Acta Cryst. (2003). E59, m1164-m1167  [ doi:10.1107/S1600536803024322 ]

Supramolecular organization via varied coordination modes in triaqua(-8-hydroxy-7-iodoquinoline-5-sulfonato)barium(II) monohydrate

P. T. Muthiah, S. Francis, G. Bocelli and A. Cantoni

Abstract: In the crystal structure of [Ba(C₉H₄INO₄S)(H₂O)₃]·H₂O, the asymmetric unit contains a Ba²⁺ ion, an 8-hydroxy-7-iodoquinoline-5-sulfonate anion, three coordinated water molecules and an uncoordinated water molecule. The Ba²⁺ ion has a nine-coordinate monocapped antiprismatic geometry, formed by four O atoms of three different sulfonate groups, the chelating N and O atoms of the oxine ring, and three water molecules. Each sulfonate group bridges three neighbouring Ba²⁺ ions. The organic ligands are stacked over one another, each pair of adjacent members of the stack being related by inversion symmetry. These stacks are crosslinked by Ba²⁺ ions, leading to a three-dimensional network, which is further stabilized by O-HO hydrogen bonds.

Online 22 November 2003

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