60 research outputs found
2-(4-Isobutylphenyl)-N′-[1-(4-nitrophenyl)ethylidene]propanohydrazide
The molecule of the title compound, C21H25N3O3, exists in a trans configuration with respect to the ethylidene unit. The dihedral angle between the two substituted benzene rings is 86.99 (7)°. The nitro group is twisted from the attached benzene ring at an angle of 17.02 (7)°. In the crystal structure, molecules are linked by pairs of N—H⋯O hydrogen bonds in a face-to-face manner into centrosymmetric dimers. These dimer units are further linked into chains along the c axis by weak C—H⋯O interactions. These chains are stacked along the b axis. The crystal is further stabilized by weak C—H⋯π interactions
N′-[(E)-1-Phenylethylidene]benzohydrazide
The title compound, C15H14N2O, crystallized with two independent molecules in the asymmetric unit. Both molecules are non-planar and have an E configuration with respect to the C=N bond. The dihedral angles between the two benzene rings are 11.1 (2)° in one molecule and 12.40 (19)° in the other. In the crystal structure, the molecules are linked by N—H⋯O hydrogen bonds and weak C—H⋯O interactions into infinite one-dimensional chains along [1 0 0]. The crystal structure is further stabilized by N—H⋯O hydrogen bonds, weak C—H⋯O and very weak C—H⋯π interactions
5-[(4-Methoxybenzyl)sulfanyl]-2-methyl-1,3,4-thiadiazole
The title molecule, C11H12N2OS2, is twisted with a dihedral angle of 83.63 (12)° between the 1,3,4-thiadiazole and benzene rings. The methoxy group deviates slightly from the attached benzene ring, with a C—C—O—C torsion angle of 4.2 (4)°. In the crystal, molecules are linked by weak C—H⋯N interactions and stacked along the c axis
4-Amino-3-{1-[4-(2-methylpropyl)phenyl]ethyl}-1H-1,2,4-triazole-5(4H)-thione
In the title triazole compound, C14H20N4S, the dihedral angle between the triazole and benzene rings is 83.29 (11)°. The methine H atom and two methyl groups of the isobutyl group are disordered over two sites with occupancies of 0.684 (9) and 0.316 (9). In the crystal structure, N—H⋯S hydrogen bonds link the molecules into chains running along the b axis. These chains are cross-linked into a two-dimensional network parallel to the ab plane by C—H⋯S hydrogen bonds
4-[(E)-2,6-Dichlorobenzylideneamino]-3-{1-[4-(2-methylpropyl)phenyl]ethyl}-1H-1,2,4-triazole-5(4H)-thione
In the title Schiff base compound, C21H22Cl2N4S, the triazole ring makes dihedral angles of 2.15 (11) and 87.48 (11)° with the 2,6-dichlorophenyl and methylpropylphenyl rings, respectively. Weak intramolecular C—H⋯S and C—H⋯Cl interactions generate S(6) and S(5) ring motifs, respectively. In the crystal structure, centrosymmetrically related molecules are linked into dimers by N—H⋯S hydrogen bonds. These dimers are arranged into sheets parallel to the ab plane and are stacked along the c axis. C—H⋯π interactions involving the methylpropylphenyl ring and π–π interactions involving the dichlorophenyl ring [centroid–centroid distance = 3.5865 (3) Å] are also observed
- …