Electron transfer between atomic hydrogen and cobalt (III) complexes in aqueous solution

Gil Navon*, Gabriel Stein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The reaction of atomic hydrogen, produced by an electrodeless high-frequency discharge, with some complex ions of the type CoIII(NH3)5X was studied in aqueous solutions. The rate constants for the reduction of the complex ions with X = NH3, H2O, OH-, F-, Cl-, Br-, and I- were found to be ks = 1.85 × 106, 4.5 × 105, 3.1 × 107, 1.1 × 106, 7.3 × 107, 4.6 × 108, and 3.3 × 109 1. mole-1 sec.-1, respectively. Through comparison between the rates of these reactions and the rates of other known analogous reactions, probable mechanisms are proposed. Assuming the validity of Marcus' electron-transfer reaction theory, the H-Haq+ isotopic exchange rate was estimated.

Original languageEnglish
Pages (from-to)1390-1394
Number of pages5
JournalJournal of Physical Chemistry
Volume69
Issue number4
DOIs
StatePublished - 1965
Externally publishedYes

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