Name the crystal spinel from the image.

[Zelgad]

Hello, I appreciate your help in naming the structure of the molecular structure which image is attached. The answer should include the molecular formula and crystal structure characteristics.

Considering the distribution of atoms within the cell and that the caption below states the atomic components as A B and O, the image refers to a spinel structure. These type of crystals normally follow an AB2O4 composition. In the image, the A atoms are clearly following a FCC pattern, characteristic of the spinel, and the dashed lines between O atoms imply an octahedral arrangement within the cell.
Although it seems clear the type of arrangement, I cannot tell clearly the lattice characteristics since the FCC structure contains at least those other two which I'm not familiarized with.


Thanks for any clue here!

 

[nate808]

Based on the image and information provided, it appears that the molecular structure in question is a spinel crystal with the molecular formula AB2O4. The A and B atoms likely refer to different elements, while the O atoms represent oxygen.

The spinel structure is a type of crystal structure where the A atoms occupy the tetrahedral sites and the B atoms occupy the octahedral sites in a face-centered cubic (FCC) arrangement. This results in a 1:2 ratio of A to B atoms, as seen in the molecular formula.

In terms of lattice characteristics, the spinel crystal structure is known for its high symmetry and close-packing of atoms. It also exhibits a high degree of ionic character, with strong bonds between the A and B atoms and the oxygen atoms.

I hope this information helps in understanding the molecular structure in question. If you have any further questions, please don't hesitate to ask. Thank you for your interest in molecular structures and crystallography.