Acta Cryst. (2007). E63, m146-m147  [ doi:10.1107/S1600536806049762 ]

Disodium diaquabis(malonato-²O,O')cobalt(II) monohydrate

L. Ye, B. Li, G.-D. Yang and L.-X. Wu

Abstract: In the title compound, Na₂[Co(C₃H₂O₄)₂(H₂O)₂]·H₂O, the Co atom and two crystallographically independent Na⁺ ions lie on twofold rotation axes. The Co atom is coordinated by four O atoms from two malonate ligands and two water molecules in a distorted octahedral geometry [Co-O = 1.595 (3)-2.219 (4) Å]. The two independent Na⁺ ions are coordinated by six and eight O atoms, respectively [Na-O = 2.268 (4)-2.844 (3) Å]. A two-dimensional hydrogen-bonding network formed by O-HO hydrogen bonds stabilizes the crystal structure.

Online 13 December 2006

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