Osuna S, Valencia R, Rodríguez‐Fortea A, Swart M, Solà M, Poblet JM. Full Exploration of the Diels–Alder Cycloaddition on Metallofullerenes M3N@C80 (M=Sc, Lu, Gd): The D5h versus Ih Isomer and the Influence of the Metal Cluster. Chemistry A European J. 2012 Jun 12;18(29):8944–56. doi: 10.1002/chem.201200940.
Full Exploration of the Diels–Alder Cycloaddition on Metallofullerenes M3N@C80 (M=Sc, Lu, Gd): The D5h versus Ih Isomer and the Influence of the Metal Cluster