Routes to ultra-pure alkyls of indium and gallium and their adducts with ethers, phosphines and amines

Synthesis and purification of trimethylgallium for MOCVD: molecular structure of (KF)4�4(Me3Ga)

“…The suggestion that the inactive K[Me 2 AlCl 2 ] complex disproportionates via Eqn [1] to reproduce the reactive trimethylaluminium, does not agree with our earlier investigations, which indicated that the reaction is slow, also forming the K[Me 3 AlCl] complex which splits slowly only at elevated temperature to yield trimethylaluminium (K. B. Starowieyski, unpublished results).…”

“…Addition of further amounts of 1 did not cause a drastic increase of the exothermic effect. A slightly larger effect was observed for the reaction in a 2:1 molar ratio (Eqn [3]). The distillation of the mixture obtained from the reaction of 1 mol of 2 and 10 mol of 1 began at 118°C.…”

“…The residue, 3a2Me 3 Al 2 1a2GaCl 3 together with the vacuum distillate, was used in the consecutive reaction. A 750-ml three-necked flask equipped with thermometer, mechanical stirrer, dropping funnel and distillation set (Vigreux column, air and dry-ice condensers, collecting flask) was evacuated and filled with 5N (99.999% N 2 ) nitrogen.…”

“…3 Generally, metathesis reactions are widely applied, but they have strong limitations. 3 Generally, metathesis reactions are widely applied, but they have strong limitations.…”

“…3 Generally, metathesis reactions are widely applied, but they have strong limitations. [3][4][5] Many reactions yield only partly alkylated R m MX p . For example, in the case of R 3 Ga synthesis the use of R 3 Al results in exchange of even less than one alkyl group of trialkylaluminium in the reaction with GaCl 3 .…”