Study of the Rotational Structure of the Forbidden ν 8 Band of the C2H2D2-CIS Molecule

The spectrum of the cis-ethylene-d2 (C2H2D2-cis) molecule is recorded with a Bruker IFS 120 HR Fourier spectrometer in the region of 600–1200 cm–1 with spectral resolution of 0.0021 cm–1. As a result of analysis of the experimental spectrum, 36 transitions are first assigned, based on which seven up...

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Bibliographic Details
Published in:Russian physics journal 2018-01, Vol.60 (9), p.1644-1649
Main Author: Konova, Yu V
Format: Article
Language:English
Subjects:
Coriolis force
Energy levels
Spectral resolution
Online Access:Get full text
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Summary:The spectrum of the cis-ethylene-d2 (C2H2D2-cis) molecule is recorded with a Bruker IFS 120 HR Fourier spectrometer in the region of 600–1200 cm–1 with spectral resolution of 0.0021 cm–1. As a result of analysis of the experimental spectrum, 36 transitions are first assigned, based on which seven upper energy levels of the state (ν8 = 1) are determined. The ν8 band is symmetry-forbidden, and its transitions appear in the IR spectrum only due to the strong c-type Coriolis interaction between the states (ν8 = 1) and (ν7 = 1). The parameters describing the rotational structure of the ν8 band are obtained.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-018-1263-3