New Half-sandwich Zirconium(Ⅳ) Complexes Containing Salicylaldimine Ligands： Synthesis, Characterizations and Catalytic Properties  

作　　者：LIU Kefeng YAO Gang WU Wenlei GAO Bo 

机构地区：[1]Yellow River Dalta Jingbo Research Institute of Chemical Industry, Boxing 256500, P. R. China [2]School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, P. R. China [3]Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Scienees, Changehun 130022, P. R. China

出　　处：《Chemical Research in Chinese Universities》2014年第5期825-830,共6页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China（No.21204082）.

摘　　要：Two new half-sandwich zirconium（IV） complexes bearing salicylaldimine ligands of the type Cp＊Zr[2-tBu-4-R-6-（CH=NiPr）C6H2O]C12[R=H（1）, tBu（2）] were prepared by the reaction of Cp＊ZrC13 with the corresponding lithium of salicylaldimine ligands 2-tBu-4-R-6-（CH=NiPr）C6H2OLi[R=H（LiLa）, tBu（LiLb）]. Com- plexes 1 and 2 were characterized by 1H NMR, BC NMR spectroscopy and elemental analysis. When activated with AliBu3 and Ph3CB（C6F5）4, both complexes 1 and 2 exhibited reasonable catalytic activities for ethylene polymeriza- tion, producing polyethylenes with moderate molecular weight. Complexes 1 and 2 also exhibited reasonable catalyt- ic activities for ethylene copolymerization with 1-hexene, producing poly（ethylene-co-l-hexene）s with moderate molecular weight and reasonable 1-hexene content.Two new half-sandwich zirconium（IV） complexes bearing salicylaldimine ligands of the type Cp＊Zr[2-tBu-4-R-6-（CH=NiPr）C6H2O]C12[R=H（1）, tBu（2）] were prepared by the reaction of Cp＊ZrC13 with the corresponding lithium of salicylaldimine ligands 2-tBu-4-R-6-（CH=NiPr）C6H2OLi[R=H（LiLa）, tBu（LiLb）]. Com- plexes 1 and 2 were characterized by 1H NMR, BC NMR spectroscopy and elemental analysis. When activated with AliBu3 and Ph3CB（C6F5）4, both complexes 1 and 2 exhibited reasonable catalytic activities for ethylene polymeriza- tion, producing polyethylenes with moderate molecular weight. Complexes 1 and 2 also exhibited reasonable catalyt- ic activities for ethylene copolymerization with 1-hexene, producing poly（ethylene-co-l-hexene）s with moderate molecular weight and reasonable 1-hexene content.

关 键 词：Zirconium complex Metallocene catalyst Ethylene polymerization Olefin copolymerization 

分 类 号：O625.632[理学—有机化学] O641.4[理学—化学]