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

• Main Authors: Ponmudisettu Narayanan, Shanmugavel Uma Maheswari, Krishnan Sethusankar
• Format: Article
• Language: English
• Published: International Union of Crystallography 2012-12-01
• Series: Acta Crystallographica Section E
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S1600536812045084
• ISSN: 1600-5368

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—H...Cl interactions and C—Cl...O 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].