(3-Carb­oxy-5-sulfonatobenzoato-κ(2) O (1),O (1′))bis­[2-(2-pyrid­yl)-1H-benzimidazole-κ(2) N (2),N (3)]zinc(II) monohydrate

In the title compound, [Zn(C(8)H(4)O(7)S)(C(12)H(9)N(3))(2)]·H(2)O, the Zn(II) atom has a distorted octa­hedral coordination geometry, defined by four N atoms from two 2-(2-pyrid­yl)-1H-benzimidazole ligands and two O atoms from a deprotonated carboxyl­ate group of the 3-carb­oxy-5-sulfonatobenzoate ligand. In the crystal structure, the complex mol­ecules are linked into a three-dimensional network by inter­molecular O—H⋯O and N—H⋯O hydrogen bonds, and π–π stacking inter­actions with centroid–centroid separations of 3.758 (2) and 3.597 (1) Å.