METAL-CONTAINING POLYMERS SYNTHESIZED VIA ACYCLIC DIENE METATHESIS - POLYCARBOSTANNANES

Polycarbostannanes have been successfully synthesized via acyclic dien e metathesis chemistry utilizing both a well-defined molybdenum akylid ene and an aryloxo tungsten ''classical'' catalyst system. In the case of the well-defined catalyst, the polymerization proceeds smoothly to produce linear polymer which is characterized by proton, carbon, and tin NMR. Molecular weights of about 16000 g/mol can be produced. The p roduction of a polycarbostannane via classical metathesis chemistry is just as facile, producing molecular weights comparable to the well-de fined system, and in this case, the monomer performs as both the monom er and the cocatalyst species.