X‐Ray Structures of Copper(II) and Nickel(II) Radical Salen Complexes: The 
Preference of Galactose Oxidase for Copper(II)

Orio, Maylis; Jarjayes, Olivier; Kanso, Hussein; Philouze, Christian; Neese, Frank; Thomas, Fabrice

doi:10.1002/anie.201001040

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X‐Ray Structures of Copper(II) and Nickel(II) Radical Salen Complexes: The Preference of Galactose Oxidase for Copper(II)

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Orio, M., Jarjayes, O., Kanso, H., Philouze, C., Neese, F., & Thomas, F. (2010). X‐Ray Structures of Copper(II) and Nickel(II) Radical Salen Complexes: The Preference of Galactose Oxidase for Copper(II). Angewandte Chemie International Edition, 49(29), 4989-4992. doi:10.1002/anie.201001040.

Cite as: https://hdl.handle.net/21.11116/0000-0008-0FA5-E

Abstract

Copper or nickel? The depicted Cu^II salen complex, an active‐site model of galactose oxidase (GO), is a localized radical in the solid state with a quinoid distribution of bond lengths in one ring. While the ligand‐radical structure is not metal‐dependent, the composition of the radical SOMO is. This feature may explain the much lower reactivity of the Ni complex and nature's preference for a Cu^II center in GO.