Silane, methyl-
- Formula: CH6Si
- Molecular weight: 46.1438
- IUPAC Standard InChI: InChI=1S/CH6Si/c1-2/h1-2H3
- IUPAC Standard InChIKey: UIUXUFNYAYAMOE-UHFFFAOYSA-N
- CAS Registry Number: 992-94-9
- 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: Methylsilane; Silaethane; CH3SiH3
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Reaction thermochemistry data
Go To: Top, IR Spectrum, 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
CH5Si- + =
By formula: CH5Si- + H+ = CH6Si
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 377.4 ± 2.1 | kcal/mol | G+TS | Gal, Decouzon, et al., 2001 | gas phase |
| ΔrH° | 378.0 ± 3.0 | kcal/mol | D-EA | Wetzel, Salomon, et al., 1989 | gas phase |
| ΔrH° | 378.0 ± 2.1 | kcal/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° | 385.4 ± 4.1 | kcal/mol | G+TS | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol. |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 369.0 ± 2.0 | kcal/mol | IMRE | Gal, Decouzon, et al., 2001 | gas phase |
| ΔrG° | 369.6 ± 3.1 | kcal/mol | H-TS | Wetzel, Salomon, et al., 1989 | gas phase |
| ΔrG° | 369.6 ± 2.0 | kcal/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° | 377.0 ± 4.0 | kcal/mol | IMRB | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol. |
CH5Si- + =
By formula: CH5Si- + H+ = CH6Si
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 388.4 ± 4.1 | kcal/mol | G+TS | Damrauer, Kass, et al., 1988 | gas phase; Slightly less acidic then fluorobenzene |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 380.0 ± 4.0 | kcal/mol | IMRB | Damrauer, Kass, et al., 1988 | gas phase; Slightly less acidic then fluorobenzene |
IR Spectrum
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Data compiled by: Coblentz Society, Inc.
- GAS (22 mmHg, N2 ADDED, TOTAL PRESSURE 750 mmHg); PERKIN-ELMER 521 (GRATING); DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 2 cm-1 resolution
- GAS (22 mmHg, TO 750 mmHg WITH N2 DILUTION); PERKIN-ELMER 521 (GRATING); DIGITIZED BY COBLENTZ SOCIETY (BATCH II) FROM HARD COPY; 2 cm-1 resolution
Mass spectrum (electron ionization)
Go To: Top, Reaction thermochemistry data, IR Spectrum, 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
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Additional Data
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| 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. |
|---|---|
| Origin | R.W.CRAWFORD UNIV. OF CALIFORNIA, LIVERMORE, CALIFORNIA, USA |
| NIST MS number | 80 |
References
Go To: Top, Reaction thermochemistry data, IR Spectrum, 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]
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, IR Spectrum, 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
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