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

Gil Navon; Gabriel Stein

doi:10.1021/j100888a049

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

Gil Navon^*, Gabriel Stein

^*Corresponding author for this work

Hebrew University of Jerusalem

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The reaction of atomic hydrogen, produced by an electrodeless high-frequency discharge, with some complex ions of the type Co^III(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 k_s = 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-H_aq⁺ isotopic exchange rate was estimated.

Original language	English
Pages (from-to)	1390-1394
Number of pages	5
Journal	Journal of Physical Chemistry
Volume	69
Issue number	4
DOIs	https://doi.org/10.1021/j100888a049
State	Published - 1965
Externally published	Yes

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title = "Electron transfer between atomic hydrogen and cobalt (III) complexes in aqueous solution",

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.",

author = "Gil Navon and Gabriel Stein",

year = "1965",

doi = "10.1021/j100888a049",

language = "אנגלית",

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pages = "1390--1394",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

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T1 - Electron transfer between atomic hydrogen and cobalt (III) complexes in aqueous solution

AU - Navon, Gil

AU - Stein, Gabriel

PY - 1965

Y1 - 1965

N2 - 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.

AB - 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.

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JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

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

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