Exchange of Hydroxide for Other Anions

Triorgano telluronium hydroxides, obtained by treating triorgano telluronium halides with an aqueous suspension of silver oxide, react with acids such as hydrohalic acids , hexafluorosilicic acid , picric acid and with alkali metal halides The telluronium hydroxides are generally not isolated. 

Triphenyl Telluronium Fluoride 3.3 g (8.6 mmol) of triphenyl telluronium chloride, 1.0 g (4.3 mmol) of silver oxide and distilled water are stirred for 2 h at 20°, the mixture is filtered, and the filtrate is neutralized with hydrofluoric acid. The resultant solution is evaporated under vacuum at 20° and the residue is recrystallized from dry acetone the product melts at 203° with decomposition beginning at 190° m.p. 180° 3 

Trimethyl telluronium fluoride [m.p. 128° (dec)], a deliquescent material, prepared was similarly  

Neutralization of a trimethyl telluronium hydroxide solution to methyl red with hexafluorosilicic acid followed by evaporation of the solution to dryness on a steam produced bis[trimethyl telluronium] hexafluorosilicate (decomposes at 320-336°, from ethanol)  

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