Abstract
AbstractA new perfluoromethylated vinylogous amide, (Z)‐4,4,4‐trifluoro‐1‐(2‐hydroxyphenyl)‐3‐(2‐methoxyethylamino)‐2‐buten‐1‐one, is chosen as an example to investigate the bonding interactions in solid state. The Z, s‐cis form is the dominant conformation in both solution and solid state. Intramolecular hydrogen bonding determines this conformational preference in a nonpolar solvent (NMR spectra). Carbonyl and phenol groups are sensitive to the intra‐ and intermolecular contacts (vibrational spectra). The supramolecular assembly (X‐ray diffraction) is governed by NH⋯O and OH⋯O strong intermolecular hydrogen bonds giving rise to center‐symmetric and graph‐set motifs. The π‐stacking, F⋯H and F⋯F interactions are also discussed (Hirshfeld analysis).
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