4-[(3-Chlorophenyl)diazenyl]-2-{[tris(hydroxymethyl)methyl]aminomethylene} cyclohexa-3,5-dien-1(2H)-one

Abstract

The title compound, C17H18ClN3O4, adopts the keto - amine tautomeric form and displays an intramolecular N-H...O hydrogen bond [N...O = 2.639 (2) Angstrom]. The configuration around the azo N=N double bond is trans, and the dihedral angle between the planes of the two aromatic rings is 20.5 ( 2) degrees. The molecules are linked by O-H...O hydrogen bonds to form a three-dimensional network.