in tetrahydrofuran suspn. of (C6H6Mn(CO)3)ClO4 in THF treated at -78°C with THF soln. of PhS(O)CH2Li, warmed to room temp. with stirring; filtered, evapd. in vac., chromd. (Al2O3, ether/CH2Cl2/hexane), purified by sublimation at 125°C and 0.1 mmHg; elem. anal.;