dc.description.abstract |
In the realm of coordination chemistry, the manipulation of metal ion properties through diverse
ligands is pivotal, encompassing the stabilization of various oxidation states and the adjustment
of solvophilicity, electrophilic, and nucleophilic characteristics to tailor medicinal properties.
This endeavor drives researchers to dedicate their time, energy, and resources towards the
development of antibacterial agents with novel modes of action. In this study, two Ag+
complexes, [NO
3
Ag(2,2’-bpy)] and [NO
3
Ag(4,4’-bpy)
2
], were synthesized employing 2,2’bipyridine
(2,2’-bpy) and bis-4,4’-bipyridine(4,4’-bpy)
2
as ligands, respectively. The synthesis
validity was confirmed through conductance measurements and spectroscopic analyses (FT-IR
and UV/Vis), with the metal content determined via thermo gravimetric assessment. These
analyses suggest a planar triangular geometry for the synthesized complexes.
Subsequently, the in vitro antibacterial efficacy of these complexes was assessed against two
Gram-positive bacteria (Staphylococcus aureus and Staphylococcu. epidermidis ) and two
Gram-negative bacteria (Escherichia coli and Klebsiella pneumoniae), with their activities
benchmarked against commercially available tetracycline. Notably, both complexes exhibited
significant activity against all tested pathogenic strains, with [NO
3
Ag(2,2’-bpy)] demonstrating
superior efficacy compared to the ligand, starting salt, and the second complex [NO
3
Ag(4,4’bpy)
2
]. While the activities of these complexes were lower than that of the reference tetracycline,
subsequent in vivo cytotoxicity assessments suggest their potential as antibiotic candidates,
particularly against the tested bacterial strain |
en_US |