was synthesized through coupling of dimethylsilicondichloride with α-chloroallyl-magnesium chloride in tetrahydrofuran with 84 % yield. It was then polymerized with ABN
but not with BPO
at rather low temperature (60? to a white powder polymer with softening range of 80-100°. The structure of polymer was elucidated primarily through IR spectra to be the ladder type cyclo-polymer.