Zirconium(IV) bromide

Zirconium(IV) bromide

Chembox new
Name = Zirconium(IV) bromide
ImageFile = zirconium(IV)_bromide.jpg
ImageName = Zirconium(IV) bromide
OtherNames = zirconium tetrabromide
Section1 = Chembox Identifiers
CASNo = 1377-25-8
Section2 = Chembox Properties
Formula = ZrBr4
MolarMass = 410.86 g/mol
Appearance = off-white powder
Density = 4.201 g/cm3, solid
Solubility = reacts with water
MeltingPt = 450 °C
BoilingPt = sublimes
Section3 = Chembox Structure
CrystalStruct = cubic
Section7 = Chembox Hazards
EUClass = not listed
NFPA-H = 3
NFPA-R = 2
NFPA-F = 0
Section8 = Chembox Related
OtherCpds = Zirconium(IV) chloride
Titanium tetrabromide

Zirconium(IV) bromide is the chemical compound with the formula ZrBr4. This colorless solid is the principal precursor to other Zr–Br compounds. It is prepared by the action of bromine on zirconium powder and purified by sublimation.

Its structure is polymeric with octahedral ZrBr6 centers. The structure can also be described as cubic close-packed, with one fourth of the octahedral holes filled.

In the gas phase, ZrBr4 is tetrahedral. [Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.]

Like related tetrahalides of Titanium and Hf, ZrBr4 hydrolyzes in air to give oxy-halides, with release of hydrogen bromide.

References


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