Preparation, Characterization and Study the Biological Activity of New No2, Novel N2o2 Ligands and Their Complexes with [Co (Ii), Cu (Ii), Ni (Ii), Mn (Ii) and Hg (Ii)] Ions

A new two Schiff bases derivatives was synthesized and characterized with studying their biological activity and employed anganese (II),Cobalt (II),Nickel(II),Copper(II) and Mercury (II) complexes: 2 – ((Z) – 4 – ((Z)-2-hydroxy-1, 2-diphenylethylideneamino)-1, 5 – dimethyl – 2-phenyl-1H-pyrazol-3(2H)-ylideneamino) benzoicacid and (E)-4-(2-hydroxy-1, 2-diphenylethylideneamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one. The first ligand were obtained through a reaction of Benzoin and 4-Aminoantipyrine while the second result from the condensation of the first ligand with 2-amino benzoic acid. Ten new coordination compounds were synthesized and structurally characterized: [Co(L₁)(Cl)], [Cu(L₁)(Cl)] [Ni(L₁)(Cl)],[Mn(L₁)(Cl)],[Hg(L₁)(Cl)],[Co(L₂)],[Ni(L₂)],[Cu(L₂)], [Mn(L₂)] and [Hg (L₂)]. All of the suggested chemical structures of the prepared ligands and metal complexes are confirmed by using FT- IR, UV, ¹H& ¹³C-NMR spectra. Most of the prepared compounds show antibacterial activity to (Staphylococcus aureus), (Escherichia coli), (Bacillus subtilis) and (Pseudomonas aeroginosa).

Keywords: 2-Aminobenzoicacid, 4-Amino Antipyrine, Benzoin, Biological Activity, Characterization, Schiff Bases