13C-NMR studies of polyfluorinated hydrocarbons,carboxylic acid derivatives,alcohols and ethers |
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| Authors: | Konrad Von Werner Werk Gendorf Bernd Wrackmeyer |
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| Institution: | Hoechst AG, 6230 Frankfurt am Main F.R.G.;Institut für Anorganische Chemie der Universität München, Meiserstraβe 1, D-8000 Munich 2 F.R.G. |
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| Abstract: | δ13C values and coupling constants (1J(13C1H), 1J(13C13C), nJ(19F13C) are reported for 19 polyfluorinated organic compounds. It is shown that the shielding of carbon depends upon the number of fluorine atoms in α -position. If the RF-group is linked to a π -system hyperconjugative η-π interaction accounts for the δ13C data. The values 1J(13C1H) and 1J(13C13C) are in qualitative agreement with changes of the s-character of the respective bonds. |
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| Keywords: | Author to whom correspondence should be addressed |
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