Enhanced the Antioxidant Activity of 1-Amino-2-naphthol-4-Sulfonic acid by Complexation with Organotin(IV) Compounds

Abstract

This study focuses on the measure the antioxidant activity by two methods: Free radical scavenging activity (DPPH) andCUPRAC Method fordi and tri- organotin(IV) compounds and contrasts whether the antioxidant activity of 1-Amino-2-naphthol-4-Sulfonicacid (L)and it’s organotin complexes have increased.Four organotin complexes (1-4)were successfully prepared by the condensations reactions of 1-Amino-2-naphthol-4-Sulfonicacid as aligandwih di and tri-organotin(IV)compounds.These prepared complexes were characterized by deferential techniques, infrared spectroscopy (FTIR), ¹¹⁹Sn-nuclear magnetic resonance (NMR) and  ¹H-NMR techniques. Organotin(IV) complexes showed  higher antioxidant activity than aligand, due  the metal moiety, while complex 3 showed higher antioxidant activity than other complexes.