Tellurium Bis diphenylthionophosphinimido diphenylthiolophosphinates

When tetrakis[thiourea]tellurium dichloride was reacted with ammonium (diphenylthionophosphinimido) diphenylthiolophosphinate in methanol, yellow crystals of tellurium bis[ (diphenylthionophosphinimido) diphenylthiolophosphinate] precipitated.  

Tellurium Bis[(diphenylthionophosphinimido)diphenylthiolopliosphinate] 0.20 g (0.38 mmol) of tetrakis-[thiourea]tellurium dichloride dihydrate are dissolved in 20 ml of methanol, the solution is stirred, and 0.47 g (1.0 mmol) of ammonium (diphenylthionophosphinimino)diphenylthiophosphinate dissolved in 80 m/ of methanol are added. The resultant yellow solid is washed with ethanol and dried yield 0.3 g (75%) m.p. 257° (dec.) (from chloroform). 

Tellurium bis[thiolohenzoate] was obtained from sodium tellurite and thiobenzoic acid in strongly acidic medium. The compound was recrystallized from benzene. A single-crystal X-ray structural analyses showed the thiolobenzoate groups to be bidentate.  

Tellurium tetrachloride and the potassium or piperidinium salts of thiolobenzoic acid reacted to form tellurium bis[thiolobenzoates].  

Irgolic Organo-tellurium Compounds without a C,Te-Bond 

---