Acta Cryst. (2009). E65, o2388  [ doi:10.1107/S160053680903551X ]

Diethyl 1-acetyl-4'-(4-chlorophenyl)-5'-(4-nitrophenyl)-2-oxospiro[indoline-3,3'-pyrrolidine]-2',2'-dicarboxylate

L. He

Abstract: In the title compound, C₃₁H₂₈ClN₃O₈, the pyrrolidine ring exhibits an envelope conformation, with the spiro C atom located at the flap position. A spiro junction links the oxindole ring system and the pyrrolidine ring. The planar oxindole ring system is twisted with respect to the nitrobenzene and chlorobenzene rings, with dihedral angles of 62.34 (11) and 75.93 (9)°, respectively. In the crystal, a weak C-HO interaction links the molecules into chains and two intramolecular C-HO close contacts are seen.

Online 9 September 2009

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