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Global Journal of Inorganic Chemistry 2012, 3: 10
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Research Article
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Metal-assisted assembly of dinuclear metal(II) dithiocarbamate Schiff-base macrocyclic complexes: Synthesis and biological studies
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Hasan A. Hasan, Enaam I. Yousif, Mohamad J. Al-Jeboori
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Department of Chemistry, College of Education, Ibn Al-Haitham, University of Baghdad,
P. O. 4150, Adamiyah, Baghdad, Iraq
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Abstract |
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The synthesis of dinuclear transition metal(II) dithiocarbamate (dtc)-based macrocyclic and their characterisation are described. The bimetallic dithiocarbamate-based complexes were prepared via a one-pot reaction using bis-amine-Schiff base, CS2, KOH and metal chloride. The mode of bonding and overall geometry of the dinuclear complexes were determined through IR, UV-Vis, NMR, and mass spectral studies, magnetic moment measurements, elemental analysis, metal content, and conductance. These studies revealed binuclear complexes of the general formulae [M2(L)2] with tetrahedral geometries for CoII and ZnII complexes, while square planar geometries have been suggested for NiII and CuII complexes. Biological activity of the ligand and its metal complexes against gram positive bacterial strain Staphylococcus aureus and gram negative bacteria Escherichia coli revealed that the metal complexes become more potentially resistive to the microbial activities as compared to the free ligand. However, these metal complexes do not exhibit any effects on the activity of Pseudomonas aeruginosa bacteria. There is therefore no inhibition zone.
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Keywords |
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Dithiocarbamates; Transition metals; One-pot reaction; Structural and biological studies
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