H–F Coupling constants and hindered internal rotation in NN-dimethyltrifluoroacetamide

• Main Author: Ng, Soon
• Format: Article
• Published: Royal Society of Chemistry 1971
• Subjects: Q Science (General); QD Chemistry
• Online Access: http://eprints.um.edu.my/25807/; https://doi.org/10.1039/J19710001586

The 1H n.m.r. spectra of NN-dimethyltrifluoroacetamide which have been recorded in various solvents, exhibit two H-F coupling constants which are believed to arise from different coupling mechanisms. The high-temperature rotationally averaged spectrum shows that the two H-F coupling constants have t...