Acetylene, diiodo-
- Formula: C2I2
- Molecular weight: 277.8303
- IUPAC Standard InChI: InChI=1S/C2I2/c3-1-2-4
- IUPAC Standard InChIKey: XANKMCMFEJCODV-UHFFFAOYSA-N
- CAS Registry Number: 624-74-8
- Chemical structure:
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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: Dxh Symmetry Number σ = 2
| Sym. | No | Approximate | Selected Freq. | Infrared | Raman | Comments | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| Species | type of mode | Value | Rating | Value | Phase | Value | Phase | |||
| σg+ | 1 | CC str | 2118 | D | ia | 2118 VS p | solid solid | |||
| σg+ | 2 | CI str | 190 | D | ia | 190 S p | solid solid | |||
| σu+ | 3 | CI str | 720 | D | 720 VS | solid solid | ia | |||
| πg | 4 | CCI deform | 296 | D | ia | 296 VS dp | solid solid | |||
| πu | 5 | CCI deform | 132 | D | 132 M | solid solid | ia | |||
Source: Shimanouchi, 1972
Notes
| VS | Very strong |
| S | Strong |
| M | Medium |
| ia | Inactive |
| p | Polarized |
| dp | Depolarized |
| 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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