羧酸配体金属Co配合物的合成、结构及磁性  

Synthesis, Structure and Magnetic of Metal CoComplex with Carboxylic Acid Ligand

作　　者：刘航诚 阿娜尔古丽·吾甫尔 潘言亮[1] 孙佳仪 张朔 王多志[1] LIU Hangcheng;ANAERGULI·Wufuer;PAN Yanliang;SUN Jiayi;ZHANG Shuo;WANG Duozhi(College of Chemistry,Xinjiang University,State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources,Urumqi 830046,China)

机构地区：[1]新疆大学化学学院,省部共建碳基能源资源化学与利用国家重点实验室,新疆乌鲁木齐830046

出　　处：《合成化学》2024年第6期542-550,共9页Chinese Journal of Synthetic Chemistry

基　　金：大学生创新实验项目(XJU-SRT-22022);2021年新疆维吾尔自治区教学改革研究项目(PT-2021001)。

摘　　要：羧酸配体配合物在气体吸附/分离、催化、光学和磁学等众多领域均有潜在的应用价值。以5-氨基间苯二甲酸(5-H_(2)AIPC)和吡嗪甲酸(2-HPC) 2种羧酸作为配体,在溶剂热条件下与氯化钴反应,合成2种新型金属钴配合物{[Co_(2)(μ_(3)-OH_(-))_(2)(5-HAIPC)(2-PC)]}_n(1)和{[Co_(2)Cl_(2)(2-PC)_(2)(H_(2)O)_(3)]}_n(2)。通过X-射线单晶衍射、红外光谱和热重分析对配合物1和2的结构进行了表征。X-射线单晶衍射结果表明:配合物1属于C2/c空间群,由椅式四核簇经5-氨基间苯二甲酸和吡嗪甲酸2种配体连接形成三维框架结构。配合物2属于P2_1/c空间群,由配体吡嗪甲酸与金属中心Co2连接形成无限延伸的一维链,配体吡嗪甲酸与Co1连接形成二维层状结构,金属中心Co1和Co2通过配体连接进而通过氢键组装成1个三维超分子结构。对2种配合物的磁性进行测试研究,结果表明:配合物1和2均呈反铁磁性。Carboxylic acid ligand complexes have potential applications in many fields such as gas adsorption/separation, catalysis, optics and magnetism. Two carboxylic acids, 5-aminoisophthalic acid and pyrazinecarboxylic acid, were used as ligands to react with cobalt chloride under solvothermal conditions to prepare two novel cobalt complexes {[Co_(2) (μ_(3) -OH - )_(2) (5-HAIPC)(2-PC)]}_( n) ( 1 ) and {[Co_(2) Cl_(2) (2-PC)_(2) (H_(2) O)_(3) ]} n (_(2) ). The structures of complexes 1 and_(2) were characterized by X-ray single crystal diffraction, infrared spectroscopy and thermogravimetric analysis. The X-ray single crystal diffraction results show that the complex 1 belongs to the C_(2)/ c space group, and the chair-type tetranuclear cluster is connected by 5-aminoisophthalic acid and pyrazinecarboxylic acid to form a three-dimensional framework. Complex_(2) belongs to P_(2) 1 / C space group. The ligand pyrazine formic acid is connected with the metal center Co2 to form an infinitely extended one-dimensional chain. The ligand pyrazine formic acid is connected with Co1 to form a two-dimensional layered structure. The metal center Co1 and Co2 are connected by ligands and then assembled into a three-dimensional supramolecular structure by hydrogen bonding. The magnetic properties of the two complexes were tested, and the results show that both complexes 1 and_(2) were antiferromagnetic.

关 键 词：羧酸配体 Co配合物 5-氨基间苯二甲酸 吡嗪甲酸 结构表征 晶体结构 磁性 

分 类 号：O622.5[理学—有机化学]