Tojiboev A, Zhurakulov S, Vinogradova V, Englert U, Wang R. Crystal structure, Hirshfeld surface analysis and energy framework study of 6-formyl-7,8,9,11-tetra-hydro-5
H-pyrido[2,1-
b]quinazolin-11-one.
Acta Crystallogr E Crystallogr Commun 2021;
77:47-51. [PMID:
33520281 PMCID:
PMC7784053 DOI:
10.1107/s2056989020016059]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 12/09/2020] [Indexed: 11/13/2022]
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.
Collapse