title: Crystal structure of 4-benzamido-2-hy-droxy-benzoic acid.
abstract: In the title compound, C14H11NO4, the dihedral angle between the mean planes of the aromatic rings is 3.96 (12)° and an intra-molecular O-H⋯O hydrogen bond closes an S(6) ring. A short intra-molecular C-H⋯O contact is also seen. In the crystal, carb-oxy-lic acid inversion dimers linked by pairs of O-H⋯O hydrogen bonds generate R 2 (2)(8) loops. Conversely, the N-H group does not form a hydrogen bond. Aromatic π-π inter-actions exist at a centroid-centroid distance of 3.8423 (15) Å between the benzene rings. An extremely weak C-H⋯π inter-action also is present.
authors.affiliation: Department of Chemistry, University of the Punjab, Lahore, Punjab, Pakistan.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Shahid
authors.affiliation: Department of Chemistry, Mirpur University of Science and Technology (MUST), Mirpur, Azad Jammu and Kashmir, Pakistan.
authors.forename: Muhammad Aziz
authors.initials: MA
authors.lastname: Choudhary
authors.affiliation: Department of Chemistry, Mirpur University of Science and Technology (MUST), Mirpur, Azad Jammu and Kashmir, Pakistan.
authors.forename: Arshad Farooq
authors.initials: AF
authors.lastname: Butt
authors.affiliation: Department of Physics, University of Sargodha, Sargodha, Punjab, Pakistan.
authors.forename: Muhammad Nawaz
authors.initials: MN
authors.lastname: Tahir
authors.affiliation: Department of Chemistry, University of the Punjab, Lahore, Punjab, Pakistan.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Salim
keywords: crystal structure; hydrogen bonding; π–π inter­actions