基于柔性四羧酸的三个一维/二维/三维Zn(Ⅱ)/Co(Ⅱ)配合物的晶体结构及荧光性质

Structure and Fluorescence Properties of Three 1D/2D/3D Zn(Ⅱ)/Co(Ⅱ)Complexes Based on Flexible Tetracarboxylic Acid

通过水热/溶剂热合成的方法制备了3个Zn(Ⅱ)/Co(Ⅱ)配合物{[Zn(H_(2)L)(H_(2)O)_(3)]·H_(2)O·0.5H_(4)L}_(n)(1)、{[Co(L)_(0.5)(4,4'-bpy)]·0.5H_(2)O}_(n)(2)和{[Co(L)_(0.5)(pbmb)(H_(2)O)]·H_(2)O}_(n)(3)(H_(4)L=5,5'-(hexane-1,6-diyl)-bis(oxy)diisophthalic acid,4,4'-bpy=4,4'-bipyridine,pbmb=1,1'-(1,3-propane)bis-(2-methylbenzimidazole))。结构分析表明配合物1为一维链结构。2为拓扑符号为(6^(4)·7·8)(6·7^(2))的三重穿插网络结构。3是拓扑符号为(4·6^(2))(4^(2)·6^(2)·8^(2))的(3,4)-连接的二维网络结构。配合物1呈现出较好的荧光性质。

Three complexes,namely{[Zn(H_(2)L)(H_(2)O)_(3)]·H_(2)O·0.5 H_(4)L}_(n)(1),{[Co(L)_(0.5)(4,4’-bpy)]·0.5H_(2)O}_(n)(2)and{[Co(L)_(0.5)(pbmb)(H_(2)O)]·H_(2)O}_(n)(3)(H_(4)L=5,5’-(hexane-1,6-diyl)-bis(oxy)diisophthalic acid,4,4’-bpy=4,4’-bipyridine,pbmb=1,1’-(1,3-propane)bis-(2-methylbenzimidazole)),have been prepared by solvo-/hydrothermal reactions.C omplex 1 belongs to a 1D chain stmcture.Complex 2 presents a 3D 3-fold interpenetrating framework with the Schlafli symbol(6^(4)·7·8)(6·7^(2)).Complex 3 features a(3,4)-connected 2D network with the Schlafli symbol(4·6^(2))(4^(2)·6^(2)·8^(2)).Complex 1 exhibited better fluorescence properties.CCDC:1968748,1;1968750,2;1968751,3.