以3-硝基邻苯二甲酸根构建的环状双核Zn(Ⅱ),Cd(Ⅱ)配合物的合成及晶体结构(英文)

Synthesis, Crystal Structures of Cyclic Dinuclear Zn(Ⅱ) and Cd(Ⅱ) Complexes with 3-Nitrophthalic Acid

以3-硝基邻苯二甲酸和咪唑及2,2′-联吡啶为配体构筑了2种配合物[Zn2(npa)2(Im)4](1)和[Cd2(npa)2(2,2′-bipy)2(H2O)2]·2H2O(2)(npa2-=3-硝基邻苯二甲酸根,Im=咪唑,2,2′-bipy=2,2′-联吡啶)。用元素分析、红外光谱对其进行了表征,并用单晶X-射线衍射测定了配合物的晶体结构;测定了配合物1和2的热稳定性。2个配合物均为双核分子,具有M2C8O4十四元大环结构。配合物1的双核单元通过分子间氢键形成3D网络结构,配合物2的双核单元通过分子间氢键和π-π堆积形成2D层状结构。

Two complexes [Znffnpa）2（Im）4] （1） and [Cd2（npa）2（2,2＇-bipy）ffH20）2] .2H20 （2） （H2npa=3-nitrophthalic aeid, Im=imidazole, 2,2＇-bipy=2,2＇-bipyridine） were constructed by the use of 3-nitrophthalie acid and imidazole or 2,2＇-bipyridine, respeetively. The eomplexes were characterized by elemental analysis, IR, and the crystal struetures were determined by single X-ray diffraction. The thermal stabilities of the complexes were studied by thermal gravimetrie analysis. The two complexes are dinuclear structures, and both contain M2Cs04 14-membered rings. The dinuelear units extend to 3D network through intermolecular hydrogen bonding interactions for complex 1, while a 2D sheet structure is formed for complex 2 by hydrogen bonding and 7r-er stacking interaetions. CCDC： 965024, 1; 965025, 2.