Acta Cryst. (2012). E68, o3244
[ doi:10.1107/S1600536812044327 ]
Abstract: The title salt, C8H11N2O+·HSO4-, has been synthesized by the reaction between 4-methoxybenzamidine and sulfuric acid. The asymmetric unit comprises a nonplanar 4-methoxybenzamidinium cation and one hydrogen sulfate anion. In the cation, the amidinium group has two identical C-N bonds [1.306 (2) and 1.308 (2) Å], and its plane forms a dihedral angle of 6.49 (8)° with the mean plane of the benzene ring. The ionic components are associated in the crystal via N-H+O-, resulting in chains running approximately along the b-axis direction whicg are interconnected by O-HO- hydrogen bonds.
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