Synthesis of Cobalt-Complex Azo Dye from 2, 2[Benzene-1, 3-diyl di-(E)-diazene-2, 1-diyl] bis (4-nitroaniline)

International audienceThe aim of this investigation is to carry out the synthesis of bisazo dye 2,​2[benzene-​1,​3-​diyl di(E)​diazene 2,​1-​diyl]​bis(4-​nitroaniline)​. The synthesis was conducted through the diazotization and coupling of m-​phenylene diamine with 4-​nitroanline leading to the prodn. of azo metal (II) complex of Cobalt. Characterization of the ligand and the metal complex was carried out using various 34hysic-​chem. techniques. The metal chelates have a metal to ligand ratio of 1:1. The synthesized azo metal (II) complex dye had a potential application for high d. optical recording media due to their good absorption spectra and high thermal stability