[2H4]ethylene
- Formula: C2D4
- Molecular weight: 32.0778
- CAS Registry Number: 683-73-8
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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: D2h Symmetry Number σ = 4
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| ag | 1 | CD2 s-str | 2251 | C | ia | 2251 VS | liq. | |||
| ag | 2 | CC str | 1515 | C | ia | 1515 VS | liq. | |||
| ag | 3 | CD2 scis | 981 | C | ia | 981 M | liq. | |||
| au | 4 | CD2 twist | 728 | E | ia | ia | CF | |||
| b1g | 5 | CD2 a-str | 2304 | C | ia | 2304 W | liq. | |||
| b1g | 6 | CD2 rock | 1009 | E | ia | OC(ν6+ν10) | ||||
| b1u | 7 | CD2 wag | 720 | B | 720.0 VS | gas | ia | |||
| b2g | 8 | CD2 wag | 780 | C | ia | 780 W | liq. | |||
| b2u | 9 | CD a-str | 2345 | C | 2345 S | gas | ia | |||
| b2u | 10 | CD2 rock | 586 | E | ia | CF. From product rule. | ||||
| b3u | 11 | CD2 a-str | 2200 | C | 2200.2 S | gas | ia | |||
| b3u | 12 | CD2 scis | 1078 | C | 1077.9 S | gas | ia | |||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| S | Strong |
| M | Medium |
| W | Weak |
| ia | Inactive |
| OC | Frequency estimated from an overtone or a combination tone indicated in the parentheses. |
| CF | Calculated frequency |
| B | 1~3 cm-1 uncertainty |
| C | 3~6 cm-1 uncertainty |
| E | 15~30 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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