4-Methylanilinium tetrafluoroborate 18-crown-6 clathrate

In the title compound, C(7)H(10)N(+)center dot BF(4)(-)center dot C(12)H(24)O(6), the protonated 4-methylanilinium cation interacts with 18-crown-6 forming a rotator-stator structure, (C(6)H(4)CH(3)NH(3)(+))(18-crown-6), through three bifurcated N-H center dot center dot center dot(O,O) hydrogen bonds between the ammonium groups of the cations (-NH(3)) and the O atoms of the crown ether molecule. The BF(4)(-) anions, the methyl group and the protonated -NH(3) groups of the 4-methylanilinium lie on a dual axis of rotation. The 18-crown-6 unit is perpendicular to the dual axis of rotation and the mirror plane which contains the dual axis of rotation. The benzene ring of 4-methylanilinium is perpendicular to the mirror plane and parallel to the dual axis.