Tellurium Bromide Cyanide

Diaryl tellurium bromide cyanides and diaryl tellurium iodide cyanides have been prepared. These compounds are colored, crystalline solids with sharp melting points. They are soluble in organic solvents and stable at 20°. ... 

Stirring allyl diaryl telluronium bromide with cyanogen bromide in chloroform for 8 h at 20° yielded diaryl tellurium bromide cyanides. ... 

Ethoxycarbonylbenzyl Tellurium Cyanide3 A dark colored solution of 0.52 g (1.28 mmol) of 2-bromocarbonylbenzyl tellurium bromide in 10 m/ of ethanol is added dropwise to a suspension of 0.30 g (4.6 mmol) of potassium cyanide in 5 ml of DMSO. The resultant yellow solution is stirred for 30 min and then poured into a mixture of 50 ml water/50 ml diethyl ether. The organic phase is separated, extracted several times with water, and dried with anhydrous calcium chloride. The diethyl ether is evaporated and the oily residue crystallizes on standing yield 0.28 g (69%) m.p. 72-73J (carbon tetrachloride/hexane). Similarly prepared was ... 

Tetraphenylarsonium benzyl(bromocyanato)tellurate(II) was prepared from benzyl tellurium cyanide and the arsonium bromide and also from tetraphenylarsonium tellurocya-nate and benzyl bromide s. 

Phenyl tellurium cyanide was obtained from sodium benzenetellurolate and cyanogen bromide. ... 

The reactions of organo tellurium cyanides are largely unexplored. Benzyl tellurium cyanides reacted with the stoichiometrically required amounts of bromine to yield benzyl tellurium tribromides An excess of bromine caused deposition of tellurium and the formation of benzyl bromide. ... 

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