新型含氮配体钴配合物的水热合成、晶体结构及荧光性质  

Hydrothermal Synthesis, Crystal Structure and Fluorescence Property of A Novel Cobalt Complex Containing Nitrogen-Donor Ligand

作　　者：关磊[1] 刘泽汉 任冰洁 GUAN Lei;LIU Ze-han;REN Bing-jie(School of Chemistry and Materials Science,Liaoning Shihua University,Fushun 113001,China)

机构地区：[1]辽宁石油化工大学化学与材料科学学院

出　　处：《合成化学》2019年第11期904-908,共5页Chinese Journal of Synthetic Chemistry

基　　金：辽宁省教育厅项目(L2015299);大学生创新训练项目(201710148000118,201710148000147)

摘　　要：以4,5-二羟基苯-1,3-二磺酸钠(Na2H2L)和4,4′-bipy为原料,采用水热法与Co(NO3)2反应合成了新的含氮配体钴配合物[Co(4,4′-bipy)(H 2 O)4]·H2 L·2H2O(1)(H2L2-=4,5-二羟基苯-1,3-二磺酸根离子,4,4′-bipy=4,4′-联吡啶),其结构和组成经X-射线单晶衍射、红外光谱、元素分析和热重分析表征。晶体结构解析表明:钴离子与4,4′-bipy和水分子配位,形成扭曲的八面体配位构型。H2L2-配体没有配位,仅起平衡电荷作用。在结构单元中,[Co(4,4′-bipy)(H2O)4]^2+,H2L2-和自由水分子之间通过氢键相连。配合物的荧光发射峰与配体相比发生了蓝移,最大发射峰位于357 nm。A novel cobalt complex,[Co(4,4′-bipy)(H2O)4]·H2L·2H2O(1)(H2 L2-=4,5-dihydroxy-1,3-benzene-disulfonate,4,4′-bipy=4,4′-bipyridine),was synthesized by hydrothermal method.The structure and composition of the complex were characterized by X-ray single crystal diffraction,elemental analysis,infrared spectroscopy and thermogravimetric analysis.Single crystal diffraction study showed that the cobalt ions coordinate with 4,4′-bipy and water molecules to form distorted octahedral coordination configuration.H 2 L-ligands only balance the charge without coordination.In the structural unit,[Co(4,4′-bipy)(H 2 O)4]^2+,H 2 L 2-and free water molecules were connected by hydrogen bonds.Compared with the ligand,the fluorescence emission peak of the complex has a blue shift,and the maximum emission peak lacates at 357 nm.

关 键 词：配位构型 钴配合物 水热合成 晶体结构 荧光性质 

分 类 号：TQ4222[化学工程] O76[理学—晶体学]