Trisulphates of unusual tellurium cations

Paul, Ram Chand ; Arora, C. L. ; Puri, J. K. ; Virmani, R. N. ; Malhotra, K. C. (1972) Trisulphates of unusual tellurium cations Journal of the Chemical Society, Dalton Transactions, 1972 (7). pp. 781-784. ISSN 0300-9246

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Tellurium forms red and yellow solutions when dissolved in disulphuric acid. From u.v., cryoscopic, conductance, and magnetic susceptibility measurements, it has been found that the red and yellow solutions are due to Te42+ and Te22+ cations respectively. Solid compounds of composition Te4S3O10 and Te2S3O10 have been obtained on treating tellurium with sulphur trioxide. From u.v. and i.r. spectra, cryoscopic and conductance studies in highly acidic media it has been found that these compounds are ionic in nature and tellurium is present as cation in an unusual oxidation state.

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