Silane, trimethyl-
- Formula: C3H10Si
- Molecular weight: 74.1970
- IUPAC Standard InChIKey: PQDJYEQOELDLCP-UHFFFAOYSA-N
- CAS Registry Number: 993-07-7
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Trimethylsilane; 2-Methyl-2-silapropane; (CH3)3SiH
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Gas phase ion energetics data
Go To: Top, References, Notes
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
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
LL - Sharon G. Lias and Joel F. Liebman
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.9 | PE | Potzinger, Ritter, et al., 1975 | LLK |
10.11 | PI | Connor, Haszeldine, et al., 1967 | RDSH |
9.8 ± 0.3 | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
10.8 | PE | Roberge, Sandorfy, et al., 1978 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
CHSi+ | 11.7 ± 0.5 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
CH2Si+ | 10.6 ± 0.3 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
CH3+ | 14.8 ± 0.5 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
CH3Si+ | 13.40 ± 0.10 | ? | EI | Potzinger and Lampe, 1970 | RDSH |
CH3Si+ | 12.4 ± 0.3 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
CH4Si+ | 11.0 ± 0.3 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
CH5Si+ | 12.8 ± 0.5 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
C2H3+ | 15.3 ± 0.5 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
C2H6Si+ | 10.03 ± 0.05 | CH4 | PI | Shin, Corderman, et al., 1990 | LL |
C2H6Si+ | 10.5 ± 0.1 | CH4 | EI | Potzinger, Ritter, et al., 1975 | LLK |
C2H6Si+ | 10.50 ± 0.05 | ? | EI | Potzinger and Lampe, 1970 | RDSH |
C2H6Si+ | 10.3 ± 0.2 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
C2H7Si+ | 10.71 ± 0.05 | CH3 | PI | Shin, Corderman, et al., 1990 | LL |
C2H7Si+ | 10.9 ± 0.1 | CH3 | EI | Potzinger, Ritter, et al., 1975 | LLK |
C2H7Si+ | 10.91 ± 0.05 | CH3 | EI | Potzinger and Lampe, 1970 | RDSH |
C2H7Si+ | 11.70 ± 0.06 | CH3 | EI | Hess, Lampe, et al., 1965 | RDSH |
C3H9Si+ | 10.24 ± 0.05 | H | PI | Shin, Corderman, et al., 1990 | LL |
C3H9Si+ | 10.5 ± 0.1 | H | EI | Potzinger, Ritter, et al., 1975 | LLK |
C3H9Si+ | 10.52 ± 0.05 | H | EI | Potzinger and Lampe, 1970 | RDSH |
C3H9Si+ | 10.6 ± 0.1 | H | EI | Band, Davidson, et al., Commun. 1967 | RDSH |
C3H9Si+ | 10.7 ± 0.1 | H | EI | Connor, Finney, et al., 1966 | RDSH |
C3H9Si+ | 10.78 ± 0.07 | H | EI | Hess, Lampe, et al., 1964 | RDSH |
SiH+ | 14.2 ± 0.2 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
SiH3+ | 14.3 ± 0.5 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
Si+ | 13.7 ± 0.3 | ? | EI | Hobrock and Kiser, 1962 | Personal communication from R.M. Reese and V.H. Dibeler; RDSH |
De-protonation reactions
C3H9Si- + =
By formula: C3H9Si- + H+ = C3H10Si
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1614. ± 9.2 | kJ/mol | D-EA | Wetzel, Salomon, et al., 1989 | gas phase; B |
ΔrH° | 1607. ± 17. | kJ/mol | G+TS | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol.; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1584. ± 9.6 | kJ/mol | H-TS | Wetzel, Salomon, et al., 1989 | gas phase; B |
ΔrG° | 1577. ± 17. | kJ/mol | IMRB | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol.; B |
ΔrG° | 1565. ± 13. | kJ/mol | IMRB | Grimm and Bartmess, 1992 | gas phase; B |
ΔrG° | >1569. ± 13. | kJ/mol | IMRB | Wetzel, Salomon, et al., 1989 | gas phase; B |
References
Go To: Top, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Connor, Haszeldine, et al., 1967
Connor, J.A.; Haszeldine, R.N.; Leigh, G.J.; Sedgwick, R.D.,
Organosilicon chemistry. Part II. The thermal decomposition of hexamethyldisilane, the Me3Si-SiMe3 bond dissociation energy, and the ionisation potential of the trimethylsilyl radical,
J. Chem. Soc. A, 1967, 768. [all data]
Hobrock and Kiser, 1962
Hobrock, B.G.; Kiser, R.W.,
Electron impact spectroscopy of tetramethylgermanium, trimethylsilane, and dimethylmercury,
J. Phys. Chem., 1962, 66, 155. [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]
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]
Band, Davidson, et al., Commun. 1967
Band, S.J.; Davidson, I.M.T.; Lambert, C.A.; Stephenson, I.L.,
Bond dissociation energies and heats of formation of trimethylsilyl compounds,
Chem., Commun. 1967, 723. [all data]
Connor, Finney, et al., 1966
Connor, J.A.; Finney, G.; Leigh, G.J.; Haszeldine, R.N.; Robinson, P.J.; Sedgwick, R.D.; Simmons, R.F.,
Bond dissociation energies in organosilicon compounds,
Chem. Commun., 1966, 178. [all data]
Hess, Lampe, et al., 1964
Hess, G.G.; Lampe, F.W.; Sommer, L.H.,
Bond dissociation energies and ion energetics in organosilicon compounds by electron impact,
J. Am. Chem. Soc., 1964, 86, 3174. [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]
Grimm and Bartmess, 1992
Grimm, D.T.; Bartmess, J.E.,
The Intrinsic (Gas Phase) Basicity of some Anions Commonly Used in Condensed-Phase Synthesis,
J. Am. Chem. Soc., 1992, 114, 4, 1227, https://doi.org/10.1021/ja00030a016
. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy 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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