Sodium 4-Hydroxy-3-nitrobenzenesulfonate Trihydrate

Article abstract of DOI:10.1107/S0108270195000849

The title compound, Na⁺*C6H4NO6S^-*3H2O, crystallizes in double layers with the nearly planar organic anions oriented parallel to one another and the sulfonate groups directed towards the center of the sandwich, where they are bonded to Na⁺ cations.Each Na⁺ cation bonds to six O atoms in a distorted octahedral geometry.The coordination sphere contains two sulfonate O atoms, one nitro O atom from a different anion and three water molecules.There are hydrogen bonds involving the water molecules, the sulfonate O atoms and the hydroxyl groups.