3,3-dimethyl-cyclopropenide anion
- Formula: C5H7-
- Molecular weight: 67.1096
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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
Electron affinity of neutral species
| EAneutral (eV) | Method | Reference | Comment |
|---|---|---|---|
| 1.63 ± 0.15 | IMRB | Fattahi, McCarthy, et al., 2003 |
Protonation reactions
C5H7- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 382.6 ± 1.4 | kcal/mol | G+TS | Fattahi, McCarthy, et al., 2003 | gas phase; Maybe be ring-opened HCC-C(Me)2- structure |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 374.4 ± 1.3 | kcal/mol | IMRE | Fattahi, McCarthy, et al., 2003 | gas phase; Maybe be ring-opened HCC-C(Me)2- structure |
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.
Fattahi, McCarthy, et al., 2003
Fattahi, A.; McCarthy, R.E.; Ahmad, M.R.; Kass, S.R.,
Why does cyclopropene have the acidity of an acetylene but the bond energy of methane?,
J. Am. Chem. Soc., 2003, 125, 38, 11746-11750, https://doi.org/10.1021/ja035725s
. [all data]
Notes
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- Symbols used in this document:
EAneutral Electron affinity of neutral species 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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