Elementary crystal cell or the whole crystal?

In summary, C60 is a single molecule and not considered a crystal. If condensed into a solid, a single C60 molecule would constitute a unit cell. It is considered the most symmetric molecule due to its point group containing the largest number of transformations.
  • #1
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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  • #2


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.
 

1. What is a crystal cell?

A crystal cell is the smallest repeating unit of a crystal structure. It is made up of a specific arrangement of atoms or molecules that is repeated throughout the entire crystal lattice.

2. How does the crystal cell contribute to the properties of a crystal?

The arrangement of atoms in the crystal cell determines the overall structure and physical properties of the crystal. This includes properties such as color, hardness, and melting point.

3. Can the crystal cell of a mineral vary?

Yes, the crystal cell of a mineral can vary depending on the conditions under which it formed. Factors such as temperature, pressure, and impurities can affect the size and arrangement of the crystal cell.

4. How are crystal cells studied and analyzed?

Crystal cells can be studied and analyzed using techniques such as X-ray crystallography, which allows scientists to determine the three-dimensional structure of the crystal cell. Other methods include electron microscopy and spectroscopy.

5. Are all crystals made up of the same type of crystal cell?

No, there are many different types of crystal cells that can make up a crystal. Some crystals have simple cell structures, while others may have more complex arrangements of atoms or molecules.

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