Received 31 July 2009
The title compound, C8H8N4, possesses crystallographic mirror symmetry, with four C atoms lying on the reflecting plane, which bisects the phenyl and tetrazole rings. It is composed of a planar r.m.s. deviation (0.0012 Å) tetrazole ring which is nearly coplanar with the benzene ring, the dihedral angle being 2.67 (9)°. In the crystal, symmetry-related molecules are linked by intermolecular N-HN hydrogen bonds. The molecules stack along  with a interaction involving the phenyl and tetrazole rings of adjacent molecules [centroid-centroid distance = 3.5639 (15) Å]. The H atom of the N-H group is disordered over two sites of equal occupancy. The methyl H atoms were modelled as disordered over two sets of sites of equal occupancy rotated by 60° with respect to each other.
For related manganese(II) complexes, see: Hu et al. (2007); Lü (2008). For applications of tetrazoles in coordination chemistry, medicinal chemistry and materials science, see: Xiong et al. (2002); Xue et al. (2002); Wang et al. (2005); Dunica et al. (1991); Wittenberger et al. (1993).
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: PRPKAPPA (Ferguson, 1999).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: SU2134 ).
This work was supported by a start-up grant from Southeast University to ZRQ.
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