The first reduction processes for 1–4 occur at potentials in the range –0.82 to –1.13 V. The positive shift produced by benzimidazolate co-ordination compared to thiolate is comparable to that for the Rieske-type proteins relative to tetracysteinyl ferredoxins. Benzimidazolate co-ordination is also found considerably to stabilise the trianionic chemical reduction products. These display frozen-solution
配合物的[Fe 2小号2大号2 ] 2- 1-5具有以L配位体终端协调1 -L 5已经制备和研究了一系列的物理技术如型号为Rieske型蛋白[H 2大号1 = 2-(2-巯基苯基)
苯并咪唑; H 2 L 2= 2-(2-羟苯基)
苯并咪唑;H 2 L 3= 2-(2-羟苯基)甲基
苯并咪唑;H 2 L 4= 2,2-双(
苯并咪唑-2-基)
丙烷;H 2 L 4= 1。ħ 2大号5= 4,4-双(
苯并咪唑-2-基)
庚烷]。描述了[NEt 4 ] 3 [Fe 2 S 2 L 4 2 ] 6的制备方法,该方法是要分离的第一个[2Fe-2S] +还原络合物。该复合物已通过UV / VIS,1 H NMR和Mössbauer光谱学进行了表征。
铁(II)–
铁(III)配合物6的1 H NMR谱中缺乏不均一性,显示化合价。在莫斯鲍尔(Mössbauer)时间尺度上,随着温度的降低,复合物变成化合价。1-4的第