carbon disulfide; tributylphosphine in 1,2-dichloro-ethane under N2; CS2 was added to a soln. of the Sn-compound and Bu3P; stirred for 5 h at 50°C; excess CS2 and solvent were removed in vac.; column chromy. (silica gel; eluent: C6H6); elem. anal.; NMR; IR;

carbon disulfide in 1,2-dichloro-ethane heating with stirring at 100°C for 12 h; cooling; CS2 and solvent were removed in vac.; column chromy. (silica gel; eluent: n-hexane/benzene); vac. distn. (52°C/0.1 Torr); elem. anal.; NMR; mass spectra;