2016-08-242016-08-242001-10-16http://hdl.handle.net/10919/72436A family of trimetallic nitride endohedral metallofullerenes and their preparation are described. The trimetallic nitride endohedral metallofullerenes have the general formula A.sub.3-n X.sub.n @C.sub.m 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, and m is between about 60 and about 200. Further, the A.sub.3-n X.sub.n @C.sub.68, A.sub.3-n X.sub.n @C.sub.78, A.sub.3-n X.sub.n @C.sub.80 families of endohedral fullerenes are described. The trimetallic nitride endohedral metallofullerenes are produced by charging a reactor with a cored graphite rod that has been filled with a metal oxide graphite mixture. The metal oxides correspond to the metals for A and X. The graphite rod is arc discharged in a helium and nitrogen atmosphere to produce the desired trimetallic nitride endohedral metallofullerenes.application/pdfen-USPatenthttp://pimg-fpiw.uspto.gov/fdd/60/037/063/0.pdf9458289423/445B505/460534/11534/15556/1556/28977/734977/736977/777977/835977/844977/846B01J27/22B01J27/24B82Y10/00B82Y30/00B82Y40/00C01B21/0627C01B31/0206C01B31/0213C01P2002/72C01P2002/77C01P2002/84C01P2002/85C01P2002/86C01P2002/89C07F5/00H01L51/0046Y10S977/734Y10S977/736Y10S977/777Y10S977/835Y10S977/844Y10S977/8466303760