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Direct NMR Evidence for the Presence of Mobile Surface Hydrides on Ruthenium Nanoparticles

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Surface-reactive metal colloids: Ruthenium nanoparticles are able to accommodate hydrogen atoms at, or immediately below, their surface, as shown by a combination of liquid, gas-phase and solid-state NMR techniques. The hydrogen atoms are mobile on the ruthenium particles—and reactive—which leads to fast hydrogen–deuterium exchange with the ligands (see graphic) even in the solid state.

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