Manganate
Gallery
In , a manganate is any negatively charged with as the central atom. However, the name is usually used to refer to the tetraoxidomanganate(2−) anion, MnO, also known as manganate(VI) because it contains manganese in the +6 . Manganates are the only known manganese(VI) compounds.
Other manganates include or manganate(V), , or manganate(VII), , and the or dimanganate(III) .
Potassium manganate is prepared industrially, as an intermediate to , by dissolving in molten with or air as the .
Manganates, particularly the insoluble , BaMnO, have been used as in : they will oxidize primary to and then to , and secondary alcohols to . Barium manganate has also been used to oxidize to .
Manganate is formally the of hypothetical , which cannot be formed because of its rapid disproportionation. However, its second has been estimated by techniques:
