Electronic influence of ligand substituents in the ring-opening polymerization of l-Lactide promoted by OSSO-type zirconium complexes

Meduri, Angelo; Mazzeo, Mina; Lamberti, Marina; Capacchione, Carmine; Milione, Stefano

doi:10.1016/j.mcat.2019.04.007

Electronic influence of ligand substituents in the ring-opening polymerization of l-Lactide promoted by OSSO-type zirconium complexes

The zirconium complexes (OSSOCl)ZrOtBu2 (1), (OSSOBr)ZrOtBu2 (2) and (OSSOtBu)ZrOtBu2 (3) bearing OSSO-type ligands (OSSOCl-H = 1,4-dithiabutanedyl-2,2′-bis(4,6-dichlorophenol); OSSOBr-H = 1,4-dithiabutanedyl-2,2′-bis(4,6-dibromophenol); OSSOtBu-H = 1,4-dithiabutanedyl-2,2′-bis(4,6-di-tert-butyl-…