Crystal Structure of 3-Bromo-7-(dimethylamino)-4-methylcoumarin
نویسندگان
چکیده
منابع مشابه
Crystal structure of 7,8-dihydroxy-4-methylcoumarin.
The structure of 7,8-dihydroxy-4-methylcoumarin was determined by an X-ray diffraction method. The compound crystallized in the triclinic space group P1, Z = 2, with a = 7.631(2), b = 9.456(5), c = 7.075(3)A, alpha = 103.13(3), beta = 91.84(3), gamma= 68.21(3) degrees, and V= 460.9(3)A3. The X-ray crystal structure was also compared with those of 5,7-dihydroxy-4-methylcoumarin and 7-hydroxy-4-m...
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coumarin derivatives are of great interest in view of their sensitizing abilities in photodynamic effects and their wide occurrence in the plant kingdom. Umbelliferone, 7hydroxycoumarin, which has been known as a strongly fluorescing compound, also exhibits chemiluminescence.1 On the other hand, 7-hydroxy-4-methyl coumarin2 (Fig. 1-(I))has been applied in laser gain studies. The title compound ...
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In the title compound, C10H4BrFO3, a brominated and fluorinated 3-formyl-chromone derivative, all atoms are essentially coplanar (r.m.s. deviation of 0.025 Å for the non-H atoms), with the largest deviation from the least-squares plane [0.050 (6) Å] being for a benzene-ring C atom. In the crystal, mol-ecules are linked through stacking inter-actions [centroid-centroid distance between the benze...
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The crystal structure of the title compound, C7H4BrNO, has been determined, revealing a partial mol-ecular packing disorder such that a 180° rotation of the mol-ecule about the phenol C-O bond results in disorder of the bromine and nitrile groups. The disorder has been parameterized as a disorder of only the bromine and nitrile substituents on a unique phenol ring. An intra-molecular O-H⋯Br con...
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In the title compound, C17H11Br2N3O4, the dihedral angle between the planes of the naphthalene system and the benzene ring is 52.86 (8)°. The nitro substituent and the attached naphthalene system are almost coplanar [dihedral angle = 5.6 (4)°], probably as a consequence of an intra-molecular N-H⋯O hydrogen bond with the amine group. The nitro substituent attached to the benzene ring is disorder...
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ژورنال
عنوان ژورنال: X-ray Structure Analysis Online
سال: 2016
ISSN: 1883-3578
DOI: 10.2116/xraystruct.32.3