新型银配位聚合物的制备和光吸收性能

Synthesis and optical properties of a novel silver coordinate polymer

以AgNO3、4,4＇-联吡啶（4,4＇-bipyridine,bpy）和2,5-噻吩二甲酸（thiophene-2,5-djcarboxylate,tdc）为反应物,合成新型的配位聚合物[Ag2（bpy）2（H2O）]（tdc）·6H2O.通过红外、元素分析和单晶X-射线衍射表征该配位聚合物的结构.结果表明,该化合物属三斜晶系,P（-1）空间群;晶胞参数a=0.70456 nm,b=1.1415 nm,c=1.8024nm,α=87.361°,β=88.838°,γ=72.414°,V=1.3803nm3,Z=2;9648个独立衍射点（R（int）=0.0636）,残差因子R1=0.0462,wR2=0.1122.此配位聚合物在紫外光区（350～320nm）有较强的吸收.其在剑桥晶体学数据库的编号为290518.

The reaction of AgNO3, 4, 4＇-bipyridine, and thiophene-2, 5-dicarboxylate in acetone and H2O at room temperature produces block-shaped eolourless crystals after 15 days. The crystal structure was determined by single-crystal X-ray diffraction, which was in the trielinie system with space group P（ - 1）. The unit cell parametersare as follows： a = 0.70456（13） nm, b = 1.1415（2） nm, c = 1.8024（3） nm,α = 87.361°, β= 88. 838°, γ = 72. 414°, V = 1. 3803 nm^3, Z = 2. Residual factors based on 9648 reflections （ R （int） = 0. 0636） are R1 = 0.0462, wR2 = 0. 1122. The optical absorption properties of [Ag2 （bpy）2（H2O） ] （tde） · 6H2O were determined by UV/Vis/NIR diffuse reflectance spectra, which showed strongest absorption in the UV range （350--320 nm）. The CCDC number of the compound is 290518.