87
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Answers:
| Molecule |
coupling A/X |
multiplets A/X |
JAX in
Hz |
| A) |
C(CH3)2/CH |
doublet/heptet |
5.5 ... 7 |
| B) |
CH2/CH3 |
quartet/triplet |
6.5 ... 7.5 |
If you had problems with deciding which proton groups show spin-spin
coupling, you might want to check page
90 for some additional explanations
If you recall the examples so far where spin-spin coupling occured
between groups of protons, then you should have no difficulties in
answering the following question:
Under what conditions would you expect to see no
coupling between two given groups of protons in a molecule?
Compare your answer to ours on page 89!
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