Preparation, Characterization and Study of 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

Author(s): Rehab K. Al-Shemary and Amina A. Fayad

A new two Schiff bases derivatives was synthesized and characterized with studying their biological activity and employed Manganese(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) benzoic acid and (E)-4-(2-hydroxy-1,2- diphenylethylideneamino)-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one. The first ligand were obtained through are action of Benzoin and 4-Aminoantipyrine while the second result from the condensation of the first ligand with 2-aminobenzoic 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, Bacillussubtilis and Pseudomonasaeroginosa.

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