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Acta Cryst. (2013). E69, o1284-o1285  [ doi:10.1107/S1600536813019508 ]


R. Sandhya, M. Sithambaresan, S. Prathapan and M. R. P. Kurup

Abstract: The phenyl and tert-butyl groups of the title compound, C27H25NO3, exhibit a trans configuration in agreement with the stereochemistry of the Z phenyl-N-tert-butylnitrone starting material. The attached carbonyl groups are not coplanar with the neighboring dihydroisoxazole ring and the phenyl rings they are bonded to, with torsion angles of 59.26 (8), 17.53 (11), 16.52 (12) and 52.86 (7)°. The dihedral angle between the dihydroisoxazole ring and the directly attached phenyl group is 86.86 (8)°. There are two nonclassical intermolecular C-H...O hydrogen-bonding interactions that operate together with an intermolecular C-H...[pi] interaction to form a supramolecular architecture in the crystal system.

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