Abstract
Uranyl complexes with 1,3-diphenyl-1-(2-hydroxy-anilidino)-1-propylidin-3-one (H2A), 1,3-diphenyl-1-ethanolimine-propylidin-3-one (HB1), 4-phenyl-2-ethanolimino-2-butylidin-4-one (HB2), and 2-ethanolimino-2-pentylidin-4-one (HB3) as ligands were prepared and characterized by elemental analysis, electrical conductivity measurements, magnetic susceptibility determination, mass, IR, and UV/Vis spectroscopy, and thermogravimetry. The complexes can be formulated as [UO2L(H2O)(NO3)]ċnH2O with the exception of UO2-HB1 which has to be written as [UO2L2(H2O)]ċnH2O. The structures of these complexes were fitted using Alchemy III. The thermogravimetric studies suggest the following order of relative thermal stability of the complexes: UO2-H2A>UO2-HB1≈UO2-HB2>UO2-HB3. ΔEact (calculated from the endothermic peaks) of the liberation of H2O of crystallization increases within the order UO2-HB3>UO2-HB1>UO2-HB2>UO2-H2A. The antimicrobial activities of the prepared complexes have been tested.
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