Received 10 September 2008
In the title compound, C6H6N5+·Cl-, the pyridinium and tetrazole rings are essentially coplanar. The pyridine N atoms are protonated. In the crystal structure, molecules are connected via N-HCl, C-HCl, C-HN and N-HN hydrogen bonds into layers that are parallel to the (001) plane. There are two crystallographically independent molecules in the asymmetric unit which are located on mirror planes.
Data collection: CrystalClear (Rigaku, 2005); cell refinement: CrystalClear; data reduction: CrystalClear; 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: NC2115 ).
This work was supported by a start-up grant from Southeast University to Professor Ren-Gen Xiong.
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