Crystal structure of 2',4'-dimethoxy-3-hydroxyflavone, C17H14O5
نویسندگان
چکیده
منابع مشابه
Crystal structure of 6,7-dimethoxy-triptycenequinone.
derivatives, a weak intermolecular donor-acceptor (D-A) interaction between the quinone (A) and the benzene or methylsubstituted benzene (D) moieties contributes to connect the molecules to a ribbon-like supramolecular unit.1,2 It seems reasonable that the benzene moiety substituted by methyl groups, which is better donor, tend to participate in the D-A interaction preferentially, for example i...
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The crystal structure of the title chiral Schiff base compound (E)-3,4-dimethoxy[(1-phenylethyl)iminomethyl]bezyne (1) was determined by single-crystal X-ray diffraction data. The title compound was further characterized by elemental analyses (CHN), FT-IR, 1H-NMR and UV-Vis spectroscopic techniques. It crystallizes in the monoclinic space group P21 with unit cell parameters: a = 19.0121 (2), b...
متن کاملProton-transfer spectroscopy of 3-hydroxyflavone in an isolated-site crystal matrix.
The isolated-site low-temperature crystal matrix (dilute solutions in heptane and in octane) ( Shpol ' skii matrix) is shown to be operative for the spectroscopic study of 3- hydroxyflavone luminescence. The observed luminescence is demonstrated to be unique proton-transfer fluorescence from the excited tautomer. A separate study at higher concentrations of aggregated molecule luminescence and ...
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The title compound, C26H20O5, crystallizes with two independent molecules (A and B) in the asymmetric unit, which differ primarily in the location of the -OCH3 groups. In the crystal, the mol-ecules form a layered structure parallel to (10-1) by C-H⋯O hydrogen-bonded networks. Adjacent layers are also linked by further C-H⋯O hydrogen bonds, forming a three-dimensional structure.
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ژورنال
عنوان ژورنال: Zeitschrift für Kristallographie - New Crystal Structures
سال: 2001
ISSN: 2197-4578,1433-7266
DOI: 10.1524/ncrs.2001.216.14.313