基于Schiff碱及咪唑类配体的镍(Ⅱ)配合物的合成、结构及其抑菌活性研究 |
Synthesis, Crystal Structure and Antibacterial Activity of Schiff Base Ni(Ⅱ) Complexes Containing Schiff Base and Imidazole |
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摘要: 以三齿席夫碱配体H2L{1-苯基-3-[(2-羟基苯)亚胺]-1-丁酮}和单齿N-杂环[咪唑(Himdz),2-甲基咪唑(Mimdz)]与Ni(OAc)2·4H2O进行配位反应,得到2个配合物[Ni(L)(Himdz)](1),[Ni(L)(Mimdz)](2)。并用元素分析,FTIR和X-射线单晶衍射进行了表征。在固体状态,配合物1和2都属于单斜晶系,P21/c空间群,分子间通过C-H…π相互作用形成二聚体,二聚体中的每个分子通过N-H…O氢键向空间扩展成一维锯齿链状结构。初步研究了配体和配合物的体外抑菌活性,结果表明,配合物1和2具有一定的抑菌活性。 |
关键词: Ni(Ⅱ)配合物 晶体结构 氢键 抑菌活性 |
基金项目: 国家自然科学基金(No.21061003);贵州省联合基金(黔科合LG字[2012]016);贵阳医学院青年基金资助项目。 |
Abstract: The two nickel (Ⅱ) complexes [Ni(L)(Himdz)](1)、[Ni(L)(Mimdz)](2) were synthesized from the reaction of tridentate Schiff base (1-phenyl-3-[(2-hydroxyphenyl)imino]-1-butanone) (H2L) and monodentate N-heterocycles [imidazole (Himdz), 2-methylimidazole (Mimdz)] with Ni(OAc)2·4H2O and characterized by elemental analysis, IR, 1H NMR spectroscopy. An X-ray structure determination of the complexes has been completed. In the solid state, both [Ni(L)(Himdz)] (1), [Ni(L)(Mimdz)] (2) crystallize in P21/c space groups, and exist as dimers due to intermolecular C-H…π interactions. Each of the dimeric molecules forms a one-dimensional zigzag chain via intermolecular N-H…O hydrogen bonds involving the heterocycle N-H group, respectively. The antibacterial activities of the ligand and complexes were tested against seven kinds of bacteria. The results show that the complexes 1 and 2 possess inhibiting effects. |
Keywords: Ni(Ⅱ)Complex crystal structure hydrogen bonds antibactenal activity |
投稿时间:2013-05-17 修订日期:2013-10-31 |
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张奇龙,冯广卫,王丽,王正,朱必学.基于Schiff碱及咪唑类配体的镍(Ⅱ)配合物的合成、结构及其抑菌活性研究[J].无机化学学报,2014,30(5):1025-1030. |
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