Silane, trideutero-(methyl)-
- Formula: CH3D3Si
- Molecular weight: 49.1623
- CAS Registry Number: 1066-43-9
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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:
LL - Sharon G. Lias and Joel F. Liebman
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| CH2DSi+ | 11.4 | ? | EI | Bradshaw, Moyes, et al., 1976 | LLK |
| CH2D2Si+ | 11.4 | H,D | EI | Bradshaw, Moyes, et al., 1976 | LLK |
| CH3DSi+ | 10.99 ± 0.03 | D2 | PI | Shin, Corderman, et al., 1990 | LL |
| CH3DSi+ | 11.5 | 2D | EI | Bradshaw, Moyes, et al., 1976 | LLK |
| CH3D2Si+ | 10.9 ± 0.1 | D- | PI | Shin, Corderman, et al., 1990 | LL |
| CH3D2Si+ | 11.8 | D | EI | Bradshaw, Moyes, et al., 1976 | LLK |
| CH3Si+ | 12.1 | ? | EI | Bradshaw, Moyes, et al., 1976 | LLK |
| D2Si+ | 11.40 ± 0.03 | CH3D | PI | Shin, Corderman, et al., 1990 | LL |
| D2Si+ | 11.6 | ? | EI | Bradshaw, Moyes, et al., 1976 | LLK |
| D3Si+ | 12.4 | ? | EI | Bradshaw, Moyes, et al., 1976 | LLK |
| Si+ | 11.8 | ? | EI | Bradshaw, Moyes, et al., 1976 | LLK |
Vibrational and/or electronic energy levels
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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: Takehiko Shimanouchi
Symmetry: C3ν Symmetry Number σ = 3
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | CH3 s-str | 2923 | A | 2923.4 M | gas | ||||
| a1 | 2 | SiD3 s-str | 1558 | C | 1558 M | gas | ||||
| a1 | 3 | CH3 s-deform | 1262 | C | 1262 S | gas | ||||
| a1 | 4 | Csi str | 741 | C | 741 VS | gas | ||||
| a1 | 5 | SiD3 s-deform | 652 | C | 652 S | gas | ||||
| a2 | 6 | Torsion | 172 | D | ia | ν172.1νA) MW. ν171.9νE) | ||||
| e | 7 | CH3 d-str | 2982 | A | 2981.8 M | gas | ||||
| e | 8 | SiD3 d-str | 1577 | C | 1577 VS | gas | ||||
| e | 9 | CH3 d-deform | 1401 | C | 1401 M | gas | ||||
| e | 10 | CH3 rock | 825 | C | 825 S | gas | ||||
| e | 11 | SiD3 d-deform | 668 | C | 668 S | gas | ||||
| e | 12 | SiD3 rock | 433 | C | 433 | gas | ||||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| S | Strong |
| M | Medium |
| ia | Inactive |
| MW | Torsional Frequency calculated from microwave spectroscopic data. |
| A | 0~1 cm-1 uncertainty |
| C | 3~6 cm-1 uncertainty |
| D | 6~15 cm-1 uncertainty |
References
Go To: Top, Gas phase ion energetics data, Vibrational and/or electronic energy levels, NIST Free Links, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Bradshaw, Moyes, et al., 1976
Bradshaw, D.I.; Moyes, R.B.; Wells, P.B.,
Mass spectra of some deuterium-labelled methylsilanes the analysis of mixtures,
Can. J. Chem., 1976, 54, 599. [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]
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume II,
J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [all data]
Notes
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- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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