Tags: Chemical Compound, Chemical Substance.
Manganese(II) diselenide is the inorganic compound with the formula MnSe2. This rarely encountered solid is structurally similar to that of iron pyrite (FeS2). Analogous to the description of iron pyrite manganese diselenide is sometimes viewed as being composed of Mn2+ and Se22- ions although being a semiconductor MnSe2 is not appropriately described in formal oxidation states.