title: 2-Amino-5-methyl-pyridinium 3-hy-droxy-pyridine-2-carboxyl-ate.
abstract: In the 3-hy-droxy-picolinate anion of the title salt, C6H9N2 (+)·C6H4NO3 (-), an intra-molecular O-H⋯O hydrogen bond with an S(6) graph-set motif is formed, so that the anion is essentially planar, with a dihedral angle of 9.55 (9)° between the pyridine ring and the carboxyl-ate group. In the crystal, the cations and anions are linked via N-H⋯O hydrogen bonds, forming a centrosymmetric 2 + 2 aggregate with R 2 (2)(8) and R 4 (2)(8) ring motifs. The crystal structure also features N-H⋯N and weak C-H⋯π inter-actions.
authors.affiliation: School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia ; Department of Physics, Faculty of Science, University of Mazandaran, Babolsar, Iran.
authors.forename: Abbas
authors.initials: A
authors.lastname: Farhadikoutenaei
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
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