Abstract
Integer-spin systems with S > 1 sometimes exhibit a ground-state 'non-Kramers (NK) doublet' in their electron paramagnetic resonance (EPR) spectra. The preferred method of studying systems with this type of EPR signal has been to use a spectrometer in which the microwave field is parallel to the applied static field (parallel-mode EPR), rather than a traditional perpendicular-mode EPR spectrometer, in order to maximize the resulting NK-EPR signal. The efficacy of parallel and perpendicular mode electron spin echo envelope modulation (ESEEM) spectroscopy on the NK doublet of azido-hemerythrin (N3Hr(red)) are compared. These results demonstrate that for this technique, the advantages of parallel-mode over perpendicular-mode ESEEM are minimal at best. A simplified form of the theory underlying the analysis of NK-ESEEM is developed to explain the observations. (C) 2000 Elsevier Science S.A.
Original language | English (US) |
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Pages (from-to) | 400-403 |
Number of pages | 4 |
Journal | Inorganica Chimica Acta |
Volume | 297 |
Issue number | 1-2 |
DOIs | |
State | Published - 2000 |
Keywords
- Azido-hemerythrin
- Electron paramagnetic resonance
- Electron spin envelope modulation
- Non-Kramers
- Parallel-mode
- Theory
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Inorganic Chemistry
- Materials Chemistry