Abstract
Ph 3TeCl reacts with a molar equivalent of a sodium dithiocarbamate, xanthate, or dithiophosphate (S SNa) to give Ph 3Te(S S) type derivatives. Molecular weight and conductivity measurements in solution suggest that these new triphenyltelluronium compounds are ionized in polar solvents but show a very strong tendency towards ion-association. The IR spectral data suggest that all these sulphur donors are coordinated in the η 1 mode in the new compounds. Their 1H NMR spectra are characteristic, and are consistent with the monodentate behaviour of the S-ligands. Photolysis of their toluene/benzene/chloroform solutions (∼ 1 to 10 m M) gives Ph 2TeO, biphenyl, and disulphide. When O 2 is bubbled through their solutions during photolysis, TeO 2 is also formed. The rates of the UV-promoted decomposition decreases in the order xanthate > dithiocarbamate > dithiophosphate.
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