基于4-二苯基乙酸及1,3-二(4-吡啶基)丙烷的两个银配合物的结构和荧光(英文)

Structure and Fluorescence of Two Ag(Ⅰ) Complexes Based on 4-Biphenylacetate and 1,3-Bis(4-pyridyl)propane

以同物质的量比例的4-二苯基乙酸(Hbpa)、1,3-二(4-吡啶基)丙烷(bpp)和[Ag(NH3)](OH),在不同反应条件下制备了2个基于柔性配体的类三明治配合物{[Ag2(bpa)2(bpp)2]·2H2O}n(1)和{[Ag(bpa)(bpp)]·2H2O}n(2),对其进行了单晶结构、元素分析、红外光谱、荧光光谱和粉末衍射表征。结构表明1是由T型配位的银离子和Ag…Ag超分子作用组装而成的二维配合物;配合物2则是由四面体构型银离子和π…π堆积作用组装的二维配位超分子。此外,1和2还可在可见光区的不同位置发射较强荧光。

Two sandwich-like coordination polymers based on Ag（I） and mixed flexible ligands, {[Ag2（bpa）2（bpp）2] · 2H2O}n （1） and {[Ag（bpa）（bpp）] ·2H2O}, （2） （bpa-=4-biphenylacetate, bpp= 1,3-bis（4-pyridyl）propane）, have been synthesized by solution reactions of Hbpa, bpp and [Ag（NHa）]（OH） with the same ratio under different experimental conditions. They were characterized by single-crystal X-ray diffraction, EA, IR and XRD. Complex 1 is a two-dimensional network based on T-shaped coordination Ag（I） ions and Ag..-Ag interactions. In 2, the distorted tetrahedral coordination Ag（I） ions are further organized by π...π stacking interactions into another two- dimensional network. 1 and 2 exhibit different and intense emissions in the visible region. CCDC： 922168, 1; 922167, 2.