2016-08-242016-08-242008-04-15http://hdl.handle.net/10919/72580Trimetallic nitride endohedral metallofullerene derivatives and their preparation are described. The trimetallic nitride endohedral metallofullerene derivatives have the general formula A<sub>3-n</sub>X<sub>n</sub>@C<sub>m</sub>(R) where n ranges from 0 to 3, A and X may be trivalent metals and may be either rare earth metal or group IIIB metals, m is between about 60 and about 200, and R is preferably an organic group. Derivatives where the R group forms cyclized derivatives with the fullerene cage are also described.application/pdfen-USEndohedral metallofullerene derivativesPatenthttp://pimg-fpiw.uspto.gov/fdd/43/583/073/0.pdf10244747534/15556/1556/28C07F5/0037358343