Stable C92(26) and C92(38) as Well as Unstable C92(50) and C92(23) Isolated-Pentagon-Rule Isomers As Revealed by Chlorination of C92 Fullereneстатья
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Дата последнего поиска статьи во внешних источниках: 26 июня 2019 г.
Аннотация:High-temperature chlorination of C92 fractions, followed by single-crystal X-ray diffraction, resulted in the structure determination of C92(38)Cl18, C92(38)Cl22, C92(26)Cl24, nonclassical C90(NC)Cl22, and non-isolated-pentagon-rule C90Cl26. Two latter chloro derivatives were obtained by chlorination-promoted cage transformations via a single C2 loss from C92(50) and a combination of a C2 loss from C92(23) and three Stone−Wales rearrangements. The chlorination patterns are stabilized by the formation of isolated CC bonds and aromatic substructures on carbon cages. The presence of C92 isomer numbers 23, 26, and 50 in the arc-discharge fullerene soot has been confirmed for the first time.