2,4-Dichloro­anilinium 4-chloro­benzene­sulfonate monohydrate

The asymmetric unit of the title compound, C(6)H(6)Cl(2)N(+)·C(6)H(4)ClO(3)S(−)·H(2)O, contains two 2,4-dichloro­anilinium cations, two 4-chloro­phenyl­sulfonate anions and two water mol­ecules. The three H atoms of the positively charged NH(3) group have two O atoms of the negatively charged sulfonate anion and one O atom of the water mol­ecule as acceptors. Similarly, the two H atoms of the water mol­ecule have two O atoms of two different negatively charged sulfonate anions as acceptors. Further, one of the O atoms of the sulfonate anion is involved in simultaneous hydrogen bonds with two H atoms, one from the positively charged NH(3) group and the other from the water mol­ecule. In the crystal, mol­ecules are packed into a layer structure through N—H⋯O(S), N—H⋯O(H(2)O) and N—H⋯O(S)⋯H—O(H(2)O) (three-centre) hydrogen bonding, the chains running along the c axis.