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|Section2= |Section3= |Section7= |Section8= }} Triiron dodecarbonyl is the organoiron compound with the formula Fe3(CO)12. It is a dark green solid that sublimes under vacuum. It is soluble in nonpolar organic solvents to give intensely green solutions. Most low-nuclearity clusters are pale yellow or orange. Hot solutions of Fe3(CO)12 decompose to an iron mirror, which can be pyrophoric in air. The solid decomposes slowly in air, and thus samples are typically stored cold under an inert atmosphere.〔Elschenbroich, C.; Salzer, A. ”Organometallics: A Concise Introduction” (2nd Ed) (1992) from Wiley-VCH: Weinheim. ISBN 3-527-28165-7〕 It is a more reactive source of iron(0) than iron pentacarbonyl. ==Synthesis== It was one of the first metal carbonyl clusters synthesized. It was occasionally obtained from the thermolysis of Fe(CO)5: :3 Fe(CO)5 → Fe3(CO)12 + 3 CO Traces of the compound are easily detected because of its characteristic deep green colour. UV-photolysis of Fe(CO)5 produces Fe2(CO)9, not Fe3(CO)12. The usual synthesis of Fe3(CO)12 starts with the reaction of Fe(CO)5 with base: :3 Fe(CO)5 + (C2H5)3N + H2O → ()() + 3 CO + CO2 followed by oxidation of the resulting hydrido cluster with acid: : ()() + HCl + CO → Fe3(CO)12 + H2 + ()Cl The original synthesis by Walter Hieber et al. entailed the oxidation of H2Fe(CO)4 with MnO2. The cluster was originally formulated incorrectly as "Fe(CO)4". 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「Triiron dodecacarbonyl」の詳細全文を読む スポンサード リンク
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