title: Crystal structure of 1-(2-amino-phen-yl)-3-phenyl-urea.
abstract: In the title compound, C13H13N3O, the phenyl ring makes a dihedral angle of 47.0 (1)° with the mean plane of the -NC(=O)N- unit, while the dihedral angle between the latter mean plane and the amino-phenyl ring is 84.43 (7)°. In the crystal, mol-ecules are linked via N-H⋯O hydrogen bonds involving the central -NHC(=O)NH- units, forming chains running parallel to the b axis. These chains associate with one another via N-H⋯O and N-H⋯N hydrogen bonds, from the pendant amino groups to the -NHC(=O)NH- units of adjacent mol-ecules, forming columns propagating along [010]. The structure was refined as a two-component twin with a 0.933 (3):0.067 (3) domain ratio.
authors: Department of Chemistry, Tulane University, New Orleans, LA 70118, USA.
authors: Joel T
authors: JT
authors: Mague
authors: Chemistry and Environmental Division, Manchester Metropolitan University, Manchester M1 5GD, England ; Chemistry Department, Faculty of Science, Minia University, 61519 El-Minia, Egypt.
authors: Shaaban K
authors: SK
authors: Mohamed
authors: Department of Physics, Faculty of Sciences, Erciyes University, 38039 Kayseri, Turkey.
authors: Mehmet
authors: M
authors: Akkurt
authors: Chemistry Department, Faculty of Science, Sohag University, 82524 Sohag, Egypt.
authors: Omran A
authors: OA
authors: Omran
authors: Kirkuk University, College of Science, Department of Chemistry, Kirkuk, Iraq.
authors: Mustafa R
authors: MR
authors: Albayati
keywords: N—H⋯N hydrogen bonds; N—H⋯O hydrogen bonds; crystal structure; twinned structure; urea derivatives