Abstract
In the title hydrated molecular salt, C(6)H(7)ClN(+)center dot C(2)HO(4)(-)center dot 0.5H(2)O, the water O atom lies on a crystallographic twofold axis. In the crystal, the anions are linked by O-H center dot center dot center dot O hydrogen bonds, forming chains propagating along the b axis. These chains are interconnected through O-H center dot center dot center dot O hydrogen bonds from the water molecules and N-H center dot center dot center dot O hydrogen bonds from the cations, building layers parallel to the ab plane.