Synthesis, structures and ethylene polymerization activity of chromium(III) complexes with N,O,N′-tridentate ligands

被引:9
|
作者
Chen, Fei [1 ]
Lu, Xiang-Yong [1 ]
Chen, Xue-Tai [1 ]
Li, Hua-Yi [2 ]
Hu, You-Liang [2 ]
机构
[1] Nanjing Univ, Sch Chem & Chem Engn, State Key Lab Coordinat Chem, Nanjing Natl Lab Microstruct, Nanjing 210093, Peoples R China
[2] Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Engn Plast, Inst Chem, Beijing 100080, Peoples R China
关键词
Chromium; Tridentate ligand; Ethylene; Polymerization; Catalysis; OLEFIN POLYMERIZATION; CRYSTAL-STRUCTURES; HOMOGENEOUS MODEL; PHILLIPS CATALYST; OLIGOMERIZATION; BEHAVIOR; METAL; COPPER(II); CHLORIDES;
D O I
10.1016/j.ica.2012.02.037
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
This paper reports the synthesis and characterization of four neutral chromium(III) complexes bearing N,O,N'-tridentate ligands, [LCrCl3], (L = 2-[(2-pyridylmethoxy)methyl]pyridine, 1; L = 8-(2-pyridylmethoxy) quinoline, 2; L = 8-[(2-pyridylmethoxy)methyl]quinoline, 3; L = 8-(quinolin-8-ylmethoxy)quinoline,4). Molecular structures of 1-3 have been determined by X-ray crystallography, which show that L-1 and L-3 exhibit facial configuration in 1 and 3 while L-2 adopts meridional arrangement in 2. The ethylene polymerization experiments show that complexes 1-4 are moderately active precatalysts for ethylene polymerization with activation with MAO. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:407 / 411
页数:5
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