B. Marciniec et al., Polycondensation vs. cyclization of divinylsubstituted silicon compounds catalyzed by transition metal complexes, MACRO SYMP, 174, 2001, pp. 137-144
In the presence of ruthenium complexes divinyldiorganosilicon compounds und
ergo de-ethenated coupling polycondensation yielding under optimum conditio
ns trans-tactic polysilylene(siloxylene, silazanylene)vinylenes and poly(si
lytene-arylene-vinylenes). Rhodium- ([RhX(cod)](2) X = Cl, OSiMe3) catalyze
d ring closure of oligomeric (dimeric, trimeric) products of intermolecular
condensation opens a new route to synthesizing organosilicon exo-cyclic me
thylenes. In the presence of Ru-complexes the cross-coupling (poly)condensa
tion of di- and trivinylsilicon monomers with organic dienes allows synthes
es of a series of linear and dendrimeric poly(arylene-silylene-vinylene)s.