Phenyl tellurocyanate

Finally, phenyl tellurocyanate reacts with alcohols, ROH, to give tellurides RTePh in 32—78 % yields in a reaction which is analogous to that of phenyl selenocyanate. ... 

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 compounds6. 

---