What is the Correct Molecular Weight of Buckministerfullerene (C60)?

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Discussion Overview

The discussion revolves around the molecular weight of buckministerfullerene (C60) and whether it includes hydrogen atoms. Participants explore the composition of C60, the implications of its structure, and references to literature regarding its molecular weight.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Exploratory

Main Points Raised

  • One participant asserts that the molecular weight of C60 should account for hydrogen atoms, suggesting it is C60H60, while expressing frustration over incorrect listings in chemical catalogs.
  • Another participant states that fullerenes are purely carbon allotropes, claiming that C60 does not contain hydrogen atoms.
  • A participant mentions their professor's belief that C60 has hydrogen atoms, indicating a divergence in understanding.
  • One reply challenges the professor's assertion, asking for literature to support the claim that C60 contains hydrogens.
  • A participant references a Wikipedia definition of fullerenes, arguing that the professor may be mistaken about the chemical composition of C60.
  • Another participant questions how a compound could act as an acid without hydrogen atoms, implying a connection between hydrogen presence and acidity.
  • A participant cites the definition of Lewis acids, suggesting that acidity can be defined by electron transfer rather than hydrogen donation, which could relate to the discussion of C60.
  • One participant describes the structure of a "Buckyball," emphasizing that it consists solely of carbon atoms arranged in a specific bonding pattern without hydrogens.
  • A later reply mentions finding a paper that discusses the synthesis of C60H6, indicating that there may be variations of C60 that include hydrogen.

Areas of Agreement / Disagreement

Participants express disagreement regarding the presence of hydrogen atoms in C60, with some asserting it is purely carbon while others suggest the existence of hydrogenated forms. The discussion remains unresolved with competing views on the molecular composition.

Contextual Notes

There are references to literature and definitions that may not be universally accepted, and the discussion highlights differing interpretations of chemical structures and compositions.

scarecrow
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I have been searching all over for the CORRECT molecular weight of the fullerene C60, also called the buckministerfullerene. The weights I see listed do not account for the HYDROGENS! People assume it's just C60, when actually there are hydrogens sticking out from the cage.

I've searched in the Sigma-Aldrich chemical catalog, but to my surprise they have it listed wrong too (720.66 g/mol).

Does anyone know the correct molecular weight for the fullerene?:confused:
Edit: Nevermind. It's C60H60.
 
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fullerenes are allotropes of carbon. they are only composed of carbon atoms just like diamonds and graphite. in fact, the only thing known that will protonate C60 is carborane superacid H(CHB11Cl11 which is 1 million times stronger than sulfuric acid.
 
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My professor was quite adamant that there are hydrogens on the fullerene C60.
 
C60 is C60. If you could find a piece of literature to back up your claim, I would be surprised. Otherwise, I dare say your professor is wrong.
 
"The fullerenes are a recently-discovered family of carbon allotropes named after Buckminster Fuller. They are molecules composed entirely of carbon, in the form of a hollow sphere, ellipsoid, or tube." ~http://en.wikipedia.org/wiki/Fullerene

Sorry buddy, but either you misheard, your professor is onto a major fallacy in how the whole world does chemistry, or he is wrong.
 
How could it be an acid without hydrogen atoms?
 
http://en.wikipedia.org/wiki/Acid

Check out the definition of Lewis Acids...these focus on electron transfer as opposed to hydrogen donation. This can make compounds such as AlCl3 an acid.
 
There are NO hydrogens in a "Buckyball" - This structure can be reconciled with the tendency of carbon to form four bonds if one assumes that each C engaged in one double bond and two single bonds with the neighboring carbon atoms. Overall, this results in a structure that has patterns of alternating single and double bonds as one traces the C-C bonding framework. Each carbon lies at the vertex of fused 5- and 6-membered rings.
 
I guess my prof wanted us to do some digging, so I found a paper that describes the synthesis of C60H6.

Meier, M. S, Weedon, B. R., Spielmann, H. P. (1996) "Synthesis and Isolation of One Isomer of C60H6" J. Am. Chem. Soc. 118, 11682-11683.
 

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