含有Cu_2O_2亚单元的一维Cu(Ⅱ)梯形链状配位聚合物的合成、晶体结构及磁性研究（英文）  

Synthesis, Crystal Structure and Magnetic Properties of Ladder-like Chain Cu(Ⅱ) Coordination Polymers Containing Quadrangular Cu_2O_2 Subunits

作　　者：刘江 宋健 张丽娟[1] 高媛媛[1] Liu Jiang;Song Jian;Zhang Lijuan;Gao Yuanyuan(College of Chemical Engineering, Inner Mongolia University of Technology, Hohhot 010051, China)

机构地区：[1]内蒙古工业大学化工学院,内蒙古呼和浩特010051

出　　处：《南开大学学报（自然科学版）》2018年第3期103-112,共10页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：Supported by the National Natural Science Foundation of China(21761026);the Natural Science Foundation of Inner Mongolia(2016BS0206);the Inner Mongolia Autonomous Region Higher Scientific Research Project(NJZY088)

摘　　要：以4,4'-bpy为桥联配体、多配位点Schiff碱为辅助配体与Cu(Ⅱ)离子进行自组装,获得了由四边形Cu_2O_2为亚结构单元构成的结构新颖的梯形链状Cu(Ⅱ)配位聚合物,其组成分别为[Cu_2(HL^1)_2(4,4'-bpy)](ClO_4)_2}n(1)和[Cu_2(L^2)_2(4,4'-bpy)]n(2)[其中4,4'-bpy=4,4'-联吡啶,H2L1=2-((1-羟基丙醛-2-基)亚氨基)甲基)苯酚,H2L2=2-((2-羟基-3-甲氧基亚苄基)氨基)丙酸].通过FTIR、元素分析、TGA及X射线单晶衍射分析等对配合物进行了表征.2种配位聚合物的结构多样性表明,Schiff碱辅助配体可以调节一维配位聚合物的拓扑结构.变温磁化率测定及磁性分析结果表明,配位聚合物1和2中通过酚氧基桥联的Cu(Ⅱ)离子间存在较强的铁磁耦合作用,其磁耦合参数分别为J=37.40 cm^(-1)(1)和J=12.70 cm^(-1)(2).Two new ladder-like chain Cu（Ⅱ） coordination polymers containing quadrangular Cu2O2 subunits, formulated as {[Cu2（HL^1）2（4,4＇-bpy）]（ClO4）2}n（1）, [Cu2（L2）2（4,4＇-bpy）]n（2）, and [4,4＇-bpy = 4,4＇-bipyridine, H2L^1=2-（（（1-hydroxypropan-2-yl）imino）methyl）phenol, H2 L2=2-（（2-hydroxy-3-methoxybenzylidene）amino） propanoic acid], have been synthesized using self-assembled method by reactions of bridge ligand 4,4＇-bpy with Cu（Ⅱ） ions in the presence of different Schiff base ligands. These complexes were characterized by Fourier transform infrared（FTIR） spectroscopy, elemental analysis, thermogravimetric analysis（TGA） and single-crystal X-ray diffraction analysis. The structural diversity of two coordination compounds indicates that the structures can be tuned by modification of Schiff base ligands. In addition, variable-temperature magnetic analysis of 1 and 2 shows that a ferromagnetic coupling interaction were mediated through the phenolate bridge between two Cu（Ⅱ） ions in the subunits（binuclear core） and the parameters are given as J = 37.40 cm^（–1） for 1 and J = 12.70 cm^（–1） for 2.

关 键 词：配位聚合物 梯状链 晶体结构 磁性 

分 类 号：O614[理学—无机化学]