Polymorphism in the structure of N-(5-methylthiazol-2-yl)-4-oxo-4H-chromene-3-carboxamide
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چکیده
منابع مشابه
Polymorphism in the structure of N-(5-methylthiazol-2-yl)-4-oxo-4H-chromene-3-carboxamide
Chromone derivatives have been extensively studied recently because of to their promising biological activities. The new title chromone-thia-zole hybrid presented here, C14H10N2O3S, is a candidate as a selective ligand for adenosine receptors. The compound has been synthesized and characterized by the usual spectroscopic means (NMR and EM/IE) and its structure elucidated by X-ray crystallograph...
متن کاملN-[2-(4-Chlorophenyl)-5-methyl-4-oxo-1,3-thiazolidin-3-yl]pyridine-3-carboxamide
The title compound, C(16)H(14)ClN(3)O(2)S, crystallizes with two mol-ecules in the asymmetric unit. In the 1,3-thia-zolidine rings, the carbonyl O atoms, the S atoms, the methyl groups and the ring carbon attached to the methyl groups are disordered with occupancy ratios of 0.509 (7):0.491 (7) in one mol-ecule and 0.464 (14):0.536 (14) in the other. The crystal structure is stabilized by inter-...
متن کاملN-[2-(4-Bromophenyl)-5-methyl-4-oxo-1,3-thiazolidin-3-yl]pyridine-3-carboxamide
In the title compound, C(16)H(14)BrN(3)O(2)S, the atoms of the 1,3-thia-zolidine group, except for the N and the C atoms attached to the bromo-benzene ring, are disordered over two sets of sites with occupancies of 0.605 (13) and 0.395 (13). The benzene and pyridine rings make a dihedral angle of 86.2 (2)°. In the crystal, mol-ecules are linked by inter-molecular N-H⋯N and C-H⋯O hydrogen bonds,...
متن کاملN-[5-Methyl-2-(2-nitrophenyl)-4-oxo-1,3-thiazolidin-3-yl]pyridine-3-carboxamide monohydrate
In the title compound, C(16)H(14)N(4)O(4)S·H(2)O, the benzene and pyridine rings make a dihedral angle of 85.8 (1)°. Both enanti-omers of the chiral title compound are statistically disordered over the same position in the unit cell. The methyl and carbonyl group attached to the stereogenic center (C(5) of the thia-zolidine ring) were therefore refined with common site-occupation factors of 0.5...
متن کاملCrystal structure of 4-oxo-4H-chromene-3-carboxylic acid
In the title compound, C10H6O4, also known as 3-carb-oxy-chromone, the non-H atoms of the chromone ring are essentially coplanar (r.m.s. deviation = 0.0057 Å), with the maximum deviation from their least-squares plane [0.011 (2) Å] being for a pyran C atom. The dihedral angle between the fused ring and plane of the carb-oxy group is 3.06 (2)°. An intra-molecular hydrogen bond is formed between ...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section E Crystallographic Communications
سال: 2017
ISSN: 2056-9890
DOI: 10.1107/s2056989017009902