Spectrophotometric Studies of N-Benzylideneaniline Ligand and its Nickel Complex

Spectrophotometry is based on the measurement of the absorbance for monochromatic light passing through the solution containing the substance to be determined. Spectrophotometric methods can particularly be used for studying complexation equilibria and determination of the number of complexforming constituents as it is suited to the selective determination of very small concentrations of species without changing the composition of the solution. Schiff base ligand was synthesized using benzaldehyde and aniline to form a metal complex with the target analyte (Ni). The melting point and electrical conductivity of the synthesized nickel complex were 175.6C and 84x10Ώcmrespectively and the maximum absorbance at 360nm was 0.60. The complex was characterized using different spectroscopic techniques. The peak in FT-IR spectra at 1625.2 cm confirmed the (C=N) stretching vibration. The C and H NMR spectra showed 193.8 and 10.0 ppm respectively of (CH=N) which was assigned to the azomethine carbon atom and reveals a plausible structure of the complex.