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| Section2 = | Section3 = }} Potassium octachlorodimolybdate (systematically named potassium bis(tetrachloridomolybdate)(''Mo''—''Mo'')(4−)) is an inorganic compound with the chemical formula (also written as ). It is known as a red-coloured, microcrystalline solid. The anion is of historic interest as one of the earliest illustrations of a quadruple bonding. The salt is usually obtained as the pink-coloured dihydrate. The compound is prepared in two steps from molybdenum hexacarbonyl: :2 Mo(CO)6 + 4 HO2CCH3 → Mo2(O2CCH3)4 + 2 H2 + 12 CO :Mo2(O2CCH3)4 + 4 HCl + 4 KCl → K4Mo2Cl8 + 4 HO2CCH3 The reaction of the acetate with HCl was first described as providing trimolybdenum compounds, but subsequent crystallographic analysis confirmed that the product contains the ion with D4h symmetry. The Mo—Mo distance is 2.14 Å. ==References== 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「potassium octachlorodimolybdate」の詳細全文を読む スポンサード リンク
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