Carbon Sulfide Telluride

Tellur-sfiure, /. telluric acid, -schwefelkohlen-stoff, m. carbon sulfide telluride, CSTe. -sil-ber, n. silver telluride. -silberblei, n. lead silver telluride, Min.) sylvanite. -silber-blende,/. sylvanite stutzite. 

The thermally very unstable carbon sulfide telluride is a yellow-reddish solid that melts at — 54° to a red liquid. The red liquid rapidely decomposes (even in the absence of air) at 20° to a black, non-volatile substance. Solutions were observed to decompose similarly. Carbon disulfide was identified as one of the decomposition products. Light accelerated the decomposition of dissolved carbon sulfide telluride3. 

Carbon sulfide telluride was prepared by allowing a direct-current arc to burn between a graphite and a graphite/tellurium electrode. The electrodes were immersed into carbon disulfide kept at 0°3-5. 

Carbon sulfide telluride CSTe 10340-06-4 171.68 red-yel liq unstab -64 20 dec reac HjO... 

Carbon Oxid Telluride/Sulfid Telluride/Selenid Telluride etc. 

Binary Selenides. Most binary selenides are formed by heating selenium in the presence of the element, reduction of selenites or selenates with carbon or hydrogen, and double decomposition of heavy-metal salts in aqueous solution or suspension with a soluble selenide salt, eg, Na2Se or (NH Se [66455-76-3]. Atmospheric oxygen oxidizes the selenides more rapidly than the corresponding sulfides and more slowly than the tellurides. Selenides of the alkali, alkaline-earth metals, and lanthanum elements are water soluble and readily hydrolyzed. Heavy-metal selenides are insoluble in water. Polyselenides form when selenium reacts with alkali metals dissolved in liquid ammonia. Metal (M) hydrogen selenides of the M HSe type are known. Some heavy-metal selenides show important and useful electric, photoelectric, photo-optical, and semiconductor properties. Ferroselenium and nickel selenide are made by sintering a mixture of selenium and metal powder. 

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