Graphite, and the Graphenes

The carbon atoms within each layer are bonded by delocalized pw electrons. The layers are held together only by London forces. (From Zumdahl, Chemistry 8th ed., Fig. 10.22, p. 458. Copyright 2010 Brooks/CoLe, a part of Cengage Learning, Inc. Reproduced by permission, www.cengage.com/ permissions.) 

C50 is an example of a graphene. It is essentially a one-atom-thick planar sheet of graphite curled up into a ball. It retains the delocalized nature of graphite, and both its interior and exterior surfaces are a sea of tt electrons. The structure of Cgg is a truncated icosahedron characterized by 60 vertices and 32 faces, 12 of which are 

In addition to atoms of inert gases, a variety of metal ions can be placed inside fullerenes of various sizes. These are officially called the endohedral metallofuller-enes and are of the general formula For example, when a graphite/La203 

Some representative futterenes C28, C32, C44, C o, 3rid Cyg. C o is known as buckminsterfuiierene, or buckyball. 

One face of the face-centered cubic unit cell of K3Cgo  

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B.37 Write a short paragraph highlighting the similarities and differences among the three carbon allotropes diamond, graphite, and the graphenes. 

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