A cationic aluminum methyl complex supported by an anionic tacn ligand

被引：13

作者：

Cui, CM ^{[1
]}

Giesbrecht, GR ^{[1
]}

Schmidt, JAR ^{[1
]}

Arnold, J ^{[1
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

来源：

INORGANICA CHIMICA ACTA | 2003年 / 351卷 / 01期

基金：

美国国家科学基金会;

关键词：

aluminum; cation; macrocycle; borate;

D O I：

10.1016/S0020-1693(03)00124-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Reaction of (tacn)H [(tacn)H = 1,4-diisopropyl-1,4,7-triazacyclononane] with AlMe3 leads to the formation of the thermally stable adduct [(tacn)H].AlMe3 (1). The dimeric aluminum dimethyl complex [(tacn)AlMe2](2) (2) was obtained by metathesis of (tacn)Li-2 with two equivalent of Me2AlCl in toluene at 80 degreesC. In 2 the anionic nitrogen atoms bridge the two AlMe2 units while the neutral amino atoms are free of coordination. Treatment of 2 with 2 equiv. of B(C6F5)(3) in CH2Cl2 yielded a well separated ionic aluminum methyl borate complex [((tacn)AlMe)(2)][MeB(C6F5)(3)](2) (3), featuring five-coordinate aluminum centers. Molecular structures of 2 and 3 were determined by single-crystal X-ray crystallography. (C) 2003 Elsevier Science B.V. All rights reserved.

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收藏

页码：404 / 408

页数：5

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