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|Section2= |Section3= |Section8= }} Ferrocenium tetrafluoroborate is an organometallic compound with the formula ()BF4. This salt is composed of the cation ()+ and the tetrafluoroborate anion (BF4−). The related hexafluorophosphate is also a popular reagent with similar properties. The cation is often abbreviated Fc+ or (Cp2Fe)+. The salt is deep blue in color and paramagnetic. Ferrocenium salts are sometimes used as one-electron oxidizing agents, and the reduced product, ferrocene, is inert and readily separated from ionic products. The ferrocene/ferrocenium couple is often used as a reference in electrochemistry. In acetonitrile solution that is 0.1 M in NBu4PF6, the Fc+/0 couple is +0.641 V with respect to the normal hydrogen electrode. ==Preparation== Commercially available, this compound may be prepared by oxidizing ferrocene typically with ferric salts followed by addition of fluoroboric acid.〔 A variety of other oxidants work well also, such as nitrosyl tetrafluoroborate. Many analogous ferrocenium salts are known.〔J. Le Bras, H. Jiao, W. E. Meyer, F. Hampel and J. A. Gladysz, "Synthesis, Crystal Structure, and Reactions of the 17-Valence-Electron Rhenium Methyl Complex ()+ B(3,5-C6H3(CF3)2)4−: Experimental and Computational Bonding Comparisons with 18-Electron Methyl and Methylidene Complexes", J. Organomet. Chem. 2000, vol. 616, p 54-66. 〕 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「ferrocenium tetrafluoroborate」の詳細全文を読む スポンサード リンク
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