Gallium, trimethyl

If trimethyl gallium is mixed with arsine, ASH3, the hydrogen atoms released by the dissociation of this gas react with the methyl radicals released from gallium trimethyl according to the equation... 

Fig. 5. The Arrhenius plot of kl/k2i. e, dimethyl zinc O, trimethyl gallium , trimethyl indium. % figures are in terms of the theoretical yield of methyl radicals that would be obtained if all methyl-metal bonds were broken. All points are corrected to 13 torr pressure (toluene+0.3-2.5 % alkyl).

Gallium Trimethyl-(trimethyl-tri-methylsilylimin-phosphoran)-XIII/4. 340... 

GaC3H9 gallium, trimethyl 1445-79-0 2.592 3396 POCI3 phosphorus oxychloride 10025-87-3 3.398... 

The hydride of gallium is a hquid. When gallium trimethyl and hydrogen are subjected to an electric discharge, Ga2(Me)4H2 may be isolated from the products. It reacts quantitatively with triethylamine ... 

Wiberg and Johannsen state that GagHs is formed by the reaction of triethylamine and tetramethyldigallane the latter is formed by electrical glow discharge in a mixture of and gallium trimethyl. 

The dilFerence in these reorganization energies cannot wholly account for the variation of /-- 12kcal in the heats of addition reactions. This variation must be, in part, due to a weaker o-bond between phosphorus and boron atoms than between nitrogen and boron atoms. This can be shown from the heats of addition reactions between gallium trimethyl and either trimethylamine or tri-methyl pho sphine. These heats are shown in Table 7, together with similar data for indium trimethyl. 

Heats of addition reactions. Aluminium and gallium trimethyl... 

For the aluminium addition compounds, where there will be little zl-bonding, the order of decreasing donor strength of the Group VI ligands is 0>S>Se>Te. This is the order which is expected if only o -bonds are involved. For the gallium trimethyl compounds the order is changed to /S e Te. This reversal... 

Phosphine oxide complexes with aluminium or gallium trimethyl can be made by direct addition to the etherate (9.159), while dimeric phosphinate complexes can be made by slowly adding a benzene solution of a phosphinic acid to a trialkyl aluminium (9.160, 9.161) [11,12]. Large cages are obtained in Equations 9.162 and 9.163 [13,14]. Compounds (9.164) have Ga-O-P linkages. 

---