一种新型铜配位聚合物的合成、结构和磁性研究

A New Cu (II) Coordination Polymer: Synthesis, Structure and Magnetic Property

通过水热法合成一种新型的三核金属铜配位聚合物[Cu_3(cbpy)_2(H_2O)_4]_n(H_3cbpy=1-(2-羧苯基)-1H-吡唑-3,5-二羧酸),并对其进行元素分析、红外光谱、热重、单晶和粉末X射线衍射测定.配合物为一维结构,中心离子Cu(Ⅱ)采用不同的配位模式,分别为平面四方形和四方锥形.每个配体与3个金属原子相连形成次级结构单元[Cu_3(μ_3-cbpy)],次级结构单元进一步通过配体相互连接形成无限Z字形1D链.此外,对配合物进行磁性质的研究,实验表明配合物存在铁磁交换相互作用,对于研究磁性材料如自旋电子器件和高密度信息存储具有潜在的应用价值.

A novel 1D Cu(Ⅱ)-organic framework[Cu_(3)(cbpy)_(2)(H_(2)O)_(4)]_(n)(H_(3)cbpy=1-(2-carboxybenzyl)-1H-pyrazole-3,5-dicarboxylic acid)has been hydrothermally synthesized and structurally characterized by elemental analysis,IR spectrum,TG,single-crystal and powder X-ray diffraction.The complex exhibits one-dimensional framework and the central ions Cu(II)adopt different coordination modes,which are planar and square pyramid geometry,respectively.Each cbpy^(3-)ligand connects three metal atoms forming a[Cu_(3)(μ_(3)-cbpy)]SBU,which further connects to each other forming an infinitely zig-zag shaped 1D chains.Magnetic susceptibility measurements indicate the presence of ferromagnetic exchange interaction in the complex,which exhibits potential applications in the fields of spintronic devices and high-density information storage.