Triethyl gallium

Structural formula
General
Surname	Triethyl gallium
other names	Gallium triethyl Et 3 Ga TEG TEGa
Molecular formula	C 6 H 15 Ga
Brief description	viscous colorless liquid with a sweet, aromatic odor
External identifiers / databases
CAS number 1115-99-7 EC number 214-232-7 ECHA InfoCard 100.012.939 PubChem 66198 Wikidata Q2346835
properties
Molar mass	156.91 g mol −1
Physical state	liquid
density	1.067 g cm −3 (25 ° C)
Melting point	−82 ° C
boiling point	143 ° C
Vapor pressure	21 hPa (43 ° C)
solubility	decomposes on contact with water
safety instructions
GHS labeling of hazardous substances danger H and P phrases H: 225-250-261-314 EUH: 014 P: 210-222-231 + 232-280-305 + 351 + 338-422
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Triethylgallium with the constitutional formula Ga (C ₂ H ₅ ) ₃ is a chemical compound from the group of organometallic compounds of gallium .

Extraction and presentation

Like trimethylgallium, triethylgallium can be obtained from organic mercury compounds (e.g. diethyl mercury ).

${\displaystyle \mathrm {2\ Ga+3\ Hg(C_{2}H_{5})_{2}\longrightarrow 2\ Ga(C_{2}H_{5})_{3}+3\ Hg} }$

It can also be made from gallium (III) chloride with triethylaluminum and potassium chloride .

${\displaystyle \mathrm {GaCl_{3}+3\ Al(C_{2}H_{5})_{3}+3\ KCl\longrightarrow Ga(C_{2}H_{5})_{3}+3\ K[(C_{2}H_{5})_{2}AlCl_{2}]} }$

properties

Triethylgallium is a viscous, self-igniting liquid with a sweet, aromatic odor, which decomposes on contact with water. It is in the gas phase and in solution ( benzene , petroleum ether) as a monomer .

use

Triethylgallium is used as a starting material for the deposition of gallium semiconductor compounds , such as light-emitting diodes, laser diodes , high-power transistors and highly efficient solar cells .

Individual evidence

1. ↑ ^{a b c d} Georg Brauer (Ed.), With the collaboration of Marianne Baudler a . a .: Handbook of Preparative Inorganic Chemistry. 3rd, revised edition. Volume I, Ferdinand Enke, Stuttgart 1975, ISBN 3-432-02328-6 , p. 847.
2. ↑ ^{a b c d e f g h} data sheet triethylgallium, packaged for use in deposition systems at Sigma-Aldrich , accessed on February 21, 2014 ( PDF ).
3. ↑ AkzoNobel HPMO: Triethylgallium , accessed on Friday, February 21, 2014.