catena-Poly[[cobalt(II)-μ-aqua-μ-propano­ato-κ(2) O:O′-μ-propano­ato-κ(2) O:O] monohydrate]

The title compound, {[Co(C(2)H(5)COO)(2)(H(2)O)]·H(2)O}(n), was synthesized by the reaction of cobalt(II) carbonate hydrate with aqueous propionic acid. The structure consists of polymeric infinite linear chains with composition [Co(C(2)H(5)COO)(4/2)(H(2)O)(2/2)](∞) running along [010]. The chains are formed by Co(2+) ions linked with bridging propionate groups and water mol­ecules, with a Co⋯Co distance along the chains of 3.2587 (9) Å. The Co(2+) ion is six-coordinated in a strongly distorted octa­hedral geometry. The chains are connected to each other by a network of O—H⋯O hydrogen bonds involving solvent water mol­ecules.