In the current work, azo ligand and its Pd (Ⅱ), Cd Zn (Ⅱ) Hg complexes were synthesized, characterized their spectroscopic characteristics studied. The new was synthesized from coupling reaction between 4,5-bis(4-methoxy phenyl)imidazole diazonium salt of 4-Amino benzoic acid in an alkaline medium at 0-5 ᵒC. metal prepared by metals chlorides. All compounds FT-IR, 1H-NMR, Mass spectral analysis...