Synthesis and characterization of new azo ligand and its Co II Cu II Zn II and Ni II complexes

OpenAlex İngilizce

This study describe the synthesis and characterization of new azo ligand, 5-hydroxy-4-(2,4-dihydroxyphenylazo)-2,7-naphthalene disulfonic acid disodium salt (L).The Cu(II), Zn(II), Ni(II) and Co(II) complexes of the azo ligand were prepared and characterized by infrared, UVvisible, 1 H and 13 C NMR spectra, atomic absorption spectroscopy, mass spectrometry, elemental analyses, thermogravimetric analysis, conductivity and magnetic measurements.The results suggest that the complexes have a 1:1 (metal:ligand) molar ratio, involving mononuclear azo ligand with an ONO donor set.Metal ion uptake studies were conducted with a batch technique.The results indicate that the azo ligand has high thermal stability and good metal extraction capacity.