Chloro Derivatives of Azafullerenes C59NCl5 and Non-Classical C97NCl21статья
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Дата последнего поиска статьи во внешних источниках: 11 марта 2017 г.
Аннотация:High-temperature chlorination of HPLC fullerene
fractions containing mainly C92/C94 and C102/C104 resulted
in the isolation and X-ray structural characterization of
chloro derivatives of azafullerenes, C59NCl5 and C97NCl21. It
was assumed that formation of azafullerenes in the arcdischarge
synthesis of fullerenes occurred due to air leakage
into the reactor. The molecule of C59NCl5 contains an
isolated aromatic pyrrole ring on the fullerene cage and
possesses C5v symmetrical shape typical of other known
C59NR5 derivatives. The molecule of non-classical (NC)
C97N(NC)Cl21 contains an NC6 heptagon on the azafullerene
cage that assumes its formation by a C2 loss from C99N in
the course of chlorination. The chlorination pattern is
characterized by the presence of stabilizing isolated aromatic
systems and isolated double C=C bonds on the
C97N(NC) azafullerene cage.