Abstract
The asymmetric unit of the title compound, C19H12ClN3O, contains two molecules with similar conformations. The 14 non-H atoms comprising the 4H-chromeno[8,7-b]pyridine residue are essentially coplanar (r.m.s. deviations = 0.037 and 0.042 angstrom for the two molecules) and the main difference between them is seen in the twist about the bond linking the main residue to the attached chlorobenzene rings [dihedral angles = 79.01 (12) and 76.22 (11)degrees for the two molecules]. Zigzag supramolecular chains along the a-axis direction mediated by amino-pyridine N-H center dot center dot center dot N hydrogen bonds feature in the crystal packing; these are connected into a three-dimensional architecture by C-H center dot center dot center dot pi interactions and Cl center dot center dot center dot Cl contacts [Cl center dot center dot center dot Cl = 3.3896 (14) angstrom].