Crystal structure of di­benzyl­ammonium hydrogen (4-amino­phen­yl)arsonate monohydrate

The title salt, C(14)H(16)N(+)·C(6)H(7)AsNO(3) (−)·H(2)O or [(C(6)H(5)CH(2))(2)NH(2)][H(2)NC(6)H(4)As(OH)O(2)]·H(2)O, (I), was synthesized by mixing an aqueous solution of (4-amino­phenyl)­arsonic acid with an ethano­lic solution of di­benzyl­amine at room temperature. Compound I crystallizes in the monoclinic P2(1)/c space group. The three components forming I are linked via N—H⋯O and O—H⋯O inter­molecular hydrogen bonds, resulting in the propagation of an infinite zigzag chain. Additional weak inter­actions between neighbouring chains, such as π–π and N—H⋯O contacts, involving phenyl rings, –NH(2) and –As(OH)O(3) functions, and H(2)O, respectively, lead to a three-dimensional network.