Methane-d2
- Formula: CH2D2
- Molecular weight: 18.0548
- CAS Registry Number: 676-55-1
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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: C2ν Symmetry Number σ = 2
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| a1 | 1 | CH2 s-str | 2974 | C | 2976 M | gas | 2974 | gas | ||
| a1 | 2 | CD2 s-str | 2202 | C | 2202 W | gas | ||||
| a1 | 3 | CH2 scis | 1436 | C | 1436 W | gas | ||||
| a1 | 4 | CD2 scis | 1033 | C | 1033 S | gas | 1034 | gas | ||
| a2 | 5 | CH2 twist | 1333 | C | 1329 W ia | gas | 1333 | gas | Observed through Coriolis interaction with ν9 | |
| b1 | 6 | CH2 a-str | 3013 | C | 3013 S | gas | ||||
| b1 | 7 | CH2 rock | 1090 | C | 1090 S | gas | 1090 | gas | ||
| b2 | 8 | CD2 a-str | 2234 | C | 2234 M | gas | ||||
| b2 | 9 | CH2 wag | 1234 | C | 1234 M | gas | ||||
Source: Shimanouchi, 1972
Notes
| S | Strong |
| M | Medium |
| W | Weak |
| ia | Inactive |
| C | 3~6 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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