In the presence of 18-crown-6, potassium permanganate dissolves in benzene to give purple benzene, a useful reagent

Question:

In the presence of 18-crown-6, potassium permanganate dissolves in benzene to give "purple benzene," a useful reagent for oxidizing alkenes in an aprotic environment. Use a drawing of the complex to show why (KMnO4) dissolves in benzene and why the reactivity of the permanganate ion is enhanced.