Oskolkov E, Kornilova T, Chavez PA, Tillotson JP, Timofeeva TV. Structural (at 100 K) and DFT studies of 2'-nitro-flavone.
Acta Crystallogr E Crystallogr Commun 2020;
76:1417-1420. [PMID:
32939292 PMCID:
PMC7472770 DOI:
10.1107/s2056989020010713]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 08/03/2020] [Indexed: 12/02/2022]
Abstract
The geometry of the title mol-ecule [systematic name: 2-(2-nitro-phen-yl)-4H-chromen-4-one], C15H9NO4, is determined by two dihedral angles formed by the mean plane of phenyl ring with the mean planes of chromone moiety and nitro group, being 50.73 (5) and 30.89 (7)°, respectively. The crystal packing is determined by π-π inter-actions and C-H⋯O contacts. The results of DFT calculations at the B3LYP/6-31G* level of theory provided an explanation of the unusually large dihedral angle between the chromone moiety and the phenyl group. The electrostatic potential map on the mol-ecular surface was calculated in order to determine the potential binding sites to receptors.
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