| 肟型Schiff碱Cu(Ⅱ)和Ni(Ⅱ)配合物的合成、晶体结构及光谱性质 |
| Syntheses, Crystal Structures and Spectroscopic Properties of Copper(Ⅱ) and Nickel(Ⅱ) Complexes with Oxime-Type Schiff Base Ligands |
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| 摘要: 合成了2个Schiff碱Cu（Ⅱ）/Ni（Ⅱ）配合物[Cu（L1）2]（1）和[Ni（L2）2]（2）（HL1=1-（4-（（（E）-3，5-dichloro-2-hydroxybenzylidene） amino） henyl） ethanoe O-benzyloxime，HL2=1-（4-（（（E）-4-methoxy-2-hydroxybenzylidene） amino） phenyl） ethanone O-benzyloxime），并通过元素分析、红外光谱、紫外光谱及X射线单晶衍射分析进行了表征和分析。X射线结构表明：配合物1和2具有类似的结构，均由1个金属离子和2个配体单元组成。配合物1和2都是单斜晶系，但配合物1空间群为C2/c，而配合物2为P21/c。且中心金属Cu（Ⅱ）和Ni（Ⅱ）离子的空间构型均为四配位的扭曲的平面四边形结构。配合物1通过π…π和C-H…π作用形成3D超分子结构，而配合物2通过C-H…π作用形成2D超分子孔道结构。 |
| 关键词: 铜(Ⅱ)配合物 镍(Ⅱ)配合物 晶体结构 Schiff碱配体 光谱性质 |
| 基金项目: 兰州交通大学研究生教改项目（No.160012）资助。 |
| Abstract: Two copper(Ⅱ) and nickel(Ⅱ) complexes,[Cu(L1)2] (1) (HL1=1-(4-(((E)-3,5-dichloro-2-hydroxybenzylidene)amino)henyl)ethanoe O-benzyloxime) and[Ni(L2)2] (2) (HL2=1-(4-(((E)-4-methoxy-2-hydroxybenzylidene)amino)phenyl)ethanone O-benzyloxime), have been synthesized and characterized by elemental analyses, IR and UV-Vis spectra and X-ray single crystal diffraction method. X-ray structure showed that complexes 1 and 2 have the similar structure, consisting of one metal ion, two ligand units. But the complex 1 crystallize in the monoclinic space group C2/c with the unit cell parameters:a=2.718 77(13) nm, b=1.321 99(6) nm, c=2.225 56(12) nm, β=92.069 0(10)°; whereas the complex 2 crystallize in the monoclinic space group P21/c, with the unit cell parameters:a=1.423 89(18) nm, b=0.601 22(8) nm, c=2.467 7(2) nm, β=113.353(2)°. The center Cu(Ⅱ) or Ni(Ⅱ) atoms are all four-coordinated in a trans-N2O2 slightly distorted square-planar geometry by two phenoxy O atoms and two imine N atoms from two symmetry-related N,O-bidentate Schiff base ligands. And the supramolecular structures of the two complexes 1 and 2 are widely different by obvious intermolecular interaction. The complex 1 links some other molecules into an infinite 3D layer supramolecular structure via intermolecular C-H…π and π…π stacking interactions between neighboring benzene rings, while complex 2 formed 2D supramolecular channel structure by intermolecular C-H…π hydrogen bond interactions. |
| Keywords: Cu(Ⅱ) complex Ni(Ⅱ) complex crystal structure Schiff-base ligand spectroscopic property |
| 投稿时间：2017-03-21 修订日期：2017-05-22 |
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| 郭建强,孙银霞,俞彬,李璟,贾浩然.肟型Schiff碱Cu(Ⅱ)和Ni(Ⅱ)配合物的合成、晶体结构及光谱性质[J].无机化学学报,2017,33(8):1481-1488. |
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