catena-poly[[[diaquacobalt(II)]-m-tartrato-k4O,O:O,O] monohydrate]

In the title Co-4(4)6(2)2(2)n(II polymeric complex bridged by tartrate dianions, Co(C)H(O))(H(O))] H(O), the CoII atom is coordinated by two tartrate dianions and two water molecules to give a distorted octahedral geometry. The hydroxyl O atom and one O atom of each carboxyl group chelate to the CoII atom, but the other O atom of this carboxyl group is uncoordinated. The polymeric chains are linked to each other via hydrogen bonds to form cavities which are filled with solvent water molecules.