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|Section2= |Section3= |Section7= |Section8= }} Disodium tetracarbonylferrate is the organometallic compound with the formula Na2(). This oxygen-sensitive colourless solid is employed in organic synthesis, mainly to synthesise aldehydes. It is commonly used with dioxane complexed to the sodium cation, this dioxane solvate being known as Collman's reagent. The tetracarbonylferrate dianion is tetrahedral. ==Synthesis== The reagent was reported by Cooke in 1970. The current synthesis entails the reduction of a solution of iron pentacarbonyl in tetrahydrofuran by sodium naphthenide. The efficiency of the synthesis depends on the quality of the iron pentacarbonyl.〔 :Fe(CO)5 + 2 Na → Na2() + CO When a deficiency of sodium is used, the reduction affords octacarbonyl diferrate:〔 :2 Fe(CO)5 + 2 Na → Na2() + 2 CO Other synthesis forms to make Collman's Reagent from Fe(CO)5 are listed below. :Fe(CO)5 + Na-Hg +THF → Na2() :Fe(CO)5 + Na + Dioxane + PhCOPh → Na2() :Fe(CO)5 + Na/PhCOPh + THF → Na2() Another way to synthesize Collman's Reagent is to use FeCl3. :FeCl3 + Na(C10H8) + 4CO + THF → +Na → Na2() These synthesis pathways are extremely useful in preparing Collman's Reagent if the typical reagents to make it are not available. 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「Disodium tetracarbonylferrate」の詳細全文を読む スポンサード リンク
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