Oxygen-Centered Spin Adducts of 5,5-Dimethyl-1-pyrrolineN-oxide (DMPO) and 2H-Imidazole 1-Oxides

The hydroxyl and some alkoxyl spin adducts of 5,5-dimethyl-1-pyrroline 1-oxide are difficult to assign due to the remarkable similarity of their EPR spectra

Arkadi G. Krainev; Todd D. Williams; Diana J. Bigelow

2002

Scholarcy highlights

  • The hydroxyl and some alkoxyl spin adducts of 5,5-dimethyl-1-pyrroline 1-oxide are difficult to assign due to the remarkable similarity of their EPR spectra
  • Two other spin traps, derivatives of 2H-imidazole 1-oxide, namely, 2,2,4-trimethyl-2H-imidazole 1-oxide and 2,2-dimethyl-4-phenyl-2H-imidazole 1-oxide, have been used in a model study to develop a procedure for distinguishing between oxygen-centered spin adducts
  • The comparison of spin trapping by DMPO and 2H-imidazole 1-oxides using typical biological sources of other oxygen-centered radicals reveals application limits of these spin traps
  • For the first time, experimental evidence is presented for SHF structure in spectra of TMIO and DMPIO spin adducts with·OH/·OD and·CH3/·CD3radical species
  • For the first time, experimental evidence is presented for SHF structure in spectra of trimethyl-2H-imidazole 1-oxide and dimethyl-4-phenyl-2H-imidazole 1-oxide spin adducts with·OH/·OD and·CH3/·CD3radical species

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