Ditellurium bromide

Ditellurium bromide is the inorganic compound with the formula Te₂Br. It is one of the few stable lower bromides of tellurium. Unlike sulfur and selenium, tellurium forms families of polymeric subhalides where the halide/chalcogen ratio is less than 2.^[2]

Ditellurium bromide

Identifiers
CAS Number	12514-37-3 Y
3D model (JSmol)	Interactive image
PubChem CID	163195843
CompTox Dashboard (EPA)	DTXSID801312131
InChI InChI=1S/Br.2Te Key: YFIRGYCOHWGSSA-UHFFFAOYSA-N
SMILES [Te].[Te].[Br]
Properties
Chemical formula	Te2Br
Molar mass	335.10 g·mol−1
Appearance	Gray crystalline solid
Melting point	224 °C[1]
Related compounds
Other anions	tritellurium dichloride
Other cations	selenium dibromide
Related compounds	tellurium tetrabromide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N (what is YN ?) Infobox references

Preparation and properties

Te₂Br is a gray solid. Its structure consists of a chain of Te atoms with Br occupying a doubly bridged site. It is prepared by heating tellurium with the appropriate stoichiometry of bromine near 215 °C,^[3] or reduction at room temperature of tellurium tetrabromide with tellurium metal in a tetrachloroaluminate ionic liquid.^[4] The corresponding chloride and iodide, Te₂Cl and Te₂I, are also known.^[3]

Other tellurium bromides include the yellow liquid Te₂Br₂, the orange solid TeBr₄,^[5] and the greenish-black solid TeBr₂.^[6] Complexes of the type TeBr₂(thiourea)₂ are well characterized.^[7]