Cyanide-Bridged Iron(II,III) Cube with Multistepped Redox Behavior

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• 作者：Masayuki Nihei ; Mayumi Ui ; Norihisa Hoshino ; Hiroki Oshio
• 刊名：Inorganic Chemistry
• 出版年：2008
• 出版时间：July 21, 2008
• 年：2008
• 卷：47
• 期：14
• 页码：6106 - 6108
• 全文大小：865K
• 年卷期：v.47,no.14(July 21, 2008)
• ISSN：1520-510X

文摘

A building unit of Prussian blue was isolated as a cyanide-bridged iron cube of [Fe^II₄Fe^III₄(CN)₁₂(tp)₈]·12DMF·2Et₂O·4H₂O [tp⁻ = hydrotris(pyrazolyl)borate]. A cyclic voltammogram showed quasi-reversible four-stepped redox waves, which correspond to [Fe^III₄Fe^II₄]/[Fe^III₅Fe^II₃]⁺, [Fe^III₅Fe^II₃]⁺/[Fe^III₆Fe^II₂]²⁺, [Fe^III₆Fe^II₂]²⁺/[Fe^III₇Fe^II₁]³⁺, and [Fe^III₇Fe^II₁]³⁺/[Fe^III₈]⁴⁺ processes. Controlled potential absorption spectral measurements revealed two intervalence charge-transfer bands at 816 and 1000 nm, which were assigned to charge transfers from Fe^II ions to adjacent and remote Fe^III ions, respectively, in the cube.