Gas-phase reactions of tetrachlorogermane with chlorothiophenes in the presence of hexachlorodisilane. Synthesis of thienylchlorogermanes

Gas-phase reactions of dichlorogermylenes formed in the GeCl4-Si2Cl6 system with 2-chlorothiophene, 2,5-dichlorothiophene, 2,5-dichloro-3-methylthiophene, and 5-chloro-2-trimethylsilylthiophene is studied. It is shown that :GeCl2 is inserted into the chlorothiophene C-Cl bond to form the derivatives containing one or two trichlorogermyl groups. In the reaction with 5-chloro-2-trimethylsilylthiophene, the insertion of :GeCl2 into the C-Cl bond yielding 5-trichlorogermyl-2-trimethylsilylthiophene is accompanied by the exchange of the Me3Si group with the trichlorogermyl group to form 2,5-bis(trichlorogermyl)thiophene. The reactions occurring in the course of the synthesis of thienylchlorogermanes are considered.