Knowledge Bank

During a recent spectroscopic study of $CdCH3$, in which this radical was prepared in a free jet expansion by laser photolysis of $Cd(CH3)2$, weak bands were found to be present adjacent to $CdCH3$ vibrunic features which were attributed to clusters of the type $X-CdCH3$ where X represents an inert gas $atom.1$ We have successfully recorded laser excitation spectra for the cases where X = He, Ne, Ar, Kr, Xe. The $A¯-X¯$ electronic origins of these clusters have been determined and all are found to be blue-shifted with respect to the $A¯-X¯O00$ band of $CdCH3$. Furthermore, vibrational structure has been resolved in the spectra of $He-CdCH3$, $Ne-CdCH3$, $ Ar-CdCH_{3}$, and $Kr-CdCH3$. We will discuss this vibrational structure and will also present preliminary results from a study of the $H2-CdCH3$ cluster.