Lower fullerenes

The icosahedral 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.

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]

References

External links

Media related to Fullerenes at Wikimedia Commons

Allotropes of carbon

sp³ forms	Diamond (cubic) Lonsdaleite (hexagonal diamond)

sp² forms	Graphite Graphene Fullerenes (Buckminsterfullerene, C₇₀, Higher fullerenes, Lower fullerenes, Nanotubes, Nanobuds) Glassy carbon

sp forms	Linear acetylenic carbon

mixed sp³/sp² forms	Amorphous carbon Carbon nanofoam Carbide-derived carbon Q-carbon

other forms	C 1 C 2 C 3

hypothetical forms	C 3 C 6 C 8 Chaoite Haeckelites Cubic carbon Metallic carbon Penta-graphene

related	Activated carbon Carbon black Charcoal Carbon fiber Aggregated diamond nanorod

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