Synthesis and Characterization of Metal Complex of an Azo Dye Based on Acid Orange 7

Authors: B. Myek, M. L. Batari, J. O. Orijajogun and M. A. Aboki Received 20 May 2020/Accepted 29 June 2020 Azo dye which serve as a ligand was prepared by diazotization of primary aromatic amine to form the diazonium salt. The relatively unstable diazonium salt thus formed was reacted with a coupling component. Complex of this ligand has been synthesized and characterized by IR spectroscopy and UV- Visible absorption spectroscopy. The absorption maximum of the ligand was at 483.50nm. Upon binding with the Fe(II) the band shifted to 479.50nm,  indicates an interaction of the Fe(II)  with the ligand. The ligand synthesized is soluble in water as well as its metal complex. The colour of the ligand is orange while that of the complex is brown. The prepared complex is stable at room temperature