Comparison between the inter- and intra-molecular kinetics of reduction of penta-ammine(ligand)cobalt(III) complexes by the para-nitrobenzoate radical: A pulse-radiolytic study

Haim Cohen, Dan Meyerstein

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12 Scopus citations

Abstract

Second-order rate constants for reduction by the p-nitrobenzoate radical of the complexes [CoIII(NH3)5X] [X = NH3, PhCO2-, p-O2NC6H4CO2-, Br-, pyridine (py), and m-H2NCOC5H4N] have been measured and are in the range 105-107 I mol-1 s-1. The rates of the first three reactions are considerably faster than those expected from the intramolecular rate of electron transfer in [CoIII(NH3)5(O2CC6H 4NO2-p)]+ and suggest poor 'electron permeability' of the carboxylate group.

Original languageEnglish
Pages (from-to)2477-2479
Number of pages3
JournalJournal of the Chemical Society. Dalton Transactions
Issue number23
DOIs
StatePublished - 1 Dec 1975
Externally publishedYes

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