Synthesis and properties of Zr-Co heterodinuclear complexes with a bridging bis(cyclopentadienyl) ligand

Zr-Co heterodinuclear complexes[(η5-C5H5)ZrCl2(η5-C5H4)CMe2(C5H5)] and [(η5-C5H5)ZrCl2(η5-C5H4)CMe2(η5-C5H4)CoI2(L)] (L = CO, P(OMe)3, PPh3) were synthesized. The molecular structures of the complexes having P(OMe)3 and PPh3 ligand were determined by X-ray crystallography. Polymerization of ethylene and propylene catalyzed by these Zr-Co heterodinuclear complexes were investigated.