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|Section2= |Section3= |Section4= }} Trimethylindium (abbr: TMI or TMIn), In(CH3)3, (CAS #: 3385-78-2) is the preferred organometallic source of indium for metalorganic vapour phase epitaxy (MOVPE) of indium-containing compound semiconductors, such as InP, InAs, InN, InSb, GaInAs, InGaN, AlGaInP, AlInP, AlInGaNP, etc. TMI is a white, crystalline and sublimable solid, with melting point 88 °C. TMI is pyrophoric (ignites spontaneously upon contact with air), and its decomposition is often found to be uncontrollable as the temperature of its surrounding exceeds its melting point (i.e. > 88 °C) and reaches 101 °C and above. TMI is also reported to exhibit autocatalytic behavior during its thermal decomposition.〔Chemistry of Materials (2000); 〕 TMI therefore needs to be handled with the utmost care and caution, e.g. stored in preferably cool, dry place at 0-25 °C, and operating temperatures under 50 °C in order to avoid deterioration. TMI also reacts extremely violently with oxidizers and polyhalogenated compounds (such as CCl4 or CBrCl3), with which TMI is therefore incompatible. Hence, mixtures of TMI with oxidizers and/or polyhalogenated compounds must be avoided as they are potentially dangerous and explosive. ==Preparation and Reactions== Trimethylindium, InMe3 can be produced by reacting InCl3 in diethyl ether solution either with the Grignard reagent, MeMgI, or methyllithium, LiMe.〔''Main Group compounds'' in Inorganic Syntheses, vol 31, Schultz, Neumayer, Marks; Ed., Alan H. Cowley, John Wiley & Sons, Inc., 1997, ISBN 0471152889〕 : InCl3 + 3LiMe → Me3In.OEt2 + 3LiCl : InCl3 + 3MeMgI → Me3In.OEt2 + 3MgClI : the ether is removed at 25 °C in vacuo InMe3 is a Lewis acid, weaker than trimethylaluminium, AlMe3 and trimethylgallium, GaMe3. It forms adducts with secondary amines and phosphines.〔 A complex with the heterocyclic triazine ligand PriN(CH2)3 forms a complex with 6 coordinate In, where the C-In-C angles are 114°-117° with three long bonds to the tridentate ligand with N-In-N angles of 48.6° and long In-N bonds of 278 pm. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「trimethylindium」の詳細全文を読む スポンサード リンク
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