Gallium (III) telluride

Crystal structure
Crystal structure of the cubic gallium (III) telluride, Ga 2 Te 3 __ Ga 3+      __ Te 2−
Space group	F 4 3 m (No. 216)
General
Surname	Gallium (III) telluride
other names	Gallium sesquitelluride
Ratio formula	Ga 2 Te 3
Brief description	black solid
External identifiers / databases
CAS number 12024-27-0 EC number 234-694-3 ECHA InfoCard 100,031,528 Wikidata Q4119710
properties
Molar mass	522.27 g mol −1
Physical state	firmly
density	5.57 g cm −3
Melting point	790 ° C
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 .

Gallium (III) telluride is an inorganic chemical compound of gallium from the group of tellurides and, along with gallium (II) telluride, one of the well-known gallium tellurides.

Extraction and presentation

Gallium (III) telluride can be obtained by reacting gallium with tellurium .

${\displaystyle \mathrm {2\ Ga+3\ Te\longrightarrow Ga_{2}Te_{3}} }$

It is also possible to display it by reacting gallium (III) oxide or gallium (III) hydroxide with hydrogen tellurium .

${\displaystyle \mathrm {Ga_{2}O_{3}+3\ H_{2}Te\longrightarrow Ga_{2}Te_{3}+3\ H_{2}O} }$

${\displaystyle \mathrm {2\ Ga(OH)_{3}+3\ H_{2}Te\longrightarrow Ga_{2}Te_{3}+6\ H_{2}O} }$

properties

Gallium (III) telluride is a black, hard and fairly brittle solid with a crystal structure of the zinc blende type (a = 590.6 pm) or with an orthorhombic superstructure (a = 417 pm, b = 2360 pm, c = 1252 pm) .

Individual evidence

1. ↑ Ken Kurosaki, Hideaki Matsumoto, Anek Charoenphakdee, Shinsuke Yamanaka, Manabu Ishimaru, Yoshihiko Hirotsu: Unexpectedly low thermal conductivity in natural nanostructured bulk Ga ₂ Te ₃ . In: Applied Physics Letters. 93, 2008, p. 012101, doi : 10.1063 / 1.2940591 .
2. ↑ ^{a b c d e f g} Georg Brauer , with the assistance of Marianne Baudler u. a. (Ed.): Handbook of Preparative Inorganic Chemistry . 3rd, revised edition. tape I . Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , pp. 861 .
3. ↑ This substance has either not yet been classified with regard to its hazardousness or a reliable and citable source has not yet been found.