2-Oxochromen-4-yl 4-(dimethyl-amino)-benzoate

Abstract

In the title mol-ecule, C(18)H(15)NO(4), the benzoate ring is oriented at a dihedral angle of 43.43 (6)° with respect to the planar [maximum deviation = 0.038 (2) Å] chromene ring. The crystal structure features R(2) (2)(12) centrosymetric dimers formed via C-H⋯O inter-actions and these dimeric aggregates are connected by C-H⋯π inter-actions.

Fig. 1.

The molecular structure of (I) showing the atomic labeling scheme, with displacement ellipsoids drawn at the 50% probability level. H atoms are shown as spheres of arbitrary radius.

Fig. 2.

Crystal packing, viewed in projection down the b axis, showing parallel centrosymmetric dimers. Dashed lines indicate hydrogen bonds. H atoms not involved in hydrogen bonds have been omitted for clarity.

Fig. 3.

Crystal packing, showing C—H···π stacking interactions. The green dots are centroids of rings. H atoms not involved in C—H···π interactions have been omitted for clarity.