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The mol-ecular conformation of the title compound, C 17 H 14 ClN 3 O 4 , is stabilized by an intra-molecular C-H⋯O contact, forming an S (6) ring motif. In the crystal, the mol-ecules are connected by N-H⋯O hydrogen-bond pairs along the b- axis direction as dimers with R  2  2 (8) and R  2  2 (14) ring motifs and as ribbons formed by inter-molecular C-H⋯N hydrogen bonds. There are weak van der Waals inter-actions between the ribbons. The most important contributions to the surface contacts are from H⋯H (34.9%), O⋯H/H⋯O (19.2%), C⋯H/H⋯C (11.9%), Cl⋯H/H⋯Cl (10.7%) and N⋯H/H⋯N (10.4%) inter-actions, as concluded from a Hirshfeld surface analysis.

acta crystallographica section e crystallographic communications

Crystal structure and Hirshfeld surface analysis of ethyl 6′-amino-2′-(chloromethyl)-5′-cyano-2-oxo-1,2-dihydrospiro[indoline-3,4′-pyran]-3′-carboxylate