Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 1 (January 2013)

organic compounds

Acta Cryst. (2013). E69, o134-o135    [ doi:10.1107/S1600536812051021 ]

2-Amino-5-methyl­pyridinium 4-chloro­benzoate

K. Thanigaimani, A. Farhadikoutenaei, S. Arshad and I. A. Razak

Abstract: The 4-chloro­benzoate anion of the title salt, C6H9N2+·C7H4ClO2-, is nearly planar with a dihedral angle of 5.14 (16)° between the benzene ring and the carboxyl­ate group. In the crystal, the protonated N atom and the 2-amino group of the cation are hydrogen bonded to the carboxyl­ate O atoms of the anion via a pair of N-H...O hydrogen bonds with an R22(8) ring motif. The ion pairs are further connected via N-H...O and weak C-H...O hydrogen bonds, forming a two-dimensional network parallel to the bc plane. The crystal structure also features a [pi]-[pi] stacking inter­action between the pyridinium and benzene rings with a centroid-centroid distance of 3.7948 (9) Å.

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