organic compounds
Open access
The asymmetric unit of the title salt, C6H16NO+·C10H4ClN4O7−·0.5H2O, contains two cations, two anions and one water molecule. In one independent anion, one nitro group is rotationally disordered over two orientations in a 0.657 (8):0.343 (8) ratio. In the crystal, intermolecular N—HO and O—HO hydrogen bonds link all the components into ribbons extending along [100].
organic compounds
Open access
In the cation of the title hydrated salt, C11H9N4O4+·Cl−·H2O, the six-membered rings are inclined to each other at 79.0 (1)° and an intramolecular N—HO hydrogen bond occurs. In the crystal, N—HCl hydrogen bonds link two cations and two anions into centrosymmetric group, and O—HCl hydrogen bonds involving the water molecules further link these groups into chains in [101]. An O—HO interaction is also present. The water molecule is disordered over two sets of sites in a 0.555 (13):0.445 (13) ratio