Synthesis, Spectroscopic, Thermal Characterization and Biological Activity of (E)-4-(4-Methoxybenzylideneamino)-N-(5-Methylisoxazol-3-Yl) Benzenesulfonamide and Its Copper Complexes.

A Schiff base (E)-4-(4-methoxybenzylideneamino)-N-(5-methylis-oxazol-3-yl) benzene-sulfonamide (C₁₈H₁₇N₃O₄S), and its copper complex were synthesized and the structures elucidated in the bases of elemental analysis, ¹HNMR, UV–VIS, IR, Mass spectroscopy, magnetic susceptibility, thermal analysis and conductance measurements. The studies indicate an octahedral structure for the complexes with the (C₂₂H₂₇N₃O₁₀SCu) formula. The I.R. spectra suggest that the ligand acts as a tridentate (NNO) donor. Also, the biological activity of the Schiff base and its Cu complex are biologically active.