2-(2-Pyridylamino)pyridinium chloride phosphorous acid: one-dimensional hydrogen-bonded and π–π stacked supramolecular chains

Abstract

In the crystal structure of the title compound, C10H10N3+·Cl−·[P(O)(OH)2H], the chloride ion and phospho­rous acid form a one-dimensional hydrogen-bonded chain, while the 2-(2-pyridylamino)pyridinium cations form a second chain through π–π stacking. The two parallel chains are connected via a PO⋯H—N hydrogen bond and a weak pyridinium-to-chloride inter­action.