Diphenyl silver fluoride

Diphenyl Tellurium Difluoride6 A mixture of 15 ml of dry toluene and 2 g (16 mmol) of silver fluoride is heated to reflux, and 1.3 g (3 mmol) of diphenyl tellurium diiodide are added in portions to the refluxing silver fluoride suspension. Additional diiodide is added after the reddish color of the solution has disappeared. The hot solution is filtered under aspirator vacuum, The filtrate deposits the crystalline product on cooling. The difluoride is filtered off, washed with toluene, and recrystallized from benzene the pure product has m.p. 154°. 

Diphenyl-l, 2-oxatelluroUum Fluoride 0.252 g (1.3 mmol) of silver tetrafluoroborate is dissolved in 20 ml of dry acetonitrile, 0.50 g (1.3 mmol) of 3,5-diphenyl-l,2-oxatellurolium chloride powder is added, and the resultant mixture is stirred at 20° under nitrogen for 3 h. The mixture is then filtered through a pad of Celite, the filtrate is concentrated, and the residue is dissolved in 50 ml of dichloromethane. This solution is washed with brine, dried with anhydrous sodium sulfate, filtered, and concentrated to cause the product to crystallize yield 0.16 g (33%) m.p. 88-90°. 

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