6,6'-Di­methoxy-2,2'-[(1R,2R)-cyclo­hexane-1,2-diyl­bis­(nitrilo­methyl­idyne)]­diphenol: three C-H...O hydrogen bonds generate a three-dimensional framework

Molecules of the title compound, alternatively called (R,R)-N,N'-bis(3-methoxysalicylidene)-trans-cyclohexane-1,2-diamine, C₂₂H₂₆N₂O₄, contain two intramolecular O-H...N hydrogen bonds and adopt a conformation with approximate twofold rotational symmetry. The mol­ecules are linked by three C-H...O hydrogen bonds [H...O = 2.45-2.55 Å, C...O = 3.329 (2)-3.398 (2) Å and C-H...O = 142-172°] into a continuous framework.