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An unusual example is the egg-shaped fullerene Tb 3 N@ C 84 , which violates the isolated pentagon rule. [ 59 ] Evidence for a meteor impact at the end of the Permian period was found by analyzing noble gases preserved by being trapped in fullerenes.
The example above would then be denoted M@C 60 if M were inside the carbon network. A more complex example is K 2 (K@C 59 B), which denotes "a 60-atom fullerene cage with one boron atom substituted for a carbon in the geodesic network, a single potassium trapped inside, and two potassium atoms adhering to the outside." [2]
Fullerene chemistry is a field of organic chemistry devoted to the chemical properties of fullerenes. [1] [2] [3] Research in this field is driven by the need to functionalize fullerenes and tune their properties. For example, fullerene is notoriously insoluble and adding a suitable group can enhance solubility. [1]
Pages in category "Fullerenes" The following 32 pages are in this category, out of 32 total. ... This page was last edited on 9 November 2020, at 06:19 (UTC).
C 70 fullerene is the fullerene molecule consisting of 70 carbon atoms. It is a cage-like fused-ring structure which resembles a rugby ball, made of 25 hexagons and 12 pentagons , with a carbon atom at the vertices of each polygon and a bond along each polygon edge.
For example, crystallization of C 60 from benzene solution yields triclinic crystals with the formula C 60 ·4C 6 H 6. Like other solvates, this one readily releases benzene to give the usual face-centred cubic C 60. Millimeter-sized crystals of C 60 and C 70 can be grown from solution both for solvates and for pure fullerenes. [37] [38]
Polyfullerene is a basic polymer of the C 60 monomer group, in which fullerene segments are connected via covalent bonds into a polymeric chain without side or bridging groups. They are called intrinsic polymeric fullerenes, or more often all C 60 polymers. Fullerene can be part of a polymer chain in many different ways.
A transition metal fullerene complex is a coordination complex wherein fullerene serves as a ligand. Fullerenes are typically spheroidal carbon compounds, the most prevalent being buckminsterfullerene, C 60. [2] One year after it was prepared in milligram quantities in 1990, [3] C 60 was shown to function as a ligand in the complex [Ph 3 P] 2 ...