H2O in tetrahydrofuran byproducts: PbO; dropwise addn. of Ph3PbLi to C(Ph2PbBr)4 (-50°C, during 40 min),stirring (0°C, 2 h); addn. of ice (pptn.), filtration, partial evapn. of filtrate, pptn. on MeOH addn.;

in tetrahydrofuran byproducts: Pb2(C6H5)6, LiCl; Ph3PbLi in THF added to a slight excess of Ph3SnCl in THF at - 50 degree.C under N2 within 30 min, stirred at -30 degree.C for 1 h, then at -78 degree.C to freeze out.; Filtered with suction (in air), dried in vac.; dissolved in CHCl3, filtered, light petroleum added; elem. anal., MS, IR, NMR, Raman, X-ray structure.;