Abstract

The equimolar reaction between 4-(di-methyl-amino)-benzaldehyde and 2-acetyl-thio-phene in basic ethano-lic solution yields the title compound, C15H15NOS, whose mol-ecular structure matches the asymmetric unit. The mol-ecule is not planar, the dihedral angle between the aromatic and the thio-phene rings being 11.4 (2)°. In the crystal, mol-ecules are linked by C-H⋯O and weak C-H⋯S inter-actions along [100], forming R22 (8) rings, and by weak C-H⋯O inter-actions along [010], forming chains with a C(6) graph-set motif. In addition, mol-ecules are connected into centrosymmetric dimers by weak C-H⋯π inter-actions, as indicated by the Hirshfeld surface analysis. The most important contributions for the crystal structure are the H⋯H (46.50%) and H⋯C (23.40%) inter-actions. The crystal packing resembles a herringbone arrangement when viewed along [100]. A mol-ecular docking calculation of the title compound with the neuraminidase enzyme was carried out. The enzyme shows (ASN263)N-H⋯O, (PRO245)C-H⋯Cg(thio-phene ring) and (AGR287)C-H⋯N inter-molecular inter-actions with the title compound. The crystal structure was refined as a two-component twin with a fractional contribution to the minor domain of 0.0181 (8).

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