Trifluoromethyl Derivatives of Elusive Fullerene C98статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 24 января 2020 г.
Аннотация:Data concerning the isomeric composition of C98 and the chemistry of C98 derivatives are scarce due to very low abundance of C98 in the fullerene soot. Trifluoromethylation of C98-containing mixtures followed by HPLC separation of CF3 derivatives and single crystal X-ray diffraction study resulted in structural characterization of four compounds C98(248)(CF3)18/20, C98(116)(CF3)18, and C98(120)(CF3)20. So far these compounds represent the largest fullerenes isolated as CF3 derivatives with experimentally determined molecular structures. The addition patterns of C98(CF3)18/20 are discussed in detail revealing the stabilizing factors such as isolated double C=C bonds and benzenoid rings on C98 fullerene cages. A detailed comparison with the addition patterns of the known C98Cln allowed us to contribute to the better understanding the chemistry of elusive C98 fullerene.