5-Diethylamino-2-[(E)-(4-methyl-3-nitrophenyl)iminomethyl]phenol: a redetermination

The title compound, C18H21N3O3, is a potential bidentate Schiff base ligand. The whole molecule is disordered with a refined site-occupancy ratio of 0.567 (4):0.433 (4) and not just one ethyl group as reported previously [Sarojini et al. (2007). Acta Cryst. E63, o4782–o4782]. Using the whole molecule disorder, R values are much smaller than those published. An intramolecular O—H...N hydrogen bond generates a six-membered ring, producing an S(6) ring motif. The dihedral angle between the mean plane of the two benzene rings (major component) is 9.0 (5)°. The crystal structure shows short C...C [3.189 (15)–3.298 (12) Å] and C...O [2.983 (5)–3.149 (13) Å] contacts. Intermolecular C—H...O interactions link neighbouring molecules into dimers with R22(18) motifs. In the crystal structure, these dimers are linked together by intermolecular C—H...O interactions into one-dimensional extended chains along the b axis. The crystal structure is further stabilized by intermolecular π–π stacking interactions [centroid–centroid distances = 3.458 (8)–3.691 (6) Å].

Abstract licence: CC BY

12 more references, whose wording the paper’s licence keeps private.

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.