Background: In recent years, in situ reaction monitoring has grown in use for this purpose. ReactIR is one of the in-situ reaction monitoring techniques used to understand chemical reactions. The reductive amination of Schiff base formed in situ by treating salicylaldehyde and diethylene triamine by using sodium borohydride in methanol was completed within 28 minutes, which was monitored by ReactIR. Materials and Methods: Zinc complexes of diethylene triamine, Schiff base, and their reductive amination products were synthesized using 1:1, 1:2, and 1:3 mole ratios of ligand-zinc chloride at room temperature. Results and conclusion: The formation of the product was confirmed by IR spectra. All these complexes showed photoluminescence in the blue region.