Synthesis of dinuclear metallocene, complexes and catalytic properties for ethylene polymerization

被引：0

作者：

Wang, BQ ^{[1
]}

Tian, GL ^{[1
]}

Xu, SS ^{[1
]}

Zhou, XZ ^{[1
]}

Liang, B ^{[1
]}

Zhao, L ^{[1
]}

机构：

[1] Nankai Univ, Dept Chem, Tianjin 300071, Peoples R China

来源：

ADVANCES ON ORGANOMETALLIC CATALYSTS AND OLEFIN POLYMERIZATION IN CHINA AND GERMANY | 2001年

关键词：

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of Sila-bridged dinuclear zirconocenes [E(C5H4)(2)][Cp'ZrCl2](2) (Cp' = C5H5, E = Me2Si (1), Me2SiSiMe2 (2), Me2SiOSiMe2 (3), Me2SiOSiMe2OSiMe2 (4); Cp' = C5HMe4, E = Me2SiOSiMe2 (5), Me2SiOSiMe2OSiMe2 (6)), were synthesized by the reaction of Cp'ZrCl3 with the corresponding ligand dilithium salts [E(C5H4)(2)]Li-2. These complexes were studied as catalysts for ethylene polymerization in the presence of MAO. It was found that the bridge ligand played an important role in influencing their catalytic behavior. Among these dinuclear catalysts, 4 showed the highest activity (up to 1.83 x 10(7) gPE/(molZr.h)at 70degreesC) and produced polyethylene with high molecular weight at low temperature. The relationship between the structures and catalytic properties of the catalysts are discussed.

引用

页码：184 / 193

页数：10

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