Solvent effects of ESR spectra of neutral nitroxide free radicals. I. Localized solvent-radical adducts in mixtures

S. A. Abdel-Monem, A. Rockenbauer, F. Tüdo

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Secondary butyl phenyl nitroxide and isopentyl phenyl nitroxide radicals were synthesized and studied by ESR spectroscopy in DMF-ethanol, DMF-water and ethanol-water solvent mixtures. The variation of the nitrogen hf constant and g values were interpreted by rapid interconversion between three solvent-radical (SR) complexes, among which the mixed RS1S2 adduct was found more stable than the RS12 and RS22 adducts. The complex forming abilities vary in the following order; water > ethanol > DMF.

Original languageEnglish
Pages (from-to)207-212
Number of pages6
JournalAdvances in Molecular Relaxation and Interaction Processes
Volume15
Issue number3
DOIs
Publication statusPublished - 1979

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Free radicals
free radicals
adducts
Free Radicals
Paramagnetic resonance
Ethanol
ethyl alcohol
Water
water
Nitrogen
Spectroscopy
nitrogen
spectroscopy

Cite this

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abstract = "Secondary butyl phenyl nitroxide and isopentyl phenyl nitroxide radicals were synthesized and studied by ESR spectroscopy in DMF-ethanol, DMF-water and ethanol-water solvent mixtures. The variation of the nitrogen hf constant and g values were interpreted by rapid interconversion between three solvent-radical (SR) complexes, among which the mixed RS1S2 adduct was found more stable than the RS12 and RS22 adducts. The complex forming abilities vary in the following order; water > ethanol > DMF.",
author = "Abdel-Monem, {S. A.} and A. Rockenbauer and F. T{\"u}do",
year = "1979",
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AU - Abdel-Monem, S. A.

AU - Rockenbauer, A.

AU - Tüdo, F.

PY - 1979

Y1 - 1979

N2 - Secondary butyl phenyl nitroxide and isopentyl phenyl nitroxide radicals were synthesized and studied by ESR spectroscopy in DMF-ethanol, DMF-water and ethanol-water solvent mixtures. The variation of the nitrogen hf constant and g values were interpreted by rapid interconversion between three solvent-radical (SR) complexes, among which the mixed RS1S2 adduct was found more stable than the RS12 and RS22 adducts. The complex forming abilities vary in the following order; water > ethanol > DMF.

AB - Secondary butyl phenyl nitroxide and isopentyl phenyl nitroxide radicals were synthesized and studied by ESR spectroscopy in DMF-ethanol, DMF-water and ethanol-water solvent mixtures. The variation of the nitrogen hf constant and g values were interpreted by rapid interconversion between three solvent-radical (SR) complexes, among which the mixed RS1S2 adduct was found more stable than the RS12 and RS22 adducts. The complex forming abilities vary in the following order; water > ethanol > DMF.

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