Acta Cryst. (2012). E68, o3289
[ doi:10.1107/S1600536812045084 ]

(2RS,5'RS)-3',4'-Bis(4-chlorophenyl)-3,4-dihydrospiro[acridine-2,5'(4'H)-[1,2]oxazol]-1(2H)-one

P. Narayanan, S. U. Maheswari and K. Sethusankar

Abstract: The title compound, C₂₇H₁₈Cl₂N₂O₂, represents a racemic mixture of the corresponding R,R and S,S diastereomers. The isoxazoline ring adopts an envelope conformation with the spiro C atom deviating by 0.093 (2) Å from the rest of the ring. The six-membered keto-substituted carbocycle has a sofa conformation with the methylene C atom adjacent to the spiro center deviating by 0.289 (2) Å from the mean plane of the remaining atoms. In the crystal, molecules are linked via C-HCl interactions and C-ClO halogen bonds [2.958 (2) Å, 171.39 (7)°], which generate bifurcated R₂¹(6) ring motifs resulting in C₂¹[R₂¹(6)] chains running parallel to [010].

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