Zur elektrochemischen Bildung von Di-, Oligo-und Polysilanen

摘要

The electrochemical reduction of halosilanes is presented as a new method for formation of SiSi-bonds. Cathodic reduction of triorganosilanes, usingDMEas solvent and tetrabutylammoniumperchlorate as supporting electrolyte, yields the corresponding disilanes in nearly quantitative current efficiency. In contrast, monochloropermethyldisilane and 1,2-dichlorper-methyldisilane do not react to tetrasilanes. Diphenyldichlorosilane gives the cyclic compound (SiPh2)4besides polymeric products. Trichloromethylsilane and silicontetrachloride react to yellow polymers. The possible reaction mechanisms is discussed.