catena-Poly[[diaqua­strontium]-bis­(μ-2-bromo­benzoato)-κ(2) O,O′:O′;κ(3) O:O,O′]

The hydro­thermal reaction of SrCO(3) and 2-bromo­benzoic acid in CH(3)OH–H(2)O afforded the Sr(II) title polymeric complex, [Sr(C(7)H(4)BrO(2))(2)(H(2)O)(2)](n). Within the coordination sphere, the Sr(II) ion is located on a crystallographic twofold axis, and is coordinated by eight O atoms from two water mol­ecules and four carboxyl­ate groups of 2-bromo­benzoate ligands in an irregular coordination geometry. Two μ(3)-carboxyl­ate groups of the 2-bromo­benzoate anions bridge two symmetry-related Sr(II) atoms, giving rise to a chain structure extending along [001]. The polymeric chains are connected via O—H⋯O and O—H⋯Br hydrogen bonds inter­actions into a three-dimensional supra­molecular network.