Abstract
A new complexes of Ni(II), Pd(II), and Pt(II) have been synthesized from the reaction of Azo-Schiff base ligand (L1) that was prepared by the condensation firstly of salicylaldehyde with ethylene diamine in a 1:2 molar ratio and the prepared imine compound (S1) reacted with 2,5-dichloro aniline, and were employed in the preparation of complexes containing the metal ions Ni(II), Pd(II), and Pt(II). The structural characteristics of the synthesized compounds were investigated using UV-Vis, IR and NMR, molar conductance, elemental analysis, and mass spectroscopy. The results of the elemental analysis point to a 1:1 [M:L] stoichiometry. According to molar conductance studies, none of the prepared end products are electrolytic in nature. The complexes of Ni(II), Pd(II), and Pt(II) may have square planer geometry, according to spectral investigations. Then Pd(II), Ni(II), and Pt(II) complexes were evaluated for antimicrobial activity against different types strains of Gram-negative [Escherichia coli (ATCC 25922)] and positive bacteria [Staphylococcus aureus (ATCC 25923)] and showed good significant against these bacteria. The cytotoxic effect of the palladium complex on the prostatic malignant cell was examined via the PC3 cell line studied against normal cell WRL-68. The molecular docking of target microorganisms of these complexes will be studied by using MOE software.
 KEY WORDS: Salen ligand, Nickel(II), Palladium(II), Platinum(II), Complexes, bis azo-Schiff base
 Bull. Chem. Soc. Ethiop. 2024, 38(1), 99-111. DOI: https://dx.doi.org/10.4314/bcse.v38i1.8
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