Polymerization of propene and 1,3-butadiene with vanadyl(V) monoamidinate precatalysts and MAO or dialkylaliuminum chloride cocatalysts

摘要

Two new vandyl(V) amidinates have been synthesized and characterized by single crystal X-ray diffraction and H-1 NMR. The complexes are dimeric with Cl bridges and monodentate coordination of the amidinate ligand to pseudooctahedral vanadium. In the presence of organometallic compounds of aluminum, these vanadyl complexes promote polymerization of propene and 1,3-butadiene.