From Potassium Tellurocyanate and Organic Compounds

Potassium tellurocyanate, prepared from potassium cyanide and tellurium in DMSO, reacts with benzyl halides to produce benzyl tellurium cyanides in good yields. Because of the sensitivity of potassium tellurocyanate to oxygen and of some of the benzyl tellurium cyanides to light, the reactions must be carried out in an inert atmosphere (nitrogen or argon) under red light. 

Irgolic Organo Tellurium Compounds with 2 Te —C Bonds or 1 Te = C Bond 

Arenediazonium tetrafluoroborates react with potassium tellurocyanate in DMSO. The expected aryl tellurium cyanides are seldom stable enough to be isolable and are converted to diaryl ditellurium compounds. Only 2-nitrophenyl tellurium cyanide and 2,6-dimethyl-phenyl tellurium cyanide were obtained through chromatographic separation from the diaryl ditellurium compounds.  

1-Azulenyl tellurium cyanide was synthesized from potassium tellurocyanate and azulene.  

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