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.[2]

Phosphorus heptabromide
Names
Other names
Tetrabromophosphonium tribromide
Perbromophosphonium tribromide
Phosphorus heptabromide
Identifiers
3D model (JSmol)
Properties
Br7P
Molar mass 590.302 g·mol−1
Structure[1]
orthorhombic
Pnma, No. 64
a = 9.35 Å, b = 7.94 Å, c = 14.69 Å
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

PBr5+Br2 → PBr7

The structure consists of a PBr4+ cation paired with a tribromide (Br3) anion, and the tribromide is non-symmetric.[1]

See also

References

  1. Breneman, G. L.; Willett, R. D. (1967). "The crystal structure of phosphorus heptabromide, PBr7". Acta Crystallographica. 23 (3): 467–471. doi:10.1107/S0365110X67002981.
  2. T. E. (Thomas Edward) Thorpe. A dictionary of applied chemistry (Volume 4)


This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.