Zirconium complexes of bipyrrolidine derived salan ligands for the isoselective polymerisation of <i>rac</i>-lactide

Abstract

Herein we report the synthesis and characterisation of a series of Zr(IV) 2,2'-bipyrrolidine-salan derived complexes and their exploitation for the ring opening polymerisation of rac-lactide to afford highly isotactically enriched polymers.