Synthesis, characterization and in vitro biological activities of new water-soluble copper(II), zinc(II), and nickel(II) complexes with sulfonato-substituted Schiff base ligand
The ligand and its copper and nickel complexes had good solubility in water. All compounds were stable in water at acidic and basic pH. The free ligand displayed the strongest radical scavenging activity. The copper complex was found to be the most active compound against K562 cells.