H2SiO
- Formula: H2OSi
- Molecular weight: 46.1008
- CAS Registry Number: 22755-01-7
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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 evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
Data compiled as indicated in comments:
B - John E. Bartmess
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Proton affinity (review) | 841. | kJ/mol | N/A | Hunter and Lias, 1998 | at O; HL |
Proton affinity (review) | 328. | kJ/mol | N/A | Hunter and Lias, 1998 | at Si; HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 808.5 | kJ/mol | N/A | Hunter and Lias, 1998 | at O; HL |
Gas basicity | 295.5 | kJ/mol | N/A | Hunter and Lias, 1998 | at Si; HL |
De-protonation reactions
HOSi- + = H2OSi
By formula: HOSi- + H+ = H2OSi
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1521. ± 34. | kJ/mol | G+TS | Gronert, O'Hair, et al., 1990 | gas phase; Between acetone, nitromethane; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1490. ± 33. | kJ/mol | IMRB | Gronert, O'Hair, et al., 1990 | gas phase; Between acetone, nitromethane; B |
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 | 1202 | Ar | IR | Withnall and Andrews, 1985 Withnall and Andrews, 1985, 2 | |||
SIH2 deform. | 697 | Ar | IR | Withnall and Andrews, 1985, 2 | |||
Additional references: Jacox, 1994, page 145; Jacox, 1998, page 226; Bailleux, Bogey, et al., 1994; Bogey, Delcroix, et al., 1996
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.
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Gronert, O'Hair, et al., 1990
Gronert, S.; O'Hair, R.A.J.; Prodnuk, S.; Suzle, D.; Damrauer, R.; DePuy, C.H.,
Gas-Phase Chemistry of the Silaformyl Anion, HSiO-,
J. Am. Chem. Soc., 1990, 112, 3, 997, https://doi.org/10.1021/ja00159a016
. [all data]
Withnall and Andrews, 1985
Withnall, R.; Andrews, L.,
Infrared spectroscopic evidence for silicon-oxygen double bonds: silanone and the silanoic and silicic acid molecules,
J. Am. Chem. Soc., 1985, 107, 8, 2567, https://doi.org/10.1021/ja00294a070
. [all data]
Withnall and Andrews, 1985, 2
Withnall, R.; Andrews, L.,
Matrix reactions of silane and oxygen atoms. Infrared spectroscopic evidence for the silanol, silanone, and silanoic and silicic acid molecules,
J. Phys. Chem., 1985, 89, 15, 3261, https://doi.org/10.1021/j100261a019
. [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]
Jacox, 1998
Jacox, M.E.,
Vibrational and electronic energy levels of polyatomic transient molecules: supplement A,
J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017
. [all data]
Bailleux, Bogey, et al., 1994
Bailleux, S.; Bogey, M.; Demuynck, C.; Destombes, J.-L.; Walters, A.,
Millimeter-wave rotational spectrum of H2SiO,
J. Chem. Phys., 1994, 101, 4, 2729, https://doi.org/10.1063/1.467654
. [all data]
Bogey, Delcroix, et al., 1996
Bogey, M.; Delcroix, B.; Walters, A.; Guillemin, J.-C.,
Experimentally Determined Structure of H2SiO by Rotational Spectroscopy and Isotopic Substitution,
J. Mol. Spectrosc., 1996, 175, 2, 421, https://doi.org/10.1006/jmsp.1996.0048
. [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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