3,5,7-Trimethoxy-2-(4-methoxyphenyl)-4H-1-benzopyran-4-one
نویسندگان
چکیده
In the title compound, C(19)H(18)O(6), also known as 3,4',5,7-tetra-methoxy-flavone, the dihedral angle between the benzopyran-4-one group and the attached benzene ring is 11.23 (8)°. An intra-molecular C-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, mol-ecules are linked into a two-dimensional network parallel to (01) by inter-molecular C-H⋯O hydrogen bonds, which generate R(4) (4)(20), R(4) (4)(12) and R(2) (2)(14) ring motifs. Adjacent networks interact by π-π inter-actions between the pyran ring and its methoxy-phenyl substituent [centroid-centroid distance = 3.5267 (8) Å].
منابع مشابه
5,7-Dimethoxy-2-(4-methoxyphenyl)-4H-1-benzopyran-4-one methanol solvate monohydrate
In the title compound (alternatively called 4',5,7-trimethoxy-flavone methanol solvate hydrate), C(18)H(16)O(5)·CH(3)OH·H(2)O, the flavone mol-ecule is almost planar, the inter-planar angle between the planes of the benzopyran-4-one group and the attached benzene ring being 4.69 (9)°. In the crystal, the flavone mol-ecule makes inter-molecular C-H⋯O hydrogen bonds to adjacent inversion-related ...
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عنوان ژورنال:
دوره 65 شماره
صفحات -
تاریخ انتشار 2009