Molybdenum(IV) bromide
Molybdenum bromide, also known as molybdenum tetrabromide, is the inorganic compound with the formula MoBr4. It is a black solid. MoBr4 has been prepared by treatment of molybdenum(V) chloride with hydrogen bromide:
The reaction proceeds via the unstable molybdenum bromide, which releases bromine at room temperature.
Molybdenum bromide can also be prepared by oxidation of molybdenum bromide with bromine.