Neodymium(III) bromide
Neodymium(III) bromide is an inorganic chemical compound with the formula NdBr3. It is a salt formed from the rare-earth metal neodymium and bromine. It exists as a hygroscopic solid, typically with a violet or purple color, and is soluble in water.
Properties and Production:
Neodymium(III) bromide can be synthesized by reacting neodymium(III) oxide (Nd2O3) with hydrobromic acid (HBr), followed by dehydration of the resulting neodymium bromide hydrate. Alternatively, it can be produced by directly reacting neodymium metal with bromine.
The anhydrous form is typically obtained by heating the hydrate under vacuum to remove water molecules. However, complete dehydration can be challenging, often leading to the formation of oxybromides as impurities.
Neodymium(III) bromide exhibits typical properties of rare-earth halides, including paramagnetism due to the unpaired electrons in the neodymium ion.
Uses:
Neodymium(III) bromide is primarily used in research and development. It has applications in the synthesis of other neodymium compounds and as a component in certain types of lasers. It also finds use in some specialized applications related to magneto-optical materials.
Safety:
Like other neodymium salts, neodymium(III) bromide is considered to have low toxicity. However, it should be handled with care, avoiding inhalation or ingestion. Eye and skin contact should also be avoided. Appropriate protective equipment, such as gloves and eye protection, is recommended when handling the compound.