Quinone 1 e^- and 2 e^-/2 H⁺ Reduction Potentials: Identification and Analysis of Deviations from Systematic Scaling Relationships.

ABSTRACT: Quinones participate in diverse electron transfer and proton-coupled electron transfer processes in chemistry and biology. To understand the relationship between these redox processes, an experimental study was carried out to probe the 1 e^- and 2 e^-/2 H⁺ reduction potentials of a number of common quinones. The results reveal a non-linear correlation between the 1 e^- and 2 e^-/2 H⁺ reduction potentials. This unexpected observation prompted a computational study of 134 different quinones, probing their 1 e^- reduction potentials, pK_a values, and 2 e^-/2 H⁺ reduction potentials. The density functional theory calculations reveal an approximately linear correlation between these three prop

SUBMITTER: Huynh MT 

PROVIDER: S-EPMC6206872 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature