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
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Reaction thermochemistry data
Go To: Top, Ion clustering data, Mass spectrum (electron ionization), 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° | 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 |
By formula: H- + H4Si = (H- • H4Si)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19.0 ± 4.0 | kcal/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase |
ΔrH° | 22.5 ± 4.5 | kcal/mol | IMRE | Hajdasz and Squires, 1986 | gas phase; QCISD Calculation: H-A = 20.2, 99MOC |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 11.6 ± 4.1 | kcal/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase |
Ion clustering data
Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), 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. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
By formula: H- + H4Si = (H- • H4Si)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 19.0 ± 4.0 | kcal/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase |
ΔrH° | 22.5 ± 4.5 | kcal/mol | IMRE | Hajdasz and Squires, 1986 | gas phase; QCISD Calculation: H-A = 20.2, 99MOC |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 11.6 ± 4.1 | kcal/mol | IMRB | Hajdasz, Ho, et al., 1994 | gas phase |
Mass spectrum (electron ionization)
Go To: Top, Reaction thermochemistry data, Ion clustering 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
Owner | NIST Mass Spectrometry Data Center Collection (C) 2014 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
---|---|
NIST MS number | 39 |
References
Go To: Top, Reaction thermochemistry data, Ion clustering data, Mass spectrum (electron ionization), 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, Ion clustering data, Mass spectrum (electron ionization), 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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.