Rotational Mobility of Sc2@C80CH2Ph Studied by EPR Spectroscopy

This work summarizes the mobility properties of the scandium dimetal encapsulated in a fullerene cage studied in detail in our previous works over a wide temperature range. It was shown that in the liquid phase, the lines of the electron paramagnetic resonance (EPR) spectrum differ in the amplitude and width, while low-temperature (20–120 K) pulse EPR measurements revealed that the phase relaxation depends on the state of the total spin of scandium nuclei. The observed properties are in good agreement with the mobility of both the fullerene and encapsulated dimetal inside.