|If a group of equivalent
protons A couple with two
or more other groups of protons, then
of the multiplet signal from the protons A
depends strongly on the ratio between the coupling constants JAM and JAX.
Therefore every case requires careful consideration. In this section
you will encounter some of the rules that govern these patterns.
- the number of the individual
lines that are resolved in the spectrum and
- the pattern of relative intensities
of the individual lines
Now apply your knowledge on the following simple problem:
| In a 1H-NMR spectrum you
observe a doublet (1 : 1) and a quartet (1 : 3 : 3 : 1) of lines.
Which of the following two molecules could give rise to such a
Click on the correct sulution!