in chloroform byproducts: C6H5I; a soln. of ICl is added dropwise with vigorous stirring to a soln. of Sn-compd. at room temp., after decolourisation the mixt. is refluxed for 2 h (N2); mixt. is concd. by distn. at reduced pressure (10 mmHg), to residue petroleum ether is added, kept at 0°C, ppt. is sepd. after 24 h, washed (petroleum ether) and dried at 20°C/10 mmHg, elem. anal.;

in chloroform; acetonitrile byproducts: NaCl; ICl in CH3CN added over 10-20 min to NaNCS in CH3CN at -10°C under stirring, stirred for 5-10 min, filtered, CHCl3 added, at room temp. Ph3SnCl added dropwise under stirring, refluxed for 2 h; filtered, concd., distilled at 10 mm/Hg, residue crystd. by addition of ether, washed (ether), dried at 30°C/10 mm/Hg; elem. anal.;