Lower fullerenes

The dodecahedral fullerene C20

Lower fullerenes are fullerene molecules consisting of fewer than 60 carbon atoms. They are cage-like fused-ring structures made of hexagons and pentagons, with a carbon atom at the vertices of each polygon and a bond along each polygon edge.

## Contents

* 1 Properties
* 2 See also
* 3 References
* 4 External links

## Properties

Any fullerene with hexagons, pentagons and no other polygons must exactly have 12 pentagons. These fullerenes obey the rule a = 2(n + 10), where n is the number of hexagons and a is the number of carbon atoms.[1]

## See also

* Errera graph, the dual graph of one of the C30 fullerenes

## References

1. ↑ [1]

## External links

* v
* t
* e

Allotropes of carbon

sp3 forms|

* Diamond (cubic)
* Lonsdaleite (hexagonal diamond)

sp2 forms|

* Graphite
* Graphene
* Fullerenes, including C60 (buckminsterfullerene), C70, Fullerene whiskers, Nanotubes, Nanobuds, Nanoscrolls)
* Glassy carbon

sp forms|

* Linear acetylenic carbon
* C18 (cyclo[18]carbon)

mixed sp3/sp2 forms|

* Amorphous carbon
* Carbon nanofoam
* Carbide-derived carbon
* Q-carbon

other forms|

* C1 (atomic carbon)
* C2 (diatomic carbon)
* C3 (tricarbon)

hypothetical forms|

* C3 (cyclopropatriene)
* C6 (benzotriyne)
* C6 (prismane C8)
* Chaoite
* Haeckelites
* Cubic carbon
* Metallic carbon
* Penta-graphene

related|

* Activated carbon
* Carbon black
* Charcoal
* Carbon fiber
* Aggregated diamond nanorod

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