Poly[hemi-μ-aqua-[μ-2-(2-bromobenzenesulfonamido)benzoato]sodium(I)].

The asymmetric unit of the title compound, Na(C(13)H(9)BrNO(4)S)(H(2)O)(0.5), contains two Na(+) cations, two substituted benzoate anions and one water molecule of crystallization. The Na(+) cations are coordinated in an octa-hedral geometry by two carboxyl-ate O atoms, two sulfonyl O atoms and two water O atoms. The latter two ligands occupy trans positions. The polymeric network structure of the title complex is characterized by a layered assembly parallel to (001) and is further consolidated by N-H⋯O, O-H⋯O and C-H⋯O hydrogen-bonding inter-actions.