How important is parallel-mode EPR in electron spin echo envelope modulation studies of non-Kramers systems?

Peter E. Doan, Brian M. Hoffman*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

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 languageEnglish (US)
Pages (from-to)400-403
Number of pages4
JournalInorganica Chimica Acta
Volume297
Issue number1-2
DOIs
StatePublished - 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

Fingerprint Dive into the research topics of 'How important is parallel-mode EPR in electron spin echo envelope modulation studies of non-Kramers systems?'. Together they form a unique fingerprint.

Cite this