Methanol, TMS derivative

Formula: C₄H₁₂OSi
Molecular weight: 104.2230
IUPAC Standard InChI: InChI=1S/C4H12OSi/c1-5-6(2,3)4/h1-4H3
IUPAC Standard InChIKey: POPACFLNWGUDSR-UHFFFAOYSA-N
CAS Registry Number: 1825-61-2
Chemical structure:
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Other names: Silane, methoxytrimethyl-; Methoxytrimethylsilane; Methyl trimethylsilyl ether; Trimethylmethoxysilane; (CH3)3SiOCH3; Silane, trimethyl, methoxy
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Information on this page:
Other data available:
- Mass spectrum (electron ionization)
Data at other public NIST sites:
- Gas Phase Kinetics Database
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Phase change data

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Data compiled by: Robert L. Brown and Stephen E. Stein

Quantity	Value	Units	Method	Reference	Comment
T_boil	330. to 331.	K	N/A	PCR Inc., 1990

Gas phase ion energetics data

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Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias

Data compiled as indicated in comments:
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Quantity	Value	Units	Method	Reference	Comment
Proton affinity (review)	202.4	kcal/mol	N/A	Hunter and Lias, 1998	HL
Quantity	Value	Units	Method	Reference	Comment
Gas basicity	194.7	kcal/mol	N/A	Hunter and Lias, 1998	HL

Ionization energy determinations

IE (eV)	Method	Reference	Comment
9.61	PE	Molder, Pikver, et al., 1983	LBLHLM
9.79 ± 0.04	EI	Hess, Lampe, et al., 1965	RDSH

Appearance energy determinations

Ion	AE (eV)	Other Products	Method	Reference	Comment
C₃H₉OSi⁺	10.25 ± 0.05	CH₃	EI	Hess, Lampe, et al., 1965	RDSH
C₃H₉Si⁺	12.43 ± 0.18	?	EI	Hess, Lampe, et al., 1965	RDSH

Gas Chromatography

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Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

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Column type	Active phase	Temperature (C)	I	Reference	Comment
Packed	Apiezon M	160.	506.	Peetre, Ellren, et al., 1985	Chromosorb G; Column length: 3. m

Normal alkane RI, non-polar column, isothermal

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Column type	Active phase	Temperature (C)	I	Reference	Comment
Packed	Apieson M	160.	506.	Ellren, Peetre, et al., 1974	Chromosorb G AW DMCS (80-100 mesh)

Normal alkane RI, non-polar column, temperature ramp

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Column type	Active phase	I	Reference	Comment
Capillary	OV-101	562.	Zenkevich, 2005	25. m/0.20 mm/0.10 μm, N2/He, 6. K/min; T_start: 50. C; T_end: 250. C
Capillary	HP-5	563.	Jung, Wichmann, et al., 1999	25. m/0.20 mm/0.33 μm, 50. C @ 3. min, 5. K/min; T_end: 180. C

References

Go To: Top, Phase change data, Gas phase ion energetics data, Gas Chromatography, Notes

PCR Inc., 1990
PCR Inc., Research Chemicals Catalog 1990-1991, PCR Inc., Gainesville, FL, 1990, 1. [all data]

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]

Molder, Pikver, et al., 1983
Molder, U.H.; Pikver, R.J.; Koppel, I.A., Photoelectron spectra of molecules. 2. Ethers, Org. React. (N.Y. Engl. Transl.), 1983, 20, 208. [all data]

Hess, Lampe, et al., 1965
Hess, G.G.; Lampe, F.W.; Sommer, L.H., An electron impact study of ionization and dissociation of trimethylsilanes, J. Am. Chem. Soc., 1965, 87, 5327. [all data]

Peetre, Ellren, et al., 1985
Peetre, I.-B.; Ellren, O.; Smith, B.E.F., Gas chromatographic investigation of organometallic compounds and their carbon analogues. VI. Determination, calculation and correlation of Kováts retention indices for alkylalkoxysilanes, J. Chromatogr., 1985, 318, 41-55, https://doi.org/10.1016/S0021-9673(01)90662-4 . [all data]

Ellren, Peetre, et al., 1974
Ellren, O.; Peetre, I.B.; Smith, B.E.F., Gas chromatographic investigation of organometallic compounds and their carbon analogues. V. Use of refractive index in conjunction with Kovats retention index for the identification of organosilicon compounds, J. Chromatogr., 1974, 93, 2, 383-392, https://doi.org/10.1016/S0021-9673(01)85402-9 . [all data]

Zenkevich, 2005
Zenkevich, I.G., Experimentally measured retention indices., 2005. [all data]

Jung, Wichmann, et al., 1999
Jung, A.; Wichmann, K.-H.; Kolb, M., VOC emission of polymeric packaging materials, LaborPraxis, 1999, 23, 9, 20-22. [all data]

Notes

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Symbols used in this document:

AE Appearance energy

T_boil Boiling point
Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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