Tellurium Dicyanates

Heating bis[2-broraoethyl] tellurium diacetate in acetic acid under a nitrogen atmosphere yielded 1,2-dibromoethane, 1,2-diacetoxyethane, and l-acetoxy-2-bromoethane  

Diaryl tellurium dichlorides and the sodium salts of ketoximes reacted in benzene at 20° to give diaryl tellurium dioximates. These oximates are white, crystalline solids. 

Diphenyl Tellurium Bis[diphenyl kctoximate] A mixture of 0.352 g (1 mmol) of diphenyl tellurium dichloride, 0.438 g (2 mmol) sodium diphenyl ketoximatc, and 60 ml benzene is stirred at 20° for 3 h. The sodium chloride is removed by filtration. The filtrate is concentrated under reduced pressure. The solid residue is dissolved in 20/ /benzene and reprecipitated by addition of 20/ /petroleum ether (60-80°). The crystals are dried under vacuum yield 80% m.p. 148°. 

diorgano tellurium dicyanates are treated as diorgano dinitrogen compounds (p. 637), however, it must be emphasized that this treatment is not intended to give information on the bonding mode. 

Irgolic Organo Tellurium Compounds with 2 Te —C Bonds or 1 Te = C Bond 

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Diary] Tellurium Dioximales Diorgano Tellurium Dicyanates... 

Diorgano tellurium dicyanates are formed when diorgano tellurium dihalides are stirred with silver cyanate in chloroform, acetone, or toluene. 

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