Acta Cryst. (2013). E69, o245
[ doi:10.1107/S160053681300127X ]

3-[2-(Triphenylphosphanylidene)acetyl]-2H-chromen-2-one

M. Taha, N. H. Ismail, A. N. Aziza, S. A. A. Shah and S. Yousuf

Abstract: In the title compound, C₂₉H₂₁O₃P, a coumarin-substitued ylid, the P atom is linked to three benzene rings and a planar coumarin moiety via a methylenecarbonyl group. The bond lengths in the P=C-C=O fragment clearly indicate a delocalized system involving the olefinic and carbonyl bonds. The molecular structure is stabilized by an intramolecular C-HO interaction that results in an S7 graph-set ring motif. In the crystal, molecules are linked into a three-dimensional framework by C-HO hydrogen bonds.

Copyright © International Union of Crystallography
IUCr Webmaster