Formation of Complexes with Thioureas, Selenoureas, and Phosphanes

Formation of Complexes with Thioureas, Selenoureas, and Phosphanes 

The coordinatively unsaturated aryl tellurium halides interact with electron-donor ligands to form complexes. The aryl tellurium halides prepared from diphenyl ditellurium and halogens were used in situ. Thiourea, selenourea (X = Cl, Br), tetramethylthio- and 

Irgolic Organic Tellurium Compounds with one Te,C Bond 

X-ray structural investigations of these complexes show the tellurium to be three-coordinated with bonds to a carbon, a halogen, and a chalcogen atom  

Treatment of the 1 1 complexes between phenyl tellurium bromide and ethylenethio- or -selenourea with sodium iodide in warm methanol yielded the corresponding phenyl tellurium iodide complexes.  

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