Yong-Qi Qin

1-(2-Nitro­phen­yl)-3-phenyl­thio­urea

The title compound, C13H11N3O2S, was prepared by reaction of 2-nitrobenzenamine, KOH and 1-isothiocyanatobenzene in an ethanol solution at room temperature. The dihedral angles formed between the thiourea plane and the phenyl rings are 61.9 and 31.0°. The dihedral angle between the two phenyl rings is 78.1°. In the crystal structure, there are weak intermolecular N—H⋯S and C—H⋯S hydrogen-bonding interactions.

Ethyl (E)-3-anilino-2-cyano-3-mercaptoacrylate.

In the title compound, C12H12N2O2S, there are S—H⋯N and N—H⋯O hydrogen-bond interactions. The N—H⋯O hydrogen bond is bifurcated, with the hydrogen being simultaneously donated to two equivalent O atoms, forming one intra- and one intermolecular N—H⋯O bond with an R 1 2(4) motif. The motif of the S—H⋯N hydrogen bond is R 2 2(12).

(E)-5-Phenyl-N′-(1-phenyl­ethyl­idene)-1H-pyrazole-3-carbohydrazide

In the molecule of the title compound, C18H16N4O, the intramolecular N—H⋯N hydrogen bond results in the formation of a planar five-membered ring, which is also co-planar with the adjacent five-membered ring, being oriented at a dihedral angle of 1.23 (3)°. The dihedral angles formed by the planar pyrazole ring with the adjacent phenyl ring and the other phenyl ring are 7.29 and 11.21°, respectively. The dihedral angle between the two phenyl rings is 18.07°. In the crystal structure, intermolecular N—H⋯O hydrogen bonds link the molecules.

2-(1H-Benzo-1,2,3-triazol-1-yl)-4,4-di­methyl-3-oxo-N-phenyl­pentane­thio­amide monohydrate

The title compound, C19H22N4O2S·H2O, was synthesized in order to search for new benzotriazole compounds with high bioactivity. There are some intermolecular hydrogen-bond interactions in the crystal structure, providing stabilization.

4-[3-(1,2,4-Triazol-1-yl)propion­yl]phen­yl 4-fluoro­benzoate

In the title compound, C-18(14)3(3)H(FN)O, the dihedral angles made by the triazole ring with the plane of the central benzene ring and the p-fluorophenylcarbonyl group are 82.09 ( 2) and 82.05 (2), respectively. There are weak C-H...O intra- and intermolecular interactions in the crystal structure, which contribute to the stability.

(4-Fluoro­benzoyl)(1H-1,2,4-triazol-1-yl)­methyl morpholine-4-carbodi­thio­ate

In the title compound, C15H15FN4O2S2, the morpholine ring adopts a chair conformation. The dihedral angle between the benzene and triazole rings is 77.1 (7)°. There are some weak intermolecular and intramolecular interactions in the crystal structure, providing stabilization.