SYNTHESIS, SYNERGISTIC EFFECT AND SCAVENGING ACTIVITY OF SCHIFF BASE LIGANDS

摘要

The ligands HL1/HL4 were synthesized by Schiff base condensation of o-hydroxyacetophenone/thiophene-2-carboxylic acid with phenyl hydrazine in 1:1 mole ratio and the ligands HL2, HL3 were synthesized using o-hydroxyacetophenone and corresponding diamine (N, N-bis(3-aminopropyl)methylamine/N, N-bis(3-aminopropyl)-1,2-ethylenedi ammine) in 2 : 1 mole ratio.All the ligands were characterized by electronic, IR and 1H NMR spectral studies.IR and 1H NMR spectral studies confirmed the formation of azomethine (HC=N-) group.The scavenging activity for the ligands were carried out by DPPH method.The ligands HL1 and HL4 had higher than other ligands.