Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 2 (February 2013)

organic compounds

Acta Cryst. (2013). E69, o183    [ doi:10.1107/S1600536812051689 ]


S. J. Sabounchei, P. Shahriary, F. Hosseini Fashami, D. Morales-Morales and S. Hernandez-Ortega

Abstract: In the title ylide, C31H28ClO2P [common name [alpha]-acetyl-[alpha]-p-chloro­benzoyl­methyl­enetri(p-tol­yl)phospho­rane], the dihedral angle between the 4-chloro­phenyl ring and that of the ylide moiety is 66.15 (10)°. The geometry around the P atom is slightly distorted tetra­hedral [angle range = 105.22 (8)-115.52 (9)°] and the carbonyl O atoms are syn-oriented with respect to the P atom. The ylide group is close to planar [maximum deviation from the least-squares plane = 0.006 (2) Å] and the P-C, C-C and C=O bond lengths are consistent with electron delocalization involving the O atoms.

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