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
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
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° | 385.8 ± 2.2 | kcal/mol | D-EA | Wetzel, Salomon, et al., 1989 | gas phase; B |
ΔrH° | 384.1 ± 4.1 | kcal/mol | G+TS | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol.; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 378.6 ± 2.3 | kcal/mol | H-TS | Wetzel, Salomon, et al., 1989 | gas phase; B |
ΔrG° | 377.0 ± 4.0 | kcal/mol | IMRB | Damrauer, Kass, et al., 1988 | gas phase; Between furan and methanol.; B |
ΔrG° | 374.0 ± 3.0 | kcal/mol | IMRB | Grimm and Bartmess, 1992 | gas phase; B |
ΔrG° | >375.0 ± 3.0 | kcal/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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.