基于1,2,5-噻二唑-3,4-二甲酸配体的钴配合物的合成及磁学性能研究

摘要

以1,2,5-噻二唑-3,4-二甲酸(H2 tdzdc)为主配体,直线型的4,4'-联吡啶为辅助配体,与乙酸钴在水热条件下反应合成了一例钴配合物,通过单晶X-射线衍射确定了化合物的结构,并对其进行了元素分析、红外光谱表征.单晶结构解析表明:配合物[Co(tdzdc)(4,4'-bipy)(H2O)]n(1)具有二维层状结构,可将化合物简化为sql拓扑.磁性研究表明:配合物1中的钴离子存在较强的旋轨耦合,钴离子之间具有反铁磁相互作用,链间是也是反铁磁相互作用,使得1整体上展现出反铁磁行为.%A new CoⅡ coordination polymer,named [Co (tdzdc) (4,4'-bipy) (H2O)]n (1) has been synthesized by hydrothermal reaction of Co (OAc) 2,1,2,5-thiadiazole-3,4-dicarboxylic acid (H2 tdzdc) and rigid linear ligand 4,4'-bipyridine (4,4'-bipy).The structure of coordination polymer 1 has been determined by single-crystal X-ray diffraction analyses,and characterized by elemental analyses,IR,powder X-ray diffraction.Coordination polymer l exhibits plane sql topology.Furthernore,the magnetic investigation of the coordination polymer 1 reveal that the cobalt ions exist strong spin orbit coupling,antiferromagnetic interaction couplings between cobalt ions of 1,so coordination polymer 1 displays antiferromagnetic behaviors.