Acta Cryst. (2004). E60, o207-o209  [ doi:10.1107/S1600536804000121 ]

3,5-Bis(4-methylbenzoyl)-2,6-bis(4-methylphenyl)-4H-pyran-4-one

M. Dinçer, I. Yildirim, I. Koca and N. Özdemir

Abstract: The title compound, C₃₅H₂₈O₄, is a tetrasubstituted 4H-pyran-4-one with 2,6-bis(p-tolyl) and 3,5-bis(p-toluyl) substituents. The pyran ring is almost planar; the planes of the toluyl substituents are approximately orthogonal to the pyran mean plane [both dihedral angles are equal to 86.2  (1)°], whereas the tolyl planes form with the latter much smaller dihedral angles of 32.5  (1) and 47.2  (1)°. The crystal structure features two intramolecular C-HO contacts and a C-H(ring) interaction, with an HCg distance of 2.70  (3)  Å (Cg is the centroid of one of the benzene rings).

Online 17 January 2004

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