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Published on: September 5, 2014
Synthesis and molecular structure of pentafluoroethyl derivatives of C70: C70(C2F5)8 and C70(C2F5)10
Nadezhda B Tamm1, Ilya N Ioffe, Erhard Kemnitz
1Chemistry Department, Moscow State University, Moscow, 119991, Russia.
Abstract:
An isomeric mixture of C70(C2F5)10 has been synthesized by a high temperature reaction of C70 with C2F5I in a glass ampoule followed by HPLC separation. Partial thermal decomposition of C70(C2F5)10 has been performed to yield a complex mixture of lower derivatives. The molecular structures of nine isomers of C70(C2F5)8 isolated therefrom plus two new isomers of C70(C2F5)10 have been determined by means of single crystal X-ray diffraction. We discuss these newly obtained structures in terms of relative energies and possible formation pathways.
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