Abstract
A new series of metal complexes of Ti(IV), V(IV), Y(III), Zr(IV), Ce(IV) and U(VI) with levofloxacin (Levo) were synthesized and characterized by elemental analysis, molar conductivity, magnetic moment measurements, UV–Vis, FT-IR and 1H NMR, XRD as well as TG-DTG techniques. The data indicated that levofloxacin reacts as a bidentate ligand chelate to the metal ion through the pyridone oxygen and one carboxylato oxygen. The thermal dehydration and decomposition of the complexes were studied kinetically using Coats–Redfern and Horowitz–Metzger methods, and the thermodynamic data reflected the thermal stability for all complexes. The calculated bond length and the bond stretching force constant, F(U=O), values for UO2 bond are 1.86 Å and 690.67 N m−1. The biological activities of the levofloxacin, meta-salts and their metal complexes were assayed against different bacterial and fungal species as well as their effect on degradation of calf thymus DNA.
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Sadeek, S.A., El-Shwiniy, W.H. Preparation, structural characterization and biological studies of some new levofloxacin metal complexes. J IRAN CHEM SOC 14, 1711–1723 (2017). https://doi.org/10.1007/s13738-017-1112-2
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DOI: https://doi.org/10.1007/s13738-017-1112-2