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|Section7=}} Molybdic acid refers to solid, hydrated forms of molybdenum trioxide and species in aqueous solution. The simplest solid form, the monohydrate, is MoO3·H2O, though the dihydrate (MoO3·2H2O) is also known. The solid state structure of MoO3·H2O consists of layers of octahedrally coordinated MoO5·(H2O) units where 4 vertices are shared.〔Wells A.F. (1984) ''Structural Inorganic Chemistry'' 5th edition Oxford Science Publications ISBN 0-19-855370-6〕 The dihydrate has the same layer structure with the extra H2O molecule intercalated between the layers. In aqueous solutions of acidified molybdate salts low concentration molecular O3Mo·3H2O has been characterised spectroscopically.〔Solution structure of molybdic acid from Raman spectroscopy and DFT analysis, Oyerindea O.F., Week C.L., Anbarb A.D., Spiro T.G. Inorganica Chimica Acta, 361, 4, (2008), 1000-1007, 〕 The salts of molybdic acid are called molybdates. Molybdic acid and its salts are used to make the Froehde reagent for the presumptive identification of alkaloids. ==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「molybdic acid」の詳細全文を読む スポンサード リンク
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