Methane, dibromo-
- Formula: CH2Br2
- Molecular weight: 173.835
- IUPAC Standard InChI: InChI=1S/CH2Br2/c2-1-3/h1H2
- IUPAC Standard InChIKey: FJBFPHVGVWTDIP-UHFFFAOYSA-N
- CAS Registry Number: 74-95-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Dibromomethane; Methylene bromide; Methylene dibromide; CH2Br2; Rcra waste number U068; UN 2664
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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 | 3009 | C | 3009 W | gas | 3008 | gas | ||
| a1 | 2 | CH2 scis | 1382 | C | 1382 VW | gas | 1402 | gas | ||
| a1 | 3 | CBr2 s-str | 588 | C | 588 M | gas | 584 | gas | ||
| a1 | 4 | CBr2 scis | 169 | C | 169 | gas | ||||
| a2 | 5 | CH2 twist | 1095 | D | ia | 1095 | liq. | |||
| b1 | 6 | CH2 a-str | 3073 | B | 3073 VW | gas | 3064 | liq. | ||
| b1 | 7 | CH2 rock | 812 | B | 812 M | gas | 813 | liq. | ||
| b2 | 8 | CH2 wag | 1195 | B | 1195 VS | gas | 1195 | liq. | ||
| b2 | 9 | CBr a-str | 653 | B | 653 VS | gas | 640 | gas | ||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| M | Medium |
| W | Weak |
| VW | Very weak |
| ia | Inactive |
| B | 1~3 cm-1 uncertainty |
| 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 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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