The reaction of the newly synthesized aqua complex [Pt (terpy)(OH)][BF] with-methyl 3-acyl- 2-methyldithiocarbazates under a variety of experimental conditions has been studied. Using a 2∶ 1 metal to ligand ratio in methanol, a platinum assisted cyclization was observed. The reaction products were Δ-1, 3, 4-oxadiazolin