Organoamido zirconium(IV) and titanium(IV) complexes and their catalysis towards ethylene polymerization

被引：4

作者：

Zhou, Meisu ^{[1
]}

Yang, Qiaokun ^{[1
]}

Tong, Hongbo ^{[1
]}

Yan, Lei ^{[1
]}

Wang, Xiaoyang ^{[1
]}

机构：

[1] Shanxi Univ, Inst Appl Chem, Taiyuan 030006, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 127期

关键词：

CRYSTAL-STRUCTURES; LIGANDS SYNTHESIS; DONOR LIGANDS; COORDINATION; CHEMISTRY; ANALOGS; LITHIUM; CU(I); AMIDO; LI;

D O I：

10.1039/c5ra20868h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reaction of PhN(Li) SiMe3 with 2 equiv. of dimethylcyanamide with further addition of 2 equiv. of CpTiCl3 led via Me3SiCl elimination to dinuclear titanium(IV) compound 1. The reaction of DippN(Li) SiMe3 with 1 equiv. of dimethylcyanamide with further addition of 1 equiv. of CpTiCl3 afforded centrosymmetric dimeric titanium(IV) compound 2 and mononuclear 3 with the elimination of Me3SiCl. The zirconium(IV) compound 4 was obtained by the addition reaction of PhN(Li) SiMe3 with 2 equiv. of dimethylcyanamide and metathesis reaction with ZrCl4. X-ray diffraction studies of 1-4 establish the dinuclear titanium(IV) structure in 1, half-titanocene of 2 and 3, and a propeller-like complex fragment of 4. Complexes 2 and 4 show moderate or high activities in the polymerization of ethylene upon activation with methylaluminoxane (MAO).

引用

页码：105292 / 105298

页数：7

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