Electronic Resource
Copenhagen
:
International Union of Crystallography (IUCr)
Acta crystallographica
57 (2001), S. o289-o291
ISSN:
1600-5368
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The crystal structure of the title compound, 5,3′-dihydroxy-6,7,4′-trimethoxyflavone, C18H16O7, isolated from Ballota limbata Linn., contains discrete molecules with normal molecular dimensions. The structure is stabilized by intramolecular and intermolecular hydrogen bonds between hydroxyl H atoms and carbonyl O atoms, with O...O interactions of 2.594 (2) and 2.673 (2) Å. The flavone moiety is essentially planar with methoxy methyl groups lying 0.169 (3)–0.851 (2) Å out of the plane.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S1600536801003609
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