三维银配位聚合物晶体结构及性质研究

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

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。

Aim The synthesis and property study of a new Ag（I） complex { [Ag4（L）2 · （H2O） ] · 3（H2O）}.（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 lig-and was coordinated with six different Ag atoms to form a 3 D coordination polymer.