CH2=C(CH=CH2)O anion
- Formula: C4H5O-
- Molecular weight: 69.0824
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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 by: John E. Bartmess
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Individual Reactions
C4H5O- + =
By formula: C4H5O- + H+ = C4H6O
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 363.3 ± 2.1 | kcal/mol | G+TS | Bartmess and Kiplinger, 1986 | gas phase; value altered from reference due to change in acidity scale |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 356.5 ± 2.0 | kcal/mol | IMRE | Bartmess and Kiplinger, 1986 | gas phase; value altered from reference due to change in acidity scale |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, References, Notes
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° | 363.3 ± 2.1 | kcal/mol | G+TS | Bartmess and Kiplinger, 1986 | gas phase; value altered from reference due to change in acidity scale |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 356.5 ± 2.0 | kcal/mol | IMRE | Bartmess and Kiplinger, 1986 | gas phase; value altered from reference due to change in acidity scale |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Bartmess and Kiplinger, 1986
Bartmess, J.E.; Kiplinger, J.P.,
'Kinetic' vs. thermodynamic acidities of enones in the gas phase,
J. Org. Chem., 1986, 51, 2173. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- 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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