Potassium perrhenate

Potassium perrhenate is an inorganic compound with the chemical formula KReO₄.

Preparation

Potassium perrhenate can be produced by the neutralization of potassium hydroxide and perrhenic acid.

$\mathrm{K}\mathrm{O}\mathrm{H}\mathrm{+}\mathrm{H}\mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}\mathrm{⟶}\mathrm{K}\mathrm{R}\mathrm{e}{\mathrm{O}}_{\mathrm{4}}\mathrm{+}{\mathrm{H}}_{\mathrm{2}}\mathrm{O}$

Properties

Potassium perrhenate is a white solid that is sparingly soluble in water and ethanol. It have a tetragonal crystal system with the space group I4₁/a (No. 88), and lattice constants a = 567.4 pm and c = 1266.8 pm. It is a strong oxidizer.