title: 4-(3-Carb-oxy-phen-yl)pyridinium nitrate.
abstract: In the title salt, C(12)H(10)NO(2) (+)·NO(3) (-), the dihedral angle between the pyridine ring and the benzene ring of the 4-(3-carb-oxy-phen-yl)pyridinium cation is 30.14 (2)°. Inversion-related pairs of cations are linked into dimers by pairs of O-H⋯O hydrogen bonds. Pairs of dimers are linked by N-H⋯O and C-H⋯O hydrogen bonds involving nitrate anions as acceptors, generating supra-molecular chains along the diagonal of the bc plane.
authors.affiliation: Department of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an, Shaanxi 716000,  People's Republic of China.
authors.forename: Long
authors.initials: L
authors.lastname: Tang
authors.forename: Ya-Pan
authors.initials: YP
authors.lastname: Wu
authors.forename: Feng
authors.initials: F
authors.lastname: Fu
authors.forename: Zhu-Lian
authors.initials: ZL
authors.lastname: Zhang
authors.forename: Hai-Kang
authors.initials: HK
authors.lastname: Guo