dimethyloxosilane
- Formula: C2H6OSi
- Molecular weight: 74.1539
- IUPAC Standard InChIKey: SEUDSDUUJXTXSV-UHFFFAOYSA-N
- CAS Registry Number: 47956-45-6
- 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: Silane, dimethyloxo-
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Gas phase ion energetics data
Go To: Top, Vibrational and/or electronic energy levels, 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
De-protonation reactions
C2H5OSi- + =
By formula: C2H5OSi- + H+ = C2H6OSi
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 363.6 ± 4.1 | kcal/mol | G+TS | Damrauer and Krempp, 1990 | gas phase; between CF3CH2OH and CH3CHO in acidity |
ΔrH° | 363.7 ± 4.1 | kcal/mol | G+TS | Froelicher, Freiser, et al., 1984 | gas phase; Between aniline, CF3CH2OH in acidity |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 356.5 ± 4.0 | kcal/mol | IMRB | Damrauer and Krempp, 1990 | gas phase; between CF3CH2OH and CH3CHO in acidity |
ΔrG° | 356.6 ± 4.0 | kcal/mol | IMRB | Froelicher, Freiser, et al., 1984 | gas phase; Between aniline, CF3CH2OH in acidity |
Vibrational and/or electronic energy levels
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: Marilyn E. Jacox
State: X
Vib. sym. |
No. | Approximate type of mode |
cm-1 | Med. | Method | References | |
---|---|---|---|---|---|---|---|
Si=O stretch | 1209.6 | Ar | IR | Arrington, West, et al., 1983 Withnall and Andrews, 1986 Withnall and Andrews, 1988 | |||
Additional references: Jacox, 1994, page 416
References
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Damrauer and Krempp, 1990
Damrauer, R.; Krempp, M.,
Gas Phase Ion-Molecule Chemistry of Methoxy-Substituted Silanes: Collision Induced Decomposition of Siloxide Ions Leading to Anions of Silaacetaldehyde and Methyl Silaformate,
Organomet., 1990, 9, 4, 999, https://doi.org/10.1021/om00118a015
. [all data]
Froelicher, Freiser, et al., 1984
Froelicher, S.W.; Freiser, B.S.; Squires, R.R.,
Dimethylsilanone Enolate,
J. Am. Chem. Soc., 1984, 106, 22, 6863, https://doi.org/10.1021/ja00334a077
. [all data]
Arrington, West, et al., 1983
Arrington, C.A.; West, R.; Michl, J.,
On the proposed thermal interconversion of matrix-isolated dimethylsilylene and 1-methylsilene: their reactions with oxygen atom donors,
J. Am. Chem. Soc., 1983, 105, 19, 6176, https://doi.org/10.1021/ja00357a048
. [all data]
Withnall and Andrews, 1986
Withnall, R.; Andrews, L.,
Infrared spectroscopic evidence for silicon-oxygen double bonds: methyl- and dimethylsilanones in solid argon,
J. Am. Chem. Soc., 1986, 108, 25, 8118, https://doi.org/10.1021/ja00285a054
. [all data]
Withnall and Andrews, 1988
Withnall, R.; Andrews, L.,
Matrix reactions of methylsilanes and oxygen atoms,
J. Phys. Chem., 1988, 92, 3, 594, https://doi.org/10.1021/j100314a006
. [all data]
Jacox, 1994
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]
Notes
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, 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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