title: 2-Amino-5-methyl-pyridinium 4-methyl-benzoate.
abstract: The 4-methyl-benzoate anion of the title salt, C6H9N2(+)·C8H7O2(-), is nearly planar, with a dihedral angle of 6.26 (10)° between the benzene ring and the carboxyl-ate group. In the crystal, the protonated N atom and the 2-amino group of the cation are hydrogen bonded to the carboxyl-ate O atoms of the anion via a pair of N-H⋯O hydrogen bonds with an R2(2)(8) ring motif, forming an approximately planar ion pair with a dihedral angle of 9.63 (4)° between the pyridinium and benzene rings. 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.
authors.affiliation: School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
authors.forename: Kaliyaperumal
authors.initials: K
authors.lastname: Thanigaimani
authors.forename: Abbas
authors.initials: A
authors.lastname: Farhadikoutenaei
authors.forename: Suhana
authors.initials: S
authors.lastname: Arshad
authors.forename: Ibrahim Abdul
authors.initials: IA
authors.lastname: Razak