All the carbon atom of fullerenes (C60) are equivalent but all C-C bond are not equivalent why ?

In the fullerenes (C60) structure C-C bonds of two different bond length occur at the fusion of two six membered rings the bond length is  C-C = 135.5 pm and at the fusion of  five and six membered rings C-C bond length is 146.7 pm.

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STRUCTURE OF FULLERENCES :

Related-topics: 

STRUCTURE OF GRAPHITE: 

STRUCTURE OF DIAMOND :

Silicon Oxide : Silica (SiO2):

What are structural information of Dimomd ?

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