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. 2013 May 18;69(Pt 6):i35.
doi: 10.1107/S1600536813012853. Print 2013 Jun 1.

Poly[tri-μ-aqua-di-aqua-μ-phosphono-formato-cobalt(II)sodium]

Xu-Jian Luo  1 , Xiu-Qing Zhang
Affiliations

Poly[tri-μ-aqua-di-aqua-μ-phosphono-formato-cobalt(II)sodium]

Xu-Jian Luo et al. Acta Crystallogr Sect E Struct Rep Online. .

Abstract

The title complex, [CoNa(CO5P)(H2O)5]n, was obtained by reacting sodium phosphono-formate with cobalt nitrate. The complex contains cobalt(II) and sodium ions, which are bridged by the O atoms of two aqua ligands. The Co(II) 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 hexa-coordinated by six O atoms from four bridging and two terminal aqua ligands. The complex mol-ecules are linked to give a three-dimensional structure by phosphono-formate ligands bridging Co(II) atoms and water mol-ecules establishing cobalt-sodium bridges. O-H⋯O hydrogen bonding between the aqua ligands and all O atoms of the phosphono-formato ligand and neighbouring aqua ligands help to consolidate the packing.

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Figures

Fig. 1.
Fig. 1.
Molecular structure of one repeating unit of the coordination polymer with the atom-numbering scheme displacement ellipsoids drawn at the 30% probability level.
Fig. 2.
Fig. 2.
Packing diagram of the title compound viewed along c axis.
See this image and copyright information in PMC

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