Novel zirconocene or hafnocene-containing silsesquioxanes with a vinyl grou
p Cp2M{[(vinyl)Me2Si](c-C5H9)(7)Si7O12} (Cp = cyclopentadienyl, M = Zr, Hf)
were synthesized, as well as a derivative with a trimethylsilyl group Cp2Z
r[(Me3Si)(c-C5H9)(7)Si7O12]. A derivative containing a dimethylethoxysilyl
group was also synthesized.