一维链状镉有机膦酸配合物的合成、结构和荧光性质研究  

Synthesis,Structure and Fluorescent Properties of 1D Chain Cadmium Phosphonate

作　　者：徐艳[1] XU Yan(Department of Materials Science and Engineering,Institute of Information Engineering,Suqian College,Suqian 223800,China)

机构地区：[1]宿迁学院信息工程学院,材料科学与工程系,宿迁223800

出　　处：《人工晶体学报》2020年第9期1711-1715,共5页Journal of Synthetic Crystals

基　　金：宿迁市科技计划(K201911)。

摘　　要：基于有机膦酸配体(5-pncH 3=(5-phosphono-1-naphthalenecarboxylic acid)和过渡金属镉盐水热法自组装得到一维锯齿链状配合物Cd 0.5(5-pncH 2)(H 2O)1.5(1)。采用X-射线单晶衍射、元素分析、红外光谱、X-射线单粉末衍射、热重分析对配合物进行表征。晶体结构分析表明:该配合物结晶于正交晶系,Pbcm空间群,a=0.69343(2)nm,b=0.887153(3)nm,c=4.18876(15)nm。配合物1具有一维链状结构,其中相邻的Cd II离子通过配位水分子桥联成一维锯齿链。链内存在相邻的萘环棱面堆积的C-H…π作用,链间相邻的链通过有机膦酸配体上的羧基双重氢键形成二维层状结构,层与层之间通过范德华作用力连接成三维超分子网络骨架。研究了配合物的热稳定性和光致发光性质。Self-assembly of organo phosphonate ligands and transition metal cadmium salt,1D coordination polymer,namely Cd 0.5(5-pncH 2)(H 2O)1.5(1)was hydrothermally synthesized and then characterized by single-crystal X-ray diffraction,elemental analysis,FT-IR spectroscopy,powder X-ray diffraction(PXRD),and thermogravimetric analysis(TGA).Structure analyses reveal that compound 1 crystallized in the orthorhombic system,space group Pbcm,a=0.69343(2)nm,b=0.887153(3)nm,c=4.18876(15)nm.Compound 1 disclose a 1D chain structure,in which the adjacent Cd II are bridged into one-dimensional zigzag chain by coordination water molecules.In the chain,there is a C-H…πaction of adjacent naphthalene ring edges.The adjacent chains form a two-dimensional layered structure through the carboxyl double hydrogen bond from the organic phosphonic acid ligand,and the layers are connected into a three-dimensional supramolecular network framework through the van der Waals interactions.The thermal stability and luminescence behavior of compound 1 were also investigated.

关 键 词：镉 有机膦酸 晶体结构 荧光性质 

分 类 号：O641.4[理学—物理化学]