Triethylindium
{{Chembox
| ImageFile = Triethylindium 200.svg
| ImageSize = 200px
| ImageAlt =
| IUPACName = Triethylindium
| OtherNames = Indium triethyl, triethylindigane, indiumtriethyl, TEI, TEIn
| Section1 = {{Chembox Identifiers
| CASNo = 923-34-2
| PubChem = 101912
| ChemSpiderID = 92075
| EINECS =
| SMILES = CC[In](CC)CC
| StdInChI= 1S/3C2H5.In/c3*1-2;/h3*1H2,2H3;
| StdInChIKey= OTRPZROOJRIMKW-UHFFFAOYSA-N
}}
| Section2 = {{Chembox Properties
| Formula = {{chem2|In(CH2CH3)3}}
| C=6|H=15|In=1
| Appearance = Colorless liquid
| Density = 1.384 g/cm3https://www.americanelements.com/triethylindium-923-34-2
| Solubility = Reacts violently
| MeltingPtC = -32
| BoilingPtC = 144
| VaporPressure =
| RefractIndex = 1.5380
}}
| Section7 = {{Chembox Hazards
| MainHazards = Causes severe skin burns and serious eye damage. Spontaneously ignites on air.
| GHSPictograms = {{GHS02}} {{GHS05}}
| GHSSignalWord = DANGER
| HPhrases = {{H-phrases|250|314}}
| PPhrases = {{P-phrases|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}}
| FlashPtC =
| AutoignitionPt =
}}
| Section9 = {{Chembox Related
| OtherCompounds = {{ubl|Trimethylindium|Triethylborane|Triethylaluminium|Triethylgallium}}
}}
}}
Triethylindium is an organometallic compound. Its chemical formula is {{chem2|In(CH2CH3)3}}.{{cite web|title=INDIUM TRIETHYL|url=http://www.chemicalbook.com/ProductChemicalPropertiesCB6730963_EN.htm|publisher=chemicalbook.com|accessdate=7 June 2017}}{{cite web|title=Substance Name: Indium, triethyl|url=https://chem.nlm.nih.gov/chemidplus/sid/0000923342|publisher=chem.nlm.nih.gov|accessdate=7 June 2017}}
Synthesis
This compound can be obtained by reacting indium(III) bromide with a diethyl ether solution of ethylmagnesium bromide:
:{{chem2|InBr3 + 3 CH3CH2MgBr → In(CH2CH3)3 + 3 MgBr2}}
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.{{cite journal|last1=Maeda|first1=Takayoshi|last2=Tada|first2=Hisashi|last3=Yasuda|first3=Kiyoshi|last4=Okawara|first4=Rokuro|title=Reactions of triethylindium with halomethanes: preparations and properties of diethylindium halides|journal=Journal of Organometallic Chemistry|date=11 September 1970|volume=27|issue=1|pages=13–18|doi=10.1016/S0022-328X(00)82987-3}}
Triethylindium reacts violently with water:
:{{chem2|In(CH2CH3)3 + H2O → In(CH2CH3)2OH + C2H6↑}}
Applications
Indium triethyl is used to prepare indium phosphide layers for microelectronics.{{cite book|last1=Sakaki|first1=H.|last2=Woo|first2=J.C.|last3=Yokoyama|first3=N.|last4=Harayama|first4=Y.|title=Compound Semiconductors: Proceedings of the Twenty-Fifth International Symposium on Compound Semiconductors held in Nara, Japan, 12-16 October 1998|date=1999|publisher=CRC Press|isbn=978-0-7503-0611-9|page=529|url=https://books.google.com/books?id=K4FZFlqv6YsC&pg=PA529}}