The electroreduction of alkylaryldichlorosilane carried out with Mg cathode and anode in a single compartment cell gave high molecular weight poly(alkylarylsilane) (M(n) = 5200-31000, M(w)/M(n) = 1.4-1.8) in 5-79% yield. The effects of electrode material, monomer concentration, amount of supplied electricity, and ultrasound were investigated. This electroreductive method was also successfully applied to the synthesis of polygermanes, silane-geramane copolymers, and also poly[p-(disilanylene)phenylenes].

Electroreduction of dichlorosilanes, such as 1 ,I -dichlorodialkylsilanes, I ,2-dichlorotetra-alkyldisilanes, and 1,4-bis(chlorodialkylsilyl)benzenes, with M g electrodes in a single-compartment cell was found to yield the corresponding polysi lanes.We report our new findings that the electroreduction of as 1,l-dichlorosilanes ,I 1,2-dichlorodisilanes,2 and bis(ch1orochlorosilanes with an Mg anode and cathode is effective for silyl)benzenes,3,4 yielded the corresponding polysilanes.1 the formation of Si-Si bonds. The electroreduction of Other metal electrodes were less effective (Pt, Zn, Ni, and trialkylchlorosilanes with Mg electrodes gave disilanes in Cu), The products contained < 2% of the corresponding excellent isolated yields (Scheme 1) , and dichlorosilanes such siloxane.

The electroreduction of organochlorosilanes was carried out by using magnesium cathode and anode in a single compartment cell affording oligosilanes, polysilanes, and polycarbosilanes. The electroreductive coupling of organochlorosilanes gave the corresponding disilanes in high yield.

No abstract

No abstract