Syntheses, Structures and Magnetic Properties of Two Coordination Polymers Based on 2,2-Biphenyldicarboxylate Ligand  

作　　者：ZHANG Qingfen ZHOU Zhongyuan WANG Xuan LU Jing 

机构地区：[1]Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, P R. China

出　　处：《Chemical Research in Chinese Universities》2016年第2期165-171,共7页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China（No.21101086）.

摘　　要：Two coordination polymers {[Co3L3（Me2NH）2]·（Me2NH）}n（1） and [CuL（bpy）],（2）（L=2,2＇-biphenyl dicarboxylate ion, bpy=4,4＇-bipyridine） were obtained and characterized. Compound 1 was synthesised via solvotherreal method, with the L ligands adopting syn-syn-μ2-η1：η1- and μ2-η2-coordination modes and Co（II） centers being linked to form a 1D coordination chain with trinuclear Co3 cluster as sub-units. Compound 2 was synthesized at room temperature, with the L ligand chelating the Cu（II） centers to form a 1D chain, which was further linked by the auxiliary 4,4＇-bpy ligand to form a 3D coordination network. The results of variable temperature susceptibility studies reveal that there were ferromagnetic and antiferromagnetic interactions between the paramagnetic metal centers in compounds 1 and 2, respectively.Two coordination polymers {[Co3L3（Me2NH）2]·（Me2NH）}n（1） and [CuL（bpy）],（2）（L=2,2＇-biphenyl dicarboxylate ion, bpy=4,4＇-bipyridine） were obtained and characterized. Compound 1 was synthesised via solvotherreal method, with the L ligands adopting syn-syn-μ2-η1：η1- and μ2-η2-coordination modes and Co（II） centers being linked to form a 1D coordination chain with trinuclear Co3 cluster as sub-units. Compound 2 was synthesized at room temperature, with the L ligand chelating the Cu（II） centers to form a 1D chain, which was further linked by the auxiliary 4,4＇-bpy ligand to form a 3D coordination network. The results of variable temperature susceptibility studies reveal that there were ferromagnetic and antiferromagnetic interactions between the paramagnetic metal centers in compounds 1 and 2, respectively.

关 键 词：Coordination polymer Crystal structure Magnetic property 

分 类 号：O614.121[理学—无机化学] TM271[理学—化学]