Synthesis and Characterization of New Cobalt(III) and Nickel(II) Complexes Derived from Acetylacetone and 2-Aminopyridine: a New Precursor for Preparation of NiO Nanoparticles

Resumo

2-Aminopyridine (2-ampy) and acetylacetone has been allowed to react with the Ni(II) and Co(II) metal salts to give complexes of the type [Co^III(acac)₂(2-ampy)₂]ClO₄ (1), [Ni^II(acac)₂(2-ampy)H₂O]ClO₄(2-ampyH) (2), and [Ni^II(acac)₂(2-ampy)H₂O] (3). The crystal structures of the complexes have been determined by X-ray diffraction. The data of antimicrobial analysis have indicated that the complexes have rather good activities against bacterial species. Through investigating the antioxidant activity by FRAP and anti-hemolytic assay, all the metal complexes have shown an acceptable activity. In addition, NiO nanoparticles have been prepared by the combustion synthesis method of complex 3 at 700°C for 8 h.