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Ca(II)-Gd(III)四核配合物的晶体结构与发光性质
引用本文:汪洋,叶发兵,朱立红,陈砚美.Ca(II)-Gd(III)四核配合物的晶体结构与发光性质[J].华中师范大学学报(自然科学版),2020,54(5):805-812.
作者姓名:汪洋  叶发兵  朱立红  陈砚美
作者单位:黄冈师范学院化学化工学院 催化材料制备与应用湖北省重点实验室, 湖北 黄冈 438000
基金项目:国家自然科学基金;黄冈师范学院化学实验教学示范中心项目;湖北省自然科学基金
摘    要:以吡啶-2,6-二甲酸为配体与CaCl2和Gd(NO3)3·6H2O在120 ℃下进行水热反应72 h,合成了一个四核Ca(II)-Gd(III)异金属配合物,Gd2(pydc)6Ca2(H2O)10]·2Him·6H2O (1, H2pydc=吡啶-2,6-二甲酸; Him=质子化的咪唑).用X射线单晶衍射技术对此配合物的结构进行了表征,另外,研究了该配合物的红外光谱、差热分析、以及室温固态荧光发射光谱等性质.结果显示:配合物1属于三斜晶系,P空间群,晶胞参数a=1.23722(10) nm, b=1.24751(10) nm, c=2.24917(19) nm, α=101.251(2)°, β=103.834(2)°, γ=96.391(2)°; V=3.2602(5) nm3, Z=2.配合物呈现亮蓝色荧光.

关 键 词:稀土金属配合物    Ca(II)-Gd(III)异金属配合物    晶体结构    发光性质  
收稿时间:2020-10-22

Crystal structure and luminescent properties of Ca(II)-Gd(III) heterometal tetranuclear complexes
WANG Yang,YE Fabing,ZHU Lihong,CHEN Yanmei.Crystal structure and luminescent properties of Ca(II)-Gd(III) heterometal tetranuclear complexes[J].Journal of Central China Normal University(Natural Sciences),2020,54(5):805-812.
Authors:WANG Yang  YE Fabing  ZHU Lihong  CHEN Yanmei
Institution:Hubei Key Laboratory for Processing and Application of Catalytic Materials, College of Chemistry and Chemical Engineering, Huanggang Normal University, Huanggang, Hubei 438000, China
Abstract:A heterometal tetranuclear complex Gd2(pydc)6Ca2(H2O)10]·2Him·6H2O (1, H2pydc=pyridine-2,6-dicarboxylic acid, Him+=protonated imidazole) was synthesized by hydrothermal reaction of pyridine-2,6-dicarboxylic acid with CaCl2 and Gd(NO3)3·6H2O at 120 ℃ for 72 h. The structure of the was characterized by X-ray single crystal diffraction, infrared spectroscopy, thermal stability analysis and room temperature solid-state fluorescence spectroscopy. The results show that the complex crystallizes in triclinic system, space group P, and the cell parameters as follow a=1.23722(10) nm, b=1.24751(10) nm, c=2.24917(19) nm, α=101.251(2)°, β=103.834(2)°, γ=96.391(2)°; V=3.2602(5) nm3,Z=2. The complex exhibits bright-blue fluorescence.
Keywords:rare earth metal complexes  Ca(II)-Gd(III) heterometalic complexes  crystal structure  fluorescence properties  
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