Molybdenum(IV) bromide

Molybdenum(IV) bromide

Names
Other names molybdenum tetrabromide
Identifiers
CAS Number	13520-59-7
3D model (JSmol)	Interactive image dihydrate: Interactive image
ChemSpider	9103085
PubChem CID	10927841 dihydrate: 139031385
CompTox Dashboard (EPA)	DTXSID00448625
InChI InChI=1S/4BrH.Mo/h4*1H;/q;;;;+4/p-4 Key: WWJBJTBTXOHQAZ-UHFFFAOYSA-J dihydrate:InChI=1S/4BrH.Mo.2H2O/h4*1H;;2*1H2/q;;;;+2;;/p-4 Key: JTPYMODOMPNUHQ-UHFFFAOYSA-J
SMILES [Br-].[Br-].[Br-].[Br-].[Mo+4] dihydrate:O.O.[Br-].[Br-].[Br-].[Br-].[Mo+2]
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. ^[1]

Molybdenum(IV) bromide can also be prepared by oxidation of molybdenum(III) bromide with bromine. ^[2]

References

1. Calderazzo, Fausto; Maichle-Mössmer, Cäcilie; Pampaloni, Guido; Strähle, Joachim (1993). "Low-Temperature Syntheses of Vanadium(III) and Molybdenum(IV) Bromides by Halide Exchange". J. Chem. Soc., Dalton Trans. (5): 655–658. doi:10.1039/DT9930000655.
2. Georg Brauer (Hrsg.) u. a.: Handbuch der Präparativen Anorganischen Chemie. 3., umgearbeitete Auflage. Band III, Ferdinand Enke, Stuttgart 1981, ISBN   3-432-87823-0, S. 1537.