Acta Cryst. (2002). E58, m513-m516  [ doi:10.1107/S1600536802015118 ]

Metal-binding modes in sulfoxines: supramolecular network in (8-hydroxyquinoline-5-sulfonato-N¹,O⁸)sodium(I)

S. Baskar Raj, P. T. Muthiah, G. Bocelli and R. Olla

Abstract: In the title compound, [Na(C₉H₆NO₄S)], the sodium ion is coordinated by the N and O atoms of the quinolinol moiety (usual bidentate chelation) and three O atoms from three different sulfonate groups. The quinolinol O atom and one of the sulfonate O atoms are in the axial positions and the ring N atom and two O atoms from two different sulfonate groups lie in the equatorial positions of the trigonal bipyramid around sodium. Unlike other metal sulfoxinates, the quinolinol O atom is not deprotonated, but is involved in hydrogen bonding. Moreover, all three sulfonate O atoms are involved in coordination, leading to a supramolecular three-dimensional network structure.

Online 13 September 2002

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