Crystal structure of 5-(5-chloro-2-hydroxy­benzo­yl)-2-(2-methyl-1H-indol-3-yl)nicotino­nitrile

In the title compound, C(22)H(14)ClN(3)O(2), the indole unit is essentially coplanar, with a maximum deviation of 0.035 Å for the C atom bearing the methyl group. The central pyridine ring is inclined to the indole ring system by 43.7 (1)°. The dihedral angle between the phenyl ring and the indole ring system is 15.7 (2)°, while that between the phenyl ring and the central pyridine ring is 46.3 (1)°. The mol­ecular structure is stabilized by an intra­molecular O—H⋯O hydrogen bonding, forming an S(6) ring motif. In the crystal, mol­ecules are linked via pairs of N—H⋯N hydrogen bonds, forming inversion dimers with an R (2) (2)(16) ring motif. The crystal structure also features C—H⋯π and π–π inter­actions [centroid–centroid separation = 3.688 (1) Å].