Crystal structure, Hirshfeld surface analysis and DFT studies of 1,3-bis[2-methoxy-4-(prop-2-en-1-yl)phenoxy]propane

Abstract

The asymmetric unit of the title compound, C23H28O4, comprises two half-molecules, with the other half of each molecule being completed by the application of twofold rotation symmetry. The two completed molecules both have a V-shaped appearance but differ in their conformations. In the crystal, each independent molecule forms chains extending parallel to the b axis with its symmetry-related counterparts through C—H...π(ring) interactions. Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H...H (65.4%), H...C/C...H (21.8%) and H...O/O...H (12.3%) interactions. Optimized structures using density functional theory (DFT) at the B3LYP/6–311 G(d,p) level are compared with the experimentally determined molecular structures in the solid state. The HOMO–LUMO behaviour was elucidated to determine the energy gap.