title: 4-(1,3-Benzodioxol-5-yl)-2-oxo-1,2,5,6-tetra-hydro-benzo[h]quinoline-3-carbo-nitrile.
abstract: In the mol-ecule of the title compound, C(21)H(14)N(2)O(3), 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 24.3 (1)°. The ring of the benzodioxol system is bent away from the pyridine ring by 61.4 (1)° in order to avoid crowding the cyanide substituent. Two mol-ecules are linked by a pair of N-H⋯O hydrogen bonds to form a centrosymmetric dimer.
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