FORMATION OF METALLOFULLERENES WITH HIGHER GROUP ELEMENTS

Abstract The formation of metallofullerenes was examined for 23 elements, and some experimental evidence was obtained for metallofullerenes with group-4, Zr and Hf, and group-5, Nb, elements. Relative yields of the metallofullerenes eluted at the retention time around those for M@C 82 (M=group-2 and -3 elements) were found to decrease exponentially as the group number increased. The yields for Fe and Co, namely group-8 and -9 elements, were estimated to be less than one hundredth of that for M@C 82 (M=lanthanoid)