化学
苯醌
对苯二酚
水溶液
电子转移
质子化
电化学
单电子还原
水介质
光化学
1,4-苯醌
还原(数学)
醌
离子
无机化学
电极
立体化学
物理化学
有机化学
数学
几何学
作者
Yoon‐Bo Shim,Su‐Moon Park
标识
DOI:10.1016/s0022-0728(96)04956-x
摘要
p-Benzoquinone reduction has been studied in aqueous solutions employing spectroelectrochemical techniques, and an intermediate species thus far believed to be unstable in aqueous media has been shown to be reasonably stable in unbuffered solutions. The detection of this intermediate species, which is produced as a one-electron transfer product, i.e. anion radical, suggests that the e−H+e−H+ mechanism, in which e− and H+ represent electron transfer and protonation steps respectively, is a major reaction pathway during the electrochemical reduction of benzoquinone to the final product, hydroquinone, in unbufferred solutions. In buffered solutions, however, p-benzoquinone reduction is a two-electron process, as has been well known. A few anomalies discovered during the reduction of p-benzoquinone in aqueous media are discussed.
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