What 2 pieces of information does a carbon-13 NMR spectrum reveal about the carbon environments in an organic compound?

A carbon-13 NMR spectrum reveals:

  1. The number of different carbon environments present.
  2. The types of carbon environment present.

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How can you work out the number of carbon environments in a molecule from its 13C NMR spectrum?

The number of peaks in the 13C NMR spectrum corresponds to the number of unique carbon environments in the molecule.

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How can you work out the types of carbon environment present in a molecule from its 13C NMR spectrum?

The chemical shift range that a peak appears in indicates the type of carbon environment. Different ranges correspond to different functional groups.

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