Is there any bona fide example of O–H⋯F–C bond in solution? The cases of HOC(CF3)2(4-X-2,6-C6H2(CF3)2) (X = Si(i-Pr)3, CF3)

Abstract

The reinvestigation of the title compounds, which are the only examples reported to show experimentally (by NMR) O–H⋯F–C bonds in solution proves that the NMR data were misinterpreted and the restrictions to rotation of one CF₃ group are due to crowding, not to intramolecular O–H⋯F–C bond.