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Synthesis Characterization and Antimicrobial Activity Studies of Some Transition Metal Complexes Derived from 3-Chloro-N′-(1E)-(2-hydroxy phenyl)methylene-6-methoxy-1-benzothiophene-2-carbohydrazide

机译:3-氯-N-(1E)-(2-羟基苯基)亚甲基 -6-甲氧基-1-苯并噻吩-2-碳酰肼衍生的某些过渡金属配合物的合成表征及抑菌活性研究

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摘要

A series of new coordination complexes of Cu(II), Co(II), Ni(II), Zn(II), Hg(II), Mn(II), and Fe(III) with the Schiff base 3-chloro-N′-[(1E)-(2-hydroxy phenyl)methylene]-6-methoxy-1-benzothiophene-2-carbohydrazide (HL) have been synthesized and characterized by elemental analysis, electrical conductivity measurements, IR spectra, 1H NMR, mass spectral data, electronic spectra, magnetic susceptibility, ESR spectra, TGA, and Powder XRD data. The Schiff base behaves as tridentate ONO donor ligand and forms the complexes of the type ML2 (metal-ligand) stoichiometry for Cu(II), Co(II), Ni(II), and Mn(II) complexes and ML stoichiometry for Zn(II), Hg(II), and Fe(III) complexes. All the complexes are colored and nonelectrolytes. It is found that Cu(II), Co(II), Ni(II), Mn(II) and Fe(III) complexes have exhibited octahedral geometry whereas Zn(II) and Hg(II) complexes exhibited tetrahedral geometry. The ligand and its metal complexes have been screened for their antibacterial activity against E. coli and S. aureus and antifungal activity against A. niger and A. flavus.
机译:Cu(II),Co(II),Ni(II),Zn(II),Hg(II),Mn(II)和Fe(III)与席夫碱3-氯-的一系列新的配位化合物已合成N'-[((1E)-(2-羟基苯基)亚甲基] -6-甲氧基-1-苯并噻吩-2-碳酰肼(HL),并通过元素分析,电导率测量,IR光谱, 1 H NMR,质谱数据,电子光谱,磁化率,ESR光谱,TGA和粉末XRD数据。 Schiff碱表现为三齿ONO供体配体,形成Cu(II),Co(II),Ni(II)和Mn(II)配合物的ML2(金属-配体)化学计量的配合物和Zn形成ML的化学计量(II),Hg(II)和Fe(III)配合物。所有的配合物都是有色和非电解质的。发现Cu(II),Co(II),Ni(II),Mn(II)和Fe(III)配合物表现出八面体几何形状,而Zn(II)和Hg(II)配合物表现出四面体几何形状。已经针对配体及其金属配合物针对大肠杆菌和金黄色葡萄球菌的抗菌活性以及针对黑曲霉和黄曲霉的抗菌活性进行了筛选。

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