Potassium hexabromorhenate is an inorganic chemical compound with the chemical formula K2ReBr6.[1][2]

Synthesis

Fusion of rhenium with potassium bromide in a bromine vapor current:

Re + 2KBr + 2Br2 → K2ReBr6

The effect of hydrobromic acid on a mixture of potassium bromide with rhenium(VI) oxide:[3]

ReO2 + 2KBr + 4HBr → K2ReBr6 + 2H2O

Reduction of potassium perrenate by potassium iodide in concentrated hydrobromic acid:[3]

2KReO4 + 6KI + 16HBr → 2K2ReBr6 + 4KBr + 3I2 + 8H2O

Chemical properties

Potassium hexabromorhenate dissolves in hydrobromic acid to create a red or deep yellow solution.[4]

Reacts with water.

K2ReBr6 + 2H2O → ReO2 + 2KBr + 4HBr

Physical properties

The compound forms dark red crystals of cubic system, space group Fm3m.[5]

References

  1. ^ Meloche, Villiers W.; Martin, Ronald (November 1956). "Synthesis of Potassium Hexachlororhenate and Potassium Hexabromorhenate". Journal of the American Chemical Society. 78 (22): 5955–5956. doi:10.1021/ja01603a067. ISSN 0002-7863. Retrieved 25 August 2024.
  2. ^ "Potassium Hexabromorhenate". American Elements. Retrieved 25 August 2024.
  3. ^ a b Watt, George W.; Thompson, Richard J.; Gibbons, Jean M. (1963). "Potassium Hexachlororhenate(IV) and Potassium Hexabromorhenate(IV)". Inorganic Syntheses. VII: 189–192. doi:10.1002/9780470132388.ch51. ISBN 978-0-470-13166-4. Retrieved 26 August 2024.
  4. ^ Kemmitt, R. D. W.; Peacock, R. D. (26 January 2016). The Chemistry of Manganese, Technetium and Rhenium: Pergamon Texts in Inorganic Chemistry. Elsevier. p. 974. ISBN 978-1-4831-8762-4. Retrieved 25 August 2024.
  5. ^ Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. 285. Retrieved 25 August 2024.
Allikas: https://en.wikipedia.org/wiki/Potassium_hexabromorhenate
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