Catalytic Nitrogen-to-Ammonia Conversion by Osmium and

Communication Cite This: J. Am. Chem. Soc. XXXX, XXX, XXX-XXX

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Catalytic Nitrogen-to-Ammonia Conversion by Osmium and Ruthenium Complexes Javier Fajardo, Jr. and Jonas C. Peters* Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States S Supporting Information *

Despite these advances, there remain no examples of synthetic Ru or Os complexes that demonstrate stepwise protonation of M-N2 to generate M-NxHy species, or that catalyze N2RR.12 The study of a homologous, isostructural series of complexes (Fe, Ru, Os) will help to delineate important factors for N2RR catalyst design. A limitation with respect to achieving N2RR catalysis by either Ru or Os is that low-valent redox states (