title: 1-Benzoyl-3-(4-chloro-phen-yl)thio-urea dichloro-methane hemisolvate.
abstract: In the title hemisolvate, C14H11ClN2OS·0.5CH2Cl2, an anti disposition is found for the thione and ketone atoms, as well as the N-H H atoms; the dichloro-methane C atom lies on a twofold axis. The central chromophore (including the two adjacent ipso C atoms) is planar (r.m.s. deviation = 0.021 Å) owing to the presence of an intra-molecular N-H⋯O hydrogen bond, which closes an S(6) loop. Significant twists are evident in the mol-ecule, the dihedral angles between the central moiety and the phenyl and benzene rings being 29.52 (7) and 40.02 (7)°, respectively. In the crystal, eight-membered {⋯HNC= S}2 synthons with twofold symmetry form via N-H⋯S hydrogen bonds. The dimers are connected into a supra-molecular chain along [111] by C-H⋯O inter-actions. The chains stack along the c axis, forming columns which define channels in which the occluded dichloro-methane mol-ecules reside.
authors.affiliation: Department of Chemistry, National Institute of Technology, Tiruchirappalli 620 015, India.
authors.forename: N
authors.initials: N
authors.lastname: Selvakumaran
authors.forename: M Mary
authors.initials: MM
authors.lastname: Sheeba
authors.forename: R
authors.initials: R
authors.lastname: Karvembu
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink