rac-(E,E)-N,N′-Bis(2-chloro­benzyl­idene)cyclo­hexane-1,2-di­amine

In the title racemic Schiff base ligand, C(20)H(20)Cl(2)N(2), which was prepared by the condensation of 2-chloro­benzaldehyde and cyclo­hexane-1,2-di­amine, the cyclo­hexane ring adopts a chair conformation and the dihedral angle between the aromatic rings of the 2-chloro­phenyl substituent groups is 62.52 (8)°. In the structure, there are two short intra­molecular methine C—H⋯Cl inter­actions [C⋯Cl = 3.066 (2) and 3.076 (3) Å], and in the crystal there are also weak inter­molecular aromatic C—H⋯Cl [3.464 (3), 3.553 (3) and 3.600 (3) Å] and Cl⋯Cl [3.557 (3) and 3.891 (3) Å] contacts.