2- Biphenyl tellurium trichloride

Biphenyl tellurium trichloride by heating in nitrobenzene cyclizes to dibenzotel-lurophene dichloride. ... 

Bisftrifluoromethyl] tellurium dichloride and dibromide react with excess halogen in acetonitrile to form trifluoromethyl tellurium trichloride and tribromide2 3. When the dihalidcs were reacted with iodine, trifluoromethyl tellurium triiodide was not detected3. When dibenzotellurophene dichloride and tellurium tetrachloride were refluxed in 1,2-dichlorobenzene, the five-membered ring was opened and 2,2 -bis[trichlorotelluro biphenyl formed4. 

The identity of bis pentqfluorophenyl ditellurium obtained by the reduetion of pentafluoro-phenyl tellurium trichloride by zinc in ethanol seems to be uncertain . l,4-Bis[trichlorotelluro]benzene and 2,2 -bis[trichlorotelluro]biphenyl ° were redueed to polymeric ditellurium compounds that were insoluble in organic solvents. 

---