Acta Cryst. (2012). E68, o2197-o2198
[ doi:10.1107/S1600536812028012 ]

1'-Methyl-4'-(4-methylphenyl)dispiro[indane-2,3'-pyrrolidine-2',3''-indoline]-1,2''-dione

A. M. Moustafa, A. S. Girgis, S. M. Shalaby and E. R. T. Tiekink

Abstract: In the title molecule, C₂₇H₂₄N₂O₂, the pyrrolidin-2-one ring is almost planar (r.m.s. deviation = 0.003 Å), the pyrrolidine ring has an envelope conformation (the N atom is the flap atom) and the cyclopentanone ring is twisted about the C_q-C_m bond (q = quaternary and m = methylene). The ketone O atoms are directed to opposite sides of the molecule. Supramolecular chains along the a axis are formed in the crystal packing mediated by N-HN and C-HO interactions. These are connected into layers in the ab plane via C-H interactions.

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