Mixed ligand complexes have a great deal of attention towards more biological macro cyclic systems. They have been synthesized and characterized by microanalyses, spectroscopic and room temperature magnetic suspectibility measurements. The microanalyses data is satisfactory with the formation of the prepared complexes. The synthesis and characterization of two new macrocyclic mononuclear transition metal complexes derived from the 1, 10 phenanthroline with benzoate. The infrared spectra of the complexes reveal the involvement of the donor groups of the selected aromatic compounds attached to the mixed ligand complexes.