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

Abstract

The title salt, C14H16N+·C6H7AsNO3 −·H2O or [(C6H5CH2)2NH2][H2NC6H4As(OH)O2]·H2O, (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 P21/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, –NH2 and –As(OH)O3 functions, and H2O, respectively, lead to a three-dimensional network.