RESUMEN
In the crystal of the title compound, C15H16O4, the mol-ecules are connected through C-Hâ¯O hydrogen bonds, generating [100] chains, which are crosslinked by weak π-π stacking inter-actions.
RESUMEN
In the title compound, C20H18O4, the dihedral angle between the 2H-chromen-2-one ring system and the phenyl ring is 89.12â (5)°. In the crystal, the mol-ecules are connected through C-Hâ¯O hydrogen bonds to generate [010] double chains that are reinforced by weak aromatic π-π stacking inter-actions. The unit-cell packing can be described as a tilted herringbone motif. The Hâ¯H, Hâ¯O/Oâ¯H, Hâ¯C/Câ¯H and Câ¯C contacts contribute 46.7, 24.2, 16.7 and 7.6%, respectively, to its Hirshfeld surface.
RESUMEN
In the title compound, C16H9ClO4 the dihedral angle between the coumarin ring system [maximum deviation = 0.023â (1)â Å] and the benzene ring is 73.95â (8)°. In the crystal, π-π inter-actions link the dimers into a three-dimensional framework. A quantum chemical calculation is in generally good agreement with the observed structure, although the calculated dihedral angle between the ring systems (85.7%) is somewhat larger than the observed value [73.95â (8)°]. Hirshfeld surface analysis has been used to confirm and qu-antify the supra-molecular inter-actions.
RESUMEN
In the title compound, C12H10O4, the dihedral angle between the coumarin ring system [maximum deviation = 0.033â (8)â Å] and the propionate side chain is 78.48â (8)°. In the crystal, weak C-Hâ¯O hydrogen bonds generate inversion dimers and and C-Hâ¯π and π-π inter-actions link the dimers into a three-dimensional network. A quantum chemical calculation is in good agreement with the observed structure.