in not given

in tetrahydrofuran byproducts: NaCl; Addn. of filtered Na(Mn(CO)5) soln. to a suspn. of Pd2Cl2(μ-dppm)2 (cooling (-78°C), N2, stirring), no react. until warming to 0°C, slow color change (orange to brown-violet).; Filtn. after 4 h, evapn. in vac., addn. of pentane at -20°C, filtn. of brown powder, dissolving in THF, replacing by freshly distd. CH2Cl2, addn. of n-hexane, cooling (-20°C), elem. anal., column chromy. of filtrate yields other complexes.;

in tetrahydrofuran suspending Pd2(dppm)2Cl in THF, addn. of LiBF4 and stirring for 5 mins. addn. of Au(SEt2)Cl in THF (results in deep red soln.), stirring for 1 h, filtration; all manipulations under N2; redn. of volume, pptn. and washing with Et2O, removal of Au2(dppm)Cl2 by crystn. from THF, crystn. from CH2Cl2/pentane, fractional crystn.;

in dichloromethane soln. of Pt-complex in CH2Cl2, addn. of Au-complex in CH2Cl2 (0°C), immediate color change from light to dark red, stirred (1 h); solvent removed (dark red solid), not isolated, monitored by NMR;