2,2'thiodiethanol in ethanol dissolving 0.0027mmol of tetrachloroauric acid in 40ml EtOH, reducing with 2,2'thiodiethanol (0.038mol), 2h stirring (until becomming almost colorless); addg. of a stoichiometric amt. of Cy2PhP inside a glove bag (N2);; vacuum filtn.; elem. anal.;;

in ethanol mixt. stirred under N2 for 25 min, solvent evapd., acetone added and ppt. filtered off; soln. in ethanol and slow evapn., elem. anal.;