Worksheet: Electron Paramagnetic Resonance Spectra

In this worksheet, we will practice describing sample preparation and data analysis methods in electron paramagnetic resonance (EPR) spectroscopy.


Which of the following cannot be studied by EPR?

  • AFree radicals in the solid state
  • BParamagnetic transition metal complexes
  • CFree radicals in the liquid or gas state
  • DDiamagnetic transition metal complexes
  • EComplexes containing more than one unpaired electron


Which of the following radicals is most likely responsible for the EPR spectrum shown?

  • A C H C l 2
  • B N O 2
  • C C H C H 2 2
  • D C H 3
  • E O H

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