How do we know the intensity ratio of multiplets in the #""^1H# #NMR# spectrum?
1 Answer
Jun 13, 2017
Pascal's triangle gives the relative intensity of multiplets.........
Explanation:
....the pattern of peak intensities measured by integration follows
A singlet has relative intensity
A doublet has relative intensity
A triplet has relative intensity
A quartet has relative intensity
And a quintet has relative intensity
Notice the relationship between the triangle and the relative intensities?
Even with the best, highest field spectrometers, quintets, and hextets, and higher multiplets may TEND to overlap and lose resolution. The inset shows the methine absorption for