THE REACTIONS OF SELENIUM TETRACHLORIDE AND TELLURIUM TETRACHLORIDE WITH SOME TRIVALENT ARYL ORGANOMETALLIC HALIDES

Article abstract of DOI:10.1016/S0022-328X(00)83985-6

The reactions of several trivalent organometallic aryl compounds with TeCl4 and SeCl4 were investigated.When diphenylboron bromide was treated with an equimolar quantity of tellurium tetrachloride in toluene, the phenyltellurium trihalide C6H5TeBr1.3Cl1.7 was obtained.The presence of the mixed halogens on tellurium can be explained in terms of a Lewis acid-base reaction between the boron and tellurium compounds.The reaction of diphenylboron bromide with selenium tetrachloride in toluene, produced mixed triarylselenonium chlorides.The presence of substituted toluenemolecules in the product is attributed to the reaction of selenium tetrachloride with toluene in the presence of the Lewis acid, boron trihalide.The reaction of triphenylaluminum with tellurium tetrachloride was found to produce triphenyl telluronium chloride.Both diphenylchloroarsine and diphenylchlorophosphine were oxidized from M^III to M^V by either selenium or tellurium tetrachloride.The products were isolated as diphenylarsinic acid and diphenylphosphinic acid, respectively.