Potassium Hexabromorhenate(IV)
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Potassium hexabromorhenate is an inorganic
chemical compound A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element ...
with the chemical formula .


Synthesis

Fusion of rhenium with potassium bromide in a bromine vapor current: :: The effect of
hydrobromic acid Hydrobromic acid is an aqueous solution of hydrogen bromide. It is a strong acid formed by dissolving the diatomic molecule hydrogen bromide (HBr) in water. "Constant boiling" hydrobromic acid is an aqueous solution that distills at and contains ...
on a mixture of
potassium bromide Potassium bromide ( K Br) is a salt, widely used as an anticonvulsant and a sedative in the late 19th and early 20th centuries, with over-the-counter use extending to 1975 in the US. Its action is due to the bromide ion ( sodium bromide is equa ...
with rhenium(VI) oxide: :: Reduction of potassium perrenate by
potassium iodide Potassium iodide is a chemical compound, medication, and dietary supplement. It is a medication used for treating hyperthyroidism, in radiation emergencies, and for protecting the thyroid gland when certain types of radiopharmaceuticals are u ...
in concentrated hydrobromic acid: ::


Chemical properties

Potassium hexabromorhenate dissolves in
hydrobromic acid Hydrobromic acid is an aqueous solution of hydrogen bromide. It is a strong acid formed by dissolving the diatomic molecule hydrogen bromide (HBr) in water. "Constant boiling" hydrobromic acid is an aqueous solution that distills at and contains ...
to create a red or deep yellow solution. Reacts with water. ::


Physical properties

The compound forms dark red crystals of
cubic system In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals. There are three main varieties of ...
, space group ''Fm''3''m''.


References

{{Rhenium compounds Potassium compounds Rhenium compounds Bromo complexes Bromometallates