Abstract
The millimeter-wave spectrum of the cis conformer of disulfur dioxide, cis-OSSO, has been recorded in this study in the ranges 70–120GHz and 340–500GHz. Transitions of its second most abundant isotopologue, OS34SO, have also been observed. The species was produced in a radio frequency discharge through flowing SO2. An improved set of molecular parameters has been derived from the newly recorded data, allowing for accurate predictions throughout the millimeter-wave region and into the submillimeter-wave domain. Quantum-chemical calculations at the coupled-cluster level of theory have also been performed, providing an accurate set of structural parameters of this species for comparison with experimentally derived values.
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