organic compounds
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In the title compound, C12H8F2N2OS, the thienyl ring is disordered over two positions, with the S atom of the major component [occupancy = 75.03 (18)%] oriented away from an ortho-F atom of the benzene ring. The molecule is nearly planar, the dihedral angle between the thiophene and benzene rings being 6.19 (18) (in the major component) or 3.5 (6)° (in the minor component). The azomethine C=N double-bond in the molecule is of an E configuration. In the crystal, molecules are linked by pairs of N—HO hydrogen bonds, generating inversion dimers.
organic compounds
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The title molecule, C18H19N3O3, lies on a mirror plane that bisects the adamantyl group. In the crystal, C—HO and C—HN interactions lead to supramolecular chains along [100]. These assemble into layers in the ab plane via π–π interactions [centroid–centroid distance = 3.6548 (7) Å] between the oxadiazole and benzene rings.
organic compounds
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In the title compound, C18H22BrN3OS, the piperidine ring adopts a chair conformation. The mean plane of the thiazole ring forms dihedral angles of 23.97 (10) and 75.82 (10)° with the mean planes of its adjacent benzene and piperidine rings, respectively. An intramolecular N—HN hydrogen bond generates an S(7) ring motif in the molecule. In the crystal, no significant intermoelcular hydrogen bonds are observed, but a weak π–π interaction with a centroid–centroid distance of 3.8855 (13) Å occurs.
organic compounds
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The asymmetric unit of the title compound, C13H11BrN2OS, consists of two crystallographically independent molecules (A and B). In each molecule, the pyrrolidine ring adopts an envelope conformation with a methylene C atom as the flap atom. In molecule A, the central thiazole ring makes a dihedral angle of 36.69 (11)° with the adjacent phenyl ring, whereas the corresponding angle is 36.85 (12)° in molecule B. The pyrrolidine ring is slightly twisted from the thiazole ring, with C—N—C—N torsion angles of 4.8 (3) and 3.0 (4)° in molecules A and B, respectively. In the crystal, C—Hπ and π–π [centroid-to-centroid distance = 3.7539 (14) Å] interactions are observed. The crystal studied was a pseudo-merohedral twin with twin law (-100 0-10 101) and a refined component ratio of 0.7188 (5):0.2812 (5).