The synthesis and structural characterization of bis(mercaptoimidazolyl)(pyrazolyl)hydroborato and tris(mercaptoimidazolyl)hydroborato complexes of thallium(I) and thallium(III)

被引：58

作者：

Kimblin, C ^{[1
]}

Bridgewater, BM ^{[1
]}

Hascall, T ^{[1
]}

Parkin, G ^{[1
]}

机构：

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

来源：

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | 2000年 / 08期

关键词：

D O I：

10.1039/a909542j

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The bis(mercaptoimidazolyl)(pyrazolyl)hydroborato and tris(mercaptoimidazolyl)hydroborato ligands, [pzBm(Me)](-) and [Tm-Ph](-), have been used to prepare complexes of both thallium(I) and thallium(III), namely [pzBm(Me)]Tl, [pzBm(Me)]TlMe2, {[Tm-Ph](2)Tl}(2) and {[Tm-Ph](2)Tl}[ClO4]. For example, reaction of [pzBm(Me)]Tl with Me2TlCl yields [pzBm(Me)]TlMe2, while reaction of [Tm-Ph]Li with Tl(ClO4)(3) yields {[Tm-Ph](2)Tl}[ClO4]. [pzBm(Me)]TlMe2, {[Tm-Ph](2)Tl}(2) and {[Tm-Ph](2)Tl}[ClO4] have been structurally characterized by X-ray diffraction. Interestingly, for the monomeric thallium(III) derivatives, the pyrazolyl group does not coordinate to the thallium center in the dimethyl complex [pzBm(Me)]TlMe2, which is therefore four-coordinate, whereas all the mercaptoimidazolyl groups coordinate to thallium in {[Tm-Ph](2)Tl}(+), thereby resulting in a six-coordinate octahedral geometry.

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页码：1267 / 1274

页数：8

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