阳离子锌配合物：一类在环境温度下催化活性聚合丙交酯的新型催化剂。

Cationic zinc complexes: a new class of catalyst for living lactide polymerization at ambient temperature.

机构信息

Department of Chemistry and Biochemistry, University of Lethbridge, 4401 University Drive, Lethbridge, Alberta, Canada.

出版信息

Chem Commun (Camb). 2010 Nov 28;46(44):8404-6. doi: 10.1039/c0cc03463k. Epub 2010 Oct 7.

PMID:20927483

Abstract

Cationic zinc complexes of a bis(phosphinimine) pincer ligand have been prepared. Methylzinc and zinc-lactate complexes have been structurally characterized, and the latter is the first cationic metal complex to promote coordination-insertion polymerization of lactide at ambient temperature. This novel catalyst system is remarkably active and also exhibits living character. A detailed investigation of the kinetics and mechanism of the polymerization process has been undertaken.

摘要

已制备出双（膦亚胺）钳形配体的阳离子锌配合物。已对其甲基锌和乳酸锌配合物进行了结构表征，后者是第一个在环境温度下促进丙交酯配位插入聚合的阳离子金属配合物。该新型催化剂体系具有显著的活性，并且还表现出活性特征。对聚合过程的动力学和机理进行了详细研究。