![]() Structure of Crystals Crystal Lattices Unit Cells From Unit Cell to Lattice From Lattice to Unit Cell Stoichiometry Packing & Geometry Simple Cubic Metals Close Packed Structures Body Centered Cubic Cesium Chloride SodiumĬhloride Rhenium Oxide Niobium Oxide Except as otherwise noted, all images, moviesīy Dr. Occupy the octahedral sites in the Na sublattice. 1 Triangles: 11.5k Vertices: 5.8k More model information Green Chlorine- White Sodium+ In this model, it is a representation of the structure of Sodium Chloride, an ionic network. The Na's occupy the octahedral sites in the Cl sublattice, and the Cl's We can look at the NaCl as made up of fcc / ccp lattices interpenetrating. Notice that there are 6 Cl surrounding the Na, and 6 Na around eachĬl. Please note the new version 2 of the lattice in which the spheres overlap, are more rounded and cut off at the bottom. It may not be obvious, the red Cl's represent a different fcc / ccp unitĬell. There may be more than one way to divide a lattice into unit cells. The Cl sublattice must also be fcc / ccp. Since the repetition patterns of Na and Cl are the same in the lattice, If we compare this with the fcc / ccp unitĬell, it is clear that they are identical. horizontal vertical If we take the NaCl unit cell and remove all the red Cl ions, we are Click on the images below to view the open structure rotating. In the present study, computational quantum chemistry is used to obtain lattice energies (LEs) for a range of ionic clusters with the NaCl structure. The same structure, but with the ions moved further apart allows ![]() ![]() However, the tightly-packed structures make it difficult to These stack so: Click on the images below to view the NaCl lattice structure Click on the unit cell above to view it rotating. Sodium chloride also crystallizes in a cubic lattice, but withĪ different unit cell. Sodium Chloride crystal lattice SODIUM CHLORIDE ![]()
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