Acta Cryst. (2009). E65, m735-m736  [ doi:10.1107/S160053680902087X ]

Diaquabis(1,3-propanediamine)nickel(II) squarate tetrahydrate

E. Temel, H. Erer, O. Z. Yesilel and O. Büyükgüngör

Abstract: The asymmetric unit of the title compound, [Ni(C₃H₁₀N₂)₂(H₂O)₂](C₄O₄)·4H₂O, contains one-half of the diaquabis(1,3-propanediamine)nickel(II) cation, one-half of the centrosymmetric squarate anion and two uncoordinated water molecules. In the cation, the Ni^II atom is located on a crystallographic inversion centre and has a slightly distorted octahedral coordination geometry. The six-membered chelate ring adopts a chair conformation. O-HO hydrogen bonds link the cation and anion through the water molecule, while N-HO hydrogen bonds link the cation and anion and cation and water molecules. In the crystal structure, intermolecular O-HO and N-HO hydrogen bonds link the molecules into a three-dimensional network structure.

Online 6 June 2009

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