N,N-Bis(2-cyano­eth­yl)-p-toluene­sulfonamide

In the title compound, C₁₃H₁₅N₃O₂S, the geometric parameters are in the normal ranges. The amide N atom is coordinated in an almost trigonal-planar fashion.

(2-Chloro­anilino)acetophenone

The title compound, C₁₄H₁₂ClNO, is used in perfumery, as a catalyst for the polymerization of olefins, and in organic synthesis, especially as a photosensitizer and in the manufacture of dyes. The mol­ecule is essentially planar and has a trans configuration. In this configuration, the Cl and O atoms shield the amino H atom, preventing the formation of an inter­molecular hydrogen bond.

Inter­molecularly associated carboxylic acid dimers in the supramolecular assembly of 2-(2-phenyl­ethyl)benzoic acid

The mol­ecular structure of the title acid, C₁₅H₁₄O₂, exhibits a trans-planar arrangement of the aromatic rings. The carboxyl group is inclined at an angle of 6.4 (1)° with respect to the attached benzene ring. The classical hydrogen-bonded carboxylic acid dimers (O...O = 2.7 Å), characterized by an R²₂(8) pattern, predominantly stabilize the supramolecular assembly.

4-tert-Butyl-γ-chloro­butyrophenone

The title compound, C₁₄H₁₉ClO, possesses C_s symmetry with all but two C atoms of the tert-butyl group lying in the mirror plane. In the crystal structure, the mol­ecules stack along the b axis and are connected by weak C—H...π inter­actions.

5-Chloro­carbonyl-10,11-dihydro-5H-dibenz[b,f]azepine

In the title compound, C₁₅H₁₂ClNO, the central seven-membered azepine ring adopts a bent conformation, intermediate between the boat and chair forms. The overall structure of the mol­ecule is similar to a butterfly shape, which is commonly observed for carbamazepine analogues. The planes through the benzene rings on either side of the azepine ring inter­sect at an angle of 59.0 (1)°. The mol­ecular assembly is primarily stabilized by aromatic π–π inter­actions.

1-(2-Bromo-5-methoxy­phen­yl)-8-chloro-6-(2-fluoro­phen­yl)-4H-1,2,4-triazolo[4,3-a][1,4]benzodiazepine

The title compound, C₂₃H₁₅BrClFN₄O, is an analogue of sedatives such as midazolam and alprazolam. Its geometrical parameters are normal and comparable with those of related compounds. The only possible significant inter­molecular inter­action is a C—H...O bond.

3-Chloro-4-hydr­oxy-4′-methyl­benzophenone

The title compound, C₁₄H₁₁ClO₂, possesses normal geometrical parameters. The two benzene rings are twisted by 54.70 (4)°, perhaps as a result of steric repulsion between H atoms. The crystal packing is consolidated by an O—H...O hydrogen bond, π–π stacking and C—H...O and C—H...π inter­actions, resulting in a two-dimensional network.