Aluminium bromide

Aluminium bromide is any chemical compound with the empirical formula AlBrx. The species called "aluminium tribromide," is the most common aluminium bromide. The species aluminium monobromide forms from the reaction of HBr with Al metal at high temperature. It disproportionates near room temperature:
6/n "[AlBr]n" → Al2Br6 + 4 Al
This reaction is reversed at temperatures higher than 1000°C.