Acta Cryst. (2011). E67, o793 [ doi:10.1107/S1600536811007276 ]
Abstract: The aromatic rings of the N,N'-dioxide molecule in the title compound, C8H4NI3O4·C10H8N2O2·H2O, are twisted by 14.0 (2)°. The -CO2H substituents of the 5-amino-2,4,6-triiodoisophthalic acid are twisted by 83.0 (2) and 86.5 (2)° out of the plane of the aromatic ring. In the crystal, the three components are linked by O-HO hydrogen bonds into a three-dimensional network. An N-HO interaction also occurs. One of the amino H atom is not involved in hydrogen bonding.
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