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.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 168–172, September, 2017.
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Konova, Y.V. Study of the Rotational Structure of the Forbidden ν8 Band of the C2H2D2-CIS Molecule. Russ Phys J 60, 1644–1649 (2018). https://doi.org/10.1007/s11182-018-1263-3
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DOI: https://doi.org/10.1007/s11182-018-1263-3