Synthesis, crystal structure and Hirshfeld surface analysis of 2-oxo- N -(pyridin-4-yl)-2 H -chromene-3-carboxamide
Year: 2026
Type: article
Abstract: In the title compound, C 15 H 10 N 2 O 3 , the dihedral angle between the heterocyclic 2 H -chromene and the pyridine moieties is 2.09 (9)°. The molecule exhibits an almost planar conformation (r.m.s. deviation = 0.048 Å). The torsion angle associated with the amide linkage between the 2 H -chromene and pyridine moieties is −179.17 (18) ο and found to be a nti- periplanar. In the crystal, C—H...O hydrogen bonds form two sets of inversion dimers, generating R 2 2 (14) and R 2 2 (16) synthons that propagate along the [010] direction. The molecular packing in the crystal is further consolidated by C= O...π interactions and π–π stacking with centroid–centroid separations of 3.732 (2), 3.815 (2) and 3.947 (2) Å. The two-dimensional fingerprint plots indicate that the major contributions to the crystal packing arise from H...O/O...H (19.5%), H...C/C...H (14.1%), H...N/N...H (8.0%) and O...C/C...O (5.0%) interactions.
Institutions: University of Mysore, Tumkur University
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $500
OpenAlex ID: W7159924959