Water-oxidation half-reaction (2H2O → O2 + 4H+ + 4e-) is a critical reaction that can be driven by a sustainable energy source (e.g. solar or wind) and be coupled with a chemical fuel making reaction which stores the released electrons and protons from water (e.g. H2 or methanol). The use of a molecular water-oxidation catalysts (WOC) allows the rationale design of redox active metal centers and provides a better understanding of their structure-activity relationship. In this work, a ruthenium complex bearing a doubly deprotonated N,N′-bis(aryl)-2,6-pyridinedicarboxamides ligand which contains a water molecule in its primary coordination sphere was characterized by single-crystal X-ray diffraction. Further spectroscopic experimental data and pH-dependent electrochemical studies reveal its water-oxidation reactivity. Emphasis on mechanistic details for O2 formation of this complex will be addressed.

Investigation of water-oxidation using a ruthenium carboxamide complex bearing a vacant coordination site

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.