Acta Cryst. (2005). E61, o3124-o3126  [ doi:10.1107/S1600536805027261 ]

1'-Phenyl-2',3',5',6',7',7a'-hexahydroindan-2-spiro-2'-1H-pyrrolizine-3'-spiro-11'-indeno[1,2-b]quinoxaline-1,3-dione

D. Gayathri, P. G. Aravindan, D. Velmurugan, K. Ravikumar and A. R. Sureshbabu

Abstract: The title compound, C₂₇H₂₂N₂O₃, comprises an indeno-quinoxaline system linked via a spiro ring junction to a hexahydro-1H-pyrrolizine unit. This in turn carries an indene-1,3-dione linked again by a spiro junction through the five-membered indenone ring. The pyrrolizidine moiety is folded and twisted about the N-C bond common to the two five-membered rings. In the crystal packing, an R₂²(20) graph set involves a dimeric C-HO hydrogen bond and ring motif. The packing is further stabilized by C-HO and weak - interactions.

Online 7 September 2005

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