Measurement of a CuCu Distance of 26 Å by a Pulsed EPR Method

Abstract

Distances between paramagnetic transition-metal ions in compounds can be studied by using the pulsed electron–electron double-resonance method. Hereby, the relative orientation (red arrow) of the metal centers (CuII, blue sphere), as well as the principal axes of the g tensor (green arrows) relative to the ligands play an important role (schematic representation: dimer of the copper protein azurin).