Abstract

In the present study, we synthesized Novel ligand and their metal complexes with 8-((2-(2,4-
dinitrophenyl)hydrazono)methyl)-7-hydroxy-4-methyl-2H-chromen-2-one ligand. The colored
complexes were prepared by the addition of chloride salts of Manganese(II), Cobalt(II),
Nickel(II) and Copper(II) to a solution of ligand. In conclusion, the structures of the obtained
complexes were characterized by FT-IR, elemental analysis, UV-spectral studies, conductmetric
and magnetic susceptibility measurements. The synthesized metal complexes were investigated
for biological activities. Enzymatic inhibition activity has been done by using
acetylcholinesterase (AChE) enzyme, antioxidant activity by DPPH assay and also the
antimicrobial studies. All tested metal complexes and ligand reveal effective biological activities.