Organophosphazenes. 23. The Reactions of (4-(α-Methylethenyl)phenyl, 2-Phenylethynyl)tetrafluorocyclotriphosphazene–Styrene Copolymers with Dicobalt Octacarbonyl

Abstract

The geminal and nongeminal isomers of N3P3F4(≡ CC6H5)C6H4C(CH3)=2 undergo radical addition polymerization with styrene to produce copolymers having pendant cyclophosphazenes containing a phenylethynl substituent. Reactions of the copolymer derived from the non-geminal phosphazene derivative with dicobalt octacarbonyl leads to formation of an organometallic cluster, -C ≡CC6H5·Co2(CO)6, as a phosphazene substituent. The redox active nature of the copolymer with the organometallic substituent was confirmed by observation of a one electron reversible reduction using cyclic voltametry. TGA studies suggest that the free alkyne substituent contributes to cross-linking in thermal degradation processes.