Zirconium(IV) bromide
| Zirconium(IV) bromide | |
|---|---|
 |
|
|
Other names
zirconium tetrabromide |
|
| Identifiers | |
| CAS number | 13777-25-8  |
| ChemSpider | 75549  |
| Jmol-3D images | Image 1 |
|
|
|
|
| Properties | |
| Molecular formula | ZrBr4 |
| Molar mass | 410.86 g/mol |
| Appearance | off-white powder |
| Density | 4.201 g/cm3, solid |
| Melting point |
450 °C |
| Boiling point |
sublimes |
| Solubility in water | reacts with water |
| Structure | |
| Crystal structure | Cubic, cP40 |
| Space group | P-43m, No. 205 |
| Hazards | |
| EU classification | not listed |
| NFPA 704 |
 0
3
2
|
| Related compounds | |
| Related compounds | Zirconium(IV) chloride Titanium tetrabromide |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
|
| Infobox references | |
Zirconium(IV) bromide is the inorganic compound with the formula ZrBr4. This colourless solid is the principal precursor to other Zr–Br compounds.
[edit] Preparation and properties
ZrBr4 is prepared by the action of bromine on zirconium oxide via a carbothermic reaction:[1]
- ZrO2 + 2 C + 2 Br2 → ZrBr4 + 2 CO
Like many related tetrahalides, it is purified by sublimation.
Like related tetrabromides of Ti and Hf, ZrBr4 hydrolyzes readily to give oxy-bromide, with release of hydrogen bromide.
[edit] Structure
ZrBr4 adopts the structure seen for the related compounds, TiCl4 and TiBr4, featuring tetrahedral Zr centers. In contrast, ZrCl4 is polymeric in the solid state, featuring octahedral Zr centers.[2]
[edit] References
- ^ R. C. Young, Hewitt G. Fletcher, "Anhydrous Zirconium Tetrabromide" Inorganic Syntheses, 1939, vol. 1, pp. 49–51. doi:10.1002/9780470132326.ch18
- ^ Wells, A.F. (1984) Structural Inorganic Chemistry, Oxford: Clarendon Press. ISBN 0-19-855370-6.
|
|||||
 |
This inorganic compound-related article is a stub. You can help Wikipedia by expanding it. |
