5-Chloro-N-(2-hydroxy-5-methylphenyl)salicylaldimine.

The title compound, N-(5-chloro-2-oxidobenzylidene)-2-hydroxy-5-methylanilinium, C(14)H(12)ClNO(2), is a tridentate Schiff base with almost planar molecules. Each molecule contains a strong intramolecular N-H.O hydrogen bond [2.576 (2) A]. There is also an intermolecular O-H.O hydrogen bond [2.695 (2) A] linking neighbouring molecules into infinite chains along the [101] direction.