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We have systematized possible ways of forming the isomers of midi-fullerenes,
namely C22, C24, C26 and C28.
There are three the most natural mechanisms of their obtaining:
embedding carbon dimers into initial fullerenes; fusion of carbon cupolas having the same
symmetry; fusion of fullerenes having compatible symmetry. The minimum energy fullerenes
are obtained through the use of the first mechanism. It is worth noting that these fullerenes
conserve the topological three-fold symmetry. At the same time the graph representation
shows the change of symmetry from three-fold symmetry to six-fold one. Combined with the
graph analysis, this geometric modeling allows obtain a clear knowledge of the structure of
the fullerenes formed.
Keywords: atomic isomer, electronic isomer, energy, fullerene, fusion reaction, graph representation, growth, periodic system |
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