Dimethyl from diphenyl tellurium dichloride

Diphenyl Tellurium Diperchlorate/Dimethyl Sulfoxide Complex1 A mixture of 0.70 g (2 mmol) diphenyl tellurium dichloride, 0.83 g (4 mmol) silver perchlorate and 30 ml dichloromethane is stirred at 20° for 1 h. The precipitated silver chloride is removed by filtration. The filtrate is mixed with a solution of 0.15 g (2 mmol) dimethyl sulfoxide in 10 m/ dichloromethane. The mixture is refluxed for 5h. The solvent is distilled from the mixture. The residue is treated with petroleum ether (40 - 60°). The resulting white solid is recrystallized from petroleum ether (40-60°)/dichloromethane (3 1) and then dried under reduced pressure 95% yield m.p. 140°. 

Diphenyl Tellurium Bis[0,0 -dimethyl dithiophosphate]1 A mixture of 0.20 g (0.57 mmol) of diphenyl tellurium dichloride and 5 ml carbon disulfide is treated with 0.25 g (1.2 mmol) dry ammonium 0,0-dimethyl dithiophosphate. The stirred mixture is refluxed for 4 h, then coolded and filtered. The filtrate is concentrated under reduced pressure to approximately 1 ml. The residue is mixed with 1 m hexane and the mixture cooled to —4° yield 62% m.p. 116° (from carbon disulfide). 

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