Et(Me)CH anion
- Formula: C4H9-
- Molecular weight: 57.1148
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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
C4H9- + =
By formula: C4H9- + H+ = C4H10
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 415.7 ± 2.0 | kcal/mol | Bran | DePuy, Gronert, et al., 1989 | gas phase; The HOF(Et(Me)N.) in Seetula, Russell, et al., 1990 gives BDE(N-H) = 99 kcal/mol, ca. 5 kcal/mol too strong |
| ΔrH° | 417.1 ± 4.8 | kcal/mol | Bran | Peerboom, Rademaker, et al., 1992 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 407.1 ± 2.1 | kcal/mol | H-TS | DePuy, Gronert, et al., 1989 | gas phase; The HOF(Et(Me)N.) in Seetula, Russell, et al., 1990 gives BDE(N-H) = 99 kcal/mol, ca. 5 kcal/mol too strong |
| ΔrG° | 408.5 ± 4.9 | kcal/mol | H-TS | Peerboom, Rademaker, et al., 1992 | gas phase |
References
Go To: Top, 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.
DePuy, Gronert, et al., 1989
DePuy, C.H.; Gronert, S.; Barlow, S.E.; Bierbaum, V.M.; Damrauer, R.,
The Gas Phase Acidities of the Alkanes,
J. Am. Chem. Soc., 1989, 111, 6, 1968, https://doi.org/10.1021/ja00188a003
. [all data]
Seetula, Russell, et al., 1990
Seetula, J.A.; Russell, J.J.; Gutman, D.,
Kinetics and Thermochemistry of the Reactions of Alkyl Radicals with HI: A Reconciliation of the Alkyl Radical Heats of Formation,
J. Am. Chem. Soc., 1990, 112, 4, 1347, https://doi.org/10.1021/ja00160a009
. [all data]
Peerboom, Rademaker, et al., 1992
Peerboom, R.A.L.; Rademaker, G.J.; Dekoning, L.J.; Nibbering, N.M.M.,
Stabilization of Cycloalkyl Carbanions in the Gas Phase,
Rapid Commun. Mass Spectrom., 1992, 6, 6, 394, https://doi.org/10.1002/rcm.1290060608
. [all data]
Notes
Go To: Top, 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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