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In the title compound, C12H11NO4, the dihedral angle between the benzene and isoxazole rings is 42.52 (8)°. The carboxylic acid group is close to being coplanar with the isoxazole ring [dihedral angle = 5.3 (2)°]. In the crystal, inversion dimers linked by pairs of O—H
O hydrogen bonds generate R22(8) loops.
O hydrogen bonds generate R22(8) loops.organic compoundsOpen access
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In the title compound, C11H9NO3, the phenyl and isoxazole rings form a dihedral angle of 56.64 (8)°. The carboxy group is almost in the same plane as the isoxazole ring with a C—C—C—O torsion angle of −3.3 (2)°. In the crystal, pairs of O—HO hydrogen bonds link the molecules into head-to-head dimers. C—HN hydrogen bonds and π–π stacking interactions between phenyl rings [centroid–centroid distance = 3.9614 (17)Å] link the dimers into a three-dimensional network.
O hydrogen bonds link the molecules into head-to-head dimers. C—HN hydrogen bonds and π–π stacking interactions between phenyl rings [centroid–centroid distance = 3.9614 (17)Å] link the dimers into a three-dimensional network.organic compoundsOpen access
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In the title compound, C13H13NO3, the dihedral angle between the phenyl and isoxazole rings is 43.40 (13)°. The ethoxycarbonyl group is rotated out of the plane of the isoxazole ring by 16.2 (13)°.
organic compoundsOpen access
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The asymmetric unit of the title compound C25H19N5OS, contains two molecules, A and B. In molecule A, the dihedral angles between the pyrazole ring and the C-bound phenyl group, the N-bound phenyl group and the thiadiazole ring are 32.30 (14), 52.25 (14) and 34.94 (12)°, respectively. The corresponding angles in molecule B are 33.32 (14), 50.67 (15), and 70.30 (12)°, respectively. In the crystal, the A and B molecules are linked by pairs of N—HN hydrogen bonds, generating R22(8) loops. This dimer linkage is reinforced by two C—HO hydrogen bonds and one C—HN hydrogen bond.
N hydrogen bonds, generating R22(8) loops. This dimer linkage is reinforced by two C—HO hydrogen bonds and one C—HN hydrogen bond.organic compoundsOpen access
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In the title compound, C24H20N4O2, the pyrazole ring makes dihedral angles of 47.57 (10)° and 30.56 (11)° with its N-bound and C-bound phenyl groups, respectively. The C—N—N—C group that links the two carbonyls has a torsion angle of 81.5 (2)°. The torsion angles between the carbonyl groups and their adjacent pyrazole and phenyl rings are 125.89 (19) and 164.22 (17)°, respectively. In the crystal, pairs of molecules are linked by N—HO hydrogen bonds into R22(10) ring motifs, which in turn link to form chains that propagate parallel to the c-axis direction.
O hydrogen bonds into R22(10) ring motifs, which in turn link to form chains that propagate parallel to the c-axis direction.
