Synthesis and spectroscopic characterization of tin(II) and tin(IV) complexes containing 2,3,5,6-tetrakis(α-pyridyl)pyrazine as a bridging ligand

被引：7

作者：

Bitzer, RS

Teles, WM

Abras, A

Ardisson, JD

Filgueiras, CAL

机构：

[1] Univ Fed Rio de Janeiro, Inst Quim, BR-21945970 Rio De Janeiro, Brazil

[2] Univ Fed Juiz Fora, Dept Quim, ICE, BR-36036330 Juiz De Fora, MG, Brazil

[3] Univ Fed Minas Gerais, Dept Fis, ICEx, BR-30161970 Belo Horizonte, MG, Brazil

[4] CNEN, Ctr Desenvolvimento Tecnol Nucl, BR-31270910 Belo Horizonte, MG, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2005年 / 16卷 / 05期

关键词：

Sn(II); Sn(IV); bimetallic complexes; 2,3,5,6-tetrakis(alpha-pyridyl)pyrazine;

D O I：

10.1590/S0103-50532005000600012

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work we investigated the reactivity of the nitrogen heterocyclic ligand 2,3,5,6-tetrakis(alpha-pyridyl)pyrazine, TPP, towards six tin-containing reagents, namely SnCl2, SnX4 (X = Cl or Br, SnRCl3 (R = Ph or Me), and SnPh2Cl2. The products were characterized by microanalysis (C, H, N, and Sn), IR spectroscopy (4000-200 cm(-1)), H-1, C-13 {H-1}, C-13-CP/MAS, Sn-119, and Sn-119-MAS NMR spectroscopy, as well as by Sn-119 Mossbauer spectroscopy. All reactions yielded bimetallic adducts, in which TPP behaved as a bis-bidentate bridging ligand, binding to each metallic center through two pyridine nitrogen atoms. This coordination mode is so far quite rare and, for the first time, is reported for main group metal-TPP complexes.

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收藏

页码：963 / 968

页数：6

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