Synthesis and Characterization of Some Copper (II) Complexes with New Schiff Bases Ligands

Abstract

The present work include preparation of some transition metal complexes Cu(II) with Schiff base ligands L1 (benzylideneamino)pyrimidin-2(1H)-one) L, L2(Z)-4-((2hydroxybenzylidene)amino)pyrimidin-2(1H)-one) L2 and L3 4,4'-((1E,1'E)-pentane-2,4diylidenebis(azanylylidene))bis(pyrimidin-2(1H)-one) (pdp). The ligands were prepared from condensation reaction of the benzaldehyde, Salicyaldehyde and Acetylacetone with cytosine respectively. These compounds were characterized by elemental analysis, molar conductivity; magnetic susceptibility measurements, NMR spectroscopy for ligand, electronic and infrared spectroscopy. These complexes were classified into two classes: 1-[CuL1Cl2] , [CuL2Cl2] , [CuL3Cl2] 2-[Cu(L2)2Cl2] , [Cu(L2)2Cl2] , [Cu(L3)2Cl2] Low conductance value showed that all the prepared complexes are non – electrolyte and the magnetic susceptibility measurements, electronic spectroscopy showed that all the prepared complexes of Type (1) have a square planar geometry for copper complexes, the complexes of Type (2) have an octahedral geometry.