Tautomerism Modulation in 4-Hydroxyquinoline through Incorporation of Nitro-group

The present data showed the FID (for NMR spectra) and output (DFT-calculations) documents to study the tautomerism of the 4-hydroxyquinoline and their nitro-substituted 4-hydroxyquinolines. Six 4-hydroxyquinoline compounds and a 4-alcoxy-quinoline were analyzed from NMR spectroscopic study and DFT-calculations. Effect of solvent was analyzed.