Crystal structure and Hirshfeld surface analyses, crystal voids, intermolecular interaction energies and energy frameworks of 3-benzyl-1-(3-bromo-propyl)-5,5-diphenylimidazolidine-2,4-dione

The title molecule, C₂₅H₂₃BrN₂O₂, adopts a cup shaped conformation with the distinctly ruffled imidazolidine ring as the base. In the crystal, weak C—H· · ·O hydrogen bonds and C—H· · ·π(ring) interactions form helical chains of molecules extending along the b-axis direction that are linked by additional weak C—H· · ·π(ring) interactions across inversion centres. The Hirshfeld surface analysis of the crystal structure indicates that the most important contributions for the crystal packing are from H· · ·H (51.0%), C· · ·H/H· · ·C (21.3%), Br· · ·H/ H· · ·Br (12.8%) and O· · ·H/H· · ·O (12.4%) interactions. The volume of the crystal voids and the percentage of free space were calculated to be 251.24 A^̊ 3 and 11.71%, respectively, showing that there is no large cavity in the crystal packing. Evaluation of the electrostatic, dispersion and total energy frameworks indicate that the stabilization is dominated by the dispersion energy.