title: Designing ancillary ligands for heteroleptic/homoleptic zinc complex formation: synthesis, structures and application in ROP of lactides.
abstract: Synthesis and characterization of a series of new amino-phenol/naphthol ligands (L(1,2)-H) have been developed and their respective zinc complexes ( 1 and 2-Zn ) have been synthesized. The molecular structures of L(1)-H and 1, 2-Zn were explored in detail by NMR, single-crystal X-ray studies and DFT calculations, which confirmed the existence of complexes as stabile dimers both in a solution and in the solid state. All complexes mediate the ring-opening polymerization (ROP) of lactide highly efficiently, at room temperature, in a controlled fashion. The influence of the architecture of the ligand on the desired homo/heteroleptic complex formation, as well as the relationship between the initiator design and the catalytic activity have been investigated.
authors.affiliation: Department of Chemistry, University of Wrocław, 14 F. Joliot-Curie, 50-383 Wrocław, Poland. jolanta.ejfler@chem.uni.wroc.pl.
authors.forename: D
authors.initials: D
authors.lastname: Jędrzkiewicz
authors.forename: J
authors.initials: J
authors.lastname: Ejfler
authors.forename: N
authors.initials: N
authors.lastname: Gulia
authors.forename: Ł
authors.initials: Ł
authors.lastname: John
authors.forename: S
authors.initials: S
authors.lastname: Szafert
mesh_terms: D000627:Aminophenols / Q000138:chemical synthesis / Q000737:chemistry*; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D018360:Crystallography, X-Ray; D019281:Dimerization; D008024:Ligands; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D009284:Naphthols / Q000138:chemical synthesis / Q000737:chemistry*; D011789:Quantum Theory; D015032:Zinc / Q000737:chemistry*
chemical_list: D000627:Aminophenols; D056831:Coordination Complexes; D008024:Ligands; D009284:Naphthols; D015032:Zinc