Conformational and substituent effects in the 19F spectra of C7-C10 straight-chain chlorofluoroalkanes |
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| Authors: | Brey Wallace S West John |
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| Affiliation: | Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA. wsbrey@chem.ufl.edu |
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| Abstract: | One- and two-dimensional fluorine NMR spectra of straight-chain chlorofluoroalkanes having 7-10 carbons were obtained and interpreted. Spectral assignments were based primarily on indirect spin-spin correlations. A scale of chlorine substituent effects was developed. The effects of asymmetric CFCl centers on chemical-shift differences in nearby CF2 groups were analyzed in terms of molecular conformational effects. Spin-spin coupling patterns of CF3 groups were elucidated. |
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| Keywords: | NMR 19F NMR chlorofluoroalkanes substituent chemical shift effects spin–spin coupling conformation |
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