title: 1-Benzyl-4',5'-diphenyl-piperidine-3-spiro-3'-pyrrolidine-2'-spiro-3''-indoline-4,2''-dione.
abstract: The asymmetric unit of the title compound, C(34)H(31)N(3)O(2), consists of two independent mol-ecules which differ slightly in the orientations of the phenyl rings with respect to the pyrrolidine ring. In both mol-ecules, the piperidin-4-one ring adopts a chair conformation, whereas the pyrrolidine ring adopts an envelope conformation in one of the mol-ecules and a twisted conformation in the other. An intra-molecular C-H⋯O hydrogen bond is observed. The crystal packing is stabilized by inter-molecular N-H⋯O hydrogen bonds and C-H⋯π inter-actions.
authors.forename: J
authors.initials: J
authors.lastname: Suresh
authors.forename: R Suresh
authors.initials: RS
authors.lastname: Kumar
authors.forename: A
authors.initials: A
authors.lastname: Rajapriya
authors.forename: S
authors.initials: S
authors.lastname: Perumal
authors.forename: P L Nilantha
authors.initials: PL
authors.lastname: Lakshman