3-[(E)-(4-Ethylphenyl)iminomethyl]benzene-1,2-diol

Abstract

The title compound, C15H15NO2, adopts the enol-imine tautomeric form. The dihedral angle between the two benzene rings is 48.1 (1)degrees. Intramolecular O-H center dot center dot center dot N and O-H center dot center dot center dot O hydrogen bonds generate S(6) and S(5) ring motifs, respectively. In the crystal, molecules are linked into centrosymmetric R-2(2)(10) dimers via pairs of O-H center dot center dot center dot O hydrogen bonds and the dimers may interact through very weak by pi-pi interactions [centroid-centroid distance = 4.150 (1) angstrom]. The ethyl group is disordered over two orientations, with occupancies of 0.587 (11) and 0.413 (11).