ISSN:
0030-4921
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The selective population transfer method has been applied to the study of a secondary amide and of the corresponding iminium salt. Important signal-to-noise enhancements were accessible in both fully coupled and proton decoupled 15N and 13C spectra. Moreover, the resolving power of the method was exploited for the accurate determination of long range 15N1H coupling constants. Experiments in which the selective inversion of transitions pertaining to the 15N satellite spectrum of multiplets which themselves constitute the 13C satellite spectrum of the main proton resonances could be carried out. The influence of a change from the amide to the iminium structure on the magnitudes and the signs of various 15N1H and 15N13C coupling constants is discussed.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/mrc.1270170310
