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Capturing C84 isomers as chlorides and pentafluoroethyl derivatives: C84Cl22 and C84(C2F5)12
Maria A Lanskikh1, Nadezhda B Tamm, Lev N Sidorov
1Chemistry Department, Moscow State University, Leninskie Gory, 119991 Moscow, Russia.
Abstract:
A mixture of higher fullerenes C(76)-C(96) was pentafluoroethylated with C(2)F(5)I at 250 °C affording a mixture of C(2)F(5) derivatives. After separation with high-performance liquid chromatography, the second C(2)F(5) derivative of C(84)(16), C(84)(C(2)F(5))(12), was investigated by X-ray crystallography and compared with the known isomer in terms of addition patterns and formation energies. Chlorination of a C(84) isomeric mixture with VCl(4) at 350-400 °C resulted in the formation of C(84)Cl(22). X-ray diffraction study revealed the superposition of several C(84)Cl(22) molecules with different isomeric C(84) cages but the same chlorination pattern.
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