Electrochemical generation of a nonheme oxoiron(IV) complex
Electrochemical generation of a nonheme oxoiron(IV) complex
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DOI：
10.1021/ic061263i
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发表时间：
2006-10-02
影响因子：
4.6
通讯作者：
Que, Lawrence, Jr.
中科院分区：
文献类型：
--
作者：
Collins, Michael J.;Ray, Kallol;Que, Lawrence, Jr.
在CH3CN和CH2Cl2水溶液中，采用本体电解法合成了配合物[(FeO)-O-IV(N4Py)](2+)(N4Py=N，N-双(2-吡啶甲基)-N-双(2-吡啶)甲胺)，并对其氧化还原性能进行了表征。在CH3CN中的体相计时库仑和光谱电位实验表明，[Fe-II(N4Py)(NCCH3)](2+)能在+0.71V对二茂铁的作用下被定量氧化成其铁(III)衍生物，然后在+1.3V以上的电位下被氧化成氧化铁(IV)的络合物。
The complex [(FeO)-O-IV(N4Py)](2+) (N4Py = N,N-bis(2-pyridylmethyl)-N-bis(2- pyridyl)methylamine) has been prepared by bulk electrolysis in aqueous CH3CN and CH2Cl2, and its redox properties characterized. Bulk chronocoulometry and spectropotentiometry experiments in CH3CN show that [Fe-II(N4Py)(NCCH3)](2+) can be oxidized quantitatively to its iron(III) derivative at an applied potential of +0.71 V vs ferrocene and then to the oxoiron(IV) complex (in the presence of added water) at potentials above +1.3 V. The E-1/2 value for the Fe-IV/III couple has been estimated to be + 0.90 V from spectropotentiometric titrations in CH3CN and cyclic voltammetric measurements in CH2Cl2.