Charge-transfer (CT) complexes formed on the reaction of 2, 2′-bipyridine with some acceptors such as picric acid (HPA) and chloranilic acid (H2CA) have been studied in CHCl3 and MeOH at room temperature. Based on elemental analysis and IR spectra of the solid CT complexes along with the photometric titration curves for the reactions, the data obtained indicate the formation of 1: 1 charge-transfer complexes [(bpyH)(PA)] and [( ...