One of the most common applications of 13C in catalysis is in NMR (Nuclear Magnetic Resonance) spectroscopy. 13C-NMR provides detailed information about the carbon skeleton of organic molecules. Since 13C has a nuclear spin (I = 1/2), it is NMR-active and can be detected using NMR spectroscopy. This allows for the observation of carbon environments in catalytic reactions, helping to identify intermediates and products.
