Niobium(V) bromide is the
inorganic compound
In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemist ...
with the formula Nb
2Br
10. Its name comes from the compound's
empirical formula, NbBr
5. It is a diamagnetic, orange solid that hydrolyses readily. The compound adopts an edge-shared bioctahedral structure, which means that two NbBr
5 units are joined by a pair of
bromide bridges. There is no bond between the Nb centres.
Niobium(V) chloride,
niobium(V) iodide,
tantalum(V) chloride,
tantalum(V) bromide, and
tantalum(V) iodide all share this structural motif.
Synthesis
Niobium(V) bromide can be prepared by the reaction of bromine with niobium metal at 230-250 °C in a
tube furnace. It can also be produced from the more accessible oxide by metathesis using
aluminium tribromide:
:Nb
2O
5 + 3.3AlBr
3 → 2NbBr
5 + 3.3Al
2O
3
A challenge with the latter method is the occurrence of NbOBr
3 as an impurity.
References
External links
Web Elements
Bromides
Metal halides
Niobium(V) compounds
{{inorganic-compound-stub