Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 11 (November 2012)


organic compounds



is5202 scheme

Acta Cryst. (2012). E68, o3196-o3197    [ doi:10.1107/S1600536812043243 ]

2-Amino-5-methylpyridinium 2-aminobenzoate

K. Thanigaimani, A. Farhadikoutenaei, N. C. Khalib, S. Arshad and I. A. Razak

Abstract: In the 2-aminobenzoate anion of the title salt, C6H9N2+·C7H6NO2-, an intramolecular N-H...O hydrogen bond is observed. The dihedral angle between the ring and the CO2 group is 8.41 (13)°. In the crystal, the protonated N atom and the 2-amino group of the cation are hydrogen bonded to the carboxylate O atoms via a pair of N-H...O hydrogen bonds, forming an R22(8) ring motif. The ion pairs are further connected via N-H...O hydrogen bonds, resulting in a donor-donor-acceptor-acceptor (DDAA) array of quadruple hydrogen bonds. The crystal structure also features a weak N-H...O hydrogen bond and a C-H...[pi] interaction, resulting in a three-dimensional network.


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