Formation of an observable intermediate during the reduction of [Co (III)(NH3)5CN]2+ by ̇CR1R2(OH) radicals

Ronit Herscu-Kluska, Haim Cohen, Dan Meyerstein

Research output: Contribution to journalArticlepeer-review


̇CR1R2OH, Ri = CH 3 or H, react with the complex [CoIII(NH3) 5CN]2+ to form an observable intermediate probably via bonding to the nitrogen of the cyanide. This intermediate isomerizes to form a second intermediate. The second intermediate decomposes into Co 2+(aq), 5NH4+, CN- and R 1R2CO. The plausible structures of the intermediates are discussed. The radicals ̇CH3, ̇CH 2CHO, CH(OH)CO2-, CH2C(CH3)2OH,CO2- and CH3O2 are considerably less reactive towards this complex, the formation of intermediates in their presence is not observed.

Original languageEnglish
Pages (from-to)2821-2826
Number of pages6
JournalInorganica Chimica Acta
Issue number9
StatePublished - 1 Jun 2005
Externally publishedYes

Bibliographical note

Funding Information:
This study was supported in part by a grant from the Israel Atomic Energy Committee. D.M. expresses his thanks to Mrs. Irene Evens for her continuous interest and support.


  • Alkyl radicals
  • Cobalt complex
  • Pulse radiolysis


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