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Silane, dimethyl-


Reaction thermochemistry data

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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

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Individual Reactions

C2H7Si- + Hydrogen cation = Silane, dimethyl-

By formula: C2H7Si- + H+ = C2H8Si

Quantity Value Units Method Reference Comment
Deltar380.9 ± 2.1kcal/molD-EABrinkman, Berger, et al., 1994gas phase
Deltar384.7 ± 4.1kcal/molG+TSDamrauer, Kass, et al., 1988gas phase; Between furan and methanol.
Quantity Value Units Method Reference Comment
Deltar373.1 ± 2.2kcal/molH-TSBrinkman, Berger, et al., 1994gas phase
Deltar377.0 ± 4.0kcal/molIMRBDamrauer, Kass, et al., 1988gas phase; Between furan and methanol.

C2H7Si- + Hydrogen cation = Silane, dimethyl-

By formula: C2H7Si- + H+ = C2H8Si

Quantity Value Units Method Reference Comment
Deltar392.8 ± 6.1kcal/molG+TSDamrauer, Kass, et al., 1988gas phase; Between Me2NH and fluorobenzene
Quantity Value Units Method Reference Comment
Deltar384.0 ± 6.0kcal/molIMRBDamrauer, Kass, et al., 1988gas phase; Between Me2NH and fluorobenzene

Gas phase ion energetics data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
LL - Sharon G. Lias and Joel F. Liebman
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

View reactions leading to C2H8Si+ (ion structure unspecified)

Ionization energy determinations

IE (eV) Method Reference Comment
10.3PEPotzinger, Ritter, et al., 1975LLK
11.2PERoberge, Sandorfy, et al., 1978Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH3Si+14.0?EILango, Szepes, et al., 1984LBLHLM
CH3Si+14.00 ± 0.15?EIPotzinger and Lampe, 1970RDSH
CH4Si+10.63 ± 0.03CH4PIShin, Corderman, et al., 1990LL
CH4Si+11.0CH3+H/CH4EILango, Szepes, et al., 1984LBLHLM
CH4Si+11.1 ± 0.1CH4EIPotzinger, Ritter, et al., 1975LLK
CH4Si+10.85 ± 0.05?EIPotzinger and Lampe, 1970RDSH
CH5Si+11.5CH3EILango, Szepes, et al., 1984LBLHLM
CH5Si+11.5 ± 0.1CH3EIPotzinger, Ritter, et al., 1975LLK
CH5Si+11.51 ± 0.05CH3EIPotzinger and Lampe, 1970RDSH
C2H6Si+10.41 ± 0.03H2PIShin, Corderman, et al., 1990LL
C2H6Si+10.9H2EILango, Szepes, et al., 1984LBLHLM
C2H6Si+10.7 ± 0.1H2EIPotzinger, Ritter, et al., 1975LLK
C2H6Si+10.71 ± 0.05H2EIPotzinger and Lampe, 1970RDSH
C2H7Si+10.78 ± 0.05HPIShin, Corderman, et al., 1990LL
C2H7Si+11.1HEILango, Szepes, et al., 1984LBLHLM
C2H7Si+11.1 ± 0.1HEIPotzinger, Ritter, et al., 1975LLK
C2H7Si+11.12 ± 0.05HEIPotzinger and Lampe, 1970RDSH
C2H7Si+11.94 ± 0.04HEIHess, Lampe, et al., 1965RDSH
C2H8Si+10.7?EILango, Szepes, et al., 1984LBLHLM
Si+14.5?EILango, Szepes, et al., 1984LBLHLM

De-protonation reactions

C2H7Si- + Hydrogen cation = Silane, dimethyl-

By formula: C2H7Si- + H+ = C2H8Si

Quantity Value Units Method Reference Comment
Deltar380.9 ± 2.1kcal/molD-EABrinkman, Berger, et al., 1994gas phase; B
Deltar384.7 ± 4.1kcal/molG+TSDamrauer, Kass, et al., 1988gas phase; Between furan and methanol.; B
Quantity Value Units Method Reference Comment
Deltar373.1 ± 2.2kcal/molH-TSBrinkman, Berger, et al., 1994gas phase; B
Deltar377.0 ± 4.0kcal/molIMRBDamrauer, Kass, et al., 1988gas phase; Between furan and methanol.; B

C2H7Si- + Hydrogen cation = Silane, dimethyl-

By formula: C2H7Si- + H+ = C2H8Si

Quantity Value Units Method Reference Comment
Deltar392.8 ± 6.1kcal/molG+TSDamrauer, Kass, et al., 1988gas phase; Between Me2NH and fluorobenzene; B
Quantity Value Units Method Reference Comment
Deltar384.0 ± 6.0kcal/molIMRBDamrauer, Kass, et al., 1988gas phase; Between Me2NH and fluorobenzene; B

Mass spectrum (electron ionization)

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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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Mass 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 158

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Gas Chromatography

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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

Normal alkane RI, non-polar column, temperature ramp

View large format table.

Column type Active phase I Reference Comment
CapillarySqualane300.Szekely, Nefedov, et al., 1967Nitrogen, 5. K/min; Column length: 50. m; Column diameter: 0.25 mm; Tstart: 60. C; Tend: 250. C

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Gas Chromatography, NIST Free Links, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Brinkman, Berger, et al., 1994
Brinkman, E.A.; Berger, S.; Brauman, J.I., alpha-Silyl-substituent stabilization of carbanions and silyl anions, J. Am. Chem. Soc., 1994, 116, 18, 8304, https://doi.org/10.1021/ja00097a042 . [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]

Potzinger, Ritter, et al., 1975
Potzinger, P.; Ritter, A.; Krause, J., Massenspektrometrische Bestimmung von Bindungsenergien in siliciumorganischen Verbindungen, Z. Naturforsch. A:, 1975, 30, 347. [all data]

Roberge, Sandorfy, et al., 1978
Roberge, R.; Sandorfy, C.; Matthews, J.I.; Strausz, O.P., The far ultraviolet HeI photoelectron spectra of alkyl and fluorine substituted silane derivatives, J. Chem. Phys., 1978, 69, 5105. [all data]

Lango, Szepes, et al., 1984
Lango, J.; Szepes, L.; Csaszar, P.; Innorta, G., Studies on the unimolecular decomposition processes of organometallic ions, J. Organomet. Chem., 1984, 269, 133. [all data]

Potzinger and Lampe, 1970
Potzinger, P.; Lampe, F.W., Thermochemistry of simple alkylsilanes, J. Phys. Chem., 1970, 74, 719. [all data]

Shin, Corderman, et al., 1990
Shin, S.K.; Corderman, R.R.; Beauchamp, J.L., Photoionization mass spectrometric studies of the methylsilanes Si(CH3)nH4-n (n = 0-3), Int. J. Mass Spectrom. Ion Processes, 1990, 101, 257. [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]

Szekely, Nefedov, et al., 1967
Szekely, T.; Nefedov, O.M.; Garzo, G.; Shiryayav, V.I.; Fritz, D., Gas chromatographic investigation of the thermal decomposition of polydimethylsilylene, Acta Chim. Acad. Sci. Hung., 1967, 54, 3-4, 241-254. [all data]


Notes

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