(2H4)methane
- Formula: CD4
- Molecular weight: 20.0671
- CAS Registry Number: 558-20-3
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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: Td Symmetry Number σ = 12
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | Sym str | 2109 | B | ia | 2108.9 | gas | |||
| e | 2 | Deg deform | 1092 | B | 1092 ia | gas | 1091.9 | gas | Observed through Coriolis interaction with ν4 | |
| f2 | 3 | Deg str | 2259 | A | 2259.3 | gas | 2259.3 | gas | ||
| f2 | 4 | Deg deform | 996 | B | 996.0 | gas | ||||
Source: Shimanouchi, 1972
Notes
| ia | Inactive |
| A | 0~1 cm-1 uncertainty |
| B | 1~3 cm-1 uncertainty |
References
Go To: Top, Vibrational and/or electronic energy levels, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Shimanouchi, 1972
Shimanouchi, T.,
Tables of Molecular Vibrational Frequencies Consolidated Volume I, National Bureau of Standards, 1972, 1-160. [all data]
Notes
Go To: Top, Vibrational and/or electronic energy levels, References
- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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