Elementary crystal cell or the whole crystal?

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SUMMARY

The discussion clarifies that fullerene C60 is not considered a crystal by itself, as it is a single molecule. However, when condensed into a solid, a single C60 molecule can serve as a unit cell. C60 is recognized for its perfect point symmetry, being the only member of its point group with 120 transformations, making it the most symmetric molecule known, aside from spherical noble gas atoms.

PREREQUISITES
  • Understanding of molecular structures and unit cells
  • Knowledge of point group symmetry in chemistry
  • Familiarity with the concept of fullerene and its properties
  • Basic principles of crystallography
NEXT STEPS
  • Research the properties and applications of fullerenes in materials science
  • Explore the concept of unit cells in crystallography
  • Study point group symmetry and its implications in molecular chemistry
  • Investigate the formation and characteristics of crystalline solids from molecular compounds
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Chemists, materials scientists, and students studying molecular symmetry and crystallography will benefit from this discussion.

Petar Mali
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Is fullerene [tex]C_{60}[/tex] elementary crystal cell or the whole crystal? I do not clearly understand it fom the context? Why is considered most perfect point symmetry form?
 
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C60 is a single molecule and as such, isn't considered a crystal in-itself any more than any other molecule. If you were to condense C60 molecules into a solid, then it's likely that a single C60-molecule would constitute a unit cell, yes.

Most "perfect" is subjective, but what it certainly is the only member of its point group, which in turn contains the biggest number of transformations (120) of any known molecule. (barring the trivial case of a spherical molecule such as a noble gas atom, which is infinitely symmetric) So you can certainly call it the 'most symmetric' molecule.
 

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