SiH3 anion
- Formula: H3Si-
- Molecular weight: 31.1099
- CAS Registry Number: 15807-96-2
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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
H3Si- + =
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 373.9 ± 2.1 | kcal/mol | G+TS | Gal, Decouzon, et al., 2001 | gas phase |
| ΔrH° | 372.9 ± 2.1 | kcal/mol | G+TS | Wetzel, Salomon, et al., 1989 | gas phase; value altered from reference due to change in acidity scale |
| ΔrH° | 372.80 ± 0.84 | kcal/mol | D-EA | Nimlos and Ellison, 1986 | gas phase |
| ΔrH° | 372.0 ± 2.1 | kcal/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
| ΔrH° | 373.90 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; MnS-(t); ; ΔS(EA)=5.7 |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 365.7 ± 2.0 | kcal/mol | IMRE | Gal, Decouzon, et al., 2001 | gas phase |
| ΔrG° | 364.7 ± 2.0 | kcal/mol | IMRE | Wetzel, Salomon, et al., 1989 | gas phase; value altered from reference due to change in acidity scale |
| ΔrG° | 364.58 ± 0.94 | kcal/mol | H-TS | Nimlos and Ellison, 1986 | gas phase |
| ΔrG° | 363.8 ± 2.0 | kcal/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
| ΔrG° | 366.40 | kcal/mol | N/A | Check, Faust, et al., 2001 | gas phase; MnS-(t); ; ΔS(EA)=5.7 |
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.
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]
Nimlos and Ellison, 1986
Nimlos, M.R.; Ellison, G.B.,
Photoelectron spectroscopy of SiH3- and SiD3-,
J. Am. Chem. Soc., 1986, 108, 6522. [all data]
Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr.,
The gas phase acidity scale from methanol to phenol,
J. Am. Chem. Soc., 1979, 101, 6047. [all data]
Check, Faust, et al., 2001
Check, C.E.; Faust, T.O.; Bailey, J.M.; Wright, B.J.; Gilbert, T.M.; Sunderlin, L.S.,
Addition of Polarization and Diffuse Functions to the LANL2DZ Basis Set for P-Block Elements,
J. Phys. Chem. A,, 2001, 105, 34, 8111, https://doi.org/10.1021/jp011945l
. [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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