Received 5 July 2011
In the title molecule, C9H7N7, the two triazole rings are twisted by an angle of 3.8 (5)°; the central triazole ring is twisted by 32.3 (6)° with respect to the pyridyl ring. The crystal packing consists of layers generated by intermolecular N-HN hydrogen bonds.
Data collection: APEX2 (Bruker, 2003); cell refinement: SAINT (Bruker, 2003); 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: SHELXTL.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: NG5195 ).
This work was supported by the Natural Science Research Program of the Education Department of Henan Province (2011 A150015), the Henan Polytechnic University Foundation for Youths (P051102) and the Henan Polytechnic University Foundation for Doctor Teachers (B2010-65). The authors thank Dr D. Zhao for help with the diffraction analysis.
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