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7-Hydroxy-2-(2,3,4-trimethoxyphenyl)-4H-1-benzopyran-4-one: (7-hydroxy-2′,3′,4′-trimethoxyflavone)

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Abstract

7-Hydroxy-2′,3′,4′-trimethoxyflavone, (C18H16O6),M r =328.32 crystallizes in the orthorhombic system, space groupPbna, with the following crystal data:a=8.853(2),b=12.870(2),c=26.293(3)Å,V=2996(1)Å3,Z=8, MoKα, μ=0.67 cm−1,D c =1.454 g·cm−3,F(000)=1376,T=294K. The structure was solved by direct-methods and has been refined by full-matrix least-squares methods to a finalR value (F>σ(F)) of 0.0496. The molecule is not planar, the dihedral angle between the phenyl ring and the fused ring system is 27.3°. There are no intramolecular hydrogen bonds, but intermolecular short hydrogen contacts exist between hydroxyl hydrogen and carbonyl oxygen atoms.

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Author notes

  1. J. C. Wallet

    Present address: Laboratoire de Phytochimie, Faculté des Sciences et Techniques de Saint-Jérôme, Avenue Escadrille Normandie-Niemen, 13397, Marseille, France

Authors and Affiliations

  1. Institut de Ciència de Materials de Barcelona, Campus Universitat de Bellaterra, 08193, Cerdanyola, Spain

    J. Llorca, E. Molins & C. Miravitlles

  2. Medical Foundation of Buffalo, 73 High Street, 14203, Buffalo, New York

    V. Cody & J. C. Wallet

  3. Laboratoire de Phytochimie, ENSSPICAM, Faculté des Sciences et Techniques de Saint-Jérôme, Avenue Escadrille Normandie-Niemen, 13397, Marseille, France

    E. M. Gaydou

Authors
  1. J. Llorca
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  2. E. Molins
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  3. C. Miravitlles
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  4. V. Cody
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  5. J. C. Wallet
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  6. E. M. Gaydou
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Llorca, J., Molins, E., Miravitlles, C. et al. 7-Hydroxy-2-(2,3,4-trimethoxyphenyl)-4H-1-benzopyran-4-one: (7-hydroxy-2′,3′,4′-trimethoxyflavone). Journal of Crystallographic and Spectroscopic Research 23, 481–484 (1993). https://doi.org/10.1007/BF01182522

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  • DOI: https://doi.org/10.1007/BF01182522

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