Infrared intensities and Coriolis interactions in ethylene

The infrared band intensities of ethylene and ethylene-d4 were measured in the gas phase using the pressure broadening method. From the analyses of Coriolis interactions between ν7 and ν10 and between ν7 and ν12, the relative signs of (∂p/∂Q7), (∂p/∂Q10), and (∂p/∂Q12) have been determined. The obta...

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Bibliographic Details
Published in:The Journal of chemical physics 1979-01, Vol.70 (5), p.2471-2478
Main Authors: Nakanaga, Taisuke, Kondo, Shigeo, Saëki, Shinnosuke
Format: Article
Language:English
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Summary:The infrared band intensities of ethylene and ethylene-d4 were measured in the gas phase using the pressure broadening method. From the analyses of Coriolis interactions between ν7 and ν10 and between ν7 and ν12, the relative signs of (∂p/∂Q7), (∂p/∂Q10), and (∂p/∂Q12) have been determined. The obtained band intensities were analyzed by the least squares method with the aid of the results from Coriolis analyses and CNDO/2 calculations. The correct sign combination of (∂p/∂Qi) have successfully been determined. The resulting values of the intensity parameters (∂p/∂Sj) are found consistent with the empirical rule for the sense of the dipole moment derivatives.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.437709