Silane
- Formula: H4Si
- Molecular weight: 32.1173
- IUPAC Standard InChIKey: BLRPTPMANUNPDV-UHFFFAOYSA-N
- CAS Registry Number: 7803-62-5
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Silicane; Silicon hydride (SiH4); Silicon tetrahydride; SiH4; Monosilane; Silicon hydride; UN 2203
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Reaction thermochemistry data
Go To: Top, 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
H3Si- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1564. ± 8.8 | kJ/mol | G+TS | Gal, Decouzon, et al., 2001 | gas phase |
ΔrH° | 1560. ± 8.8 | kJ/mol | G+TS | Wetzel, Salomon, et al., 1989 | gas phase; value altered from reference due to change in acidity scale |
ΔrH° | 1559.8 ± 3.5 | kJ/mol | D-EA | Nimlos and Ellison, 1986 | gas phase |
ΔrH° | 1556. ± 8.8 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
ΔrH° | 1564.4 | kJ/mol | N/A | Check, Faust, et al., 2001 | gas phase; MnS-(t); ; ΔS(EA)=5.7 |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1530. ± 8.4 | kJ/mol | IMRE | Gal, Decouzon, et al., 2001 | gas phase |
ΔrG° | 1526. ± 8.4 | kJ/mol | IMRE | Wetzel, Salomon, et al., 1989 | gas phase; value altered from reference due to change in acidity scale |
ΔrG° | 1525.4 ± 3.9 | kJ/mol | H-TS | Nimlos and Ellison, 1986 | gas phase |
ΔrG° | 1522. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale |
ΔrG° | 1533.0 | kJ/mol | N/A | Check, Faust, et al., 2001 | gas phase; MnS-(t); ; ΔS(EA)=5.7 |
By formula: H- + H4Si = (H- • H4Si)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 79. ± 17. | kJ/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase |
ΔrH° | 94. ± 19. | kJ/mol | IMRE | Hajdasz and Squires, 1986 | gas phase; QCISD Calculation: H-A = 20.2, 99MOC |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 49. ± 17. | kJ/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase |
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]
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]
Hajdasz, Ho, et al., 1994
Hajdasz, D.J.; Ho, Y.; Squires, R.R.,
Gas-Phase Chemistry of Pentacoordinate Silicon Hydrides,
J. Am. Chem. Soc., 1994, 116, 23, 10751, https://doi.org/10.1021/ja00102a045
. [all data]
Hajdasz and Squires, 1986
Hajdasz, D.J.; Squires, R.R.,
Hypervalent silicon hydrides: SiH5-,
J. Am. Chem. Soc., 1986, 108, 3139. [all data]
Notes
Go To: Top, Reaction thermochemistry 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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