Zirconium(IV) bromide
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| Zirconium(IV) bromide | |
|---|---|
| Image:Zirconium(IV) bromide.jpg | |
| General | |
| 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] |
| Properties | |
| 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 |
| Hazards | |
| EU classification | not listed |
| NFPA 704 |    |
| 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 |
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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
[edit] References
- ^ Holleman, A. F.; Wiberg, E. "Inorganic Chemistry" Academic Press: San Diego, 2001. ISBN 0-12-352651-5.
[edit] External links
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