Stability and Reversible Oxidation of Sub‐Nanometric Cu₅ Metal Clusters: Integrated Experimental Study and Theoretical Modeling

Bare clusters of five Cu atoms, synthesized electrochemically, display remarkable oxidation stability on highly oriented pyrolytic graphite. They exhibit reversible O2 adsorption, transitioning between various states with changes in temperature and pressure. In-situ XPS XANES spectroscopy experiments, along theoretical characterizations Cu5–(O2)n complexes, provide direct evidence the Cu5 clusters’ stability. More information can be found Research Article by M. P. de Lara-Castells, F. G. Requejo, A. López-Quintela co-workers (DOI: 10.1002/chem.202301517).