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This tag should be applied to questions about the various allotropes of carbon and their physical or chemical properties. Most important modifications are diamond, graphite, fullerenes, graphene and nanotubes.
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Total number of carbon atoms in buckminsterfullerene
From what I read, buckminsterfullerene is composed of 60 carbon atoms, $\ce{C_{60}}$ and it is made up of 20 hexagons and 12 pentagons. So, I decided to do a back of the hand calculation with the know …
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Chemical shifts seen during XPS
When in X-ray Photoelectron spectroscopy, an Si $2p$ peak is defined or a C $1s$ peak is defined at a certain binding energy, how is it done? I presume it is done from mono-crystalline Si but even in …
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sp2 hybridized carbon versus sp3 hybridized silicon
Carbon's most commonly found allotrope is graphite/soot/fullerene/carbon nanotubes which are all $\mathrm{sp^2}$ hybridized forms of it, while silicon being its first periodic twin is mostly found in …
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Band gap of fullerenes
From what I have read about fullerenes, the lower fullerenes like $\ce{C60}$ or $\ce{C70}$ have higher bandgaps around 3.5 eV or such, while the higher fullerenes have much smaller bandgaps of the ord …