Acta Crystallographica Section E: Crystallographic Communications | 卷:75 |
Crystal structure and optical properties of fused-ring chalcone (E)-3-(anthracen-9-yl)-1-(4-nitrophenyl)prop-2-en-1-one | |
Wan Mohd Khairul1  Ibrahim Abdul Razak2  Muhamad Fikri Zaini2  Suhana Arshad2  | |
[1] School of Fundamental Science, Universiti Malaysia Terengganu, 21030, Kuala Terengganu, Terengganu, Malaysia; | |
[2] X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia; | |
关键词: chalcone; crystal structure; DFT; Hirshfeld surface; UV–Vis; HOMO–LUMO; | |
DOI : 10.1107/S2056989019005243 | |
来源: DOAJ |
【 摘 要 】
The title compound, C23H15NO3, adopts an s-cis conformation with respect to the ethylene C=C and carbonyl C=O double bonds in the enone unit. The molecule is significantly twisted with a dihedral angle of 48.63 (14)° between the anthracene ring system and the benzene ring. In the crystal, molecules are linked into inversion dimers with an R22(10) graph-set motif via pairs of C—H...O hydrogen bonds. The intermolecular interactions were analysed and quantified by Hirshfeld surface analysis. The molecular structure was optimized and a small HOMO–LUMO energy gap of 2.55 eV was obtained using the DFT method at the B3LYP/6–311 G++(d,p) level of theory. This value is in close agreement with the experimental value of 2.52 eV obtained from the UV–vis analysis. The crystal used was a two-component merohedral twin with a refined ratio of 0.1996 (16):0.8004 (16).
【 授权许可】
Unknown