4-Phenyl-3-(pyridin-4-yl)-1H-1,2,4-triazole-5(4H)-thione

In the title compound, C₁₃H₁₀N₄S, the almost ideally planar triazole ring forms dihedral angles of 58.5 (1) and 36.9 (1)° with the phenyl and pyridine planes, respectively. The planes of the phenyl and pyridyl substituents form a dihedral angle of 58.5 (1)° with each other. The crystal packing is stabilized by intermolecular N—H...N hydrogen bonds.

1-(1-Benzofuran-2-yl)ethanone O-(2-chloro­benzo­yl)oxime

The title compound, C₁₇H₁₂ClNO₃, displays the characteristic features of benzofuran derivatives. The molecule is not planar. Inter­molecular C—H...O inter­actions help to stabilize the structure.

2-Acetyl-3-amino-1-benzo­furan

The title compound, C₁₀H₉NO₂, displays the characteristic features of a benzo­furan derivative. The molecular structure is nearly planar with an intramolecular N—H...O hydrogen bond involving the amino group and the acetyl carbonyl O atom. In the crystal structure, there are intermolecular N—H...O and C—H...O interactions, which help to stabilize the structure.

2-Acetyl-3-(benzoyl­amino)-1-benzo­furan

The title compound, C₁₇H₁₃NO₃, displays the characteristic features of benzo­furan derivatives. The mol­ecule is nearly planar. An intramolecular N—H...O hydrogen bond, together with π—π stacking interactions, helps to stabilize the structure.

2-Acetamido­benzonitrile

The title compound, C₉H₈N₂O, was synthesized from 2-cyano­aniline and acetyl chloride in dry acetone. The crystal structure is stabilized by an intra­molecular C—H...O hydrogen-bond contact, which forms a six-membered ring, and two inter­molecular N—H...N and C—H...O hydrogen bonds.

N-(4-Chloro-2-nitro­phen­yl)-N-methyl-N′-(quinolin-4-ylmethyl­ene)hydrazine

In the title compound, C₁₇H₁₃ClN₄O₂, the dihedral angle between the benzene and quinoline ring systems is 20.95 (4)°. C—H...O and C—H...N hydrogen bonds, as well as π–π stacking inter­actions, are observed in the crystal structure.

(Z)-6-{[1,3-Dihydr­oxy-2-(hydroxy­meth­yl)propan-2-ylamino]methyl­ene}-2-meth­oxy-4-{(E)-[3-(trifluoro­meth­yl)phen­yl]diazen­yl}cyclo­hexa-2,4-dienone

The mol­ecule of the title compound, C₁₉H₂₀F₃N₃O₅, at 150 K, is nearly planar and exists in the keto–amine (N—H...O) tautomeric form, with a strong intra­molecular hydrogen bond of 2.585 (2) Å between the O and N atoms. The configuration around the azo –N=N– double bond is trans, as found for other diazene derivatives, and the dihedral angle between the planes of the two aromatic rings is 7.81 (4)°.