Knowledge Bank

Small linear carbon-sulfur clusters have been generated by laser ablation of a pellet of mixed $\mathrm{<mrow\; data-mjx-texclass="ORD">12<mrow\; data-mjx-texclass="ORD">/</mrow>13</mrow>}C$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">32</mrow>}S$ and trapped on 12K cryostat window with Ar gas access. Isotopically-labelled Fourier transform infrared absorption spectra $(0.25cm-1$ resolution) were obtained for many carbon-sulfur clusters. Using a B3LYP/6-$311G\ast$ density functional approach, theoretical calculations were performed to support the experimental band assignments for the asymmetric stretching modes of the $CnS$ and $SCnS$ clusters. The band assignment analysis for the $C4S$ and $C7S$ clusters will be presented.