Crystal structure of 3,5-bis-(4-chloro-phen-yl)-1-propyl-1,3,5-tri-aza-cyclo-hexane.

In the title mol-ecule, C18H21Cl2N3, the tri-aza-cyclo-hexane ring adopts a chair conformation with both 4-chloro-phenyl substituents in axial positions and the propyl group in an equatorial site. The dihedral angle between the planes of the benzene rings is 49.5 (1)°. In the crystal, mol-ecules are arranged in a head-to-tail fashion, forming columns along [010], and pairs of weak C-H⋯π inter-actions form inversion dimers between columns.

1,3,5-Tris(4-bromo-phen-yl)-1,3,5-triazin-ane di-chloro-methane monosolvate.

In the main mol-ecule of the title compound, C21H18Br3N3·CH2Cl2, the triazinane ring adopts a chair conformation with three 4-brom-ophenyl substituents, two in diaxial positions and the third in an equatorial arrangement (eaa). The torsion angles around the N-C bonds in the triazinane ring are in the range 55.6 (5)-60.1 (5)°. The structure can be described as being built up of alternating layers along the b axis with the CH2Cl2 solvent mol-ecules sandwiched between these layers. No classical hydrogen-bonding inter-actions are observed in the crystal structure.