Stoichiometric olefin insertion into the Ti-C bond of four-coordinate cationic bis(phenolate) titanium aryl and benzyl complexes

被引：26

作者：

Gielens, EECG ^{[1
]}

Dijkstra, TW ^{[1
]}

Berno, P ^{[1
]}

Meetsma, A ^{[1
]}

Hessen, B ^{[1
]}

Teuben, JH ^{[1
]}

机构：

[1] Univ Groningen, Ctr Catalyt Olefin Polymerisat, Stratingh Inst, NL-9747 AG Groningen, Netherlands

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1999年 / 591卷 / 1-2期

关键词：

olefin insertion; titanium alkyls; cationic complexes;

D O I：

10.1016/S0022-328X(99)00504-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of five-coordinate bis(phenolate) titanium hydrocarbyl complexes (MBP)Ti(eta(2)-R)R' was prepared, with MBP = 2,2'-methylenebis(4-methyl-6-tert-butylphenolate), R = C6H4(o-CH2NMe2); R' = Cl, OSO2CF3, Me, CH2CMe3 or R = CH2C6H4(o-NMe2); R' = Cl, Me. A structure determination of (MBP)Ti[eta(2)-C6H4(o-CH2NMe2)]OSO2CF3 showed the metal to have a distorted trigonal bipyramidal coordination geometry. Cationic four-coordinate derivatives [(MBP)Ti(eta(2)-R)](+) were generated by reacting the R' = Me derivatives with the Lewis acid B(C6F5)(3). These cations were found to undergo stoichiometric insertions of ethene and propene into the Ti-C bond, as seen by 1D and 2D-NMR spectroscopy and quenching reactions with CD3OD. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：88 / 95

页数：8

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