natural abundance 17O NMR
Analytical Chemistry and Spectroscopy
Wiley InterScience Backfile Collection 1832-2000
Chemistry and Pharmacology
Natural abundance 17O and 13C NMR spectra for eleven diarylketenes are reported. 17O shifts show invariance with para substitution and a shielding due to ortho substitution. A buttressing effect is observed for bis(2,3,4,5,6-pentamethylphenyl)ketene. A comparison between ketenes and isocyanates is made. The importance of cylindrical symmetry for half-height linewidths is discussed.
Type of Medium: