EPR as a Tool to Study Isolated and Coupled Paramagnetic Centers in Coordination Compounds and Macromolecules of Biological Interest

ALBERTO C. RIZZI; NICOLÁS I. NEUMAN; PABLO J. GONZÁLEZ; CARLOS D. BRONDINO

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY

WILEY-V C H VERLAG GMBH

Lugar: Weinheim; Año: 2016 p. 192 - 207

1434-1948

Continuous Wave Electron Paramagnetic Resonance(CW EPR) is an essential spectroscopic tool to study systems containingunpaired electrons. The potential capability of the technique has exceeded itsuse solely by experts, and today is widely used by non-specialists. In thismicroreview we presentselected examples together with basic theoretical aspects necessary tounderstand the EPR properties of isolated paramagnetic centers and assemblies ofthem which may be coupled by very weak isotropic exchange interactions (<0.1 cm-1) when linked by diamagnetic extended chemical pathways. The goal of the paper is to show in a unifiedway the information that CW EPR can provide to the understanding of theelectronic structure and magnetic properties of distinct types of paramagnetic transitionmetal ion-containing systems of biological relevance such as low molecularweight inorganic complexes and metalloproteins.