Telluride

from Wikipedia, the free encyclopedia

Tellurides are chemical compounds, in inorganic chemistry salts of tellurium hydrogen . They are compounds of tellurium and homologous to the selenides and sulfides , which can be derived from the lighter elements selenium and sulfur .

Inorganic chemistry

Alkali metal tellurides can be obtained by direct synthesis from the elements, liquid ammonia being recommended as the reaction medium. These compounds are soluble in water and colorless. They are also unstable in air and are oxidized to elemental tellurium.

Tellurides of the transition metals can also be produced from the elements under inert gas . Tellurides occur in nature in the form of different minerals .

Organic chemistry

In organic chemistry , compounds with the general structural formula R 1 −Te − R 2 (R 1 , R 2 = alkyl or aryl radicals) are also referred to as tellurides. The tellurides can also be regarded as telluro analogues of ethers R 1 −O − R 2 , sulfides n R 1 −S − R 2 and selenides R 1 −Se − R 2 . In symmetrical tellurides, the organic radicals R 1 and R 2 are the same (R 1 = R 2 ), in asymmetrical tellurides, R 1 and R 2 are different (R 1 ≠ R 2 ).

Individual evidence

  1. ^ A b N. N. Greenwood, A. Earnshaw: Chemistry of the elements. VCH, Weinheim 1988, ISBN 3-527-26169-9 , pp. 994-995.