6917-81-3

Basic information

• Product Name: dimethylgallium chloride
• Synonyms: dimethylgallium chloride;Gallium-dimethylchlorid;Chlorodimethylgallium;Dimethylchlorogallium;Einecs 230-027-5
• CAS NO: 6917-81-3
• Molecular Formula: C₂H₆ClGa
• Molecular Weight: 135.24504
• EINECS: 230-027-5
• Mol File: 6917-81-3.mol
• Article Data: 9

Chemical Properties

• Appearance: /
• CAS DataBase Reference: dimethylgallium chloride(CAS DataBase Reference)
• NIST Chemistry Reference: dimethylgallium chloride(6917-81-3)
• EPA Substance Registry System: dimethylgallium chloride(6917-81-3)

Safety Data

• Hazardous Substances Data: 6917-81-3(Hazardous Substances Data)

Usage

InChI:InChI=1/2CH3.ClH.Ga/h2*1H3;1H;/q;;;+1/p-1/rC2H6ClGa/c1-4(2)3/h1-2H3

Upstream product

• 1445-79-0 trimethyl gallium 
• 13450-90-3 Gallium trichloride 
• 6917-74-4 methylgallium dichloride 
• 75-24-1 trimethylaluminum 
• 539-43-5 4-methylphenylmercuric chloride 

Downstream Products

• 1445-79-0 trimethyl gallium 
• 203209-44-3 Me2Ga(1,1,1,5,5,5-hexafluoro-2,4-pentanedionato) 
• 1370047-75-8 Ga(CH₃)2(C₆H₁₁NCHCHNC₆H₁₁)⁽¹⁺⁾*(CH₃)2GaCl₂^(1-)*C₆H₅CH₃=(Ga(CH₃)2(C₆H₁₁NCHCHNC₆H₁₁))((CH₃)2GaCl₂)*C₆H₅CH₃ 
• 1246813-60-4 GaCl(CH₃)(((CH₃)2CH)2C₆H₃NCH₂C(CH₃)NC₆H₃(CH(CH₃)2)2) 
• 840475-66-3 dichloro(Se,Se'-tetraphenyldiselenoimidodiphosphinato)gallium(III) 
• 614760-72-4 [Ph₂CCNGaMe₂]2 
• 330199-65-0 Me₂GaNH[C₆H₂(2,4,6-t-Bu)3] 
• 330199-64-9 MeGa(NH[C₆H₂(2,4,6-t-Bu)3])2 
• 330199-63-8 Me₂GaNMe[C₆H₂(2,4,6-t-Bu)3] 
• 308086-81-9 (C₄H₉)2OC₆H₂CHNC₆H₄NH₂Ga(CH₃)Cl 

Relevant articles and documents

PROCESS FOR PREPARING TRIALKYLGALLIUM COMPOUNDS

The invention relates to a process for preparing trialkylgallium compounds of the general formula R3Ga. The process is based on the reaction of gallium trichloride (GaCh), optionally in a mixture with partially alkylated products, with an alkylaluminium compound of the type RaAlClb (where R═C1-C5-alkyl, a=1, 2 or 3, b=0, 1 or 2 and a+b=3) in the presence of at least two alkali metal halides (e.g. NaCl and KCl) as auxiliary base. Preference is given to using alkylaluminium sesquichloride (R3Al2Cl3) or trialkylaluminium (R3Al). The reaction mixture is heated to a temperature in the range from 120° C. to 250° C. and the trialkylgallium compound formed is separated off via a separator which is operated at a temperature which is more than 30° C. below the boiling point of the most volatile partially alkylated product. Complete alkylation is achieved here and partially alkylated products are recirculated to the reaction mixture. In a further step, the reaction mixture can be heated to a maximum of 350° C. and the remaining fully alkylated and partially alkylated products can be separated off. The process provides a high yield of trialkylgallium compound and displays high gallium utilization; the products are used, e.g., as precursors for MOCVD processes.

PROCESS FOR PREPARING TRIALKYL COMPOUNDS OF METALS OF GROUP IIIA

The invention relates to a process for preparing trialkylmetal compounds of the general formula R3M (where M = metal of group llIA of the Periodic Table of the Elements (PTE), preferably gallium or indium, and R = C1-C5-alkyl, preferably methyl or ethyl). The process is based on the reaction of metal trichloride (MeCl3) with alkylaluminium sesquichloride (R3AI2CI3) in the presence of at least one alkali metal halide as auxiliary base. The reaction mixture is heated to a temperature above 120°C and the trialkylmetal compound is separated off from the reaction mixture via a separator, with partially alkylated products being at the same time recirculated to the reaction mixture. In a further step, the reaction mixture is heated to a maximum of 350°C and the remaining alkylated and partially alkylated products are separated off. The products obtained in this way can optionally be recycled in the process. The process displays a high yield of trialkylmetal compound and also a high metal utilization; the products are used as precursors for MOCVD processes.