in benzene byproducts: H2, Si(CH3)4, KBr; Ga(CH2Si(CH3)3)2Br soln. added to KGa(CH2Si(CH3)3)2H2 soln. at room temp., stirred for 24 h, cooled to -196°C; fractionally distd., filtered, vacuum distd. at 110°C;

in benzene byproducts: H2, Si(CH3)4, KBr; Ga(CH2Si(CH3)3)2Br soln. added to KGa(CH2Si(CH3)3)2H2 soln. at room temp., stirred for 24 h, cooled to -196°C; fractionally distd., filtered, vacuum distd. at 110°C;