Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2013 Feb 1;69(Pt 2):o245.
doi: 10.1107/S160053681300127X. Epub 2013 Jan 19.

3-[2-(Triphenyl-phosphanyl-idene)acet-yl]-2H-chromen-2-one

Muhammad Taha  1 , Nor Hadiani Ismail, Ahmad Nazif Aziza, Syed Adnan Ali Shah, Sammer Yousuf
Affiliations

3-[2-(Triphenyl-phosphanyl-idene)acet-yl]-2H-chromen-2-one

Muhammad Taha et al. Acta Crystallogr Sect E Struct Rep Online. .

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.

PubMed Disclaimer

Figures

Fig. 1.
Fig. 1.
The molecular structure of the title compound with the atom numbering scheme. Displacement ellipsoids are drawn at the 30% probability level. H atoms are presented as small spheres of arbitrary radius.
Fig. 2.
Fig. 2.
A view of the C—-H···O hydrogen bonds (dotted lines) in the crystal structure of the title compound. H atoms non-participating in hydrogen- bonding were omitted for clarity.
See this image and copyright information in PMC

References

    1. Bruker (2000). SADABS, APEX2 and SAINT Bruker AXS Inc., Madison, Wisconsin, USA.
    1. Czerpack, R. & Skolska, S. (1982). Med. Dosw. Microbiol. 34, 37–50. - PubMed
    1. El-Ansary, S. L., Aly, E. I. & Halem, M. A. (1992). Egypt. J. Pharm. Sci. 33, 379–390.
    1. Jund, L., Corse, J., King, A. S., Bayne, H. & Mihrag, K. (1971). Phytochemistry, 10, 2971–2974.
    1. Kabak, M., Elmali, A. & Elerman, Y. (1999). J. Mol. Struct. 477, 151–158.