The redox reactivity of transition metal centers can be augmented by nearby redox-active inorganic or organic moieties. In some cases, these functional groups can even allow a metal center to participate in reactions that were previously inaccessible to both the metal center and the functional group by themselves. Our research groups have been synthesizing and characterizing coordination complexes with polydentate quinol-containing ligands. Quinol is capable of being reversibly oxidized by either one or two electrons to semiquinone or para-quinone, respectively. Functionally, quinol behaves much differently than phenol, even though the pK_a values of the first O–H bonds are nearly identical.

中文翻译：

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使用分子内喹啉氧化还原偶联促进 O2 和 O2 衍生物质的催化转化


过渡金属中心的氧化还原反应性可以通过附近的氧化还原活性无机或有机部分来增强。在某些情况下，这些官能团甚至可以允许金属中心参与以前金属中心和官能团本身都无法接近的反应。我们的研究小组一直在合成和表征含有多齿喹醇配体的配位复合物。喹醇能够被一个或两个电子分别可逆地氧化成半醌或对醌。在功能上，喹醇的行为与苯酚大不相同，尽管第一个 O-H 键的 pK_a 值几乎相同。