Centrifugal distortion constants and force field of HClCO |
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Authors: | Masao Suzuki Koichi Yamada Michio Takami |
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Affiliation: | Department of Electronic Engineering, Tokyo Institute of Polytechnics, Iyama 1583, Atsugi 243-02, Japan;Erstes Physikalisches Institut, Universität zu Köln, D-5000 Cologne 41, West Germany;The Institute of Physical and Chemical Research, Wako, Saitama 351, Japan |
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Abstract: | Measurement of the a- and b-type rotational transitions of formyl chloride, HClCO, was extended up to J = 50 and ka = 5 ← 4 in the frequency range of 8 to 200 GHz. Accurate rotational parameters including the sextic centrifugal distortion constants were determined from the observed spectrum for the 35Cl and 37Cl species. The τ defect in the planarity relations of the quartic centrifugal distortion constants was found to be negligibly small. From the quartic centrifugal distortion constants and the previously reported fundamental vibrational frequencies, force constants of formyl chloride were calculated by assuming the Urey-Bradley force field. |
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