Tellurium Hydroxide Perchlorates

Diaryl tellurium hydroxide perchlorates were obtained from equimolar amounts of diaryl tellurium oxides and perchloric acid1. 

Similarly obtained was diphenyl tellurium hydroxide perchlorate (m.p. 253°) in 64% yield1. 

Bis[4-mcthoxyphenyl] Tellurium Hydroxide Perchlorate 3.58 g (10 mmol) of bis[4-methoxyphenyl] tellurium oxide is suspended in 7 m/ of freshly distilled triethyl orthoformate. ml 2 mmol) of 70% perchloric acid is added dropwise to the stirred suspension, whereupon the tellurium oxide dissolves. The mixture is stirred for 15 min and then 150 m/ of dry diethyl ether are added with continued stirring. The solvent is decanted from the colorless oil which is triturated with fresh portions of dry diethyl ether until it crystallizes. The crystals are filtered, washed with dry diethyl ether, dried, and recrystallized from acetic acid/diethyl ether yield 3.4 g (74%) m.p. 219°. 

Diorgano tellurium oxides react with nitric and perchloric acid producing diorgano tellurium hydroxide perchlorates diperchlorates hydroxide nitrates or dinitrates". ... 

Tellurium was dissolved in aqueous sodium hydroxide. The solution was acidified with perchloric acid and an excess of sodium dialkyldithiocarbamate was added. Tris[dialkyl-dithiocarbamate] perchlorates of tellurium percipitated4. The X-ray structure analysis investigation of tellurium tris[dimethyldithiocarbamate] perchlorate revealed that all three dithiocarbamate groups and the perchlorate ion are bidentate4. 

Tetravalent diorgano tellurium compounds with one hydroxide and one perchlorate ... 

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