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2-Amino-4-(4-chlorophenyl)-4H-chromeno[8,7-b]pyridine-3-carbonitrile

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Author(s): Abd El-Galil E. Amr | Ahmed M. El-Agrody | Nermien M. Sabry | Seik Weng Ng | Edward R. T. Tiekink

Journal: Acta Crystallographica Section E
ISSN 1600-5368

Volume: 69;
Issue: 4;
Start page: o462;
Date: 2013;
Original page

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 Å 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...π interactions and Cl...Cl contacts [Cl...Cl = 3.3896 (14) Å].
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