carbon disulfide; tributylphosphine in 1,2-dichloro-ethane under N2; CS2 was added to a soln. of the Sn-compound and Bu3P; stirred for 20 h at 50°C; excess CS2 and solvent were removed in vac.; column chromy. (silica gel; eluent: C6H6); NMR; elem. anal.;

carbon disulfide in 1,2-dichloro-ethane heating with stirring at 100°C for 12 h; cooling; CS2 and solvent were removed in vac.; yield after column chromy. (silica gel; eluent: n-hexane/benzene) and vac. distn. (100°C/2 Torr): 52percent; elem. anal.; NMR; mass spectra;