Selective formation of a symmetric Sc3N@C78 bisadduct: adduct docking controlled by an internal trimetallic nitride cluster.
Cai T, Xu L, Shu C, Champion HA, Reid JE, Anklin C, Anderson MR, Gibson HW, Dorn HC, J Am Chem Soc, 2008 Feb 20 - link

Sc3N@C78: encapsulated cluster regiocontrol of adduct docking on an ellipsoidal metallofullerene sphere.
Cai T, Xu L, Gibson HW, Dorn HC, Chancellor CJ, Olmstead MM, Balch AL, J Am Chem Soc, 2007 Sep 5 - link