联苯四甲酸及联吡啶构筑的一维链状银(Ⅰ)配合物的合成及晶体结构

摘要

A novel Ag(I) complex based on 4,4'-bipyridine (4,4'-bpy) and biphenyl-2,2',4,4'-tetracarboxylic acid (H4btc),namely,{[Ag(4,4'-bpy)][Ag2(H3btc)(H2btc)(4,4'-bpy)2]·3H2O}n (1) has been hydrothermally synthesized and characterized by elemental analysis,IR spectroscopy and single-crystal X-ray diffraction analysis.The complex crystallizes in triclinic system,space group P-1 with a=1.122 51(6) nm,b=1.554 01(8) nm,c=1.774 59(9) nm,β=91.641 0(10)°,V=2.8308(3) nm3,Z=2,Dc=1.764 g·cm-3,μ=1.113 mm-1,F(000)=1 508,and the final R1=0.045 0,wR2=0.0862 for I＞2σ(I).In complex 1,1D linear [Ag(4,4'-bpy)]+ chains reside in 3D supramolecular structure of 1D {[Ag2(H3btc)(H2btc)(4,4'-bpy)2]- double-chains and dissociative water molecules assembled into by hydrogen bonds.In additional,thermal stability and electrochemistry of 1 have also been studied.%采用水热法合成了一个新颖的配合物{[Ag(4,4’-bpy)][Ag2(H3btc)(H2btc)(4,4’-bpy)2]·3H2O}n(1)(H4btc=联苯-2,2 ',4,4’-四甲酸；4,4’-bpy=4,4’-联吡啶),并对其进行了元素分析、红外光谱和X射线单晶衍射测定.配合物1属于三斜晶系,空间群为P-1,a=1.12251(6) nm,b=1.55401(8) nm.c=1.774 59(9) nm,β=91.641 0(10)°,V=2.830 8(3) nm3,Z=2,Dc=1.764 g·cm-3,μ=1.113 mm-1,F(000)=1508,R1=0.0450,wR2=0.086 2(I＞2σ(I)).在1中,一维线性[Ag(4,4’-bpy)]+阳离子链包含在一维｛[Ag2(H3btc)(H2btc)(4,4’-bpy)2]-阴离子双链与游离水分子通过分子间氢键组装成的三维超分子结构中.研究了配合物的热稳定性和电化学性质.