Abstract
Dimethy11itanocene and dimethylzirconocene are very active catalysts for the dehdrogenative coupling of primary organosi1anes to polysilanes and of primary and secondary organo-germanes to po1ygermanes. Characterization of the polymers produced by these reactions will be described. The reasons for the unique catalytic activity of the Ti and Zr compounds and the failure of analogous metallocene derivatives of the other early transition groups to catalyze silane polymerization is discussed. The generality of dehydrogenative coupling as a route to new families of organometal1ic polymers is reviewed.
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