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
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Other names: Methylsilane; Silaethane; CH3SiH3
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Reaction thermochemistry data

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Individual Reactions

CH₅Si^- + = Silane, methyl-

By formula: CH₅Si^- + H⁺ = CH₆Si

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	377.4 ± 2.1	kcal/mol	G+TS	Gal, Decouzon, et al., 2001	gas phase
Δ_rH°	378.0 ± 3.0	kcal/mol	D-EA	Wetzel, Salomon, et al., 1989	gas phase
Δ_rH°	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
Δ_rH°	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
Δ_rG°	369.0 ± 2.0	kcal/mol	IMRE	Gal, Decouzon, et al., 2001	gas phase
Δ_rG°	369.6 ± 3.1	kcal/mol	H-TS	Wetzel, Salomon, et al., 1989	gas phase
Δ_rG°	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
Δ_rG°	377.0 ± 4.0	kcal/mol	IMRB	Damrauer, Kass, et al., 1988	gas phase; Between furan and methanol.

CH₅Si^- + = Silane, methyl-

By formula: CH₅Si^- + H⁺ = CH₆Si

Quantity	Value	Units	Method	Reference	Comment
Δ_rH°	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
Δ_rG°	380.0 ± 4.0	kcal/mol	IMRB	Damrauer, Kass, et al., 1988	gas phase; Slightly less acidic then fluorobenzene

References

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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, References

Symbols used in this document:

Δ_rG° Free energy of reaction at standard conditions

Δ_rH° Enthalpy of reaction at standard conditions
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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Δ_rG°	Free energy of reaction at standard conditions
Δ_rH°	Enthalpy of reaction at standard conditions