The reaction of N-methylbenzothiazole-2-selone and 1,1-dimethylselenourea with sulfuryl chloride and dichlorine

The reactions of N-methylbenzothiazole-2-selone, mbts, and 1,1-dimethylsele nourea, dmsu, with dichlorine and the chlorinating agent SO2Cl2 have been i nvestigated. In the 1:1 reactions spectroscopic evidence for the formation of 1:1 selenoamide . Cl-2 adducts was obtained; unfortunately, crystallisat ion attempts have so far been unsuccessful. A single crystal X-ray diffract ion was performed, however, on an ionic minor product from the reaction of mbts with one equivalent of SO2Cl2. When two equivalents of SO2Cl2 or an ex cess of dichlorine gas were treated with mbts or dmsu a variety of ionic pr oducts were obtained, the exact nature of which varied depending upon which chlorinating agent is used, the identity of the selenoamide and the stoich iometry of the reactants. The reactions are therefore complicated and, in m ost cases, several products are obtained from a given reaction. This study represents the first reported reactions of selenoamides with chlorinating a gents and two new selenium-chlorine binary anions have been crystallographi cally characterised for the first time, namely Se2Cl42- and SeCl62-.