The asymmetric unit of the title compound, C19H 12ClN3O, 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 ? 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)? for the two molecules]. Zigzag supramolecular chains along the a-axis direction mediated by amino-pyridine N-H?N hydrogen bonds feature in the crystal packing; these are connected into a three-dimensional architecture by C-H?? interactions and Cl?Cl contacts [Cl?Cl = 3.3896 (14) ?].
Amr, A. E. G. E., El-Agrody, A. M., Sabry, N. M., Ng, S. W., & Tiekink, E. R. T. (2013). 2-Amino-4-(4-chlorophenyl)-4H-chromeno[8,7-b]pyridine-3-carbonitrile. Acta Crystallographica Section E: Structure Reports Online, 69(4). https://doi.org/10.1107/S1600536813005217