Directing Protons to the Dioxygen Ligand of a Ruthenium(II) Complex with Pendent Amines in the Second Coordination Sphere

Directing Protons to the Dioxygen Ligand of a Ruthenium(II) Complex with Pendent Amines in the Second Coordination Sphere

A side-on Ru–O₂ complex with pendent amines in the ligand backbone has been synthesized to model proton delivery in O₂ reduction (see scheme and structure; red O, purple Ru, blue N, yellow P). Protonation occurs at the amine near the O₂ ligand, forming a hydrogen bond between the ammonium ion and th...

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Veröffentlicht in:Angewandte Chemie (International ed.) 2011-09, Vol.50 (46)
Hauptverfasser: Tronic, Tristan A., DuBois, M. Rakowski, Kaminsky, Werner, Coggins, Michael K., Liu, Tianbiao, Mayer, James M.
Format: Artikel
Sprache:eng
Schlagworte:
catalysis (homogeneous), catalysis (heterogeneous), solar (fuels), bio-inspired, energy storage (including batteries and capacitors), hydrogen and fuel cells, charge transport, materials and chemistry by design, synthesis (novel materials)
dioxygen ligands
hydrogen bonding
INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
O-O activation
proton-coupled electron transfer
protonation
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Zusammenfassung:A side-on Ru–O₂ complex with pendent amines in the ligand backbone has been synthesized to model proton delivery in O₂ reduction (see scheme and structure; red O, purple Ru, blue N, yellow P). Protonation occurs at the amine near the O₂ ligand, forming a hydrogen bond between the ammonium ion and the O₂ ligand, leading to a small increase in O-O bond length.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201105266