منابع مشابه
Crystal structure of 5,7-dihydroxy-3-methylcoumarin.
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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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...
متن کاملCrystal structure of 3-carbamothioylpyridinium thiocyanate
In the cation of the title salt, C6H7N2S(+)·SCN(-), the C=S bond is oriented trans with respect to the C-C=N fragment in the pyridine ring. The planes of the aromatic ring and the thio-amide fragment of the cation make a dihedral angle of 38.31 (4)°. In the crystal, the components are linked by N-H⋯S and N-H⋯N, hydrogen bonds, forming a two-dimensional network parallel to (10-1).
متن کاملCrystal structure of 3-(hydroxymethyl)chromone
In the title compound, C10H8O3 (systematic name 3-hy-droxy-methyl-4H-chromen-4-one), the fused-ring system is slightly puckered [dihedral angle between the rings = 3.84 (11)°]. The hy-droxy O atom deviates from the heterocyclic ring by 1.422 (1) Å. In the crystal, inversion dimers linked by pairs of O-H⋯O hydrogen bonds generate R 2 (2)(12) loops. The dimers are linked by aromatic π-π stacking ...
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ژورنال
عنوان ژورنال: Bulletin of the Korean Chemical Society
سال: 2010
ISSN: 0253-2964
DOI: 10.5012/bkcs.2010.31.04.1041