High-temperature and photochemical syntheses of C_(60) and C_(70) fullerene derivatives with linear perfluoroalkyl chains

摘要

New experimental results on perfluoroalkylation of C_(60) and C_(70) with the use of R_fI (R_f = CF3, C2F5, n-C3F7, n-C4F9, and n-C6F_(13)), along with a critical overview of the existing synthetic methods, are presented. For the selected new fullerene (R_f)_n compounds we report spectroscopic, electrochemical and structural data, including improved crystallographic data for the isomers of C_(70)(C2F5)_(10) and C_(60)(C2F5)_(10), and the first X-ray structural data for the dodecasubstituted perfluoethylated C_(70) fullerene, C_(70)(C2F5)_(12), which possesses unprecedented addition pattern.