title: 4-Benzyl-8-phenyl-1-thia-4-aza-spiro-[4.5]decan-3-one.
abstract: In the title compound, C(21)H(23)NOS, the thia-zolidine ring adopts a twist conformation about one of its C-S bonds, while the cyclo-hexane ring has a chair conformation. The S and N atoms attached to the spiro C atom are in axial and equatorial orientations, respectively. The thia-zolidine ring forms dihedral angles of 86.24 (14) and 31.82 (15)° with the directly attached and remote terminal benzene rings, respectively. The dihedral angle between the two terminal benzene rings is 86.74 (14)°. In the crystal, the only significant directional inter-action is a weak C-H⋯π bond, which generates [010] chains.
authors.forename: Hoong-Kun
authors.initials: HK
authors.lastname: Fun
authors.forename: Tze Shyang
authors.initials: TS
authors.lastname: Chia
authors.forename: Poovan
authors.initials: P
authors.lastname: Shanmugavelan
authors.forename: Alagusundaram
authors.initials: A
authors.lastname: Ponnuswamy