Crystal structure, Hirshfeld surface analysis and energy framework study of 6-formyl-7,8,9,11-tetra-hydro-5<i>H</i>-pyrido[2,1-<i>b</i>]quinazolin-11-one.

ABSTRACT: At 100 K, the title compound, C₁₃H₁₂N₂O₂, crystallizes in the ortho-rhom-bic space group Pna2₁ with two very similar mol-ecules in the asymmetric unit. An intra-molecular N-H⋯O hydrogen bond leads to an S(6) graph-set motif in each of the mol-ecules. Inter-molecular π-π stacking and C=O⋯π inter-actions involving the aldehyde O atoms link mol-ecules 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%) inter-actions. Energy framework calculations reveal a significant contribution of dispersion energy. The crystal studied was refined as a two-component inversion twin.

SUBMITTER: Tojiboev A 

PROVIDER: S-EPMC7784053 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature