منابع مشابه
8-Methoxy-2H-chromene-3-carbaldehyde
In the title mol-ecule, C11H10O3, the fused dihydro-pyran ring is in a half-chair conformation with the O atom and the methyl-ene C atom positioned 0.1318 (13) and 0.143 (2) Å, respectively, on either side of the mean plane formed by the other four atoms. In the crystal, weak C-H⋯O hydrogen bonds link mol-ecules along [001].
متن کامل7-Diethylamino-2-oxo-2H-chromene-3-carbaldehyde
In the title compound, C(14)H(15)NO(3), all non-H atoms except for those of the methyl and the disordered ethyl groupare approximately co-planar, the largest deviation from the mean plane being 0.0223 (13) Å at the N atom. In the crystal, the packing of mol-ecules through weak inter-molecular C-H⋯O hydrogen-bonding inter-actions leads to the formation of layers parallel to bc plane. Within thes...
متن کامل8-Chloro-4-oxo-4H-chromene-3-carbaldehyde
In the title compound, C10H5ClO3, a chlorinated 3-formyl-chromone derivative, all atoms are essentially coplanar (r.m.s. deviation = 0.032 Å for the non-H atoms), with the largest deviation from the least-squares plane [0.0598 (14) Å] being for a pyran-ring C atom. In the crystal, mol-ecules are linked through stacking inter-actions along the b axis [shortest centroid-centroid distance between ...
متن کامل6-Chloro-8-nitro-4-oxo-4H-chromene-3-carbaldehyde
In the title compound, C10H4ClNO5, the non-H atoms of the 6-chloro-chromone unit are coplanar (r.m.s. deviation = 0.017 Å) with the largest deviation from the mean plane [0.031 (2) Å] being found for the C=O C atom. The nitro group (NO2) is inclined to the chromone unit mean plane by 13.3 (2) °. The formyl group is also twisted with respect to the attached ring [C-C-C-O torsion angles = 10.8 (4...
متن کاملCinnamyl 8-methoxy-2-oxo-2H-chromene-3-carboxylate
In the crystal structure of the title compound, C(20)H(16)O(5), the mol-ecule assumes an E configuration with the benzene ring and chromenecarboxyl group located on opposite ends of the C=C double bond. The chromene ring system and benzene ring are oriented at a dihedral angle of 74.66 (12)°. Weak inter-molecular C-H⋯O hydrogen bonding is present in the crystal structure.
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Structure Reports Online
سال: 2012
ISSN: 1600-5368
DOI: 10.1107/s1600536812047319