Preparation of OC14S, O18CS, OCS33, and CH3Cl36

In connection with a microwave absorption study of the nuclear spins of isotopes by Professor A. Roberts, formerly of the Physics Department of this University, we were asked to prepare samples of OC14S, O18CS, OCS33, and of CH3Cl36, starting with small quantities of the materials containing the desired isotopes. We believe that the methods employed in the synthesis of these compounds may be of use to other investigators