Synthesis and structure of cycloperfluoroalkylated derivatives of C70, C70(C2F4) and C70(C4F8)n, n = 1–6

Abstract

The addition reactions of biradicals thermally generated from 1,2-C2F4I2 or 1,4-C4F8I2 were applied to functionalize C70 fullerene. The mixtures of C70(C2F4)m and C70(C4F8)n products were separated by HPLC resulting in several individual compounds. Molecular structures of new cycloperfluoroalkylated C70, C70(C2F4), C70(C4F8) (two isomers), C70(C4F8)2, C70(C4F8)4, C70(C4F8)5 (two isomers), and C70(C4F8)6 (two isomers) were determined by single crystal X-ray diffraction and discussed in terms of their addition patterns and relative energies of their formation.