In this study, heterocyclic Schiff base ligands derived from 2-amino-4,6-dihydroxypyrimidine and 2-hydroxy-1-naphthaldehyde (L1) were synthesized. These ligands were used in the synthesis of Fe(III) complexes. The synthesized compounds were characterized using FT-IR, 1H-NMR and UV-Vis techniques for the ligands, and TLC, molar conductivity and magnetic susceptibility measurements for the corresponding complexes. The General formula of complexes is [M(L1)2]2H2O. The complexes are paramagnetic in nature. The results of the molar conductivity measurements indicated that in (DMSO) the complexes [Fe (L1)2]2H2O is electrolyte with a molar ratio (1:1). The geometry of complexes is octahedral. The ligands are bidentate (L1) due to the phenolic (OH) and azomethine nitrogens. The ligands and their complexes were investigated for antifungal and antibacterial activity against Aspergillus niger, Penicillium chrysogenum, Fusarium moneriforme, Aspergillus flavus, as well as Escherichia coli, Salmonella typhi, Staphylococcus aureus, and Bacillus subtilis. The results showed that the complex exhibited excellent antifungal and antibacterial effects.
