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| Section2 = | Section3 = }} The telluride ion is the anion Te2− and its derivatives. Telluride is member of the fifth period of the periodic table, containing the dianions O2−, S2−, and Se2− (see chalcogenide).〔Greenwood, N. N.; & Earnshaw, A. (1997). Chemistry of the Elements (2nd Edn.), Oxford:Butterworth-Heinemann. ISBN 0-7506-3365-4.〕 The telluride anion is formed from the reduction of the tellurium metal. The redox potential of pure Te metal is fairly negative, -1.14 V.〔("Standard Reduction Potentials ), Indiana University.〕 :Te(s) + 2 e− ↔ Te2− The acid hydride of tellurium, hydrogen telluride, H2Te, is unstable compound that decomposes to tellurium metal. It is strongly acidic, dissociating into hydrogen telluride ion (HTe−) in aqueous solutions. Like its sulfide and selenide counterparts, the Te2− anion only exists in aqueous solutions in basic conditions. ==Organic tellurides== ''Tellurides'' also describe a class of organotellurium compounds formally derived from Te2−. An illustrative member is dimethyl telluride, which results from the methylation of telluride salts: :2 CH3I + Na2Te → (CH3)2Te + 2 NaI Dimethyl telluride is formed by the body when tellurium is ingested . Such compounds are often called telluroethers because they are structurally related although the length of the C-Te bond is much longer than a C-O bond. C-Te-C angles tend to be closer to 90°.〔Reid, G., et al. ''Journal of Organometallic Chemistry'', 642 (2002) 186– 190.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Telluride (chemistry)」の詳細全文を読む スポンサード リンク
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