Protonation and concerted proton-electron transfer reactivity of a bis-benzimidazolate ligated [2Fe-2S] model for Rieske clusters.
Protonation and concerted proton-electron transfer reactivity of a bis-benzimidazolate ligated [2Fe-2S] model for Rieske clusters.
复制标题
DOI:
10.1021/ja3019324
复制
发表时间:
2012-05-02
影响因子:
15
通讯作者:
Mayer, James M.
中科院分区:
文献类型:
--
作者:
Saouma, Caroline T.;Kaminsky, Werner;Mayer, James M.
A model system for biological Rieske clusters that incorporates bis-benzimidazolate ligands (Prbbim)2- has been developed (PrbbimH2 = 4,4-bis(benzimidazol-2-yl)heptane). The di-ferric and mixed-valence clusters have been prepared and characterized in both their protonated and deprotonated states. The thermochemistry of interconversions of these species has been measured, and the effect of protonation on the reduction potential is in good agreement to that observed in the biological systems. The mixed-valence and protonated congener [Fe2S2(Prbbim)(PrbbimH)](Et4N)2 (4) reacts rapidly with TEMPO or p-benzoquinones to generate di-ferric and deprotonated [Fe2S2(Prbbim)2](Et4N)2 (1) and 1 equiv of TEMPOH or 0.5 equiv p-benzohydroquinones, respectively. The reaction with TEMPO is the first well-defined example of a concerted proton-electron transfer (CPET) at a synthetic ferric/ferrous [Fe-S] cluster.
登录
查看更多内容
影响因子:
20.6
作者:
Henderson, RA
通讯作者:
Henderson, RA
影响因子:
4.4
作者:
DING, XQ;BILL, E;GIBSON, JF
通讯作者:
GIBSON, JF
影响因子:
15
作者:
Cape, JL;Bowman, MK;Kramer, DM
通讯作者:
Kramer, DM
影响因子:
16.6
作者:
Albers, Antonia;Demeshko, Serhiy;Meyer, Franc
通讯作者:
Meyer, Franc
影响因子:
15
作者:
Olsen, Matthew T.;Rauchfuss, Thomas B.;Wilson, Scott R.
通讯作者:
Wilson, Scott R.