The syntheqis and the analysis of the 90 MMz proton n.m.r. spectrum of cyclobutane-1,l-dithiol are reported. The chemical shifts and the coupling constants are presented and the latter are discussed in terms of the conformation of this molecule.Cette note traite de la synthkse et de I'analyse du spectre de RMN protonique B 90 MHz du cyclobutanedithiolL1,l. Les dtplacements chimiques et les constantes de couplage sont rapport& et la discussion de ces dernikres a permis de prkiser la conformation d e cette mol6cule.
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