Crystal structure, Hirshfeld surface analysis and DFT study of 6-bromo-3-(5-bromohexyl)-2-[4-(dimethylamino)phenyl]-3H-imidazo[4,5-b]pyridine

• Main Authors: Zainab Jabri, Nada Kheira Sebbar, Tuncer Hökelek, Joel T. Mague, Safia Sabir, Youssef Kandri Rodi, Khalid Misbahi
• Format: Article
• Language: English
• Published: International Union of Crystallography 2020-08-01
• Series: Acta Crystallographica Section E: Crystallographic Communications
• Subjects: crystal structure; c—h...π(ring) interaction; imidazopyridine; dft calculation; hirshfeld surface analysis
• Online Access: http://scripts.iucr.org/cgi-bin/paper?S2056989020008889
• ISSN: 2056-9890

In the title molecule, C20H24Br2N4, the imidazopyridine moiety is not planar as indicated by the dihedral angle of 2.0 (2)° between the constituent rings; the 4-dimethylaminophenyl ring is inclined to the mean plane of the imidazole ring by 27.4 (1)°. In the crystal, two sets of C—H...π(ring) interactions form stacks of molecules extending parallel to the a-axis direction. Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H...H (42.2%), H...C/C...H (23.1%) and H...Br/Br...H (22.3%) interactions. The optimized structure calculated using density functional theory (DFT) at the B3LYP/ 6–311 G(d,p) level is compared with the experimentally determined structure in the solid state. The calculated HOMO–LUMO energy gap is 2.3591 eV.