Molybdenum(IV) bromide

Molybdenum(IV) bromide
Names
	Other names molybdenum tetrabromide
Identifiers
CAS Number	13520-59-7;
3D model (JSmol)	Interactive image;
ChemSpider	9103085;
PubChem CID	dihydrate: 139031385;
CompTox Dashboard (EPA)	DTXSID00448625 ;
	SMILES [Br-].[Br-].[Br-].[Br-].[Mo+4];
Properties
Chemical formula	Br4Mo
Molar mass	415.57 g·mol−1
Appearance	black solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Molybdenum(IV) bromide, also known as molybdenum tetrabromide, is the inorganic compound with the formula MoBr₄. It is a black solid. MoBr₄ has been prepared by treatment of molybdenum(V) chloride with hydrogen bromide:

2 MoCl₅ + 10 HBr → 2 MoBr₄ + 10 HCl + Br₂

The reaction proceeds via the unstable molybdenum(V) bromide, which releases bromine at room temperature.

Molybdenum(IV) bromide can also be prepared by oxidation of molybdenum(III) bromide with bromine.