The 13C N.M.R. spectra of some polyfluoroalicyclic compounds

Abstract Wide band 19 F decoupled 13 C nmr spectra of perfluorocyclopentane, -cyclopentene, -cyclohexane, -cyclohexene, cycloheptane and heptene, monahydrononafluroocyclopentane, monohydroundecafluorocyclohexane, monohydrotridecafluorocycloheptane and related compounds have been obtained. Some J CH and J CF values have been observed. Also measured were the 13 C spectra of perfluorocyclohexa-1,3- and -1,4-dienes perfluoro 1,4 dimethycyclohexane cis and trans perfluorodecalin, hexadecafluorobicyclo-[4,4,0]deca-1(6)-ene and 3H,4H-tetradecafluorobicyclo[4,4,0]deca-1(6)-ene. The use of 19 F decoupled 13 C nmr for structural investigation on highly fluorinated alicyclic compounds will be discussed and the influence of structure on the nmr parameters considered.