Organotin Complexes Based on the Interaction of 2-(Benzylidene Amino) Acetic Acid With Organotin Chlorides. Synthesis, Structure and Antioxidant Activity

Abstract

In this work, 2-(benzylidene amino) acetic acid was prepared by reflexing reaction of benzaldehyde with glycine, then this prepared and characterized compound was used as ligand to prepare tri and di-organotin complexes by condensation reaction with the corresponding organotin chloride salts. The complexes were identified by different techniques, such as infrared spectra, (tin and proton) magnetic resonance and elemental analyses. The antioxidant activity of 2-(benzylidene amino) acetic acid and prepared complexes were studied by two different methods; Free radical scavenging activity (DPPH) and CUPRRAC methods. Tri and di-tin complexes gave high percentage inhibition than ligand with both methods due to tin moiety, also Triphenyltin carboxylate complex was the best compared with the others