3-Methylanilinium picrate

Abstract

In 3-methyl­anilinium picrate (3-MAP), C7H10N+·C6H2N3O7−, one of the nitro groups in the picrate ion is rotationally disordered with site occupancy factors of 0.80 and 0.20. The expected proton transfer took place between picric acid and 3-methyl­aniline, and the amine group is hydrogen bonded to two of the phenolate O atoms. The ortho-nitro groups deviate greatly from the benzene plane of the picrate ion, facilitating hydrogen-bond formation. While the cations are stacked as columns along the [001] direction, the anions are stacked in an offset fashion.