Potassium 2-benzoylbenzoate dihydrate

The title compound, K+·C14H9O3−·2H2O, was prepared by slow evaporation of an aqueous solution of potassium 2-benzoyl­benzoate. Potassium cations are coordinated by six O atoms of two 2-benzoyl­benzoate anions and three water mol­ecules in a polymeric structure with bridging ligands. There are inter­molecular O—H⋯O hydrogen bonds in the crystal structure.