Crystal structure and Hirshfeld surface analysis of (2Z)-4-oxo-4-{phenyl[(2E)-3-phenylprop-2-en-1-yl]-amino}but-2-enoic acid

In the crystal structure of the title compound, C19H17NO3, C—H O hydrogen bonds connect molecular pairs to produce dimers with an R22(16) ring motif. Additionally, C—H π interactions form ribbons along the [101] direction. Van der Waals interactions between the ribbons help to consolidate the molecular packing. Hirshfeld surface analysis shows that H H (45.5%), C H/H C (30.4%), and O H/H O (19.3%) interactions are the main contributors to the crystal packing. © 2026 International Union of Crystallography. All rights reserved.