Sterically demanding methyl tris(pyrazolyl)borate ligands:: synthesis and characterization of thallium(I) complexes supported by [MeB(3-(t-Bu)Pz)3]- and [MeB(3-(Mes)Pz)3]-

被引：20

作者：

Dias, HVR ^{[1
]}

Wang, XY

机构：

[1] Univ Texas, Dept Chem & Biochem, Arlington, TX 76019 USA

[2] Inst Fundamental Studies, Kandy, Sri Lanka

来源：

POLYHEDRON | 2004年 / 23卷 / 16期

关键词：

thallium; B-11; NMR; B-H coupling; tris(pyrazolyl)borate; pyrazole;

D O I：

10.1016/j.poly.2004.08.023

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Thallium derivatives of the sterically demanding methyl tris(pyrazolyl)borate ligands [MeB(3-(t-Bu)Pz)(3)](-) and [MeB(3-(MeS)Pz)(3)](-) have been synthesized using the corresponding pyrazole, Li[MeBH3] and thallium(I) acetate. Product formation could be followed by H-1 and B-11 NMR spectroscopy. [MeB(3-(t-Bu)Pz)(3)]Tl and [MeB(3-(Mes)Pz)(3)]Tl display monomeric structures. The thallium sites adopt a pyramidal geometry. The crystal structure of 3-(Mes)PzH is also reported. It forms planar, hydrogen bonded tetramers in the solid state. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：2533 / 2539

页数：7

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