Tungsten(VI) oxytetrabromide

Tungsten(VI) oxytetrabromide
Identifiers
CAS Number	13520-77-9;
3D model (JSmol)	Interactive image;
PubChem CID	139485;
	InChI InChI=1S/4BrH.O.W/h4*1H;;/q;;;;;+4/p-4;
	SMILES O=[W](Br)(Br)(Br)Br;
Properties
Chemical formula	WOBr4
Molar mass	519.46 g/mol
Appearance	red crystals
Density	5.5 g/cm³
Melting point	277 °C (531 °F; 550 K)
Boiling point	327 °C (621 °F; 600 K)
Solubility in water	reacts
Structure
Crystal structure	tetragonal
Hazards
EU classification (DSD) (outdated)	not listed
Related compounds
Other anions	Tungsten(VI) oxytetrafluoride; Tungsten(VI) oxytetrachloride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Tungsten(VI) oxytetrabromide is the inorganic compound with the formula W O Br₄. This a red-brown, hygroscopic solid sublimes at elevated temperatures. It forms adducts with Lewis bases. The solid consists of weakly associated square pyramidal monomers.[1] The related tungsten(VI) oxytetrachloride has been more heavily studied. The compound is usually classified as an oxyhalide.

References

Hess, H.; Hartung, H. (1966). "Die Kristallstruktur von Wolframoxidchlorid WOCl₄ und Wolframoxidbromid WOBr₄". Z. Anorg. Allg. Chem. 34 (3–4): 157–166. doi:10.1002/zaac.19663440306.

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[1] Hess, H.; Hartung, H. (1966). "Die Kristallstruktur von Wolframoxidchlorid WOCl₄ und Wolframoxidbromid WOBr₄". Z. Anorg. Allg. Chem. 34 (3–4): 157–166. doi:10.1002/zaac.19663440306.