Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 6 (June 2013)

inorganic compounds

Acta Cryst. (2013). E69, i35    [ doi:10.1107/S1600536813012853 ]


X.-J. Luo and X.-Q. Zhang

Abstract: The title complex, [CoNa(CO5P)(H2O)5]n, was obtained by reacting sodium phosphono­formate with cobalt nitrate. The complex contains cobalt(II) and sodium ions, which are bridged by the O atoms of two aqua ligands. The CoII ion is octahedrally coordinated by three phosphonoformato ligands (one bi- and the other monodentate) and by two O atoms from the bridging aqua ligands. The sodium cation is hexa­coordinated by six O atoms from four bridging and two terminal aqua ligands. The complex mol­ecules are linked to give a three-dimensional structure by phosphono­formate ligands bridging CoII atoms and water mol­ecules establishing cobalt-sodium bridges. O-H...O hydrogen bonding between the aqua ligands and all O atoms of the phosphono­formato ligand and neighbouring aqua ligands help to consolidate the packing.

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