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本文通过溶剂热法合成了三个基于4′-羧基-2,2′∶6′,2″-三联吡啶(HL)的单核配合物,其分子式为[ML2]·4H2O(1,M=Zn(Ⅱ);2,M=Cu(Ⅱ);3,M=Fe(Ⅱ)),并分别对其进行了元素分析、波谱、单晶和粉末衍射表征。晶体结构测试结果表明3个配合物为异质同晶结构,都属于四方晶系的I42d空间群。配合物1～3都是1个二价金属离子和2个羧基未配位且去质子化的三齿螯合配体L配位形成的单核结构,通过分子间π-π堆积和氢键作用拓展成三维超分子网络结构。由于二价Zn离子的全充满d10电子构型,配合物1与其配体相比具有明显的室温固态蓝色荧光发射性质。
Three mononuclear complexes based on 4’-carboxy-2,2’6 ’, 2 "-terpyridine (HL) have been synthesized by solvothermal method and the molecular formula is [ML2] · 4H2O (1, 2, M = Cu (Ⅱ); 3, M = Fe (Ⅱ)) were synthesized and characterized by elemental analysis, spectra, single crystal and powder diffraction, respectively. All belong to the tetragonal I42d space group.Complexes 1 to 3 are a bivalent metal ion and two carboxyl uncoordinated and deprotonated tridentate chelating ligands L The mononuclear structure formed by coordination expands into a three-dimensional supramolecular network structure through π-π stacking and hydrogen bonding interactions. Because of the full d10 electronic configuration of the bivalent Zn ions, the complex 1 has obvious contrast with its ligand Room temperature solid blue fluorescence emission properties.