NMR spectra of disubstituted ethers with the formula (X-CH,-CH,),O, X = C1, Br, I, have been studied. Spectra of neat liquids at ambient temperature and spectra of these compounds in CS, at different temperatures have been analysed. It has been possible to assign the chemical shifts. In each case, the more populated rotamers have been determined. Additionally, for these three compounds dissolved in CS,, it is shown that the gauche form becomes more stable with cooling. The authors propose a procedure, using spectral decomposition, which allows the analysis of AABB' spectra almost degenerated in AzBz cases.RBsumB-Les spectres RMN d'ethers disubstitues de formule (X-CH,-CH,),O avec X = C1, Br,