Beryllium telluride

Crystal structure
__ Be 2+      __ Te 2−
General
Surname	Beryllium telluride
other names	Beryllium (II) telluride
Ratio formula	BeTe
Brief description	gray powder
External identifiers / databases
CAS number 12232-27-8 EC number 235-451-4 ECHA InfoCard 100.032.217 PubChem 82991 Wikidata Q416128
properties
Molar mass	136.61 g mol −1
Physical state	firmly
density	5.09 g cm −3
solubility	Decomposes in water
safety instructions
GHS hazard labeling no classification available
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Beryllium telluride is an inorganic chemical compound of beryllium from the telluride group .

Extraction and presentation

Beryllium telluride can be obtained by reacting beryllium with tellurium at 1100 ° C in a stream of hydrogen .

${\displaystyle \mathrm {Be+Te\longrightarrow BeTe} }$

properties

Beryllium telluride is a gray powder that decomposes relatively quickly to hydrogen telluride in moist air . This reaction takes place vigorously with water. Beryllium telluride crystallizes in the cubic zinc blende type with the space group F 4 3 m (space group no. 216) . It is a II-VI compound semiconductor with a band gap of 2.8 eV.

Individual evidence

1. ↑ ^{a b c d e} Jean D'Ans, Ellen Lax: Paperback for chemists and physicists . Springer DE, 1997, ISBN 3-540-60035-3 , pp. 336 ( limited preview in Google Book search).
2. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.
3. ↑ Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume II, Ferdinand Enke, Stuttgart 1978, ISBN 3-432-87813-3 , p. 896.
4. ↑ Stephen J. Pearton: Processing of 'Wide Band Gap Semiconductors . William Andrew, 2001, ISBN 0-8155-1439-5 , pp. 2 ( limited preview in Google Book search).