The mflucnce of thepH on EPR spectra of nltroxyl radicals was studled Ilypcrfinc sphttlnf constants (ON) sndg factors differ m protonsted (RH') and non-protonakd (R) forms. Proton exchange rates bctwccn R and RH+arc fast or SIOW on the EPR time scale. dcpcndmg on the rachnlpK, These rxhals may be us
Proton exchange in stable nitroxyl radicals. EPR study of the pH of aqueous solutions
β Scribed by V.V. Khramtsov; L.M. Weiner; L.A. Grigoriev; L.B. Volodarsky
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 51 KB
- Volume
- 92
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
trbx ~&elf. If thus is so, rt extends the range of surfaceenhanced techmques to msoluble as well as soluble speties. in any event, there is no evidence of chermcai reactron on pressing the discs, and they are robust and easily handled so that hip-resolutton Raman spectra of insoluble copper phthalocyanmes are now accessrble by this sample evtensron to existmg techniques.
~~now!~gement
Counctl and CrbaGeigy UK Ltd. for a CASE award to one of us (JAN) and Dr. IA. Macpherson and Dr. J. Coy of CrbaGeigy UK, Ltd., for helpful discussion.
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The longitudinal relaxation rate of the first stable alanine radical, SAR1, was studied by employing pulse EPR technique over a wide temperature interval (5-290 K). The complex nonexponential recovery of the longitudinal magnetization in this temperature interval has been described with two characte
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