SYNTHESIS AND REACTIVITY OF METAL-CONTAINING MONOMERS .21. SYNTHESIS OF TICL4 AND VCL4 COMPLEXES WITH AZOBISISOBUTYRONITRILE AND STUDIES OFTHEIR THERMAL-DECOMPOSITION

Complexes of azobisisobutyronitrile (AIBN) with titanium tetrachloride and vanadium tetrachloride have been synthesized and characterized. I t was demonstrated that Ti(IV) and V(IV) form equimolar complexes with AIBN, with nitrile ligands located in cis positions in the coordinati on spheres of metal atoms. Kinetics of thermal decomposition of free a nd complexed AIBN were studied and compared. The gas evolution rate wa s measured in the presence of tetrabutoxytitanium, which does not reac t with AIBN. It was demonstrated that complexing leads to a marked inc rease of the rate constant of AIBN thermal decomposition.