Abstract
Abstract Ph 3 TeCl reacts with a molar equivalent of a sodium dithiocarbamate, xanthate, or dithiophosphate (S SNa) to give Ph 3 Te(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 1 H 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 2 TeO, 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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