Crystal structure of 7,7′-[(pyridin-2-yl)methylene]bis(5-chloroquinolin-8-ol)

In the title compound, C24H15Cl2N3O2, one quinoline ring system is essentially planar and the other is slightly bent. An intra­molecular O—H⋯N hydrogen bond involving the hy­droxy group and a pyridine N atom forms an S(5) ring motif. In the crystal, two mol­ecules are associated into an inversion dimer with two R22(7) ring motifs through inter­molecular O—H⋯N and O—H⋯O hydrogen bonds. The dimers are further linked by an inter­molecular C—H⋯O hydrogen bond and four C—H⋯π inter­actions, forming a two-dimensional network parallel to (001).