基于多羧酸烟酸配体的镝、钬、铒和铥配合物的合成及荧光、磁学性质的表征(英文)  

Synthesis,fluorescence,and magnetic characterization of nicotinic acid ligand-based dysprosium,holmium,erbium,and thulium complexes

作　　者：于林涛[1] 李奇洋 沈芝[1] 吕文君 赵强[1] YU Lin-Tao;LI Qi-Yang;SHEN Zhi;LÜWen-Jun;ZHAO Qiang(College of Chemistry and Pharmaceutical Engineering,Nanyang Normal University,Nanyang,Henan 473061,China)

机构地区：[1]南阳师范学院化学与制药工程学院,南阳473061

出　　处：《无机化学学报》2023年第11期2181-2187,共7页Chinese Journal of Inorganic Chemistry

基　　金：河南省青年骨干教师资助项目(No.2020GGJS180);南阳师范学院培育项目(No.2023PY001)资助。

摘　　要：以5-(4-羧基苯氧基)烟酸配体(H_(2)cpna)和稀土金属离子Dy^(3+)、Ho^(3+)、Er^(3+)和Tm^(3+)为原料,采用水热法合成了4种稀土金属配合物[M(Hcpna)(cpna)(H_(2)O)_(3)]n,其中M=Dy(1)、Ho(2)、Er(3)、Tm(4)。单晶X射线衍射分析表明配合物1、2、3和4为同构配合物,均为一维链状结构。通过红外、元素分析以及粉末X射线衍射对所得配合物进行了表征,同时对配合物的荧光和磁学性质开展了研究。荧光测试结果表明,配合物1~4的荧光强度均低于配体H_(2)cpna的荧光强度。在2~300 K温度范围内1 kOe直流电场下测试了配合物1~4的磁性,结果表明配合物1、2、3和4的χmT值分别为14.04、14.15、11.08和6.83 cm^(3)·mol^(-1)·K,与文献理论值相符合。Four isomorphic rare earth complexes[M(Hcpna)(cpna)(H_(2)O)_(3)]_(n),where M=Dy(1),Ho(2),Er(3),Tm(4),have been synthesized by a solvothermal method based on 5-(4-carboxyphenoxy)nicotinic acid ligand(H_(2)cpna)and rare earth metal ions Dy^(3+),Ho^(3+),Er^(3+),and Tm^(3+).Single crystal X-ray diffraction analyses reveal that complexes 1,2,3,and 4 are isostructural,and the structures are all 1D chain structures.The complexes were characterized by IR,elemental analysis,and powder X-ray diffraction,while the fluorescence and magnetic properties of the complexes were studied.The fluorescence test results show that the fluorescence intensity of complexes 1-4 were all lower than that of the H_(2)cpna ligand.The magnetism of complexes 1-4 were studied in the 2-300 K range at 1 kOe dc field.TheχmT values of complexes 1,2,3,and 4 were 14.04,14.15,11.08,and 6.83 cm^(3)·mol^(-1)·K respectively at room temperature.CCDC:2151711,1;2112781,2;2112782,3;2112783,4.

关 键 词：镝 钬 铒 铥 荧光 磁性 

分 类 号：O614.342[理学—无机化学] O614.343[理学—化学] O614.344O614.345