The following rotational spectra of carbonyl sulfide have been accurately remeasured with a beam-absorption spectrometer: 16O12C32S in the vibrational ground state and in the vibrational state 0 11 0. 16O12C34S in the vibrational ground state. The ground state spectra of the following isotopic species have been measured with a video spectrometer: 17O12C32S, 18O12C32S, 16O13C32S, 16O12C33S, 16O12C36S, and 16O13C34S. Our measurements have enabled us to improve the molecular constants notably for these cases.
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Dubrulle et al. (1980) studied this question.