(E)-4-Chloro-2-[(4-hy-droxy-3-meth-oxy-benzyl-idene)amino]-phenol

The title compound, C₁₄H₁₂ClNO₃ (I), was obtained from the reaction of 2-amino-4-chloro phenol with vanillin (4-hy-droxy-3-meth-oxy-benzaldehyde). It crystallizes with two conformationally different mol-ecules in the asymmetric unit. In one of the mol-ecules, the 4-chloro-2(methyl-ene-amino)-phenol moiety is partially positionally disordered with the refined occupancies being 0.850 (2):0.150 (2). In both mol-ecules there are intra-molecular O-H⋯O and O-H⋯N hydrogen bonds, all enclosing S(5) ring motifs. The configuration about the azomethine bond is E in both mol-ecules. The extended structure features O-H⋯O, C-H⋯Cl, C-H⋯O hydrogen bonds, as well as C-H⋯π and parallel displaced π-π inter-actions, which lead to the formation of a three-dimensional network.