2-[(5′-Chloro-1,1′:3′,1′′-terphenyl-4′-yl)imino]­acenaphthylen-1(2H)-one

The title compound, C₃₀H₁₈ClNO, is a product of the condensation reaction of acenaphthyl­ene-1,2-dione and 5′-chloro-1,1′:3′,1′′-terphenyl-4′-amine. The acenaphthyl­ene fragment and two terminal phenyl rings are rotated relative to the central benzene ring by 72.2 (3), 43.2 (3) and 41.2 (3)°, respectively. This mol­ecular conformation is supported by weak C—H...π inter­actions. In the crystal, mol­ecules form centrosymmetric dimers by the stacking inter­actions between two neighboring acenaphthyl­ene fragments, with an inter­planar distance of 3.365 (3) Å. The dimers are bound to each other by weak C—H...N and C—H...π inter­actions, forming a three-dimensional framework.

4,6-Di­bromo-N-{3-[(4,6-di­bromo-2,3-di­methyl­phenyl)imino]butan-2-yl­idene}-2,3-di­methyl­aniline

The title compound, C₂₀H₂₀Br₄N₂, is a product of the condensation reaction of 4,6-di­bromo-2,3-di­methyl­aniline and butane-2,3-dione. The mol­ecule has a center of symmetry at the mid-point of the central C-C bond. The dihedral angle between the benzene ring and the 1,4-di­aza­butadiene plane is 78.3 (2)°. Niether hydrogen bonding nor aromatic stacking is observed in the crystal structure.

3-(3-Methyl­phen­yl)-5-(quinolin-8-yl­meth­oxy)-1,2,4-oxa­diazole monohydrate

In the title compound, C₁₉H₁₅N₃O₂·H₂O, the oxa­diazole ring and the quinoline unit are almost coplanar, making a dihedral angle of 7.66 (8)°. The dihedral angle between the benzene ring and the quinoline system is 25.95 (8)° while that between the benzene and the oxa­diazole rings is 18.88 (9)°. The water mol­ecule is hydrogen bonded to an oxa­diazole N atom and to the quinoline N atom. In the crystal, these units are linked via C—H...O hydrogen bonds, forming two-dimensional net­works lying parallel to the ab plane.