Manganate
Manganates or manganates(VI) are chemical compounds of manganese. They are salts with the doubly negatively charged MnO42- anion, derived from manganic acid (H2MnO4), which is unstable in free form. The manganate ions are stable and paramagnetic only in strongly basic solution. Solutions with manganate ions appear green.
The technical production takes place among other things from manganese dioxide (MnO2) in the strongly alkaline under air supply (from oxidation stage IV to VI):
A laboratory preparation succeeds by oxidation melting of Mn(II):
Green color of the manganate ion
Manganate ion
Connections
- Sodium manganate
- Potassium manganate
- Barium manganate
