Zinc complexes supported by N, O-bidentate amino-alkoxyl ligands: Synthesis, characterization and catalytic property for the ring-opening polymerization of l-lactide. (8th January 2018)

• Record Type: Journal Article
• Authors: Han, Yancheng; Gao, Aihong; Zhang, Yongfang; Yao, Wei; Guan, Haibin
• Is Part Of: Polyhedron. Volume 139(2018)
• Page Start: 243
• Page End: 248
• Publication Date: 2018-01-08
• Subjects: Catalyst -- Zinc complex -- Lactide -- Ring-opening polymerization -- Amino-alkoxyl ligands; Chemistry, Inorganic -- Periodicals; Chimie inorganique -- Périodiques; Organometaalverbindingen; Anorganische chemie; 546.05
• DOI: 10.1016/j.poly.2017.10.038
• Languages: English
• ISSNs: 0277-5387

Abstract

Graphical abstract: A series of new zinc complexes based on amino-alkoxyl ligands have been synthesized and fully characterized. These zinc complexes show high activities for the ring-opening polymerization ofl -lactide in the presence of benzyl alcohol in a living fashion. Abstract: A series of new zinc complexes based on the amino-alkoxyl ligands 1-HOC(R 1 R 2 )-2-NMe2 C6 H4 [R 1 = H, R 2 = Ph (L 1 H), R 1 = Et, R 2 = Ph (L 2 H), R 1 = H, R 2 = 2-FPh (L 3 H), R 1 = H, R 2 = 2-BrPh (L 4 H)] were synthesized. The zinc complexes were characterized by NMR spectroscopy and elemental analysis, as well as by an X-ray diffraction study. The solid-state structures of2 and3 reveal that the Zn centers adopt four-coordinated distorted tetrahedral geometries. These complexes show high activities in the ring-opening polymerization ofl -lactide in the presence of benzyl alcohol in a living fashion. Complex3 (R 1 = H, R 2 = 2-FPh) shows the highest activity among complexes1 –4 .