Received 19 February 2009
The asymmetric unit of the title compound, C14H14N4·2H2O consists of two half-molecules of the main molecule, each situated on an inversion center, and two molecules of water. One-dimensional chains of water molecules are built up by O-HO hydrogen bonds which are then linked with the main molecule via O-HN hydrogen bonds, forming a two-dimensional supramolecular network in the ac plane.
Data collection: RAPID-AUTO (Rigaku, 1998); cell refinement: RAPID-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2002); 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: FL2236 ).
The authors acknowledge financial support from the National Natural Science Foundation of China (grant No. 20872030), the Research Foundation of Heilongjiang Provincial Education Department (grant No. 11513073), the Project of the Special Fund of the Science and Technology Innovation People of Harbin (grant No. RC2006QN018001) and Heilongjiang University.
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