Triethylindium

Triethylindium

Names
IUPAC name Triethylindium
Other names Indium triethyl, triethylindigane, indiumtriethyl, TEI, TEIn
Identifiers
CAS Number	923-34-2
3D model (JSmol)	Interactive image
ChemSpider	92075
ECHA InfoCard	100.011.905
PubChem CID	101912
CompTox Dashboard (EPA)	DTXSID1061281
InChI InChI=1S/3C2H5.In/c3*1-2;/h3*1H2,2H3; Key: OTRPZROOJRIMKW-UHFFFAOYSA-N
SMILES CC[In](CC)CC
Properties
Chemical formula	In(CH2CH3)3
Molar mass	202.004 g·mol−1
Appearance	Colorless liquid [1]
Density	1.384 g/cm3 [1]
Melting point	−32 °C (−26 °F; 241 K) [1]
Boiling point	144 °C (291 °F; 417 K)
Solubility in water	Reacts violently [1]
Refractive index (nD)	1.5380
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Causes severe skin burns and serious eye damage. Spontaneously ignites on air.
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H250, H314
Precautionary statements	P210, P222, P231, P233, P260, P264, P280, P301+P330+P331, P302+P335+P334, P302+P361+P354, P304+P340, P305+P354+P338, P316, P321, P363, P370+P378, P405, P501
Related compounds
Related compounds	Trimethylindium Triethylborane Triethylaluminium Triethylgallium
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Triethylindium is an organometallic compound. Its chemical formula is In(CH₂CH₃)₃. ^{[2] [3]}

Synthesis

This compound can be obtained by reacting indium(III) bromide with a diethyl ether solution of ethylmagnesium bromide:

InBr₃ + 3 CH₃CH₂MgBr → In(CH₂CH₃)₃ + 3 MgBr₂

Other routes are also known. ^[4]

Properties

Indium triethyl is a colorless, toxic, oxidation and hydrolysis-sensitive liquid. It is a monomer in the gaseous and dissolved state. The compound reacts with halomethanes to form diethyl indium halides. ^[5]

Triethylindium reacts violently with water:

In(CH₂CH₃)₃ + H₂O → In(CH₂CH₃)₂OH + C₂H₆↑

Applications

Indium triethyl is used to prepare indium phosphide layers for microelectronics. ^[6]

See also

• Trimethylindium

References

1. "Triethylindium | AMERICAN ELEMENTS ®". Archived from the original on 2018-11-26. Retrieved 2025-08-18.
2. "INDIUM TRIETHYL". chemicalbook.com. Retrieved 7 June 2017.
3. "Substance Name: Indium, triethyl". chem.nlm.nih.gov. Retrieved 7 June 2017.
4. Foster, Douglas F.; Cole-Hamilton, David J. (1997). "Electronic Grade Alkyls of Group 12 and 13 Elements". Inorganic Syntheses. Vol. 31. p. 29 66. doi:10.1002/9780470132623.ch7. ISBN   978-0-471-15288-0.
5. Maeda, Takayoshi; Tada, Hisashi; Yasuda, Kiyoshi; Okawara, Rokuro (11 September 1970). "Reactions of triethylindium with halomethanes: preparations and properties of diethylindium halides". Journal of Organometallic Chemistry . 27 (1): 13–18. doi:10.1016/S0022-328X(00)82987-3.
6. Sakaki, H.; Woo, J.C.; Yokoyama, N.; Harayama, Y. (1999). Compound Semiconductors: Proceedings of the Twenty-Fifth International Symposium on Compound Semiconductors held in Nara, Japan, 12-16 October 1998. CRC Press. p. 529. ISBN   978-0-7503-0611-9.