含肟基的Schiff碱Cu(Ⅱ)和Ni(Ⅱ)配合物的合成、超分子结构和光谱性质 |
Syntheses, Supramolecular Structures and Spectroscopic Properties of Cu(Ⅱ) and Ni(Ⅱ) Complexes with Schiff Base Containing Oxime Group |
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摘要: 合成了2个含肟基Schiff碱的Cu(Ⅱ)和Ni(Ⅱ)配合物[Cu(L1)2]·(1,4-dioxane)(1)和[Ni(L2)2](2),并通过元素分析、红外光谱、紫外可见光谱,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均包含1个中心金属离子和2个双齿配体单元,且金属离子的配位数均为4,均具有轻微扭曲的平面四边形几何构型。不同的是配合物1通过分子间氢键以及π…π堆积作用相连接形成了三维超分子结构,而配合物2仅通过分子间的π…π堆积作用形成了一条一维超分子链。 |
关键词: Schiff碱配体 Cu(Ⅱ)和Ni(Ⅱ)配合物 超分子结构 荧光性质 |
基金项目: 兰州交通大学优秀科研平台(No.201706)、甘肃省重点研发计划项目(No.18YF1GA054)支持。 |
Abstract: Two Cu(Ⅱ) and Ni(Ⅱ) complexes,[Cu(L1)2]·(1,4-dioxane) (1) (HL1=8-(((4-(1-((benzyloxy) imino) ethyl) phenyl) imino) methyl)-7-hydroxy-4-methyl-2H-chromen-2-one) and[Ni(L2)2] (2) (HLL2=1-(4-(((2-hydroxynaphthalen-1-yl) methylene) amino) phenyl) ethanone O-benzyloxime), have been synthesized and characterized by elemental analyses, IR spectra, UV-Vis spectra, fluorescence spectra and X-ray single crystal diffraction method. X-ray crystallographic analysis shows that the Cu(Ⅱ) and Ni(Ⅱ) ions are all four-coordinated in a trans-N2O2 slightly distorted square-planar geometry by two hydroxy O and two imine N atoms from two N,O-bidentate Schiff base ligands. Moreover, complex 1 links some other molecules into an infinite 3D supramolecular structure by intermolecular hydrogen bonds and π…π stacking interactions, while complex 2 forms 1D infinite chain via intermolecular π…π stacking interactions. Furthermore, the fluorescence property of HL1, HLL2 and their metal complexes 1 and 2 are discussed. |
Keywords: Schiff base ligand Cu (Ⅱ) and Ni (Ⅱ) complexes supramolecular structure fluorescence property |
投稿时间:2018-07-25 修订日期:2018-08-23 |
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张宏佳,常健,贾浩然,孙银霞.含肟基的Schiff碱Cu(Ⅱ)和Ni(Ⅱ)配合物的合成、超分子结构和光谱性质[J].无机化学学报,2018,34(12):2261-2270. |
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