Knowledge Bank

The microwave spectrum of the reactive species thioformaldehyde ($H2CS$) has been investigated in the frequency range 3--70 GHz. A centrifugal distortion analysis has been completed for the species $H212C12S$ in the ground vibrational state and rotational constants have been obtained for the isotopic species $H213C12S$, $H212C14S$, and $D212C32S$. A variety of production systems will be discussed along with structual conclusions and possible astronomical implications.