Write a short note on fullerene.

Explanation

Fullerenes :
`to` Fullerenes are one type of crystalline allotropes of carbon.
`to` These are formed by heating graphite in an electric arc in presence of inertgases such as Helium (or) Argon.
`to` These have smooth structure without dangling bonds. Hence Fullerenes are the only pure forms of carbon.
`C_(60)` molecule is called Buck minster fullerene and it.s shave was like a soccer ball. `to C_(60)` contains twenty 6. membered rings and twelve 5 - membered rings.
`to C_(60)` In `C_(60)` 6-membered rings can combine with 5 (or) 6. membered rings while 5. membered rings only combine with 6membered rings.
`to` In Fullerens each carbon undergoes `sp^(2)` hybridisation.
`to` Fullere has aromatic nature due to delocalisation of electrons in unhybrid p-orbitals.
`to` The C-C bond length in these compound lies between single and double bond lengths. `to` Spherical fullerene are also named as bucky balls. `to` The ball shaped molecule has 60 vertices.
The C-Cbond distances are 1.43`A^(@)` and 1.38`A^(@)` respectively.