Plutonium oxybromide is an inorganic compound of plutonium, oxygen, and bromine with the chemical formula .
The compound was first observed by Davidson et al. in 1949 as a residue from the sublimation of small amounts of in a silica tube. Pure PuOBr can be obtained by treating plutonim(IV) hydroxide with moist hydrogen bromide at 750 ðC.
It is also produced in the reaction between plutonium dioxide and hydrogen bromide:
Plutonium oxybromide forms dark green crystals of tetragonal system, space group P4/nmm.
The compound reacts with dilute acids: