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合成并通过单晶X射线衍射、元素分析及红外光谱表征了配合物[Cu_2(L)_2Br_2]·CH_3OH(1)和[Zn_2(L)_2(CH_3COO)_2]·2CH_3OH(2)的结构(HL为3-乙基-2-乙酰吡嗪缩4-苯基氨基脲)。单晶衍射结果表明,配合物1中,中心Cu(Ⅱ)离子与来自1个三齿缩氨基脲配体阴离子和2个μ2-桥联的溴离子配位,拥有扭曲的四方锥配位构型。配合物2中Zn(Ⅱ)离子配位构型与配合物1中Cu(Ⅱ)离子的相同,周围的供体原子为N_2O_3。配合物2中的2个醋酸根的配位模式不尽相同,其中一个为μ-OCO双齿桥联,另外一个为μ-O单齿桥联。甲醇溶液中,配合物1和2的荧光发射峰与配体HL相似。
The structures of [Cu_2 (L) _2Br_2] · CH_3OH (1) and [Zn_2 (L) _2 (CH_3COO) _2] · 2CH_3OH (2) were synthesized and characterized by single crystal X-ray diffraction, elemental analysis and IR spectra HL is 3-ethyl-2-acetylpyrazine 4-phenylsemicarbazide). The results of single crystal diffraction show that in complex 1, the central Cu (II) ions coordinate with the bromide ions from one tridentate semicarbazide ligand anion and two μ 2-bridged bonds and possess a distorted tetragonal pyramidal coordination structure type. The complex structure of Zn (Ⅱ) in complex 2 is the same as that of Cu (Ⅱ) in complex 1, and the surrounding donor atoms are N 2 O 3. The coordination mode of 2 acetate in the complex 2 is different, one is μ-OCO bidentate bridging and the other is μ-O single-tooth bridging. In methanol solution, the fluorescence emission peaks of complexes 1 and 2 are similar to ligand HL.