Phosphorus heptabromide
Phosphorus heptabromide is an inorganic compound with the formula PBr7. It is one of the phosphorus bromides. At normal conditions, it forms red prismatic crystals. PBr7 can be prepared by the sublimation of a mixture of phosphorus pentabromide and bromine.
PBr5+Br2 → PBr7
The structure consists of a PBr4+ cation paired with a tribromide anion, and the tribromide is non-symmetric.
