catena-Poly[[di­aqua­bis­(μ(3)-5-carboxyl­ato-1H-pyrazole-3-carb­oxy­lic acid-κ(3) O (3):O (3);O (5))dilithium(I)] monohydrate]

The basic structural unit of the title polymeric ribbon, {[Li(2)(C(5)H(3)N(2)O(2))(2)(H(2)O)(2)]·H(2)O}(n), is a centrosymmetric dinuclear complex in which the two Li(I) ions are bridged by two carboxyl­ato O atoms, to generate a centrosymmetric Li(2)O(2) core. These are connected into a chain along [01-1] by carboxylic acid–carbonyl-O bonds. The tetra­hedral coordination of the Li(I) cation is completed by an aqua ligand. The carboxylic acid is involved in an intra-ribbon hydrogen bond. A solvate water molecule showing positional (50:50) disorder is observed. Polymeric ribbons along [01-1] are connected by O—H⋯O, N—H⋯O and O—H⋯N hydrogen bonds into a three-dimensional architecture.