in ethanol
mixing of soln. of potassium ethoxide in ethanol with CS2; warming to 25°C; saturation with H2S for 2.5 h; warming to 45°C; slowlyaddn. of CS2 (over approximately 30 min); stirring; pptn., stirring for 1.5 h at 45°C, cooling to 0°C, holdingat that temp. for 1 h, filtration, washing 3 times with cold ethanol, d rying in vac. over P2O5 at 80°C for a week; elem. anal;
