Crystal structure, Hirshfeld surface analysis and energy framework study of 6-formyl-7,8,9,11-tetrahydro-5<i>H</i>-pyrido[2,1-<i>b</i>]quinazolin-11-one
Annotatsiya
At 100 K, the title compound, C 13 H 12 N 2 O 2 , crystallizes in the orthorhombic space group Pna 2 1 with two very similar molecules in the asymmetric unit. An intramolecular N—H...O hydrogen bond leads to an S (6) graph-set motif in each of the molecules. Intermolecular π–π stacking and C=O...π interactions involving the aldehyde O atoms link molecules into stacks parallel to [100]. A Hirshfeld surface analysis indicates that the most important contributions to the crystal packing stem from H...H (49.4%) and H...O/O...H (21.5%) interactions. Energy framework calculations reveal a significant contribution of dispersion energy. The crystal studied was refined as a two-component inversion twin.