2,4-Dichloroanilinium 4-chlorobenzenesulfonate monohydrate

Abstract

The asymmetric unit of the title compound, C6H6Cl2N+·C6H4ClO3S−·H2O, contains two 2,4-dichloro­anilinium cations, two 4-chloro­phenyl­sulfonate anions and two water mol­ecules. The three H atoms of the positively charged NH3 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 NH3 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(H2O) and N—H⋯O(S)⋯H—O(H2O) (three-centre) hydrogen bonding, the chains running along the c axis.