(E)-2-Meth­oxy-6-[(2-trifluoro­methyl­phenylimino)meth­yl]phenol

The title compound, C₁₅H₁₂NO₂F₃, adopts the phenol–imine tautomeric form. The two aromatic rings are twisted with respect to each other, with a dihedral angle of 17.83 (19)°. O—H...N and O—H...F intra­molecular inter­actions are found in the mol­ecule, and the solid-state structure is stabilized by inter­molecular C—H...O and C—H...F hydrogen bonds, to form a two-dimensional network.

(E)-2-[1,3-Dihydr­oxy-2-(hydroxy­meth­yl)propan-2-ylamino­methyl­ene]-4-[(4-ethyl­phen­yl)diazen­yl]-6-methoxy­cyclo­hexa­none

The title compound, C₂₀H₂₅N₃O₅, adopts the keto–amine tautomeric form and displays the characteristic features of azobenzene derivatives. Intra­molecular N—H...O and O—H...O and inter­molecular O—H...O inter­actions influence the conformation of the mol­ecules and the crystal packing.