Poly[[[μ(2)-1,1′-(butane-1,4-di­yl)bis­(1H-imidazole)-κ(2) N (3):N (3′)](μ(2)-2,6-di­methyl­pyridine-3,5-dicarboxyl­ato-κ(2) O (3):O (5))zinc] dihydrate]

In the title coordination polymer, {[Zn(C(9)H(7)NO(4))(C(10)H(14)N(4))]·2H(2)O}(n), the Zn(II) ion displays a distorted tetra­hedral geometry with two imidazole N atoms from two 1,1′-(butane-1,4-di­yl)bis­(imidazole) (bbi) ligands and two carboxyl­ate O atoms from two 2,6-dimethyl­pyridine-3,5-dicarboxyl­ate (dpdc) ligands. The bbi and dpdc ligands bridge the Zn(II) ions, forming layers parallel to (011). O—H⋯O and O—H⋯N hydrogen bonds and π–π inter­actions between the imidazole rings [centroid–centroid distance = 3.807 (5) Å] connect the layers. Two of the three uncoordinated water mol­ecules are disordered, each over two 0.25-occupancy positions.