title: 5-(4-Fluoro-phen-yl)-3-(4-methyl-phen-yl)-4,5-dihydro-1H-pyrazole-1-carbothio-amide.
abstract: The central pyrazole ring in the title compound, C17H16FN3S, adopts an envelope conformation with the methine C atom bearing the 4-fluoro-phenyl substituent as the flap atom. Whereas the tolyl ring is slightly twisted out of the least-squares plane through the pyrazole ring [dihedral angle = 13.51 (11)°], the fluoro-benzene ring is almost perpendicular [dihedral angle = 80.21 (11)°]. The thio-amide group is almost coplanar with the N-N bond of the ring [N-N-C-N torsion angle = 1.2 (3)°] and the amine group forms an intra-molecular hydrogen bond with a ring N atom. In the crystal, supra-molecular double layers in the bc plane are formed via N-H⋯S, N-H⋯F and C-H⋯F inter-actions.
authors.affiliation: Applied Organic Chemistry Department, National Research Centre, Dokki, 12622 Giza, Egypt.
authors.forename: Bakr F
authors.initials: BF
authors.lastname: Abdel-Wahab
authors.forename: Hanan A
authors.initials: HA
authors.lastname: Mohamed
authors.forename: Rizk E
authors.initials: RE
authors.lastname: Khidre
authors.forename: Seik Weng
authors.initials: SW
authors.lastname: Ng
authors.forename: Edward R T
authors.initials: ER
authors.lastname: Tiekink