两个Schiff碱铜配合物的合成、晶体结构、光谱性质及取代基效应（英文）

Two Cu(Ⅱ) Complexes with Schiff Base Ligands: Syntheses, Crystal Structures,Spectroscopic Properties, and Substituent Effect

合成了2个含肟基Schiff碱Cu(Ⅱ)配合物[Cu(L1)2](1)和[Cu(L2)2](2)(HL1=1-(3-((2-hydroxybenzylidene)amino)phenyl)ethanone O-benzyl oxime;HL2=1-(3-((2-Hydroxy-naphthalen-1-ylmethylene)-amino)-phenyl)-ethanone oxime),并通过元素分析、红外光谱、紫外光谱,荧光光谱及X射线单晶衍射分析进行了表征和分析。结果表明,配合物1和2具有相似的结构,均由1个中心Cu(Ⅱ)离子和2个双齿配体单元组成,且Cu(Ⅱ)离子的配位数为4,具有平面四边形结构。配合物1和2均形成了二维层状超分子结构,不同的是配合物1通过分子间π…π堆积作用相连接,而配合物2通过分子间O-H…N和C-H…π氢键作用而形成了超分子结构。进一步讨论了配合物1的荧光性质及两个配合物间配体的取代基效应。

Two new Cu（Ⅱ） complexes [Cu（L1）2]（1）（HLl=1-（3-（（2-hydroxybenzylidene）amino） phenyl） ethanone O- benzyl oxime） and [Cu（L2）2] （2） （HL2 =1-（3-（（2-nydroxy-naphthalen-l-ylmethylene）-amino）-phenyl）-ethanone oxime） have been synthesized and characterized by elemental analyses, IR spectra, UV-Vis spectra, fluorescence measurement and X-ray single crystal diffraction method. X-ray crystallographic analyses have indicated that complexes 1 and 2 have the similar structure, consisting of one Cu（Ⅱ） ion, two ligand units. In the complexes, the Cu （1I） ion lying on an inversion centre, is four-coordinated in a trans-CuN2O2 square-planar geometry by two hydroxy O and two imine N atoms from two symmetry-related N,O-bidentate Schiff base ligands. The supramolecular structures of the two complexes 1 and 2 are also similar two-dimensional supramolecular structure linking by different intermolecular interaction. Complex 1 forms an infinite two-dimensional supramolecular structure by two π ... π interaction, while that of complex 2 by intermolecular O-H ... N and C-H ..π hydrogen bond interactions. The fluorescence property of complex 1 and substituent effects of the two complexes are discussed. CCDC： 1003363, 1; 1043506, 2.