Molybdenum monophosphide is a binary inorganic compound of molybdenum metal and phosphorus with the chemical formula .
Molybdenum monophosphide can be obtained from electrolysis of molten molybdenum hexametaphosphate:
It can also be prepared from heating of a mixture of molybdenum and metaphosphoric acid in a carbon crucible:
Other reactions are known too.
Molybdenum monophosphide forms black crystals of hexagonal crystal system with space group P6m2. It is insoluble in water. Molybdenum monophosphide decomposes when heated in air:
Molybdenum monophosphide can be used as a catalyst.