三维银配位聚合物晶体结构及性质研究

目的基于多功能配体2,2’-联吡啶-3,3’-二甲酸合成其银的配位聚合物{Ag4(L)2.(H2O)].3(H2O)}n(1)(其中L=2,2’-联吡啶-3,3’-二甲酸),并对其性质进行研究。方法使用水热法合成该配位聚合物,采用X-射线单晶衍射测定其结构,并对其进行了红外光谱及元素分析。结果结构研究发现配合物1为3D金属有机框架结构,属正交晶系,空间群为Pbcn,a=13.889(4),b=13.470(4),c=13.852(4),α=90°,β=90°,γ=90°。结论配合物的每个不对称结构单元中包含2个晶体学独立的Ag(I)原子,1个配体L,0.5个配位水分子和1.5个游离水分子。每个配体通过桥联了6个不同的Ag(I)原子构筑了一例具有三维框架结构的配位聚合物。

Synthesis and characterization of a Ag(I) 3D complex

Aim The synthesis and property study of a new Ag(I) complex {Ag4(L)2·(H2O)]·3(H2O)}n(1)(L=2,2′-bipyridyl-3,3′-dicarboxylate).Methods The new complex has been synthesized by hydrothermal reactions,determined by X-ray single crystal diffraction and characterized by IR,elemental analyses.Results The crystal paraments of 3D Ag(I) complex are as followes: Orthorhombic,Pbcn space group,a=13.889(4),b=13.470(4),c=13.852(4),α=90°,β=90°,γ=90°.Conclusion There are two independent silver(I) ions,one L ligand,0.5 coordinated water molecules and 1.5 guest water molecules in its per asymmetric unit.Every ligand was coordinated with six different Ag atoms to form a 3D coordination polymer.