because the molecule is actually spinning and tumbling inside its iodine cage. This "dynamic disorder" is thought to be the secret reason why these materials can transport electricity so easily despite having many internal defects. 4. Why Researchers Hunt for This File When a scientist downloads a FAPbI CIF file from a database like the Crystallography Open Database (COD) , they aren't just looking at dots; they are: Simulating the Future:
The dimensions of the unit cell (typically around 6.36 Å for the cubic phase). fapbi3 cif file