The ¹⁹F nuclear magnetic resonance spectra of four halogenated ethanes, CF₂BrCFBrCl, CF₂ ICFCl₂, CF₂ClCFICl and CF₂BrCFBrSO₂F over a range of temperature (130–350°K) are described. Individual-rotamer and time-averaged chemical shifts and coupling constants are given. The possibility of theoretical interconversion of individual and averaged parameters is considered.