Redetermination of catena-poly[diaqua(oxydiacetato-O,O′,O′′)cobalt(II) monohydrate]
Abstract
The structure of the title compound, catena-poly[[[diaquacobalt(II)]-μ-oxydiacetato-κ4O,O′,O′′:O′′′)cobalt(II)] monohydrate], {[Co(C4H4O5)(H2O)2]·H2O}n, (I), was first determined and reported by Hatfield et al. [Proc. Indian Acad. Sci. Chem. Sci. (1987), 98, 23–31]. We present here a redetermination, with appreciably improved accuracy and successful location of H atoms. In the crystal structure, oxydiacetate plays the role of both chelating and bridging ligand, resulting in he formation of polymeric chains of complex molecules along the crystallographic b axis. Water molecules occupy the apical positions, thus completing the coordination octahedron of the CoII atom. The polymeric chains are interlinked via intermolecular hydrogen bonding between carboxylate and water molecules, forming the three-dimensional supramolecular structure.
