Names | |
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Other names
zirconium tetrabromide
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Identifiers | |
3D model (
JSmol)
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ChemSpider | |
ECHA InfoCard | 100.034.002 |
EC Number |
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PubChem
CID
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CompTox Dashboard (
EPA)
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Properties | |
ZrBr4 | |
Molar mass | 410.86 g/mol |
Appearance | off-white powder |
Density | 4.201 g/cm3, solid |
Melting point | 450 °C (842 °F; 723 K) |
Boiling point | sublimes |
reacts with water | |
Structure | |
Cubic, cP40 | |
P-43m, No. 205 | |
Hazards | |
GHS labelling: | |
Danger | |
H314 | |
P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501 | |
NFPA 704 (fire diamond) | |
Related compounds | |
Other
anions
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Zirconium(IV) fluoride Zirconium(IV) chloride Zirconium(IV) iodide |
Other
cations
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Titanium tetrabromide Hafnium tetrabromide |
Related compounds
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Zirconium(III) bromide |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
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Zirconium(IV) bromide is the inorganic compound with the formula ZrBr4. This colourless solid is the principal precursor to other Zr–Br compounds.
ZrBr4 is prepared by the action of bromine on zirconium oxide via a carbothermic reaction: [1]
Like many related tetrahalides, it is purified by sublimation.
It can also be prepared by treatment of the borohydride complex with hydrogen bromide: [2]
Like related tetrabromides of Ti and Hf, ZrBr4 hydrolyzes readily to give the oxybromide, with release of hydrogen bromide.
No single crystal X-ray study of ZrBr4 has been described. Some reports suggest that it is isostructural with TiCl4 and TiBr4, featuring tetrahedral metal centers. [3] Other studies indicate a polymeric structure. [4] ZrCl4 is polymeric in the solid state, featuring octahedral Zr centers. [5]
(from abstract): The structure was assumed to be similar to that of SnI4 ... was verified by comparing exptl. and calcd. line intensities, by using Cu K radiation for powder patterns. ... Based on the value of the radius of the I− ion, the lattice parameter and the theoretical sp. gravity of ZrI4 and HfI4 were calcd.