基于5-硝基间苯二甲酸配体的六核Co(Ⅱ)配合物的合成、结构及磁性  

Synthesis,Structures and Magnetic Properties of Hexanuclear Co(Ⅱ) Coordination Compounds Based on 5-Nitroisophthalic Acid Ligand

作　　者：赵振新 程琪 张浩浩 何坤欢 章应辉 ZHAO Zhen-xin;CHENG Qi;ZHANG Hao-hao;HE Kun-huan;ZHANG Ying-hui(College of Materials and Chemical Engineering,Henan University of Urban Construction,Pingdingshan 467036,China;School of Materials Science and Engineering,Nankai University,Tianjin 300350,China)

机构地区：[1]河南城建学院材料与化工学院,平顶山467036 [2]南开大学材料科学与工程学院,天津300350

出　　处：《人工晶体学报》2019年第11期2092-2098,共7页Journal of Synthetic Crystals

基　　金：国家重点基础研究发展计划(973)项目(2014CB845600);河南省科技厅重点科研项目(182102210218);河南城建学院基础研究项目(2016QY013)

摘　　要：以5-硝基间苯二甲酸(H 2 nip)作为主配体、4,4′-二吡啶胺(dpa)为辅助配体,在不同溶剂中合成了2种Co(II)配合物{[Co 3(μ3-OH)(μ2-OH)(nip)2(dpa)(MeOH)(H 2 O)]·2H 2 O}n(1)和{[Co 3(μ3-OH)2(nip)2(dpa)(EtOH)(H 2 O)]·2H 2 O}n(2)。采用单晶X射线衍射、红外光谱(IR)、元素分析等方法对两种配合物进行了表征。结构分析表明两种配合物均为基于六核钴簇的三维框架结构,但不同的溶剂分子配位导致二者具有不同的拓扑结构,表明溶剂对配合物结构有重要影响。磁学研究显示该两种配合物均为反铁磁行为。With 5-nitroisophthalic acid(H 2 nip)as primary ligand and 4,4′-dipyridylamine(dpa)as auxiliary ligand,two new Co(II)-based coordination compounds,namely{[Co 3(μ3-OH)(μ2-OH)(nip)2(dpa)(MeOH)(H 2 O)]·2H 2 O}n(1)and{[Co 3(μ3-OH)2(nip)2(dpa)(EtOH)(H 2 O)]·2H 2 O}n(2),were hydrothermally synthesized in different solvents and characterized by single-crystal X-ray diffraction,elemental analyses,infrared spectra and powder X-ray diffraction.Both of them exhibit three-dimensional framework based on hexanuclear cobalt clusters with different topological structures caused by the coordination of distinct solvents,which indicates the important influence of solvents on the structures of coordination compounds.Magnetic studies reveal antiferromagnetic behaviors both for 1 and 2.

关 键 词：配合物 5-硝基间苯二甲酸 钴(II)离子 磁性 

分 类 号：O614[理学—无机化学]