Dialkyl titanium complexes that contain a sulfur-linked bis(phenolato) ligand: The structure of an olefin polymerization catalyst precursor

被引：27

作者：

Fokken, S ^{[1
]}

Reichwald, F ^{[1
]}

Spaniol, TP ^{[1
]}

Okuda, J ^{[1
]}

机构：

[1] Univ Mainz, Inst Anorgan Chem & Analyt Chem, D-55099 Mainz, Germany

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2002年 / 663卷 / 1-2期

关键词：

titanium; phenolato ligands; alkyl complexes; polymerization catalysts;

D O I：

10.1016/S0022-328X(02)01802-8

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The sulfur-linked bis(phenol) 2,2'-thiobis(2-tert-butyl-4-methylphenol), tbmpH(2), reacted cleanly with titanium tetrachloride to give the orange titanium dichloro complex [Ti(tbmp)Cl-2](2) in virtually quantitative yield. Reaction of the dichloro, complex [Ti(tbmp)Cl-2](2) with methyllithium. at low temperature gave the unexpectedly thermally robust, yellow dimethyl complex [Ti(tbmp)Me-2]. The reaction of the dichloro complex with benzyl Grignard reagent in pentane afforded the highly crystalline dibenzyl complex [Ti(tbmp)(CH2Ph)(2)] as a 1,4-dioxane adduct. The single crystal X-ray crystallography revealed a centrosymmetric 1,4-dioxane-bridged molecule that contains two fragments containing six-coordinate titanium centers with the tridentate tbmp ligand in a facial fashion and two eta(1)-benzyl ligands. When [Ti(tbmp)Me-2] was activated with B(C6F5)(3) in toluene, ethylene was polymerized. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：158 / 163

页数：6

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