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Hi, I am new in NMR. Can someone please answer me why prefer N-NMR but not C and H -NMR?


asked Nov 14 '13 at 18:46

Rimond%20john's gravatar image

Rimond john

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Why do you have this impression? In fact, 13C and 1H -NMR are much more popular than 14N/15N-NMR. Because for 14N, it is rich in natural abundance but it is a quadrupolar nuclear, which means the peaks are broad and always of quadrupolar lineshape (solid); for 15N, it's natural abundance is very poor, which means you have to employ special pulse sequences and long machine time or use the expensive isotope enriched samples.


answered Nov 18 '13 at 07:50

de%20xiao's gravatar image

de xiao

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