Barium manganate is a chemical compound with the chemical formula BaMnO4. It is composed of barium (Ba) cations and manganate (MnO4^2-) anions. However, it’s important to note that barium manganate is not a commonly known or well-studied compound, and its properties and applications might not be as extensively documented as those of more commonly encountered compounds.

Manganates, in general, are known for their interesting oxidation states of manganese and unique chemical properties. However, due to the relative scarcity of information about barium manganate, it is difficult to provide specific details regarding its properties and uses.

As with any less-commonly studied or used compound, barium manganate should be handled with caution. It is always important to work with unfamiliar chemicals in a controlled laboratory setting with proper safety precautions and equipment to prevent accidents and ensure the safety of researchers and lab personnel.

If you are specifically interested in barium manganate for research or experimental purposes, it is best to consult specialized scientific literature or seek advice from experts in the field of inorganic chemistry or materials science.