Zirconium(IV) bromide

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Zirconium(IV) bromide
Zirconium(IV) bromide
Other names zirconium tetrabromide
Molecular formula ZrBr4
Molar mass 410.86 g/mol
Appearance off-white powder
Crystal structure cubic
CAS number [1377-25-8]
Density and phase 4.201 g/cm3, solid
Solubility in water reacts with water
Solubility in other solvents THF (forming an adduct)
Melting point 450 °C
Boiling point sublimes
EU classification not listed
NFPA 704 File:Nfpa h3.pngFile:Nfpa f0.pngFile:Nfpa r2.png
Related compounds
Related compounds Zirconium(IV) chloride
Titanium tetrabromide
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
Infobox disclaimer and references

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 Zr powder and purified by sublimation.

Its structure is polymeric with octahedral ZrBr6 centers. The structure can also be described as cubic close-packed, with 1/4th of the octahedral holes filled.

In the gas phase, ZrBr4 is tetrahedral.[1]

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


  1. Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.

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