Communication
Measurement of a CuCu Distance of 26 Å by a Pulsed EPR Method†
†
We thank E. J. J. Groenen and J. Schmidt for enlightening discussions and support of this work. Contributions by S. S. Eaton, G. R. Eaton, and G. Jeschke are gratefully acknowledged. The work was performed under the auspices of the BIOMAC Research School of the Leiden and Delft Universities.
Graphical 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).
