1-Benzyl-4',5'-diphenyl-piperidine-3-spiro-3'-pyrrolidine-2'-spiro-3''-indoline-4,2''-dione

Acta Crystallogr Sect E Struct Rep Online. 2008 Dec 17;65(Pt 1):o147-8. doi: 10.1107/S160053680804141X.

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.