Received 23 August 2009
In the title crystal structure, C13H9N4+·ClO4-·H2O, cations, anions and water molecules are linked through intermolecular N-HO, O-HN and O-HO hydrogen bonds, forming layers parallel to (001). In addition, there are weak - stacking interactions between the layers, involving the cations and with centroid-centroid distances in the range 3.584 (2)-3.662 (2) Å, forming a three-dimensional network.
Data collection: APEX2 (Bruker, 2005); cell refinement: SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: LH2890 ).
The author is grateful to the Zhejiang Economic and Trade Polytechnic for financial support.
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