Surprising activity for Group 4 polyolefin catalysts [M {(OAr) 2 py} Cl 2 (thf)](M= Zr, Ti) bearing tridentate pyridine-2, 6-bis (aryloxide) ligands

MCW Chan, KH Tam, YL Pui, N Zhu

Index: Chan, Michael C. W.; Tam, Ka-Ho; Pui, Yung-Lin; Zhu, Nianyong Journal of the Chemical Society, Dalton Transactions, 2002 , # 16 p. 3085 - 3087

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Citation Number: 37

Abstract

Unexpectedly high ethylene polymerisation activity is observed for zirconium (IV) catalysts supported by a rigid tridentate pyridine-bis (phenolate) ligand in conjunction with MAO; a methodology towards analogues with unsymmetric ligands and the significance of the coordinated solvent molecule are described.