The infrared spectrum of carbon suboxide in the ν6 fundamental region: Experimental observation and semirigid bender analysis
Abstract
The infrared spectrum of carbon suboxide, C 3O 2, was measured at high resolution in the region from 500 to 600 cm -1. The spectrum was recorded with a Bomem interferometer at a resolution of about 0.004 cm -1; after deconvolution a resolution of about 0.002 cm -1 was attained. Seven bands were identified and assigned to rovibrational transitions of 12C 316O 2. These consist of the ν6 fundamental band and some of the hot bands associated with the ν7, 2 ν7, and 3 ν7 states. The data obtained on the ν6 + nν7 states were used as input for a semirigid bender fit yielding the effective CCC bending potential energy function in the ν6 state together with a number of related parameters. From the results of the present work together with the results of previous semirigid bender fits it was found that C 3O 2 is bent at equilibrium with an equilibrium CCC bond angle of 156° and a barrier to linearity of 28 cm -1.
- Publication:
-
Journal of Molecular Spectroscopy
- Pub Date:
- July 1986
- DOI:
- 10.1016/0022-2852(86)90239-0
- Bibcode:
- 1986JMoSp.118..248J