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Synthesis, crystal structure, fluorescence and antimicrobial activity of a series of rare-earth complexes based on indolebutyric acid

机译:基于吲哚丁酸的一系列稀土配合物的合成,晶体结构,荧光和抗微生物活性

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摘要

A series of lanthanide complexes, namely, [Ln(IBA)(3)(phen)]center dot(Hphen)center dot NO3 center dot xH(2)O center dot yEtOH (1-6) (Ln = La (1), x = 1, y = 0.5; Pr (2), x = 2, y = 0; Eu (3), x = 2, y = 0; Gd (4), x = 2, y = 0; Tb (5), x = 1.5, y = 0; Yb (6), x = 2, y = 0. IBA = indole-3-butyric acid, phen = 1,10-phenanthroline), [Sm(IBA)(2)(phen)(2)]center dot NO3 (7) and Ln(IBA)(3)(phen) (8-10) (Ln = Eu (8); Tb (9); Yb (10)), was synthesized successfully. All the complexes were characterized by elemental analysis, IR spectroscopy, UV-vis spectrophotometry, thermal gravimetric technology, powder X-ray diffraction and single-crystal X-ray diffraction. Structural analyses revealed that each lanthanide atom has a distorted tricapped trigonal prism geometry with a nine-coordinate mode in complexes 1-9 and has a bicapped trigonal prism geometry with an eight-coordinate mode in complex 10. There are three kinds of coordination modes of IBA ligands in complexes 1-6 and 8, 9: a mu(1)-eta(1):eta(1) bidentate chelating mode, a mu(2)-eta(1):eta(1) double monodentate bridging mode and a mu(2)-eta(1):eta(2) bridging mode. For complex 7, there are two kinds of coordination mode of IBA ligands: a mu 2-eta(1):eta(1) and a mu(2)-eta(1):eta(2) bridging modes. For complex 10, there are also two kinds of coordination mode of IBA ligands, a mu(2)-eta(1):eta(1) double monodentate bridging mode and a mu(1)-eta(1):eta(1) bidentate chelating mode. Adjacent lanthanide atoms are linked via the mu(2)-bridging carboxylate groups of the IBA ligands to generate a binuclear building unit. In addition, their photoluminescent characterization and antimicrobial activity against the fungi Golden staph (G.S), Pseudomonas aeruginosa (P.A), Escherichia coli (E.C), Bacillus subtillis (B.S) and Candida albicans (C.A) were studied.
机译:一系列镧系络合物,即,[LN(IBA)(3)(phen)的]中心点(Hphen)中心点NO3中心点XH(2)O中心点yEtOH(1-6)(LN = La中的(1)中,x = 1,Y = 0.5; PR(2)中,x = 2,y = 0时;铕(3)中,x = 2,y = 0时;钆(4)中,x = 2,y = 0时;铽( 5)中,x = 1.5,Y = 0;镱(6)中,x = 2,Y = 0。IBA =吲哚-3-丁酸,苯= 1,10-菲咯啉),[SM(IBA)(2) (phen)的(2)]中心点NO3(7)和LN(IBA)(3)(苯)(8-10)(LN =铕(8);铽(9);镱(10)),合成成功地。通过元素分析,红外光谱,UV-Vis分光光度法,热重技术,粉末X射线衍射和单晶X射线衍射所有的配合物进行了表征。结构分析显示,每一个镧系元素原子具有扭曲三冠三角棱柱几何形状,在配合物的九坐标模式1-9和具有双帽三角与复杂10.八坐标模式棱镜几何有三种的配位模式IBA配体络合物中1-6和8,9:一个亩(1)-ETA(1):ETA(1)的二齿螯合模式,亩(2)-ETA(1):ETA(1)的单齿双桥接模式和亩(2)-ETA(1):ETA(2)桥接模式。对于复杂7,有两种的IBA配体的配位模式:一种μ2-ETA(1):ETA(1)和一个亩(2)-ETA(1):的桥接模式ETA(2)。对于复杂的10,也有2种IBA配体的配位模式,亩(2)-ETA(1):ETA(1)的单齿双桥接模式和亩(1)-ETA(1):ETA(1 )二齿螯合模式。相邻的镧系元素原子通过(2)-bridging IBA的羧酸酯基团的配体,以产生双核建筑物单元的亩相连。此外,其光致发光特性和抗微生物活性的真菌金色葡萄球菌(G.S),铜绿假单胞菌(P.A),大肠埃希氏菌(E.C),枯草芽孢杆菌(B.S)和白色念珠菌(C.A)进行了研究。

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  • 来源
    《RSC Advances》 |2015年第126期|共12页
  • 作者单位

    Liaoning Normal Univ Coll Chem &

    Chem Engn Dalian 116029 Peoples R China;

    Liaoning Normal Univ Coll Chem &

    Chem Engn Dalian 116029 Peoples R China;

    Dalian Med Univ Dept Biochem &

    Mol Biol Dalian 116044 Peoples R China;

    Liaoning Normal Univ Coll Chem &

    Chem Engn Dalian 116029 Peoples R China;

    Dalian Med Univ Dept Biochem &

    Mol Biol Dalian 116044 Peoples R China;

    Liaoning Normal Univ Coll Chem &

    Chem Engn Dalian 116029 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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