Abstract
In the title compound, the hydrated tetra-(nitrate) salt of dapsone (4,4'-di-amino-diphenyl-sulfone), 2C12H14N2O2S2+·4NO3-·H2O {alternative name: bis[bis-(4,4'-di-aza-niumylphen-yl) sulfone] tetra-nitrate monohydrate}, the cations are conformationally similar, with comparable dihedral angles between the two benzene rings in each of 70.03 (18) and 69.69 (19)°. In the crystal, mixed cation-anion-water mol-ecule layers lying parallel to the (001) plane are formed through N-H⋯O, O-H⋯O and C-H⋯O hydrogen-bonding inter-actions and these layers are further extended into an overall three-dimensional supra-molecular network structure. Inter-ring π-π inter-actions are also present [minimum ring centroid separation = 3.693 (3) Å].
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