Potassium dimanganate(III)
Encyclopedia
Potassium dimanganate, K6Mn2O6, is a manganese(III) compound. Unlike lithium and sodium manganites, MMnO2, which are best described as mixed oxide
s, potassium dimanganite contains discrete Mn2O anions in the solid state. It rapidly hydrolyzes
in air.
K6Mn2O6 is prepared as ruby-red crystals by the reaction of excess potassium oxide
with manganese(II) oxide
in a sealed nickel
bomb at 610 °C for ten days. The Mn2O anion has an Al2Cl6-type structure.
Mixed oxide
In chemistry, a mixed oxide is a somewhat informal name for an oxide that contains more than one chemical element in its cation, or of a single element cation that has atoms in several states of oxidation....
s, potassium dimanganite contains discrete Mn2O anions in the solid state. It rapidly hydrolyzes
Hydrolysis
Hydrolysis is a chemical reaction during which molecules of water are split into hydrogen cations and hydroxide anions in the process of a chemical mechanism. It is the type of reaction that is used to break down certain polymers, especially those made by condensation polymerization...
in air.
K6Mn2O6 is prepared as ruby-red crystals by the reaction of excess potassium oxide
Potassium oxide
Potassium oxide is an ionic compound of potassium and oxygen. This pale yellow solid, the simplest oxide of potassium, is a rarely encountered, highly reactive compound...
with manganese(II) oxide
Manganese(II) oxide
Manganese oxide is the inorganic compound with formula MnO. MnO is a basic oxide that is insoluble in water but dissolves in acids, forming manganese salts.-Preparation and occurrence:...
in a sealed nickel
Nickel
Nickel is a chemical element with the chemical symbol Ni and atomic number 28. It is a silvery-white lustrous metal with a slight golden tinge. Nickel belongs to the transition metals and is hard and ductile...
bomb at 610 °C for ten days. The Mn2O anion has an Al2Cl6-type structure.