| 基于香豆素Schiff碱双核Ni(Ⅱ)和立方烷型Cu4(μ3-O)4的四核Cu(Ⅱ)配合物的合成、晶体结构及光谱性质 | |
| Synthesis, Crystal Structure and Spectral Properties of Binuclear Ni(Ⅱ) and Cubane-like Cu4(μ3-O)4 Cored Tetranuclear Cu(Ⅱ) Complexes Based on Coumarin Schiff Base | |
| 摘要: 合成了2个3-氨基-4-羟基香豆素类Schiff碱双核Ni（Ⅱ）和立方烷型Cu4（μ3-O）4的四核Cu（Ⅱ）配合物，[Ni（L1）（DMF）（H2O）]2（1）（H2L1=3-（（5-溴-2-羟基-亚苄基）-氨基）-4-羟基-苯并吡喃-2-酮）和[Cu4（L2）4]·DMF·CH3OH·2H2O（2）（H2L2=4-羟基-3-（（2-羟基-3-甲氧基-亚苄基）-氨基）-苯并吡喃-2-酮），并通过元素分析、红外光谱、紫外光谱、荧光光谱及X射线单晶衍射分析等手段进行了表征。X射线单晶衍射分析结果表明：配合物1具有双核结构，由2个金属离子和2个配体单元组成，配合物2具有立方烷型Cu4（μ3-O）4的四核结构，由4个金属离子和4个配体单元组成。配合物1是单斜晶系、C2/c空间群；配合物2是四方晶系，I41/a空间群，且中心金属Ni（Ⅱ）和Cu（Ⅱ）离子的空间构型均为六配位的扭曲的八面体。此外，配合物1通过分子间氢键、C-H…π及π…π作用形成1D超分子链结构，配合物2通过分子内氢键和π…π作用形成3D超分子结构。此外，研究了H2L1，H2L2及其相应的Ni（Ⅱ）和Cu（Ⅱ）配合物的荧光性质。 | |
| 关键词: 香豆素Schiff碱 过渡金属配合物 晶体结构 光谱性质 | |
| 基金项目: 甘肃省重点研发计划项目（No.18YF1GA054），兰州交通大学优秀科研平台（No.201706）和甘肃省高校环境友好复合材料及生物质利用重点实验室开放课题资助项目 | |
| Abstract: Dinuclear Ni(Ⅱ) and cubane-like Cu4(μ3-O)4 cored tetranuclear Cu(Ⅱ) complexes,[Ni(L1)(DMF)(H2O)]2 (1) (H2L1=3-((5-bromo-2-hydroxy-benzylidene)-amino)-4-hydroxy-benzopyran-2-one),[Cu4(L2)4]·DMF·CH3OH·2H2O (2) (H2L2=4-hydroxy-3-((2-hydroxy-3-methoxy-benzylidene)-amino)-benzopyran-2-one) based on 3-amino-4-hydroxy-coumarin Schiff base ligands were synthesized and characterized by elemental analysis, IR, UV-Vis, emission spectra and X-ray single crystal diffraction analysis. The X-ray single crystal diffraction analysis results show that complex 1 has a binuclear structure composed of two metal ions and two ligand units, and complex 2 has a tetranuclear structure composed of four metal ions and four ligand units. Complex 1 crystallizes in monoclinic system, C2/c space group, whereas complex 2 crystallizes in tetragonal system, I41/a space group. The spatial configurations of the central metal Ni(Ⅱ) and Cu(Ⅱ) ions are all six-coordinated distorted octahedron in complexes 1 and 2, respectively. In addition, complex 1 forms a one-dimensional (1D) supramolecular chain through intermolecular hydrogen bonding, C-H…π and π…π stacking interactions, while complex 2 formed three-dimensional(3D) supramolecular network structure via intramolecular hydrogen bonding and π…π stacking interactions. | |
| Keywords: coumarin Schiff-base transition metal complex crystal structure spectral property | |
| 投稿时间：2019-06-18 修订日期：2019-11-14 | |
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| 张淑珍,常健,张宏佳,武娅,孙银霞,王彦斌.基于香豆素Schiff碱双核Ni(Ⅱ)和立方烷型Cu4(μ3-O)4的四核Cu(Ⅱ)配合物的合成、晶体结构及光谱性质[J].无机化学学报,2020,36(3):503-514. | |
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