title: 4-(Methyl-amino)benzoic acid.
abstract: The asymmetric unit of the title compound, C(8)H(9)NO(2), contains three crystallographically independent mol-ecules, which are essentially planar, the carboxyl O atoms deviating by 0.091 (3), 0.101 (2) and 0.164 (3) Å from the mean plane through the non-H atoms. In the crystal, all three mol-ecules form O-H⋯O hydrogen-bonded about inversion centers, forming eight-membered rings with graph-set notation R(2) (2)(8). In addition, N-H⋯O hydrogen bonding and C-H⋯π inter-actions reinforce the packing.
authors.forename: Ismail
authors.initials: I
authors.lastname: Celik
authors.forename: Mehmet
authors.initials: M
authors.lastname: Akkurt
authors.forename: Hacali
authors.initials: H
authors.lastname: Necefoğlu
authors.forename: Ozgür
authors.initials: O
authors.lastname: Aybirdi
authors.forename: Santiago
authors.initials: S
authors.lastname: García-Granda