organic compounds
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In the title compound, C13H19N3S, the methylamine substituent is coplanar with the thiadiazole ring to which it is attached [C—N—C—S torsion angle = 175.9 (2)°] and the amine H atom is syn to the thiadiazole S atom. Supramolecular chains along [101], sustained by N—HN hydrogen bonding, feature in the crystal packing.
organic compounds
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In the title compound, C26H34F2N6S, the triazole ring is linked to a benzene ring via an imine bond [N=C = 1.255 (2) Å; conformation: E], with a dihedral angle of 25.21 (11)° between the rings. The 4-ethylpiperazinyl residue is folded away from the thione-S atom. In the crystal, helical supramolecular chains propagating along [010] and sustained by weak C—Sπ(triazole) interactions occur [Scentroid distance = 3.2872 (10) Å]. Links between these chains are of the type benzene-C—HN(imine) and π–π [between centrosymmetrically related benzene rings with an inter-centroid distance of 3.9241 (15) Å] and result in a three-dimensional architecture.
organic compounds
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In the title compound, C25H32F3N5S, two independent molecules comprise the asymmetric unit and are related across a pseudo-centre of inversion. The piperazine rings have chair conformations with each N-bound substituent occupying an equatorial position so that the dihedral angles between the planes of the triazole and benzene ring are 78.20 (19) and 79.10 (19)° for the two independent molecules, indicating that the molecules have an L-shape. In the crystal, a three-dimensional architecture is stabilized by C—Hπ interactions. The crystal studied was an inversion twin with the fractional contribution of the minor component being 0.27 (9).
organic compounds
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In the title compound, C19H23N3OS, the oxadiazole and benzene rings are inclined at a dihedral angle of 50.30 (11)°, with the major twist between them occurring at the ring–methylene N—C bond [N—N—C—N torsion angle = −101.2 (2)°]. In the crystal, helical supramolecular chains along [010] are sustained by N—HS hydrogen bonds. These are linked into layers lying parallel to (-101) by methylene–phenyl C—Hπ interactions.
organic compounds
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In the title compound, C19H22FN3OS, the dihedral angle between the inclined oxadiazole and benzene rings is 52.7 (3)°. In the crystal, helical supramolecular chains along [100] are sustained by N—HS hydrogen bonds supported by methylene–benzene C—Hπ interactions. The crystal studied was an inversion twin with the fractional contribution of the minor component being 0.33 (14).