Spin trapping EPR investigation of the photolysis of aqua(alkyl)cobaloximes: 1,2-Rearrangement reactions of photo-induced primary radicals and β-cyclodextrin's stabilizing effects

Xinyi Song, Ying Chen, Huilan Chen

Research output: Contribution to journalArticlepeer-review

Abstract

The radicals formed from photolysis of aqua(alkyl)cobaloximes (R = sec-C4H9, n-C4H9, i-C4H9, c-C5H9 or c-C6H11) in the absence and presence of β-cyclodextrin at room temperature have been characterized by the EPR spin trapping technique using 2-methyl-2-nitrosopropane. It has been found that only the primary alkyl radicals produced by Co-C bond cleavage of the cobaloximes during photolysis undergo 1,2-rearrangement reactions. The spin adducts formed can be included in the cavity of β-cyclodextrin, which plays an important role in stabilizing the primary alkyl radicals.

Original languageEnglish (US)
Pages (from-to)985-988
Number of pages4
JournalNew Journal of Chemistry
Volume25
Issue number7
DOIs
StatePublished - Jan 1 2001

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Materials Chemistry

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