Permanganate is not classified as a coordination compound because it does not fit the definition based on its formation. Coordination compounds involve a central atom, typically a metal, bonded to ligands through coordinate covalent bonds, where a donor ligand transfers a lone electron pair to the central atom. In the case of permanganate, it is viewed as an inorganic anion rather than a product of a metal cation and ligands, as no chemist considers it as such. Thus, permanganate is simply recognized as an ordinary inorganic anion without requiring a specific designation.
