Tellurium diethyldithiocarbamate

Tellurium diethyldithiocarbamate [20941 -65-5] [(C2H3)2NC(S)S]4Te, is made by the reaction of diethylarnine, carbon disulfide, and tellurium dioxide in an alcohoHc solution. 

Tellurium-containing donors, synthesis and manufacture of, 22 212 Tellurium-copper alloys, 24 425-426 Tellurium crystals, 24 405-406 Tellurium decafluoride, 24 419 Tellurium dibromide, 24 420 Tellurium dichloride, 24 419-420 Tellurium diethyldithiocarbamate, 24 411 Tellurium dimethylthiocarbamate, 24 428 Tellurium dioxide, 24 407-408, 409, 411, 420, 428... 

Metal Coatings. Tellurium chlorides, as well as tellurium dioxide in hydrochloric acid solution, impart permanent and attractive black antique finish to silverware, aluminum, and brass. Anodized aluminum is colored dark gold by tellurium electro deposition. A solution containing sodium tellurate and copper ions forms a black or blue-black coating on ferrous and nonferrous metals and alloys. Addition of sodium tellurite improves the corrosion resistance of electroplated nickel. Tellurium diethyldithiocarbamate is an additive in bright copper electroplating (see Electroplating). 

Ethyl Tellurac . [R.T. Vandeitilt] Tellurium diethyldithiocarbamate ultra acceloator for rubbers. 

Figure 10.46 Tellurium diethyldithiocarbamate (TeDEC) is produced from diethyl amine, carbon disulfide, and a tellurium salt...

Tellurium diethyldithiocarbamate TeDEC (official ASTM abbreviation) TDEC... 

Selenium is extracted as diethyldithiocarbamate complex from the solution containing citrate and EDTA [5]. Ohta and Suzuki [6] found that only a few elements, such as copper, bismuth, arsenic, antimony, and tellurium, are also extracted together with selenium. They examined this for effects of hundredfold amounts of elements co-extracted with the selenium diethyldithiocarbamate complex. An appreciable improvement of interferences from diverse elements was observed in the presence of copper. Silver depressed the selenium absorption in the case of atomisation of diethyldithiocarbamate complex, but the interference of silver was suppressed in the presence of copper. The atomisation profile from diethyldithiocarbamate complex was identical with that from selenide. 

Tellurium Bis[diethyldithiocarbamate]6 2.18 g (5.0 mmol) of disodium tellurapentathionate dihydrate are dissolved in 100 m/ of water, stirred, and 50 ml of a 0.3 molar aqueous solution (15 mmol) of sodium diethyldithiocarbamate are added. The reaction mixture, which now contains a flesh-colorcd precipitate, is stirred for 5 min, and filtered. The solid is washed with water, dried over sulfuric acid under reduced pressure, and recrystallized from carbon disulfide/diethyl ether yield 2.11 g (99%) m.p. 164°. 

Tellurium Bis[A ,A-diethyldithiocarbamate] 0.92 g (2.5 mmol) of tellurium bis[0-ethyl dithiocarbonate] are dissolved in 20 ml of chloroform, 0.89 g (6.25 mmoi) of sodium A. A -dimethyldithiocarbamate dissolved in 15 m/of methanol are added and the resultant mixture is filtered. The solid is washed in sequence with diethyl ether, methanol, and diethyl ether, and dried over sulfuric acid yield 0.93 g (100%). 

When solutions of tellurium bis[diethyldithiocarbamate] and sodium dimethyldithiocarbamate or sodium pentamethylenedithiocarbamate in methanol are mixed, the less soluble dimethyl or pentamethylene derivative precipitates. To drive the reaction to completion an excess of the sodium dithiocarbamate is required3-4. 

Tellurium bis[bis(2-hydroxycthyl)dithiocarbamate] and sodium diethyldithiocarbamate similarly produced tellurium bis[diethyidithiocarbamate 1. 

When heated, solutions of tellurium tetrakis[dicthyldithiocarbamate] decomposed to tellurium bis[diethyldithiocarbamate] and bis[diethylcarbamyl] disulfide2,3. 

Tellurium bis[diethyldithiocarbamate] does not react with bis[diethylcarbamyl] disulfide to reform tellurium tetrakis[diethyldithiocarbamate]4. 

Thallium(I) diethyldithiocarbamate reduces tellurium tetrakis[diethyldithiocarbamate] in benzene or carbon tetrachloride solution to tellurium bis diethyIdithiocarhamate]1. ... 

Addition of sodium diethyldithiocarbamate to methanolic solutions of tellurium tetrakis[bis(2-hydroxyethyl)dithiocarbamate] readily yielded the benzene-extractable tellurium tetrakis[diethyldithiocarbamate]1. 

Thallium diethyldithiocarbamate reduced tellurium tetrakis[diethyldithiocarbamate] to tellurium bis[diethyldithiocarbamate]4. 

When tellurium tetrachloride and sodium diethyldithiocarbamate (1 2 molar ratio) reacted in ethanol2 or dioxane3, tellurium tris[diethyldithiocarhamate] chloride was formed. 

Tellurium Tris[dicthyldithiocarbamate] Chloride1 At 20° a solution of 0.67 g (2.5 mmol) of tellurium tetrachloride in 100 ml of ethanol is added dropwise to a solution of 1.3 g of sodium diethyldithiocarbamate trihydrate in 50 ml of ethanol. The mixture is allowed to stand overnight and is then heated to 50°. The warm mixture is filtered, the filtrate is covered with a layer of petroleum ether, and the crystals, which are formed after a few days, are collected yield 1.1 g (73%) m.p. 136° (ethanol). 

Sodium diethyldithiocarbamate converted tellurium tris[dithiocarbamate] halides to tellurium tetrakisfdiethyldithiocarbamate]2,3. 

Tellurium bis[dithiocarbamate] diiodides reacted with sodium diethyldithiocarbamate to form tellurium tetrakis[diethyldithiocarbamate]1,2. 

Metathetical reactions between aryl tellurium trichlorides and lead(ll) diethyldithiocarb-amates in dry benzene yielded aryl tellurium tris[diethyldithiocarbamates]4. 

The reaction of aryl tellurium trichlorides and lead diethyldithiocarbamate in dry benzene produced aryl tellurium tris[diethyldithiocarbamates]2,6. 

Phenyl tellurium bis[diethyldithiocarbamate] chloride and potassium 0,0-diethyl dithio-phosphate reacted in dichloromethane with exchange of chloride for dithiophosphate2. 

Phenyl tellurium Bis[diethyldithiocarbamate] 0,0-Diethyl Dithiophosphate2 To a solution of 1.91 g (4.0 mmol) of phenyl tellurium bisfdiethyldithiocarbamate] chloride in dichloromethane are added 0.90 g (4.0 mmol) of potassium 0,0-dielhyl dithiophosphate. The mixture is stirred for 2 h and then filtered. The filtrate is taken to dryness. The yellow residue is recrystallized from dichloromethane/hexane by slow evaporation m.p. 149-151° (dec.). 

After several hours, tellurium bis[diethyldithiocarbamate] and methyl iodide in dichloromethane produced methyl tellurium bis[diethyldithiocarbamate] iodide2. 

Phenyl tellurium trichloride (1 mol) and sodium diethyldithioearbamatc (2 mol) in dichloromethane yielded, in a rapid reaction, phenyl tellurium bis[diethyldithiocarbamate] chloride1. 

SYNS DIETHYLDITHIOCARBAMIC ACID TELLURIUM SALT NCI-C02857 TELLURIUM DIETHYLDI-THIOCARBAMATE TETRAKIS(DIETHYLCARBAMO-... 

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