3-Meth­oxy-5-(4-methyl­phenyl­diazenyl)­salicyl­aldehyde and 3-meth­oxy-5-(2-methyl­phenyl­diazenyl)­Salicyl­aldehyde

Abstract

The two title molecules, both C<inf>15</inf>H<inf>14</inf>N <inf>2</inf>O<inf>3</inf>, are roughly planar and display a trans conformation with respect to the -N=N-double bond, as found for other diazene derivatives. In both compounds, there are intramolecular O - H...O hydrogen bonds and the crystal packing is governed by weak intermolecular C-H...O hydrogen bonds and π stacking.