Solvent effects on redox reactions. 1. chromium(II) reduction of tris(pentane-2,4-dionato)cobalt(III) in water/dimethylformamide solvent mixtures

Nita A. Lewis, Ananda M. Ray

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

The Cr(II) reduction of Co(ptdn)3 was studied in various dimethylformamide/water mixtures at μ = 1.00 M (CH3COOLi). The activation parameters were measured over a temperature range of 25-45°C. Three pathways for reduction were observed-outer sphere, monobridged inner sphere, and dibridged inner sphere. Only the dibridged pathway showed an acid dependence. The outer-sphere and monobridged inner-sphere routes followed simple second-order kinetics whereas the dibridged path showed evidence for the presence of a binuclear intermediate. It was postulated that the dibridged transition state was stabilized by an organic solvent cage.

Original languageEnglish (US)
Pages (from-to)3698-3704
Number of pages7
JournalInorganic Chemistry
Volume23
Issue number23
DOIs
StatePublished - Dec 1984
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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