Crystal structure of methyl 2-hydroxy-5-[(4-oxo-4,5-dihydro-1,3-thiazol-2-yl)amino]benzoate
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The title compound, C11H10N2O4S, crystallized with two independent molecules (AandB) in the asymmetric unit. They differ primarily in the rotational orientation of the five-membered heterocyclic ring. In moleculeAthis ring is inclined to the benzene ring by 48.17 (8)°, while in moleculeBthe same dihedral angle is 23.07 (8)°. In each molecule there is an intramolecular O—H...O hydrogen bond involving the adjacent hydroxyl group and the ester carbonyl O atom. In the crystal, theAmolecules are linkedviapairs of N—H...N hydrogen bonds, forming inversion dimers. These dimers are linked to theBmoleculesviaN—H.·O, C—H...O and C—H...S hydrogen bonds forming corrugated sheets lying parallel to (102).
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2014 ◽
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