Methane, dibromodifluoro-
- Formula: CBr2F2
- Molecular weight: 209.816
- IUPAC Standard InChI: InChI=1S/CBr2F2/c2-1(3,4)5
- IUPAC Standard InChIKey: AZSZCFSOHXEJQE-UHFFFAOYSA-N
- CAS Registry Number: 75-61-6
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Dibromodifluoromethane; Difluorodibromomethane; Freon 12-B2; Halon 1202; CF2Br2; UN 1941
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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 | CF2 s-str | 1090 | C | 1090 | gas | 1077 W p | liq. | ||
| a1 | 2 | CF2 scis | 623 | C | 623 | gas | 624 W p | liq. | ||
| a1 | 3 | CBr2 s-str | 140 | D | 340 S p | liq. | ||||
| a1 | 4 | CBr2 scis | 168 | D | 168 M p | liq. | ||||
| a2 | 5 | CF2 twist | 281 | D | ia | 281 W dp | liq. | |||
| b1 | 6 | CF2 a-str | 1153 | C | 1153 VS | gas | 1141 VW dp | liq. | ||
| b1 | 7 | CF2 rock | 369 | D | 369 VW dp | liq. | ||||
| b2 | 8 | CBr2 a-str | 831 | C | 831 VS | gas | 816 W dp | liq. | ||
| b2 | 9 | CF2 wag | 325 | D | 325 VW dp | liq. | ||||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| S | Strong |
| M | Medium |
| W | Weak |
| VW | Very weak |
| ia | Inactive |
| p | Polarized |
| dp | Depolarized |
| C | 3~6 cm-1 uncertainty |
| D | 6~15 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 II,
J. Phys. Chem. Ref. Data, 1972, 6, 3, 993-1102. [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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