Peak Splitting (n+1 rule) High Resolution Proton NMR Spectroscopy (A-level Chemistry)

Outlining peak splitting (spin-spin coupling) and how it arrises with high resolution NMR spectroscopy. The n+1 rule is shown with examples (ethanal and ethanol) and the use of peak splitting to help identify and determine the arrangement of atoms within a given substance is explained, along with what is meant by adjacent, non-equivalent carbon atoms.

For AQA, OCR (A), Edexcel and CIE.

Data table NMR values used and shown are taken from AQA data booklet (7405).

Recap: 00:23
Adjacent, non-equivalent carbon atoms: 02:10
Spin-Spin Coupling: 04:04
Peak Splitting: 05:02
Example - Ethanal: 05:11
n+1 rule: 07:11
Example - Ethanol: 08:01
Summary: 10:31

NMR Examples in the video:
Ethanal: 05:11
Ethanol: 08:01

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