Spectral and solvation effect studies on charge transfer complex of 2, 6-diaminopyridine with chloranilic acid

► Charge transfer complex formation between 2,6-DAP and CLA has been investigated. ► The formation constant and molecular extinction coefficient have been estimated. ► The molecular composition has been identified by different methods. ► The solid complex [(2,6-DAP)3(CLA)2] has been isolated and characterized. ► The characterizations included elemental analysis, FTIR and 1H NMR measurements.