EPR spectroscopy can provide a wealth of information about catalytic systems, including:
G-values: The g-value is a dimensionless quantity that describes the magnetic moment of an electron in a magnetic field. Variations in g-values can indicate different coordination environments and oxidation states of the catalytic species. Hyperfine Splitting: Interaction between the unpaired electron and nearby nuclear spins results in hyperfine splitting, which can provide details about the local structure and the identity of atoms near the unpaired electron. Line Shape and Width: The shape and width of the EPR signal can reveal information about the dynamics and heterogeneity of the catalytic sites, as well as spin-spin interactions.
