title: 3-[2-(Triphenyl-phosphanyl-idene)acet-yl]-2H-chromen-2-one.
abstract: In the title compound, C(29)H(21)O(3)P, a coumarin-substitued ylid, the P atom is linked to three benzene rings and a planar coumarin moiety via a methyl-enecarbonyl group. The bond lengths in the P=C-C=O fragment clearly indicate a delocalized system involving the olefinic and carbonyl bonds. The mol-ecular structure is stabilized by an intra-molecular C-H⋯O inter-action that results in an S7 graph-set ring motif. In the crystal, mol-ecules are linked into a three-dimensional framework by C-H⋯O hydrogen bonds.
authors: Atta-ur-Rahman Institute for Natural Product Discovery (RiND), Universiti Teknologi MARA (UiTM), Puncak Alam Campus, 42300 Bandar Puncak Alam, Selangor D. E.,  Malaysia.
authors: Muhammad
authors: M
authors: Taha
authors: Nor Hadiani
authors: NH
authors: Ismail
authors: Ahmad Nazif
authors: AN
authors: Aziza
authors: Syed Adnan Ali
authors: SA
authors: Shah
authors: Sammer
authors: S
authors: Yousuf