Acta Cryst. (2011). E67, o1537 [ doi:10.1107/S1600536811019647 ]
Abstract: In the title compound, C10H8N6·2H2O, the central aromatic ring makes dihedral angles of 23.59 (15) and 16.99 (16)° with the terminal imidazole and tetrazole rings, respectively, which are themselves almost coplanar [dihedral angle = 6.61 (18)°]. Two H atoms of the two water molecules are half occupied. In the crystal packing, weak intermolecular O-HN, O-HO and N-HN hydrogen bonds and - stacking interactions [centroid-centroid distances of 3.73 (4) Å between benzene rings and 3.66 (3) Å between imidazole and tetrazole rings] are observed.
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