Telluronium Thiocyanate

TViphenyl Telluronium Cyanate1 0.15 g (1 mmol) of silver cyanate are dissolved in 850 ml of boiling water, 0.394 g (1 mmol) of triphenyl telluronium chloride dissolved in 50 ml of hot water are added, the mixture is stirred for several minutes, then cooled, and filtered. The filtrate is concentrated to a volume of 5 ml under vacuum, and the concentrate is cooled to 5° and filtered, The filtrate is allowed to stand for 48 h open to the atmosphere, the crystals are collected, crushed, and dried at 24 over phosphorus pentoxide yield 0.34 g (90%) m.p. 152°. Recrystallization from chloroform yields crystals containing 0.5 molecule of solvent. Similarly prepared was diphenyl methyl telluronium thiocyanate (m.p. 1250)2. 

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