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Hafnium tetrabromide

Identifiers
CAS Number	13777-22-5
3D model (JSmol)	Interactive image
ChemSpider	75547
ECHA InfoCard	100.034.001
EC Number	237-416-9
PubChem CID	83725
CompTox Dashboard (EPA)	DTXSID2065628
InChI InChI=1S/4BrH.Hf/h4*1H;/q;;;;+4/p-4Key: FEEFWFYISQGDKK-UHFFFAOYSA-J
SMILES Br(Br)(Br)Br
Properties
Chemical formula	Br4Hf
Appearance	colorless solid
Density	5.094 g/cm
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314
Precautionary statements	P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Hafnium tetrabromide is the inorganic compound with the formula HfBr₄. It is the most common bromide of hafnium. It is a colorless, diamagnetic moisture sensitive solid that sublimes in vacuum. It adopts a structure very similar to that of zirconium tetrabromide, featuring tetrahedral Hf centers, in contrast to the polymeric nature of hafnium tetrachloride.

References

1. W. Thomas, H. Elias "Darstellung von HfCl₄ und HfBr₄ durch Umsetzung von Hafnium mit Geschmolzenen Metallhalogeniden" Journal of Inorganic and Nuclear Chemistry 1976, Volume 38, Pages 2227–2229. doi:10.1016/0022-1902(76)80199-6
2. Berdonosov, S. S.; Berdonosova, D. G.; Lapitskii, A. V.; Vlasov, L. G. "X-ray study of hafnium tetrabromide" Zhurnal Neorganicheskoi Khimii, 1963, vol. 8, 531-2.

• Bromides
• Hafnium compounds
• Metal halides