Crystal structure of (Z)-3-5-chloro-2-(prop-2-yn­yloxy)phen­yl-3-hy­droxy-1-4-(tri­fluoro­meth­yl)phen­yl­prop-2-en-1-one

摘要

The title compound, C19H12ClF3O3, obtained by the photochemical transformation of 2-[5-chloro-2-(prop-2-yn­yloxy)benzo­yl]-3-[4-(tri­fluoro­meth­yl)phen­yl]oxirane adopts a Z conformation with respect to the enolic C=C double bond. The dihedral angle between the benzene rings is 12.25 (16)° and an intra­molecular O—H⋯O hydrogen bond closes an S(6) ring. An intra­molecular C—H⋯O inter­action also leads to an S(6) ring. In the crystal, very weak C—H⋯O inter­actions and short Cl⋯Cl contacts [3.3221 (16) Å] are seen, as well as weak aromatic π–π stacking inter­actions [centroid–centroid separation = 3.879 (2) Å].