Diamond and crystals with diamond structure

Diamond structure (Diamond? structure?) is the structure of diamond crystal; having this type of crystal structure is called diamond structure. Diamond is a crystalline form of carbon atoms. The carbon atoms are all bonded with *** valence bonds. The basic rule of atomic arrangement is that each carbon atom is surrounded by 4 carbon atoms distributed in a regular tetrahedron; this structure can be seen as two sets of face-centered structures. It is composed of cubic Bravais lattice. The nesting method is to move 1/4 distance along the diagonal direction of the unit cell [crystallographic unit cell] cube; it can also be regarded as a dense structure of many (111) atoms. The planes are stacked along the [111] direction and according to the ABCABCABC... rule; each unit cell contains 8 atoms, and each unit cell contains 2 non-equivalent atoms. It is a kind of Complex lattice. Important semiconductors Si and Ge have diamond-type crystal structures. The inverse lattice of the diamond lattice is the body-centered cubic lattice. Therefore, the Brillouin zone of electrons in diamond-type crystals such as Si and Ge is also the W-S unit cell in the body-centered cubic lattice, and its shape is a tangential hexahedron (i.e., a 14-hedron).

I just graduated from high school, so I still have an impression of the question you asked!! The answer I found is not very specific, so I will summarize it myself!!! The picture below is the ball and stick model of diamond, in which The ball represents the carbon atom, and the stick represents the valent bond, with a bond angle of 109.5°, forming an atomic crystal. As for the others, I don’t think they are very important, and I have forgotten some. I can take out my notebook and tell you! You can add me on QQ: 670121754. I majored in chemistry in college. Maybe I can help you!! Substances with diamond structure also include silicon crystals and silicon dioxide crystals. They are all atomic crystals, this is the key point!! You must remember!!! That’s all atomic crystals, and silicon carbide!! Don’t forget it! You will be honest about this when the time comes. If you don’t understand, you can ask the teacher for such a ball. Study the stick model carefully, it will be helpful!!