Acta Cryst. (2003). E59, o649-o651 [ doi:10.1107/S1600536803007906 ]
Abstract: In the title compound, C5H9N52+·2ClO4-·H2O, the structure can be described as alternating layers of C5H9N52+ and ClO4- ions along the a axis. Layers of adeninium cations and perchlorate anions are linked by strong anion-cation and anion-water hydrogen bonds via the sandwiched water molecules. This three-dimensional complex network of hydrogen bonds (N-HO) reinforces the cohesion of the ionic structure.
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