Tris(mercaptoimidazolyl)hydroborato complexes of cobalt and iron, [TmPh]2M (M = Fe, Co):: structural comparisons with their tris(pyrazolyl)hydroborato counterparts

被引：45

作者：

Kimblin, C ^{[1
]}

Churchill, DG ^{[1
]}

Bridgewater, BM ^{[1
]}

Girard, JN ^{[1
]}

Quarless, DA ^{[1
]}

Parkin, G ^{[1
]}

机构：

[1] Columbia Univ, Dept Chem, New York, NY 10027 USA

来源：

POLYHEDRON | 2001年 / 20卷 / 15-16期

基金：

美国国家卫生研究院;

关键词：

complexes of cobalt and iron; structural characterization; sandwich complexes;

D O I：

10.1016/S0277-5387(01)00780-X

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The ti is(mercaptophenylimidazolyl)borate iron and cobalt complexes [Tm-Ph](2)M (M = Fe, Co) have been synthesized by reaction of [Tm-Ph]T1 With MI2. Structural characterization by X-ray diffraction demonstrates that the potentially tridentate [Tm-Ph] ligand binds through only two sulfur donors in these 'sandwich' complexes and that the 'tetrahedral' metal centers supplement the bonding by interactions with the two B-H groups. Comparison of the structures of [Tm-Ph](2)M (M = Fe, Co) with the related tris(pyrazolyl)borate [Tp(Ph)](2)M counterparts indicates that the tris (mercaptoimidazolyl) ligand favors lower primary coordination numbers in divalent metal complexes. The trivalent complexes, {[Tp(Ph)](2)Fe}[ClO4] and {[pzBm(Me)](2)Co}I, however, exhibit octahedral coordination, with the ligands binding using their full complement of donor atoms. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1891 / 1896

页数：6

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