Tellurium, tetrakis dichloride

Tellurium, tetrakis(diethyldithiocarbamato)-stereochemistry, 1, 94 Tellurium, tetrakis(thiourea)-dichloride... 

CaHi 6Cl2N8Si,Te, Tetrathioureatellur ium( 11) dichloride, 30B, 285 C4H15Cl2N8SeaTe, Tetrakis(selenourea)tellurium(II) dichloride, 37B, 423... 

This compound can also be prepared by the addition of ammonium or potassium thiocyanate to aqueous solutions of tetrakis[thiourea]tellurium dichloride or dibromide containing thiourea6. 

When tetrakis[thiourea]tellurium dichloride was reacted with ammonium (diphenylthionophosphinimido) diphenylthiolophosphinate in methanol, yellow crystals of tellurium bis (diphenylthionophosphinimido)diphenylthiolophosphinate] precipitated1. 

The complex, tetrakis[thiourea]tellurium dichloride, reacted with bis[2-hydroxyethyl]di-thiocarbamic acid in aqueous methanol to precipitate tellurium bis[his(2-hydroxyethyl)di-thiocarbamate] as an orange solid11. 

Tellurium Bis[bis(2-hydroxyethyl)dithiocarbamate] 20 ml (50 mmol) of a 20% aqueous methanol solution of bis[2-hydroxyethyl]dithiocarbamic acid, prepared from carbon disulfide and bis[hydroxyethyl]amine, are slowly added to 5.0 g (10 mmol) of tetrakis[thiourea]tellurium dichloride are suspended in 50 ml of methanol containing 1 g of thiourea. The product separates as orange needles that are collected and recrystallizcd from methanol yield 4.4 g (90%) dec. 150°. 

Tetrakis[thiourea]tellurium dichlorides and sodium thiosulfonates reacted in methanol or dimethylformamide to give bis[thiourea tellurium bis[thiosulfonates]. 

The reaction of diphenyl tellurium dichloride with phenyl lithium yielded tetraphenyl tellurium1. Bis[trifluoromethyl] tellurium dichloride and bis[trifluoromethyl] cadmium reacted to produce tetrakis[trifiuoromethyl tellurium2. 

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). 

Bis[trifluoromethyl] tellurium dichloride reacted with the bis[trifluoromethyl] cadmium diglyme complex in acetonitrile at — 10°. The reaction mixture was filtered at low temperature and vacuum-distilled at low temperature. Tetrakis[trifluoromethyl] tellurium was isolated as a yellow liquid that was stable at 0° in the dark and crystallized at — 45°... 

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