配位聚合物{[Sm_(2)(pdc)_(3)(C_(2)H_(6)O_(2))(H_(2)O)]·(H_(2)O)}_(n)的晶体结构及发光性能  

Crystal Structure and Photoluminescent Properties of a Coordination Polymer{[Sm_(2)(pdc)_(3)(C_(2)H_(6)O_(2))(H_(2)O)]·(H_(2)O)}_(n)

作　　者：王宏胜 韩春杰[1,2,3] 曹慧 WANG Hong-sheng;HAN Chun-jie;CAO Hui(Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province,Henan 461000,China;Institute of Surface Micro and Nano Materials,Xuchang University,Henan 461000,China;College of Chemical and Materials Engineering,Xuchang University,Henan 461000,China)

机构地区：[1]河南省微纳米能量储存与转换材料重点实验室,河南许昌461000 [2]许昌学院表面微纳米材料研究所,河南许昌461000 [3]许昌学院化工与材料学院,河南许昌461000

出　　处：《稀土》2024年第3期108-114,I0005,共8页Chinese Rare Earths

摘　　要：用硝酸钐水溶液、3,5-吡啶二甲酸在180℃水热条件下反应合成了一个三维配位聚合物{[Sm_(2)(pdc)_(3)(C_(2)H_(6)O_(2))(H_(2)O)]·(H_(2)O)}_(n)(H_(2)pdc=3,5-吡啶二甲酸)。X-射线单晶衍射分析表明,该配合物的结构属单斜晶系,C2/c空间群,晶胞参数为a=1.4564(4)nm,b=1.1190(6)nm,c=1.4854(5)nm,α=90°,β=94.068(18)°,γ=90°。中心离子Sm(Ⅲ)同时与九个氧原子配位,其中七个氧原子来自pdc配体,一个来自乙二醇分子,另一个来自配位水分子,通过配体pdc和乙二醇与Sm(Ⅲ)配位的连接作用,形成了三维多孔状配位聚合物。该配合物在325 nm紫外光的激发下,能发射Sm(Ⅲ)的特征荧光。A 3D(three-dimensional)samarium coordination polymer{[Sm_(2)(pdc)_(3)(C_(2)H_(6)O_(2))(H_(2)O)]·(H_(2)O)}_(n)(H_(2)pdc=3,5-pyridinedicarboxylic acid;C_(2)H_6O_(2)=glycol)was synthesized by reacting samarium nitrate aqueous solution and H_(2)pdc with hydrothermal method at 180℃.Single crystal x-ray diffraction showed the complex crystallizes in monoclinic system,C2/c space group with a=1.4564(4)nm,b=1.1190(6)nm,c=1.4854(5)nm,α=γ=90°,β=94.068(18)°.Sm(Ⅲ)is nine-coordinated with seven oxygen atoms from pdc liangds,one oxygen atom from glycol and the other one from water molecules.A 3D porous complex was constructed by the connections between Sm(Ⅲ)and the ligands of pdc anions and glycol molecules.The complex emits the characteristic fluorescence of Sm(Ⅲ)under excitation of 325 nm ultraviolet light.

关 键 词：钐 3 5-吡啶二甲酸 配位聚合物 晶体结构 光致发光 

分 类 号：O614.337[理学—无机化学]