Utilizad este identificador para citar o enlazar este documento: http://hdl.handle.net/2072/226228

Dinuclear Cobalt Complexes of a Decadentate Ligand Scaffold: Hydrogen Evolution and Oxygen Reduction Catalysis
Di Giovanni, Carlo; Gimbert-Suriñach, Carolina; Nippe, Michael; Benet-Buchholz,Jordi; Long Jeffry .R.; Sala, Xavier; Llobet, Antoni

A new decadentate dinucleating ligand containing a pyridazine bridging group and pyridylic arms has been synthesized and characterized by analytical and spectroscopic techniques. Four new dinuclear cobalt complexes featuring this ligand have been prepared and thoroughly characterized both in the solid state (X-ray diffraction) and in solution (1D and 2D NMR spectroscopy, ESI-MS, and electrochemical techniques). The flexible but stable coordination environment provided by the ligand scaffold when coordinating Co in different oxidation states is shown to play a crucial role in the performance of the set of complexes when tested as catalysts for the photochemical hydrogen evolution reaction (HER) and chemical oxygen reduction reaction (ORR).


decadentate ligands
dicobalt complexes
oxygen reduction
peroxo bridges
proton reduction
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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