Poly[[bis(µ(2)-4-amino-benzene-sul-fon-ato-κN:O)diaqua-manganese(II)] dihydrate].

The title compound, {[Mn(NH(2)C(6)H(4)SO(3))(2)(H(2)O)(2)]·2H(2)O}(n), was prepared under mild hydro-thermal conditions. The unique Mn(II) ion is located on a crystallographic inversion center and is coordinated by two -NH(2) and two -SO(3) groups from four 4-amino-benzene-sulfonate ligands and by two water mol-ecules in the axial positions, forming a slightly distorted octa-hedral coordination environment. The 4-amino-benzene-sulfonate anions behave as µ(2)-bridging ligands to produce a two-dimensional structure. In the crystal structure, inter-molecular N-H⋯O, O-H⋯O and C-H⋯O hydrogen bonds link the layers into a three-dimensional network.