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Pentagon-adjacency rule

A more specific form of the minimal adjacency rule has been suggested. To each fullerene isomer it is possible to attach apentagon neighbor index signature ft where Pi (k = 0,..., 5) is the number of pentagons with k pentagonal neighbors. Trivially,... [Pg.256]

Figure 7.10 is an illustration of paths of SWR and fragmentation of Ceo. The most stable structure of Ceo satisfies the isolated pentagon rule (IPR), where the pentagons are not adjacent to each other, surrounded by hexagons. The structure A in Fig. 7.10 represents an IPR structure. The path from A to C via B shown in Fig. 7.10 is an... [Pg.167]

The resonance destabilization that results from the adjacent pentagons (8tt electrons which do not satisfy the Hiickel rule) and reduction of the r-orbital overlap due to the cage curvature explain the lower stability of those so-called non-IPR fullerenes [9-11]. [Pg.460]

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Adjacency

Adjacent

Pentagon

Pentagonal

The Minimum Pentagon-Adjacency Rule

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