Disodium compounds, organo

The halogenolysis of dialkyl ditellurium compounds is a convenient method for the preparation of alkyl tellurium trihalides because dialkyl ditellurium compounds are easily accessible through alkylation of disodium ditelluride (p. 258). Diaryl ditellurium compounds generally obtained via reduction of organo tellurium trichlorides (p. 274), serve as starting materials for the syntheses of aryl tellurium tribromides and triiodides (Vol. IX, p. 1156) that are not obtainable from the hydrocarbons and tellurium telrabromide or tetraiodide. 

For methods to prepare acyl organo tellurium compounds from disodium telluride, carboxylic acid chlorides, and alkyl halides, see p. 500. 

Elemental analysis for tin was conducted as described in reference 12 except that one drop of water and concentrated nitric acid (10 drops) are added subsequent to the sodium fusion and this mixture is heated until brown fumes are evolved. Also, the stannic sulfide is heated in air converting it to stannic oxide which is weighed and this weight utilized in determining the percentage tin. This process is not suitable for extremely volatile organo-stannanes such as dibutyltin dichloride, but is suitable for tin polyesters, polyethers and polyamines. Tin polyesters were utilized as test compounds. Thus, the polyester derived from disodium adipate and dibutyltin dichloride was found to contain 31 percent tin and the calculated value is 31 percent. 

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