Acta Cryst. (2012). E68, o3398 [ doi:10.1107/S1600536812046594 ]
Abstract: The title hydrated salt, C18H18N42+·2Cl-·2H2O, sits about an inversion centre, such that the asymmetric unit contains one half-molecule. In the crystal, hydrogen bonds occur between the water molecules and chloride anions, and there is - stacking of the benzene and imidazole rings of inversion-related pairs of molecules, with a centroid-centroid distance of 3.704 (17) Å.
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