A new Fe-azo complex dyestuff was synthesized by complexing iron salt with the pre-dyestuff that was prepared from the o-aminophenolsulfonic acid and Cl-substituted pyrazolone.
Synthesis, Characterization and Structure of Supramolecular Complexes of Hydrogen-bonding Connected with 4-acyl Pyrazolone and Imidazole, 2, 2 '-bipyridine and 4, 4' -bipyridine.