PhSiH2 anion
- Formula: C6H7Si-
- Molecular weight: 107.2058
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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
C6H7Si- + =
By formula: C6H7Si- + H+ = C6H8Si
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 369.2 ± 2.1 | kcal/mol | G+TS | Gal, Decouzon, et al., 2001 | gas phase |
| ΔrH° | 368.1 ± 2.1 | kcal/mol | G+TS | Wetzel, Salomon, et al., 1989 | gas phase; 1.2 kcal/mol stronger than tBuCH(iPr)OH; value altered from reference due to change in acidity scale |
| ΔrH° | 368.7 ± 3.0 | kcal/mol | D-EA | Wetzel, Salomon, et al., 1989 | gas phase; D-EA cycle give BDE=87.7±2.2 kcal/mol |
| ΔrH° | 370.7 ± 4.1 | kcal/mol | G+TS | Damrauer, Kass, et al., 1988 | gas phase; Between HF and acetone |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 362.1 ± 2.0 | kcal/mol | IMRE | Gal, Decouzon, et al., 2001 | gas phase |
| ΔrG° | 361.0 ± 2.0 | kcal/mol | IMRE | Wetzel, Salomon, et al., 1989 | gas phase; 1.2 kcal/mol stronger than tBuCH(iPr)OH; value altered from reference due to change in acidity scale |
| ΔrG° | 361.5 ± 3.1 | kcal/mol | H-TS | Wetzel, Salomon, et al., 1989 | gas phase; D-EA cycle give BDE=87.7±2.2 kcal/mol |
| ΔrG° | 363.6 ± 4.0 | kcal/mol | IMRB | Damrauer, Kass, et al., 1988 | gas phase; Between HF and acetone |
References
Go To: Top, Reaction thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Gal, Decouzon, et al., 2001
Gal, J.F.; Decouzon, M.; Maria, P.C.; Gonzalez, A.I.; Mo, O.; Yanez, M.; El Chaouch, S.; Guillemin, J.C.,
Acidity trends in alpha,beta-unsaturated alkanes, silanes, germanes, and stannanes,
J. Am. Chem. Soc., 2001, 123, 26, 6353-6359, https://doi.org/10.1021/ja004079j
. [all data]
Wetzel, Salomon, et al., 1989
Wetzel, D.M.; Salomon, K.E.; Berger, S.; Brauman, J.I.,
Gas-Phase Acidities of Organosilanes and Electron Affinities of Organosilyl Radicals,
J. Am. Chem. Soc., 1989, 111, 11, 3835, https://doi.org/10.1021/ja00193a013
. [all data]
Damrauer, Kass, et al., 1988
Damrauer, R.; Kass, S.R.; DePuy, C.H.,
Gas-Phase Acidities of Methylsilanes: C-H versus Si-H,
Organomet., 1988, 7, 3, 637, https://doi.org/10.1021/om00093a011
. [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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