ISSN:
0749-1581
Keywords:
NMR
;
natural abundance 17O NMR
;
diarylketenes
;
buttressing effect
;
cylindrical symmetry
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
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.
Additional Material:
2 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1260330809
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