One-electron redox potentials of phenols. Hydroxy- and aminophenols and related compounds of biological interest

Journal Article · Fri Jan 01 04:00:00 EST 1982 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100215a033· OSTI ID:6377892

Steenken, S ^[1]; Neta, P

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1. Max-Planck-Institut fuer Strahlenchemie, Muelheim, Germany

The rate constants for reversible electron transfer between a series of substituted phenolate ions and anilines and various substituted phenoxyl or anilino radicals in aqueous solution were measured by observing the formation or depletion of the radicals involved. Nonequilibrium concentrations of the radicals were produced in the presence of the corresponding phenols or anilines by using the pulse radiolysis technique. The relaxation of the system to equilibrium was monitored by optical detection methods. From the equilibrium constants for one-electron transfer, the one-electron redox potentials (E/sup 2/) for 38 phenolic or anilino type compounds were determined, many of which are natural products. The redox potentials are strongly influenced by electron-donating or -withdrawing substituents at the aromatic system.

• OSTI ID: 6377892
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Journal Issue: 18 Vol. 86; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600 -- Radiation Chemistry
550200* -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
AMINES
ANILINE
AQUEOUS SOLUTIONS
AROMATICS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DISPERSIONS
ELECTRON TRANSFER
KINETICS
MIXTURES
ORGANIC COMPOUNDS
PHENOLATES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADICALS
RADIOLYSIS
REACTION KINETICS
REDOX POTENTIAL
SOLUTIONS