Organo-Te-P, -As, -Sb, -Bi Compounds

These compounds are discussed in the Sections on Phosphorus, Arsenic, Antimony, and Bismuth Tellurolates (s.p. 198, 199). 

Aryl tellurium halides combine with phosphonium halides, arsonium halides, or ammonium pseudohalides to produce aryl(dihalo)tellurates(II) or aryl(dipseudohalo) tellurates(II). 

Tetraphenylarsonium Phenyl(diiodo)teilurate(II) 0.5 g (1.25 mmol) of diphenyl ditellurium are dissolved in 30 ml of warm acetonitrile, and a solution of 0.32 g (1.25 mmol) of iodine in 15 m/ of acetonitrile followed by a solution of 1.28 g tetraphenylarsonium iodide in 30 ml of acetonitrile are added with vigorous stirring. The resultant solution is filtered, the filtrate is concentrated to a volume of 20 ml under vacuum, and the clear red concentrate is placed in a refrigerator overnight to allow the product to crystallize yield 1.86 g (88 /o) m.p. 174-176°. 

Similarly prepared were tetraphenylarsonium phenyl ( dibromo ) tellur ate (II triphenylmethylphosphonium 4-methoxyphenyl ( dibromo ) tellur ate (II) triphenylmethylphosphonium 4-methoxyphenyl ( diiodo ) tellur ate (II) triphenylmethylphosphonium 4-ethoxyphenyl( diiodo ) tellur ate (II) triphenylmethylphosphonium 2-naphthyl ( diiodo )tellurate( II)  

Mixed organo(dihalo)tellurates(II) are obtained when the halides in the starting materials are different. 

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