(1Z,1′Z,3E,3′E)-1,1′-Diphenyl-3,3′-[(1S,2S)-cyclo­hexane-1,2-diyldinitrilo]dibut-1-en-1-ol

A new tetra­dentate chiral Schiff base ligand, C(26)H(30)N(2)O(2), has been synthesized by the reaction of 1-phenyl­butane-1,3-dione with (1S,2S)-(−)-1,2-diamino­cyclo­hexane. The chiral centers in the mol­ecule have the same S configuration, since the absolute configuration was determined by that of the starting reagent (1S,2S)-(−)-1,2-diamino­hexane. The cyclo­hexane ring is in a chair conformation, and the substituents are equatorial in the most stable conformation (trans-cyclo­hexyl). The crystal structure is stabilized by two intra­molecular O—H⋯N hydrogen bonds and a weak C—H⋯π inter­action.