ORGANOPHOSPHAZENES - 23 - THE REACTIONS OF (4-(ALPHA-METHYLETHENYL)PHENYL, NYLETHYNYL)TETRA-FLUOROCYCLOTRIPHOSPHAZENE-STYRENE COPOLYMERS WITH DICOBALT OCTACARBONYL

The geminal and nongeminal isomers of N3P3F4(C=CC6H5)C6H4C(CH3)-=CH2 u ndergo radical addition polymerization with styrene to produce copolym ers having pendant cyclophosphazenes containing a phenylethynl substit uent. Reactions of the copolymer derived from the non-geminal phosphaz ene derivative with dicobalt octacarbonyl leads to formation of an org anometallic cluster, -C=CC6H5. Co-2(CO)(6), as a phosphazene substitue nt. The redox active nature of the copolymer with the organometallic s ubstituent was confirmed by observation of a one electron reversible r eduction using cyclic voltametry. TGA studies suggest that the free al kyne substituent contributes to cross-linking in thermal degradation p rocesses.