2-Amino-4-(2-chlorophenyl)-5,10-dioxo-5,10-dihydro-4H-benzo[g] chromene-3-carbonitrile

Abstract

In the mol-ecule of the title compound, C20H11ClN2O3, the pyran ring adopts a flattened-boat conformation. In the crystal structure, inter-molecular N - H⋯N and N - H⋯O hydrogen bonds generate edge-fused R 2 2(12) and R 2 2(14) ring motifs; the hydrogen-bonded motifs are linked to each other, forming a three-dimensional network. A π-π contact [centroid-to-centroid distance = 3.879 (3) Å] between the chloro-phenyl rings may further stabilize the structure.