catena-Poly[[[diaqua­manganese(II)]-μ(3)-pyridine-2,3-dicarboxyl­ato-κ(4) N,O (2):O (3):O (3′)] dihydrate]

In the title coordination polymer, {[Mn(C(7)H(3)NO(4))(H(2)O)(2)]·2H(2)O}(n), the Mn(II) ion is coordinated in a distorted octahedral environment by the O atoms of two water mol­ecules, one N and one O atoms of the chelating pyridine-2,3-dicarboxyl­ate (PDC) dianion, and two axial bridging carboxyl­ate O atoms from two adjacent PDC ligands. The fully deprotonated PDC anion acts a μ(3)-bridging ligand, establishing a chain structure along the a axis. These polymeric chains are connected into a three-dimensional framework via several inter­molecular O—H⋯O hydrogen bonds.