title: Crystal structure of 1-benzoyl-3-(4-fluoro-phen-yl)thio-urea.
abstract: The title compound, C14H11FN2OS, contains two mol-ecules (A and B) in the asymmetric unit, with different conformations. In mol-ecule A, the dihedral angles between the central thio-urea grouping and the phenyl and fluoro-benzene rings are 28.77 (8) and 41.82 (8)°, respectively, and the dihedral angle between the ring planes is 70.02 (9)°. Equivalent data for mol-ecule B are 8.46 (8), 47.78 (8) and 52.99 (9)°, respectively. Both mol-ecules feature an intra-molecular N-H⋯O hydrogen bond, which closes an S(6) ring. In the crystal, A+B dimers linked by pairs of N-H⋯S hydrogen bonds generate R 2 (2)(8) loops.
authors.affiliation: Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia.
authors.forename: Rabab Sharaf
authors.initials: RS
authors.lastname: Jassas
authors.affiliation: Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia ; Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia.
authors.forename: Abdullah M
authors.initials: AM
authors.lastname: Asiri
authors.affiliation: Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia ; Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia.
authors.forename: Muhammad Nadeem
authors.initials: MN
authors.lastname: Arshad
authors.affiliation: Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203, Jeddah 21589, Saudi Arabia.
authors.forename: Mohie E M
authors.initials: ME
authors.lastname: Zayed
authors.affiliation: Department of Chemistry, University of Gujrat, Gujrat 50700, Pakistan.
authors.forename: Ghulam
authors.initials: G
authors.lastname: Mustafa
keywords: amide; crystal structure; hydrogen-bonded dimers; thio­urea