Knowledge Bank

The previous rovibrational analysis of the OCS was baaed only on Che energies and the rotational constants. We propose a least squares analysis on all the microwave and infrared measurements: we select experimental frequencies for a few J values and we use them directly as experimental data. This analysis has been applied, to the principal isotopic species of carbonyl sulphide $(16O12C32S$, $\mathrm{<mrow\; data-mjx-texclass="ORD">18</mrow>}O12C32S$, and $\mathrm{<mrow\; data-mjx-texclass="ORD">16</mrow>}O13C32S)$, and yields more precise parameters than previously possible. Finally, we propose a molecular geometry for OCS.