MeSiH2 anion
- Formula: CH5Si-
- Molecular weight: 45.1364
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics 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
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Individual Reactions
By formula: CH5Si- + H+ = CH6Si
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1579. ± 8.8 | kJ/mol | G+TS | Gal, Decouzon, et al., 2001 | gas phase |
ΔrH° | 1582. ± 13. | kJ/mol | D-EA | Wetzel, Salomon, et al., 1989 | gas phase |
ΔrH° | 1582. ± 8.8 | kJ/mol | G+TS | Wetzel, Salomon, et al., 1989 | gas phase; 0.8 kcal/mol weaker than iPrOH; value altered from reference due to change in acidity scale |
ΔrH° | 1613. ± 17. | kJ/mol | G+TS | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1544. ± 8.4 | kJ/mol | IMRE | Gal, Decouzon, et al., 2001 | gas phase |
ΔrG° | 1546. ± 13. | kJ/mol | H-TS | Wetzel, Salomon, et al., 1989 | gas phase |
ΔrG° | 1546. ± 8.4 | kJ/mol | IMRE | Wetzel, Salomon, et al., 1989 | gas phase; 0.8 kcal/mol weaker than iPrOH; value altered from reference due to change in acidity scale |
ΔrG° | 1577. ± 17. | kJ/mol | IMRB | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol. |
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
Electron affinity of neutral species
EAneutral (eV) | Method | Reference | Comment |
---|---|---|---|
1.193 ± 0.035 | LPD | Wetzel, Salomon, et al., 1989 |
Protonation reactions
By formula: CH5Si- + H+ = CH6Si
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1579. ± 8.8 | kJ/mol | G+TS | Gal, Decouzon, et al., 2001 | gas phase |
ΔrH° | 1582. ± 13. | kJ/mol | D-EA | Wetzel, Salomon, et al., 1989 | gas phase |
ΔrH° | 1582. ± 8.8 | kJ/mol | G+TS | Wetzel, Salomon, et al., 1989 | gas phase; 0.8 kcal/mol weaker than iPrOH; value altered from reference due to change in acidity scale |
ΔrH° | 1613. ± 17. | kJ/mol | G+TS | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol. |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1544. ± 8.4 | kJ/mol | IMRE | Gal, Decouzon, et al., 2001 | gas phase |
ΔrG° | 1546. ± 13. | kJ/mol | H-TS | Wetzel, Salomon, et al., 1989 | gas phase |
ΔrG° | 1546. ± 8.4 | kJ/mol | IMRE | Wetzel, Salomon, et al., 1989 | gas phase; 0.8 kcal/mol weaker than iPrOH; value altered from reference due to change in acidity scale |
ΔrG° | 1577. ± 17. | kJ/mol | IMRB | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol. |
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.
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
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- 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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