Material structure of Barium Fluoride BaF2 products
Barium Fluoride BaF2 products are alkaline earth fluoride crystals, colorless and transparent, belonging to the cubic crystal system, with a face-centered cubic structure. It is a coordination crystal. Each barium atom is surrounded by eight fluorine ions, forming an anionic cubic structure unit, and F is surrounded by four Ba to form a tetrahedral structure unit. accumulation.
Solid Barium Fluoride BaF2 products are fluorite crystal structure, cubic system. Under high pressure, it transforms into lead chloride structure.
In the gaseous state, it exists in the form of BaF2 molecules, and the F-Ba-F bond angle is about 108°, which contradicts the prediction of the mutual repulsion theory of valence shell electrons. Ab initio calculation results show that this is the result of the participation of d orbitals of barium atoms. There are also theories that this is caused by the polarization of the electrons in the inner layer of barium, which produces a tetrahedral charge distribution around the barium atoms and interacts with the Ba-F bond.