2-乙酰吡嗪苯甲酰腙钴、锌和铜配合物的晶体结构及荧光性质

摘要

Three complexes,namely,[Co (L)2] (1),[Zn (L)2] (2) and [Cu2 (L)2Cl2] (3) based on HL (HL =2-acetylpyrazine benzoylhydrazone) were synthesized and characterized by X-ray diffraction analyses.The results show that complexes 1 and 2 are isostructural,in which the molar ratio between the metal and the ligand is 1∶2.The metal ion in each complex is surrounded by two enolizated ligands L-with N2O donor set,thus giving a distorted octahedral geometry.However,in the bi-nuclear complex 3,each Cu(Ⅱ) ion is coordinated with one monoanionic tridentate hydrazone ligand and twoμ2-chloride anions,as [CuN2OCl2],indicating the coordination geometry is a distorted tetragonal pyramid.In addition,the luminescent properties of the complexes are discussed in detail.%合成了配合物[Co(L)2](1),[Zn(L)2](2)和[Cu2(L)2Cl2] (3)(HL为2-乙酰吡嗪苯甲酰腙),并通过单晶衍射、元素分析及红外光谱表征了它们的结构.单晶衍射结果表明,配合物1和2同构,配体和金属的比例为2∶1.每个配合物中,中心金属离子与来自2个阴离子配体L-的 N2O电子供体配位,形成扭曲的八面体配位构型.在双核配合物3中,Cu(Ⅱ)离子与1个阴离子三齿酰腙配体、2个μ2桥联的氯离子配位,拥有扭曲的四方锥配位构型.此外还研究了配合物的荧光性质.