Crystal structure of 7-{[bis(pyridin-2-ylmethyl)amino]methyl}-5-chloroquinolin-8-ol

In the title compound, C 22 H 19 ClN 4 O, the quinolinol moiety is almost planar [r.m.s. deviation = 0.012 Å]. There is an intramolecular O—H...N hydrogen bond involving the hydroxy group and a pyridine N atom forming an S (9) ring motif. The dihedral angles between the planes of the quinolinol moiety and the pyridine rings are 44.15 (9) and 36.85 (9)°. In the crystal, molecules are linked via C—H...O hydrogen bonds forming inversion dimers with an R 4 4 (10) ring motif. The dimers are linked by C—H...N hydrogen bonds, forming ribbons along [01-1]. The ribbons are linked by C—H...π and π–π interactions [inter-centroid distance = 3.7109 (11) Å], forming layers parallel to (01-1).