In this project, the reaction between para-amino benzoic acid (PABA) as a ligand and some intermediate metals has been studied. First, the metal complexes of cadmium (II), manganese (II), nickel (II), zinc (II) and copper (II) were synthesized with the para-amino benzoic acid drug ligand. Then the 4-nitrofenyl Cyanamid ligand was added to them so that [Cd (PABA) 2 (PCYD) 2 ], [Mn (PABA) 2 (PCYD) 2 ], [Zn (PABA) 2 (PCYD 2 )], [Cu(PABA) 2 (PCYD) 2 ] and [Ni(PABA) 2 (PCYD) 2 ] complexes were synthesized and identified with analytical methods and IR and UV-Vis vibrating spectroscopy and magnetic resonance of the core ( 1 H-NMR). Subsequently, biological studies were conducted to investigate antibacterial properties against gram-positive and gram-negative bacteria, and some of these complexes exhibited antibacterial properties. Since para-amino benzoic acid is used as an effective ingredient in sunscreen, it seems that with the addition of the PCYD ligand, improvement has been created to absorb more sunlight in synthetic complexes.