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Synthesis, Isolation, and Addition Patterns of Trifluoromethylated <i>D</i><sub>5<i>h</i></sub> and <i>I</i><sub><i>h</i></sub> Isomers of Sc<sub>3</sub>N@C<sub>80</sub>: Sc<sub>3</sub>N@<i>D</i><sub>5<i>h</i></sub>-C<sub>80</sub>(CF<sub>3</sub>)<sub>18</sub> andSc<sub>3</sub>N@<i>I</i><sub><i>h</i

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Sc3N@D5h-C80 and Sc3N@Ih-C80 were trifluoromethylated with CF3I at 400 °C, affording mixtures of CF3 derivatives. After separation with HPLC, the first multi-CF3 derivative of Sc3N@D5h-C80, Sc3N@D5h-C80(CF3)18, and three new isomers of Sc3N@Ih-C80(CF3)14 were investigated by X-ray crystallography. The Sc3N@D5h-C80(CF3)18 molecule is characterized by a large number of double C−C bonds and benzenoid rings within the D5h-C80 cage and a fully different position of the Sc3N unit compared to that in the pristine Sc3N@D5h-C80. A detailed comparison of five Sc3N@Ih-C80(CF3)14 isomers reveals a strong influence of the exohedral additions on the behavior of the Sc3N cluster inside the Ih-C80 cage.

创建时间:
2011-04-18
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