title: N-(4-Bromo-phen-yl)urea.
abstract: In the title compound, C(7)H(7)BrN(2)O, both the urea moiety [maximum deviation 0.003 (2) Å] and the benzene ring are essentially planar [maximum deviation 0.003 (2) Å] but are rotated with respect to each other by a dihedral angle of 47.8 (1)°. The crystal assembly is stabilized by N-H⋯O hydrogen bonds between all NH protons as conventional hydrogen bond donors and the C=O oxygen as a trifurcated hydrogen-bond acceptor. Both the overall mol-ecular geometry and the crystal packing of the title compound are very similar to those of N-phenyl-urea, which is underscored by a practically isostructural relationship between these two urea derivatives.
authors: Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague; Hlavova 2030, 12840 Prague 2, Czech Republic.
authors: Petr
authors: P
authors: Stěpnička
authors: Ivana
authors: I
authors: Císařová
references: Acta Crystallogr A. 2008 Jan;64(Pt 1):112-22
references: 18156677
references: Acta Crystallogr D Biol Crystallogr. 2009 Feb;65(Pt 2):148-55
references: 19171970
references: Org Lett. 2009 Oct 1;11(19):4458-61
references: 19725524