Abstract
In this article, there are two new levofloxacin (HLevo) complexes were synthesized and spectroscopically discussed. These complexes were prepared in alkaline state (pH = 8) with the 1:1 stoichiometry between zir-conyl(II) or indium(III) chloride and pure HLevo antibiotic drug ligand in mixed solvent equal volumes from methanol and bi-distilled water. The structures interpretation were performed based on the micro analytical (elemental analyses), molar conductance and spectroscopic measurements. It is shown that the deprotonated HLevochelate was coordinated towards Zr-IV and In-III metal ions, this occurs as a bidentate ligand through the oxygen atoms of carboxylate and carbonyl group, respectively. Accordingly, these complexes can be speculated as [ZrO(Lev)(CI)(H2O)]center dot H2O(1) and [In(Lev)(Cl)(2)(H2O)(2)] (2). Through Tranmission Electron Microscopy (TEM) imaging it is demonstrated that the nanoscale particles have a homogeneous distribution across the complex surface. Furthermore, by assessing in vitro antimicrobial activities, the inhibition activity of HLevo drug ligand as well as the associated metal ion complexes were evaluated towards specific types of bacteria and fungi.