However, in the IR of the ligand, the C=O was observed at a lower wavenumber of 1167 cm -1 due to the participation of the oxygen in the coordination. The decrease of the band from 1567cm -1 (spectrum of the complex) to 1536cm -1 (in the spectrum of the ligand) is an indication that the free and azomethine nitrogen has been used in coordination. The extra bands 487 cm -1 and 416 cm -1 which is due to the coordination of the free and azomethine nitrogen further supports the formation of the complex.