Trifluoromethylated [60]Fullerenes: Synthesis and Characterization
Titel:
Trifluoromethylated [60]Fullerenes: Synthesis and Characterization
Auteur:
Goryunkov, Alexey A. Ioffe, Ilya N. Kuvychko, Igor V. Yankova, Tatyana S. Markov, Vitaly Y. Streletskii, Alexey A. Dick, Donald L. Sidorov, Lev N. Boltalina, Olga V. Strauss, Steven H.
Verschenen in:
Fullerenes, nanotubes & carbon nanostructures
Paginering:
Jaargang 12 (2005) nr. 1-2 pagina's 181-185
Jaar:
2005-01-02
Inhoud:
The high temperature reaction of C60 with silver(I) trifluoroacetate followed by 500°C sublimation and HPLC purification has led to the characterization of the trifluoromethyl-[60]fullerenes 1,4-C60(CF3)2, Cs-C60(CF3)4, C1-C60(CF3)4, and C1-C60(CF3)6 by EI-MS and 19F NMR. The compounds C1-C60(CF3)4 and C1-C60(CF3)6 were obtained with 90+% compositional purity. A sample of C60(CF3)2 also contained ca. 15-20% of a Cs-symmetry isomer of C60(CF3)4. The structural assignments are based on calculations at the AM1 and DFT levels of theory.