With  HSi(C6H5)2Cl in  tetrahydrofuran  byproducts: HSi(C6H5)2CH3, Au; mixing Au complex soln. with silane soln.; stirring at room temp., 2d; separation from pptd. gold; evapn.; addn. of petroleum ether; recrystn.of colorless residue (ether, petroleum ether, 0°C); detn. by 1H-NMR;