Polymerization of ethylene by the electrophilic mixed cyclopentadienylpyridylalkoxide complexes [CpM{NC5H4(CR2O)-2}Cl2] (M = Ti, Zr, R = P, Pri)

被引：83

作者：

Doherty, S

Errington, RJ

Jarvis, AP

Collins, S

Clegg, W

Elsegood, MRJ

机构：

[1] Univ Newcastle Upon Tyne, Dept Chem, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England

[2] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada

来源：

ORGANOMETALLICS | 1998年 / 17卷 / 16期

关键词：

D O I：

10.1021/om980222u

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The group 4 mixed-ligand compounds [CpM-(NC5H4(CR2O)-2)Cl-2] (M = Ti; R = Pr-i (1a), Ph (1b); M = Zr, R = Pr-i (2a), Ph (2b)) have been prepared and characterized. Single-crystal X-ray analyses reveal that 2a and 2b adopt four-legged piano-stool structures in which the cyclopentadienyl Ligand is asymmetrically bonded and the pyridylalkoxide is bidentate. Toluene solutions [CpM(NC5H4(CR2O)-2)Cl-2] and methylaluminoxane catalyze the polymerization of ethylene generating high molecular weight polymers with narrow molecular weight distributions. The activity of the titanium- and zirconium-based catalysts are comparable.

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页码：3408 / 3410

页数：3

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