title: 2-Oxo-4-(thio-phen-2-yl)-1,2,5,6-tetra-hydro-benzo[h]quinoline-3-carbonitrile.
abstract: In the mol-ecule of the title compound, C(18)H(12)N(2)OS, the tetra-hydro-benzo[h]quinoline fused-ring system is buckled owing to the ethyl-ene -CH(2)CH(2)- fragment, the benzene ring and the pyridine ring being twisted by 16.0 (1)°. The 4-substituted aromatic ring is bent away from the pyridine ring by 59.5 (2)° (for the major disordered thienyl component) in order to avoid crowding the cyanide substituent. In the crystal, two mol-ecules are linked by a pair of N-H⋯O hydrogen bonds to form a centrosymmetric dimer. The thienyl ring is disordered over two sites in a 72.7 (2):27.3 ratio.
authors: Abdullah M
authors: AM
authors: Asiri
authors: Hassan M
authors: HM
authors: Faidallah
authors: Abdulrahman O
authors: AO
authors: Al-Youbi
authors: Khalid A
authors: KA
authors: Alamry
authors: Seik Weng
authors: SW
authors: Ng