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以3,5-二甲基-1-羧甲基-4-吡唑甲酸和4,4′-联吡啶为配体,合成了1个单核锌(Ⅱ)配合物[Zn(4,4′-bpy)(Hcmdpca)2(H2O)3]·2H2O(1)和1个锌(Ⅱ)的一维配位聚合物[Zn(4,4′-bpy)(Hcmdpca)2(H2O)]·3H2O(2)(H2cmdpca=3,5-二甲基-1-羧甲基-4-吡唑甲酸;4,4′-bpy=4,4′-联吡啶),并用元素分析、红外光谱、X-射线单晶衍射结构分析、热重分析等对其进行了表征。配合物1和2都属于单斜晶系,空间群为P21/c。配合物1的锌离子都位于一个畸变的八面体构型中。配合物1中的独立结构单元间通过分子间氢键作用构成一个三维的超分子结构。而在2中,锌离子位于一个畸变的四方锥构型中,每个4,4′-联吡啶分子桥联2个相邻的锌(Ⅱ)离子,形成一个一维链;这些一维链和水分子通过分子间氢键进一步形成一个三维的结构。此外还考察了1和2的热稳定性和固体荧光性质。
A novel mononuclear zinc (Ⅱ) complex [Zn (4,4)] was synthesized from 3,5-dimethyl-1-carboxymethyl-4-pyrazolecarboxylic acid and 4,4’- (Zn (4, 4’-bpy) (Hcmdpca) 2 (H 2 O)] with 1-zinc (Ⅱ) · 3H2O (2) (H2cmdpca = 3,5-dimethyl-1-carboxymethyl-4-pyrazolecarboxylic acid; 4,4’-bpy = 4,4’-bipyridine) and analyzed by elemental analysis, , X-ray single crystal diffraction structure analysis, thermogravimetric analysis of its characterization. Both complexes 1 and 2 belong to the monoclinic space group P21 / c. The complex 1 zinc ions are in a distorted octahedral configuration. Complex 1 in the independent structural unit by intermolecular hydrogen bonding to form a three-dimensional supramolecular structure. In 2, zinc ions are located in a distorted tetragonal pyramidal configuration, and each 4,4’-bipyridine molecule bridges two adjacent zinc (II) ions to form a one-dimensional chain. These one-dimensional chains And water molecules through the intermolecular hydrogen bond to further form a three-dimensional structure. In addition, the thermal stability and solid fluorescence properties of 1 and 2 were investigated.