Zirconium complexes of bipyrrolidine derived salan ligands for the isoselective polymerisation of rac-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.