title: N,N'-Bis(4-fluoro-phen-yl)urea.
abstract: The asymmetric unit of the title compound, C(13)H(10)F(2)N(2)O, contains one and a half N,N'-bis-(4-fluoro-phen-yl)urea mol-ecules. One of the mol-ecules has crystallographic twofold rotation symmetry. The benzene rings are twisted from each other by dihedral angles of 29.69 (6)° for the mol-ecule in a general position and 89.83 (6)° for the symmetry-generated mol-ecule. In the crystal structure, a pair of inter-molecular N-H⋯O hydrogen bonds link symmetry-related mol-ecules into chains along the b axis, forming R(2) (1)(6) ring motifs.
authors.forename: Wan-Sin
authors.initials: WS
authors.lastname: Loh
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: S
authors.initials: S
authors.lastname: Sarveswari
authors.forename: V
authors.initials: V
authors.lastname: Vijayakumar
authors.forename: R Venkat
authors.initials: RV
authors.lastname: Ragavan