title: (9E)-9-benzylidene-2-methylsulfanyl-5-phenyl-6,7,8,9-tetrahydropyrimido[4,5-b]quinolin-4(3H)-one: a hydrogen-bonded R2(2)(8) dimer.
abstract: In the molecule of the title compound, C25H21N3OS, which was prepared by mild oxidation of the corresponding 5,6,7,8,9,10-hexahydro analogue, the fused carbocyclic ring adopts an envelope conformation. Pairs of molecules are linked into cyclic centrosymmetric dimers by pairs of inversion-related N-H···O hydrogen bonds.
authors: Departamento de Química, Universidad de Valle, AA 25360 Cali, Colombia.
authors: Diana
authors: D
authors: Becerra
authors: Braulio
authors: B
authors: Insuasty
authors: Justo
authors: J
authors: Cobo
authors: Christopher
authors: C
authors: Glidewell
keywords: biological activity; crystal structure; hydrogen-bonded dimer; tetrahydropyrimidin-4(3H)-one