Synthesis, characterization and biological activity of some metal complexes of benzoylacetone Schiff base

Tahani Ibrahem Kashar


 N-anilinoacetohydrazo  benzoylacetone (H2L) and their  manganese (II), cobalt(II), nickel(II), copper(II) and zinc(II) complexes have been synthesized and characterized by IR, electronic spectra, molar conductivities and magnetic susceptibilities .Binuclear complexes with molar ratios of( 2:1) (M:L) are formed.

 IR spectra show that the ligand (H2L) coordinated to the metal ions in a tetradentate manner with O2N2 doner sites in Mn(II),Co(II),Ni(II) andZn(II) complexes while Cu(II) complexes the ligand coordinated as didentate via NO. The electronic absorption spectra and magnetic susceptibility measurements show that  all the complexes  were separated as octahedral structure.The copper (II) complexes shows higher antibacterial activity  towards G+ve bacteria (Bacillas subtilis )  than the ligand and  other complexes while Mn (II) complex  shows higher antifungal activity.

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