Kinetic Investigation of the Reaction of Octacarbonyl Dicobalt with 2,2,6,6-Tetramethylpiperidin-1-oxyl

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Abstract

The initial rate of carbon monoxide evolution in the reaction of octacarbonyl dicobalt with 2,2,6,6-tetramethylpiperidin-1-oxyl free radical (TEMPO) at 15°C in n-octane solution leading to the 16e complex (TEMPO)Co(CO)2 was found to be first order with respect to the TEMPO concentration, 0.5 order with respect to the Co2(CO)8 concentration, and negative 0.5 order with respect to the CO concentration. Scavenging •Co(CO)4 and •Co(CO)3 by the free radical TEMPO in the rate-determining steps are in accord with the kinetic observation. The observed rate constant is kobs = 6.4 x 10-5 s-1.

Original languageEnglish
Pages (from-to)289-294
Number of pages6
JournalJournal of Cluster Science
Volume9
Issue number3
DOIs
Publication statusPublished - Jan 1 1998

Keywords

  • 2,2,6,6-tetramethylpiperidin-1-oxyl
  • Kinetics of carbon monoxide evolution
  • Octacarbonyl dicobalt

ASJC Scopus subject areas

  • Biochemistry
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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