Synthesis of a tetradentate piperazine ligand and a structural study of its coordination compounds

被引：63

作者：

Ratilainen, J

Airola, K

Fröhlich, R

Nieger, M

Rissanen, K

机构：

[1] Univ Jyvaskyla, Dept Chem, FIN-40351 Jyvaskyla, Finland

[2] Univ Munster, Inst Organ Chem, D-48149 Munster, Germany

[3] Univ Bonn, Inst Anorgan Chem, D-53121 Bonn, Germany

来源：

POLYHEDRON | 1999年 / 18卷 / 17期

关键词：

metal complex; N-ligand; piperazine; transition metals; X-ray structure;

D O I：

10.1016/S0277-5387(99)00117-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A tetradentate ligand N,N'-bis(2-pyridylmethyl)piperazine (L1) and seven structures of its transition metal coordination compounds are described. Most of the compounds an of the general formula [M(L1)(NO3)(2)], with M=Cu2+, Co2+, Mn2+ and Cd2+. Ln addition, a dimeric copper(II) compound, [Cu-2(L1)(Ac)(4)](H2O)(3), and polymeric silver(I) compounds, [Ag(L1)](n)(NO3)(n)(EtOH)(n) and [Ag(L1)](n)(SO3CF3)(n), were formed. The overall structure of L1 in the metal complexes A-G varies with the size and electronic properties of the metal ions. Mononuclear complex A is a five-coordinated, B is a six-coordinated, and C and D are eight-coordinated metal complexes. The dinuclear Cu complex, E, is four-coordinated, as are the polymeric Ag complexes, F and G. The polymeric Ag complexes contain meso-helical subunits and the anions are clathrated between the metal-ligand strands. (C) 1999 Elsevier Science Ltd. All rights reserved.

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页码：2265 / 2273

页数：9

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