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Is graphene aromatic?
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DOI：10.1007/s12274-011-0192-z.png)
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Abstract
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We analyze the chemical bonding in graphene using a fragmental approach, the adaptive natural density partitioning method, electron sharing indices, and nucleus-independent chemical shift indices. We prove that graphene is aromatic, but its aromaticity is different from the aromaticity in benzene, coronene, or circumcoronene. Aromaticity in graphene is local with two pi-electrons delocalized over every hexagon ring. We believe that the chemical bonding picture developed for graphene will be helpful for understanding chemical bonding in defects such as point defects, single-, double-, and multiple vacancies, carbon adatoms, foreign adatoms, substitutional impurities, and new materials that are derivatives of graphene.
Keywords:
Graphene
aromaticity
adaptive natural density partitioning (AdNDP)
chemical bonding
electronic aromaticity indices
multicenter indice (MCI)
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