Telluride (chemistry)

Telluride
Identifiers
ChemSpider	19241429 Y
Jmol-3D images	Image 1
SMILES [Te--]
InChI InChI=1S/Te/q-2 Y Key: XSOKHXFFCGXDJZ-UHFFFAOYSA-N Y
Properties
Molecular formula	Te2−
Molar mass	127.6 g mol-1
Exact mass	129.906222753 g mol-1
Related compounds
Other anions	Sulfide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

The telluride ion is Te²⁻. It is the final stable member of the series of dianions O²⁻, S²⁻, and Se²⁻ (see chalcogenide).

Tellurides also describe a class of compounds formally derived from Te²⁻; i.e., their electronic structure is reasonably well approximated by considering the tellurium atom as having an octet configuration. Using this approach, Ag₂Te is derived from Ag⁺.

Examples:

• hydrogen telluride, H₂Te
• sodium telluride, Na₂Te

See category for a list.

Discussion

In aqueous solution, Te²⁻ exists only at high pH. In neutral conditions, hydrogen telluride ion, HTe⁻, is prevalent. In acid conditions, hydrogen telluride, H₂Te, forms. Products of three reaction products with tellurium have economic importance: cadmium, bismuth, and lead. Cadmium telluride has photovoltaic activity, while bismuth and lead tellurides are exceptional thermoelectric materials.^[1]

Notes

1. ^ "The Thespian Catalyst", David Saltzberg