基于羧酸盐配位的两种二维钴配合物的合成、晶体结构和磁性研究  

Synthesis,Structure and Magnetic Properties of Two 2D Cobalt Complexes Based on Carboxylate

作　　者：金楠皓 刘宇奇[1] 王开明 王新颖[1] 李玮[1,2] JIN Nanhao;LIU Yuqi;WANG Kaiming;WANG Xinying;LI Wei(Faculty of Science,Kunming University of Science and Technology,Kunming 650500,China;Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China)

机构地区：[1]昆明理工大学理学院,云南昆明650500 [2]昆明理工大学冶金与能源工程学院,云南昆明650093

出　　处：《昆明理工大学学报（自然科学版）》2021年第6期98-108,共11页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金联合基金项目(u1502273);昆明理工大学引进人才科研启动基金项目(KKSY201507026);昆明理工大学分析测试基金(2019M20182111050,2020M20192111072)。

摘　　要：采用水热合成技术合成得到两种配合物:{[Co(AIP)(H_(2)O)]·2H_(2)O}_(n)(1),[Co_(2)(HOBA)_(4)(H_(2)O)_(4)]_(n)(2)(H_(2)AIP=5-氨基间苯二甲酸,H_(2)OBA=4,4′-二羧基二苯醚).利用X射线单晶衍射、元素分析、X射线粉末衍射和红外光谱对其进行表征.X射线单晶分析表明这两个配合物均为4-连接二维网状结构,拓扑符号为{4^(4)·6^(2)},借助于氢键作用力,最终拓展成三维超分子结构.此外,在2~300 K,外加磁场为1000 Oe条件下,对这两个配合物进行磁学性质研究,并分别在2~300 K和61~300 K范围内对测试的变温磁化率数据进行居里外斯线性拟合,拟合得到它们的居里外斯温度分别为-1.478 K和-0.524 K,证明两种配合物之间均存在反铁磁相互作用.Two novel metal-organic complexes{[Co(AIP)(H_(2)O)]·2H_(2)O}_(n)(1)and[Co_(2)(HOBA)_(4)(H_(2)O)_(4)]_(n)(2)(H_(2)AIP=5-Aminoisophthalic acid,H_(2)OBA=4,4′-dicarboxydiphenyl ether)have been hydrothermally synthesized.The structure was characterized by techniques of X-ray single-crystal diffraction,elemental analysis,X-ray powder diffraction and infrared spectra.X-ray crystal structure analyses reveal that both of the complexes exhibited 4-connected 2D layer structure with the point symbol of{4^(4)·6^(2)},which were extended into 3D supramolecular network by means of hydrogen bonds.Moreover,the magnetic property of the two complexes was also investigated at 2—300 K with an external magnetic field of 1000 Oe and magnetic susceptibility data were rationally fitted with the Curie-Weiss Law at 2—300 K and 61—300 K withθ=-1.478 K and-0.524 K,respectively,indicating weak antiferromagnetic interactions among Co(II)ions in the two complexes.

关 键 词：水热合成 晶体结构 MOFS 羧酸盐配体 反铁磁性 

分 类 号：O641.4[理学—物理化学]