Telluride (chemistry)

Telluride
Identifiers
CAS Number	22541-49-7 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:30453;
ChemSpider	19241429 ;
Gmelin Reference	6498
CompTox Dashboard (EPA)	DTXSID501027012 ;
	InChI InChI=1S/Te/q-2 Key: XSOKHXFFCGXDJZ-UHFFFAOYSA-N ;
	SMILES [Te--];
Properties
Chemical formula	Te2−;
Molar mass	127.60 g·mol−1
Conjugate acid	Hydrogen telluride
Related compounds
Other anions	Sulfide, selenide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

The telluride ion is the anion Te²⁻ and its derivatives. It is analogous to the other chalcogenide anions, the lighter O²⁻, S²⁻, and Se²⁻, and the heavier Po²⁻.^[1]

In principle, Te²⁻ is formed by the two-e⁻ reduction of tellurium. The redox potential is −1.14 V.^[2]

Te(s) + 2 e⁻ ↔ Te²⁻

Although solutions of the telluride dianion have not been reported, soluble salts of bitelluride (TeH⁻) are known.^[3]

^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. doi:10.1016/C2009-0-30414-6. ISBN 978-0-08-037941-8.
^ "Standard Reduction Potentials" Archived 2013-02-28 at the Wayback Machine, Indiana University.
^ Houser, Eric J.; Rauchfuss, Thomas B.; Wilson, Scott R. (1993). "Synthetic and structural studies on (RC5H4)4Ru4E40/2+ (E = sulfur, selenium, tellurium): Mobile metal-metal bonds within a mixed-valence ruthenium (IV)/Ruthenium(III) cluster". Inorganic Chemistry. 32 (19): 4069–4076. doi:10.1021/ic00071a017.

[1] Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. doi:10.1016/C2009-0-30414-6. ISBN 978-0-08-037941-8.

[2] "Standard Reduction Potentials" Archived 2013-02-28 at the Wayback Machine, Indiana University.

[3] Houser, Eric J.; Rauchfuss, Thomas B.; Wilson, Scott R. (1993). "Synthetic and structural studies on (RC5H4)4Ru4E40/2+ (E = sulfur, selenium, tellurium): Mobile metal-metal bonds within a mixed-valence ruthenium (IV)/Ruthenium(III) cluster". Inorganic Chemistry. 32 (19): 4069–4076. doi:10.1021/ic00071a017.

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