Synthesis and molecular structures of heptafluoropropylated fullerenes: C70(n-C3F7)8, C70(n-C3F7)6O, and C70(C3F7)4

Ampoule reactions of C70 with n- and i-C3F7I were carried out at 250–310 °C. Two step HPLC separations allowed the isolation of several C70(n-C3F7)4–8 and C70(i-C3F7)4 compounds. Crystal and molecular structures of C70(n-C3F7)8-V, C70(n-C3F7)6O, C70(n-C3F7)4, and three isomers of C70(i-C3F7)4 have been determined by X-ray crystallography using synchrotron radiation. Molecular structures of the new compounds were compared with the known examples and discussed in terms of addition patterns and relative energies of their formation.

Graphical abstractAmpoule reactions of C70 with n- and i-C3F7I followed by HPLC separation resulted in the isolation and subsequent crystallographic characterization of C70(n-C3F7)8-V, C70(n-C3F7)6O, C70(n-C3F7)4, and three isomers of C70(i-C3F7)4. Molecular structures of the new compounds are discussed in terms of addition patterns and relative energies of their formation.Figure optionsDownload full-size imageDownload as PowerPoint slide