Acta Cryst. (2008). E64, o1740  [ doi:10.1107/S1600536808025038 ]

1',5-Dinitro-2'-phenyl-2',3',5',6',7',7a'-hexahydrospiro[indoline-3,3'-1'H-pyrrolizin]-2-one

Y. Sarrafi and K. Alimohammadi

Abstract: In the title cycloadduct, C₂₀H₁₈N₄O₅, the rings of the pyrrolizine system adopt envelope conformations. A centrosymmetric dimer is formed via intermolecular N-HO hydrogen bonds between the indolinone rings.

Online 13 August 2008

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