CHLORINATIVE CLEAVAGE OF PERMETHYLPOLYSILANES INITIATED BY PHOTO-INDUCED ELECTRON TRANSFER
Irradiation of dodecamethylcyclohexasilane (1) in CCl4–CH2Cl2 in the presence of 9,10-dicyanoanthracene (2) afforded 1,6-dichlorododecamethylhexasilane in 70% yield. Fluorescence of 2 was quenched by 1 with a diffusion-controlled rate. A mechanism of free-radical chlorination involving (1)\overset+· is proposed.