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In chemistry a molybdate is a compound containing an oxoanion with molybdenum in its highest oxidation state of 6. Molybdenum can form a very large range of such oxoanions which can be discrete structures or polymeric extended structures, although the latter are only found in the solid state.The larger oxoanions are members of group of compounds termed polyoxometalates, and because they contain only one type of metal atom are often called isopolymetalates. The discrete molybdenum oxoanions range in size from the simplest MoO42 ==Examples of molybdate anions== Examples of molybdate oxoanions are: *MoO42−, in e.g. Na2MoO4 and the mineral powellite, CaMoO4; *Mo2O72−, as hydrated diammonium dimolybdate. The anhydrous tetrabutylammonium salt of Mo2O72− is also known; *Mo3O102− in the ethylenediamine salt; *Mo4O132− in the potassium salt; *Mo5O162− in the anilinium, (C6H5NH3)+ salt; *Mo6O192−(hexa-molybdate) in the tetramethylammonium salt; *Mo7O246− in ammonium molybdate, (NH4)6Mo7O24.4H2O; *Mo8O264− in trimethylammonium salt.〔 The naming of molybdates generally follows the convention of a prefix to show the number of Mo atoms present. For example, ''dimolybdate'' for 2 molybdenum atoms; ''trimolybdate'' for 3 molybdenum atoms, etc.. Sometimes the oxidation state is added as a suffix, such as in ''pentamolybdate(VI)''. The heptamolybdate ion, Mo7O24 6−, is often called "paramolybdate". 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「Molybdate」の詳細全文を読む スポンサード リンク
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