1: chloroform 2: benzene 3: acetonitrile View Scheme

in chloroform to refluxing soln. of Ph2Pb2 in chloroform is added dropwise chloroformsoln. of (C6F5)3SbCl2 and mixt. is refluxed for 5 h; mixt. is cooled at ice temp., solid is filtered off;

in chloroform to stirred ice cold soln. of (C6F5)3SbCl2 in chloroform bis(triphenyltin)sulphide in chloroform is added dropwise during 30 min and mixt. is stirred for 3 h and allowed to attain room temp.;

in chloroform to refluxing soln. of Ph2Pb2 in chloroform is added dropwise chloroformsoln. of (C6F5)3SbCl2 and mixt. is refluxed for 5 h; mixt. is cooled at ice temp., solid is filtered off;

in chloroform to stirred ice cold soln. of (C6F5)3SbCl2 in chloroform bis(tributyltin)sulphide in chloroform is added dropwise during 30 min and mixt. is stirred for 3 h and allowed to attain room temp.; soln. is concd. to dryness, residue is dissolved in hot petroleum-ether(bp.60-80°C), soln. is cooled and filtered, solid - (C6F5)3Sb; filtrate is concd. at reduced pressure;

2: Br2 / tetrachloromethane View Scheme