Poly[μ(2)-aqua-aqua­(μ(3)-1H-benzimidazole-5,6-dicarboxyl­ato-κ(3) N (3):O (5):O (5′))manganese(II)]

In the title complex, [Mn(C(9)H(4)N(2)O(4))(H(2)O)(2)](n), the Mn(II) atom is in a distorted octa­hedral coordination completed by one N atom from one 1H-benzimidazole-5,6-dicarboxyl­ate ligand, two O atoms from two different 1H-benzimidazole-5,6-dicarboxyl­ate ligands, and three O atoms from three water mol­ecules. Two bridging water mol­ecules and two bridging carboxyl­ate groups from a 1H-benzimidazole-5,6-dicarboxyl­ate ligand connect two Mn(II) ions into a dimeric structure. In the crystal, extensive inter­molecular O—H⋯O, N—H⋯O and C—H⋯O hydrogen bonding forms a three-dimensional network.