Mono- and Binuclear Cobalt(Ⅱ) Complexes Supported by Quinoline-2- imidate Ligands： Synthesis, Characterization, and 1,3-Butadiene Polymerization

作     者：Heng Liu Rui Zhuang Bo Dong FengWang Yan-Ming Hu Xue-Quan Zhang 

作者机构：CAS Key Laboratory of Synthetic Rubber Changchun lnstitute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China University of Chinese Academy of Sciences Beijing 100049 China College of Materials Science and Engineering Jilin University Changchun 130022 China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2018年第36卷第8期

页      面：943-952页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 081705[工学-工业催化] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：financially supported by the National Key R&D Program of China (No.2017YFB0307100 (2017YFB0307103)) National Basic Research Program of China (No.2015CB654700 (2015CB654702)) 

主　　题：Late transition metal Cobalt(Ⅱ) complexes Coordination polymerization Polybutadiene 

摘      要：A series of mono-and binuclear Co（Ⅱ） complexes （Col-Co7） supported by quinoline-2-imidate ligands were synthesized and thoroughly characterized. Measured by single crystal X-ray crystallography, complexes Col and Co3 adopted distorted tetrahedral structures around the cobalt center. Upon activation by ethylaluminium sesquichloride （EASC）, these cobalt complexes exhibited high catalytic activity and cis-l,4-selectivity towards 1,3-butadiene polymerization. The effects of ligand environment, polymerization temperature, and cocatalyst types on the polymerization were investigated in detail. Interestingly, the binuclear Co（Ⅱ） complexes exhibited high thermal stability, and the polymer yields were up to 97.2% even at a high temperature of 70 ℃.