Synthesis, characterisation and antimicrobial studies of Copper(II) mixed ligand complexes of ?-diketone with, N, N, N?, N?--tetramethylethylenediamine

Abstract

Mixed ligand copper(II) complexes of ?-diketones [dibenzoylmethane (dbmH), benzoylacetone (bzacH) and acetylacetone (acacH)] and N, N, N?, N?-Tetramethylethylenediamine (tmen) have been synthesised and characterised by metal analysis, conductance measurement, magnetic susceptibility measurement, infrared spectroscopy, electronic spectroscopy and antimicrobial studies. The ?-diketones and N,N,N?,N?-Tetramethylethylenediamine both acted as bidentate ligands with the ?-diketones coordinating through the enolic oxygen, while tmen coordinated through the two nitrogen atoms. The electronic spectra measurements are corroborative of five-coordinate square pyramidal geometry for the complexes. The magnetic moments for the complexes were observed in the range 1.78-2.10 B.M, which is in support of a normal paramagnetic moment. The antimicrobial activities of the compounds, suggested their potential utilization as antimicrobial agents.