N¹-[(1H-Imidazol-2-yl)methyl­idene]-N⁴-phenyl­benzene-1,4-di­amine

The title compound, C₁₆H₁₄N₄, is non-planar with dihedral angles between the planes of the imidazole and phenyl­enedi­amine rings of 30.66 (4)° and between the planes of the phenyl­enedi­amine and N-phenyl rings of 56.63 (7)°. In the crystal, mol­ecules are connected by N—H...N hydrogen bonds, generating a chain extending along the b-axis direction. The crystal structure is also stabilized by C—H...π inter­actions between N-phenyl and imidazole rings and slipped π–π stacking inter­actions between imidazole rings [centroid–centroid distance = 3.516 (4) Å] giving an overall two-dimensional layered structure lying parallel to (010).

2,2,6,6-Tetra­bromo-3,4,4,5-tetra­meth­oxy­cyclo­hexa­none

In the title compound, C₁₀H₁₄Br₄O₅, synthesized from the meth­oxy Schiff base N-(pyridin-2-ylmeth­yl)meth­oxy­aniline and mol­ecular bromine, the cyclo­hexa­none ring has a chair conformation with one of the four meth­oxy groups equatorially orientated with respect to the carbonyl group and the others axially orientated. The C—Br bond lengthsvary from 1.942 (4) to1.964 (4) Å. In the crystal, weak C—H...O_carbon­yl hydrogen-bonding inter­actions generate chains extending along the b-axis direction. Also present in the structure are two short inter­molecular Br...O_meth­oxy inter­actions [3.020 (3) and 3.073 (4) Å].

Crystal structure of N¹-phenyl-N⁴-[(quinolin-2-yl)methyl­idene]benzene-1,4-di­amine

In the title compound, C₂₂H₁₇N₃, the dihedral angles between the central benzene ring and the terminal phenyl ring and quinoline ring system (r.m.s. deviation = 0.027 Å) are 44.72 (7) and 9.02 (4)°, respectively, and the bond-angle sum at the amine N atom is 359.9°. In the crystal, the N—H group is not involved in hydrogen bonding and the mol­ecules are linked by weak C—H...π inter­actions, generating [010] chains.