Diorganotellurium(IV) bis(fluorocarboxylates)

Article abstract of DOI:10.1016/0022-1139(93)02955-E

Diorganotellurium(IV) bis(fluorocarboxylates) have been prepared by the interaction of R2Te(OMe)2 with fluorocarboxylic acids (R'COOH).Identical products were obtained by the metathetical reaction of R2TeCl2 with silver salts of the fluorocarboxylic acids in 1 : 2 molar ratios.However, when the reaction proceeded in a 1 : 1 molar ratio, the product was R2TeCl(OCOR').However, reaction of R2TeO with CF3COOH yielded <<(R2TeOCOCF3)2O>2*H2O> and <(R2TeOCOCF3)2O> species.The products are non-conducting and monomeric in solution.The mode of bonding of the fluorocarboxylate group and a possible geometry around the central tellurium atom are suggested on the basis of physicochemical and spectral (IR, mass, 1H, 13C, 19F and 125Te NMR) studies.