Knowledge Bank

At the 1957 session of the Symposium on Molecular Structure and Spectroscopy, Guenther, Wiggins, and $Rank1$ presented a detailed analysis of the $3\nu 3$ and $\nu 2+3\nu 3-\nu 2$ bands of ordinary carbon disulfide. Further analysis of the original spectra has made it possible to evaluate the molecular constants of the $3\nu a$ band of the isotopic molecule $C12S32S34$. It is believed that this is the first resolution and analysis of the rotational structure of $C12S32S34$ in the infra-red region. The results are consistent with the relations governing the effect of isotopic substitution on the molecular consistent. The values obtained in $cm-1$ are: \begin{eqnarray*} B^{\prime}+B""""=0.20970_2\quad\alpha\quad=0.00069_{1}\ B^{\prime}+B^{\prime}=0.00207_3\quad\nu_0\quad=4556.553\ B^{\prime}\quad=0.10381_{4}\quad D^{\prime}=D^{\prime\prime}=\frac{4B_{0}^{3}}{({\omega_{10}^{0}})}^{2} =1.12\times10^{-8}\ B"""" \quad=0.10588_{7}\quad r_{0}\quad=1.554_{4}\times 10^{-8}cm.\end{eqnarray*}""