Synthesis and Crystal Structure of a 4,4’-bipyridine Linked Dinuclear Copper(II) Complex Derived from 2-{[2-(2-hydroxyethylamino)ethylimino] methyl}-6-methylphenol

Xiu-Zhen Zhang,Yuntong Li,Fuyao Liu,Yitong Gu,Hai-Liang Zhu,Zhonglu You,Andong Liu

doi:10.17344/acsi.2016.2421

Xiu-Zhen Zhang, Yuntong Li + Show 5 more

Open Access

https://doi.org/10.17344/acsi.2016.2421

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Abstract

A novel 4,4'-bipyridine linked dinuclear copper(II) complex, [Cu2L2(bipy)](NO3)2·bipy (L = 2-[2-(2-hydroxyethylamino) ethylimino]methyl-6-methylphenol; bipy = 4,4'-bipyridine), was prepared and characterized by elemental analyses, IR spectroscopy, and single-crystal X-ray diffraction. The Cu···Cu distance is 11.129(2) Å. The CuII atom is coordinated by one phenolate O, one imine N, and one amine N atoms of a Schiff base ligand, and one N atom of the bridging 4,4'-bipyridine ligand, forming a square planar geometry. In the crystal structure of the complex, the dinuclear copper complex cations are linked by 4,4'-bipyridine molecules through intermolecular O-H···N hydrogen bonds, to form 1D chains running in the [2 0 -1] direction.

Highlights

Molecular architectures, prepared by self-assembling of discrete coordination compounds, are attractive direction of modern inorganic and physico-inorganic chemistry, because cooperative behavior of linked units may lead to new properties.[1]
The prime method for designing polynuclear complexes is to use suitable bridging ligands, such as carboxylate anions, pseudohalide anions, etc.10–12 4,4’-Bipyridine and its analogs have proved especially useful as bridging ligands, resulting in a large number of polynuclear structures
The CuII atom is coordinated by one phenolate O, one imine N, and one amine N atoms of a Schiff base ligand, and one N atom of the bridging 4,4’bipyridine ligand, forming a square planar geometry

Summary

Introduction

Molecular architectures, prepared by self-assembling of discrete coordination compounds, are attractive direction of modern inorganic and physico-inorganic chemistry, because cooperative behavior of linked units may lead to new properties.[1] Transition metal complexes with Schiff base ligands have received considerable attention for their versatile structures and wide applications in coordination chemistry and biological areas.[2,3,4,5,6,7] Among the complexes, those with polynuclear structures have been widely studied for their interesting magnetic properties.[8,9] The building block method, because of its directive function of the target structures as well as the expected physical properties, has become one of the most important synthetic strategies for the preparation of polynuclear complexes.

Experimental

Results and Discussion

Conclusions