SYNTHESIS AND CHARACTERIZATION OF MONONUCLEAR TITANIUM COMPLEXES CONTAINING A BIS(PHENOXY) LIGAND DERIVED FROM 2,2'-METHYLENE-BIS(6-TERT-BUTYL-4-METHYLPHENOL)

被引：92
|
作者：
OKUDA, J
FOKKEN, S
KANG, HC
MASSA, W
机构：
[1] Fachbereich Chemie, Universität Marburg, Marburg, D-35032, Hans-Meerwein-Straße
来源：
CHEMISCHE BERICHTE | 1995年 / 128卷 / 03期
关键词：
TITANIUM COMPLEXES; BIDENTATE PHENOXY LIGANDS; BULKY PHENOLS; LEWIS ACIDITY; PENTACOORDINATION;
D O I：
10.1002/cber.19951280304
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A series of new titanium complexes of the general type Ti(mbmp)X(2) (X = Br, I; OMe, OiPr, OtBu), containing a bidentate bis(phenoxy) ligand derived from 2,2'-methylenebis(6-tert-butyl-4-methylphenol) (mbmpH(2)), was prepared. The H-1-chemical shifts for the protons of the methylene link were found to vary considerably as a function of the ligand X. Reaction of Ti(OiPr)(4) with two equivalents of mbmpH(2) gave the C-2-symmetric spiro-titanate complex Ti(mbmp)(2). The crystalline labile solvent adducts of the dichloro complex Ti(mbmp)Cl-2 with THF and DME were isolated and characterized. A single-crystal X-ray structural analysis revealed the THF adduct to be a mono(THF) adduct with a trigonal-bipyramidal configuration, the bidentate mbmp Ligand spanning an apical and equatorial site and the THF ligand occupying the remaining apical position.
引用
收藏
页码：221 / 227
页数：7
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