Me2PCH2 anion
- Formula: C3H8P-
- Molecular weight: 75.0699
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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
C3H8P- + =
By formula: C3H8P- + H+ = C3H9P
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 391.1 ± 2.1 | kcal/mol | G+TS | Ingemann and Nibbering, 1985 | gas phase |
| ΔrH° | 385.3 ± 4.1 | kcal/mol | G+TS | Romer, Gatev, et al., 1998 | gas phase; The conflict with Ingemann and Nibbering, 1985, 22 is not resolved |
| ΔrH° | 384.2 ± 3.2 | kcal/mol | G+TS | Grabowski, Roy, et al., 1988 | gas phase; Between O-. and MeO-, nearer the latter. |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 383.8 ± 2.0 | kcal/mol | IMRE | Ingemann and Nibbering, 1985 | gas phase |
| ΔrG° | 378.0 ± 4.0 | kcal/mol | IMRB | Romer, Gatev, et al., 1998 | gas phase; The conflict with Ingemann and Nibbering, 1985, 22 is not resolved |
| ΔrG° | 376.9 ± 3.1 | kcal/mol | IMRB | Grabowski, Roy, et al., 1988 | gas phase; Between O-. and MeO-, nearer the latter. |
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.
Ingemann and Nibbering, 1985
Ingemann, S.; Nibbering, N.M.M.,
Gas-phase acidity of CH3X [X = P(CH3)2, SCH3, F, Cl, Br, I] compounds,
J. Chem. Soc. Perkin Trans. 2, 1985, 837. [all data]
Romer, Gatev, et al., 1998
Romer, B.; Gatev, G.G.; Zhong, M.; Brauman, J.I.,
Alpha-Stabilization by Silyl and Phosphino Substitution,
J. Am. Chem. Soc., 1998, 120, 12, 2919, https://doi.org/10.1021/ja970279s
. [all data]
Ingemann and Nibbering, 1985, 2
Ingemann, S.; Nibbering, N.M.M.,
Gas phase chemistry of alpha-thio carbanions,
Can. J. Chem., 1985, 62, 2273. [all data]
Grabowski, Roy, et al., 1988
Grabowski, J.J.; Roy, P.D.; Leone, R.,
Trimethylphosphine: Anion-Molecule Reactions and Acidity in the Gas Phase,
J. Chem. Soc. Perkin Trans., 1988, 2, 8, 1627, https://doi.org/10.1039/p29880001627
. [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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