C(CHO)CH2-: 29 kcal/mol. |
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.
Chou, Dahlke, et al., 1993
Chou, P.K.; Dahlke, G.D.; Kass, S.R.,
Unimolecular Rearrangements of Carbanions in the Gas Phase .2. Cyclopropyl Anions,
J. Chem. Soc. Chem. Comm., 1993, 115, 1, 315, https://doi.org/10.1021/ja00054a045
. [all data]
Notes
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- Symbols used in this document:
ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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