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EU classification (DSD) (outdated)	not listed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).

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.

[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.

[1]

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EU classification (DSD) (outdated)	not listed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).