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The asymmetric unit of the title compound, C 21 H 17 Cl 2 N 3 , contains two crystallographically independent mol-ecules ( A and B ). Both mol-ecules have E configurations for both imine double bonds with regard to the aryl and pyridine groups. The conformations of the two mol-ecules differ with the 4-chloro-phenyl rings being inclined to the central pyridine ring by 77.64 (6) and 86.18 (6)° in mol-ecule A , and 80.02 (5) and 43.41 (6)° in mol-ecule B . In the crystal, mol-ecules are linked by a number of C-H⋯π inter-actions, forming layers parallel to the bc plane.

acta crystallographica section e crystallographic communications

Crystal structure of a new 2,6-bis(imino)pyridine derivative: (1E,1′E)-1,1′-(pyridine-2,6-diyl)bis[N-(4-chlorophenyl)ethan-1-imine]