Acta Cryst. (2007). E63, m1941  [ doi:10.1107/S1600536807028796 ]

Poly[aquadi--hippurato-potassium(I)]

S. Natarajan, S. A. M. B. Dhas, J. Suresh and S. Athimoolam

Abstract: The title compound, [K(C₉H₈N₂O₃)₂(H₂O)], has one potassium cation, two hippurate anions and one coordinated water molecule in the asymmetric unit. The coordination number of the K⁺ cation is seven, leading to a pentagonal-bipyramidal structure in which the polyhedron is constituted by a central K atom coordinated by six carboxylate O atoms and one water O atom. The benzene rings exhibit orientational disorder (0.55:0.45), leading to two different orientations in both hippurates. Even though the metal coordination dominates the crystal packing, it is further stabilized by hydrogen-bonding interactions. The hydrogen-bonding interactions form an intramolecular S(7) motif and an intermolecularly connected C₂²(7) chain motif.

Online 20 June 2007

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