SYNTHESIS AND STRUCTURE OF NOVEL GERMANIUM-CONTAINING CYCLIC POLYSULFIDES

Novel germanium-containing cyclic polysulfides 1,2,3,4,5-tetrathiagerm olane 5 (Tbt(Ar)GeS4; Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]pheny l; Ar = mesityl, 2,6-diethylphenyl, 2,4,6-triisopropylphenyl) have bee n synthesized, and the molecular structure of Tbt(Mes)GeS4 was determi ned by X-ray crystallographic analysis. Reaction of the tetrathiagermo lanes 5 with diphenyldiazomethane gave 1,2,3,5-tetrathia-4-germacyclop entanes 10, 1,2,4,5-tetrathia-3-germacyclohexanes 11, and 1,2,4-trithi a-3-germacyclopentanes 12. The structure of 1,2,3,5-tetrathia-4-germac yclohexane 10a was determined by X-ray structural analysis.