Tellurium tetrabromide

Tellurium tetrabromide
Identifiers
CAS Number	10031-27-3;
3D model (JSmol)	Interactive image;
ChemSpider	74282;
ECHA InfoCard	100.030.070
EC Number	233-090-7;
PubChem CID	82311;
UNII	7A29EFJ1AF ;
CompTox Dashboard (EPA)	DTXSID5064914 ;
	InChI InChI=1S/Br4Te/c1-5(2,3)4 Key: PTYIPBNVDTYPIO-UHFFFAOYSA-N;
	SMILES Br[Te](Br)(Br)Br;
Properties
Chemical formula	TeBr4
Molar mass	447.22 g/mol
Appearance	yellow-orange crystals
Density	4.3 g/cm3, solid
Melting point	388 °C (730 °F; 661 K)
Boiling point	decomposes at 420 °C (788 °F; 693 K)
Structure
Crystal structure	monoclinic
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H314
Precautionary statements	P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
Related compounds
Other anions	Tellurium tetrafluoride; Tellurium tetrachloride; Tellurium tetraiodide
Other cations	Selenium tetrabromide
Related compounds	Ditellurium bromide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tellurium tetrabromide (Te Br₄) is an inorganic chemical compound. It has a similar tetrameric structure to TeCl₄.^[3] It can be made by reacting bromine and tellurium.^[4] In the vapour TeBr₄ dissociates:^[3]

TeBr₄ → TeBr₂ + Br₂

It is a conductor when molten, dissociating into the ions TeBr₃⁺ and Br⁻. When dissolved in benzene and toluene, TeBr₄ is present as the unionized tetramer Te₄Br₁₆.^[3] In solvents with donor properties such as acetonitrile, CH₃CN ionic complexes are formed which make the solution conducting:

TeBr₄ + 2CH₃CN → (CH₃CN)₂TeBr₃⁺ + Br⁻

References

^ Thermochemical Data of Elements and Compounds", M. Binnewies, E. Milke, Wiley-VCH, 2002, ISBN 3-527-30524-6
^ "C&L Inventory". echa.europa.eu.
^ ^a ^b ^c Inorganic Chemistry,Egon Wiberg, Arnold Frederick Holleman Elsevier 2001 ISBN 0-12-352651-5
^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

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[1] Thermochemical Data of Elements and Compounds", M. Binnewies, E. Milke, Wiley-VCH, 2002, ISBN 3-527-30524-6

[2] "C&L Inventory". echa.europa.eu.

[Wiberg-3] Inorganic Chemistry,Egon Wiberg, Arnold Frederick Holleman Elsevier 2001 ISBN 0-12-352651-5

[4] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.

[1]

[2]

[3]

[4]

v t e Bromine compounds
Br(−I)	Br⁻ CH₃Br CH₂Br₂ CHBr₃ CBr₄ HBr C₃H₅Br
Br(−I,I)	Br₃⁻
Br(I)	BrCl BrF BrN₃ BrNO₃ Br₂O BrO⁻ NBr₃
Br(II)	BrO
Br(I,V)	Br₂O₃
Br(III)	BrF₃ BrO₂⁻
Br(IV)	BrO₂
Br(V)	BrF₅ Br₂O₅ BrO₃⁻ BrOF₃ BrO₂F
Br(VII)	BrO₄⁻ BrO₃F

Identifiers

CAS Number	10031-27-3
3D model (JSmol)	Interactive image
ChemSpider	74282
ECHA InfoCard	100.030.070
EC Number	233-090-7
PubChem CID	82311
UNII	7A29EFJ1AF^Y
CompTox Dashboard (EPA)	DTXSID5064914
InChI InChI=1S/Br4Te/c1-5(2,3)4 Key: PTYIPBNVDTYPIO-UHFFFAOYSA-N
SMILES Br[Te](Br)(Br)Br
Properties
Chemical formula	TeBr₄
Molar mass	447.22 g/mol
Appearance	yellow-orange crystals
Density	4.3 g/cm³, solid
Melting point	388 °C (730 °F; 661 K)^[1]
Boiling point	decomposes at 420 °C (788 °F; 693 K)
Structure
Crystal structure	monoclinic
Hazards
GHS labelling:^[2]
Pictograms
Signal word	Danger
Hazard statements	H301, H314
Precautionary statements	P260, P264, P280, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P310, P321, P363, P405, P501
Related compounds
Other anions	Tellurium tetrafluoride Tellurium tetrachloride Tellurium tetraiodide
Other cations	Selenium tetrabromide
Related compounds	Ditellurium bromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Tellurium tetrabromide

References

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