4-Meth­oxy­benzamidinium 2,6-dimeth­oxy­benzoate

The title compound, C(8)H(11)N(2)O(+)·C(9)H(9)O(4) (−), was synthesized by the reaction of 4-meth­oxy­benzamidine (4-amidino­anisole) and 2,6-dimeth­oxy­benzoic acid. The structure consists of non-planar pairs of hydrogen-bonded 4-meth­oxy­benzamidinium cations and 2,6-dimeth­oxy­benzoate anions. In the cation, the amidinium group is tilted by 27.94 (10)° with respect to the benzene ring. In the anion, the sterically bulky ortho-meth­oxy substituents force the carb­oxy­ate group to be twisted away from the plane of the benzene ring by 73.24 (6)°. The ions are further associated in the crystal into chains along the b-axis direction by inter­molecular N—H⋯O hydrogen bonds.