AtBr
AtBr, formally named astatine bromide, is the interhalogen compound that would form from astatine and bromine in a 1:1 ratio. In theory, AtBr would be a diatomic molecule in the gas phase and would belong to the broader family of interhalogen compounds that includes species such as BrF and ICl. Because astatine is highly radioactive and extremely scarce, direct experimental data for AtBr are limited. Most information comes from quantum-chemical calculations and radiochemical experiments conducted with trace amounts of astatine.
Chemical and physical properties: The At–Br bond is predicted to be relatively weak, reflecting the large atomic
Synthesis and handling: Production is confined to specialized radiological laboratories. Possible routes include halogen exchange reactions
Applications: AtBr has limited practical use outside of fundamental radiochemistry and theoretical studies of heavy-element interhalogen