Molecular structure, DFT studies and Hirshfeld analysis of anthracenyl chalcone derivatives

Acta Crystallographica Section E: Crystallographic Communications

Ibrahim Abdul Razak¹  Dian Alwani Zainuri¹  Suhana Arshad¹ 

[1] X-ray Crystallography Unit, School of Physics, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia;

关键词: chalcone;    crystal Structure;    DFT;    molecular electrostatic potential;    Hirshfeld surface;   

DOI  :  10.1107/S2056989018006527

来源: DOAJ

【 摘 要 】

The molecular and crystal structure of two new chalcone derivatives, (E)-1-(anthracen-9-yl)-3-[4-(piperidin-1-yl)phenyl]prop-2-en-1-one, C28H25NO, (I), and (E)-1-(anthracen-9-yl)-3-[4-(diphenylamino)phenyl]prop-2-en-1-one, C35H25NO, (II), with the fused-ring system at the same position are described. In the crystals of (I) and (II), the molecules are linked via C—H...O hydrogen bonds into inversion dimers, forming R22(22) and R22(14) ring motifs, respectively. Weak intermolecular C—H...π interactions further help to stabilize the crystal structure, forming a two-dimensional architecture. The molecular structures are optimized using density functional theory (DFT) at B3LYP/6–311 G++(d,p) level and compared with the experimental results. The smallest HOMO–LUMO energy gaps of (I) (exp . 2.76 eV and DFT 3.40 eV) and (II) (exp . 2.70 eV and DFT 3.28 eV) indicates the suitability of these crystals in optoelectronic applications. All intermolecular contacts and weaker contributions involved in the supramolecular stabilization are investigated using Hirshfeld surface analysis. The molecular electrostatic potential (MEP) further identifies the positive, negative and neutral electrostatic potential regions of the molecules.

【 授权许可】

Unknown