title: 2-Amino-4-methyl-pyridinium 3-hy-droxy-benzoate.
abstract: In the title salt, C6H9N2 (+)·C7H5O3 (-), the anion is essentially planar, with a dihedral angle of 2.72 (17)° between the benzene ring and the carboxyl-ate group. In the crystal, the anions are connected by O-H⋯O hydrogen bonds, forming a 41 helical chain along the c axis. 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 R 2 (2)(8) ring motif. The ion pairs are further connected via another N-H⋯O hydrogen bond, resulting in a three-dimensional network.
authors.affiliation: School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia.
authors.forename: Nuridayanti Che
authors.initials: NC
authors.lastname: Khalib
authors.forename: Kaliyaperumal
authors.initials: K
authors.lastname: Thanigaimani
authors.forename: Suhana
authors.initials: S
authors.lastname: Arshad
authors.forename: Ibrahim Abdul
authors.initials: IA
authors.lastname: Razak
references.citation: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references.pmid: 18156677
references.citation: Acta Crystallogr D Biol Crystallogr. 2009 Feb;65(Pt 2):148-55
references.pmid: 19171970