Conformational and substituent effects in the 19F spectra of C7–C10 straight-chain chlorofluoroalkanes

✍ Scribed by Wallace S. Brey; John West

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 168 KB
• Volume: 42
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.1449

✦ Synopsis

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 CF~2~ groups were analyzed in terms of molecular conformational effects. Spin–spin coupling patterns of CF~3~ groups were elucidated. Copyright © 2004 John Wiley & Sons, Ltd.