How Do Proximal Hydroxy or Methoxy Groups on the Bidentate Ligand Affect [(2,2′;6′,2"-Terpyridine)Ru(N,N)X] Water-Oxidation Catalysts? Synthesis, Characterization, and Reactivity at Acidic and Near-Neutral pH (pages 676–689)
David C. Marelius, Salome Bhagan, David J. Charboneau, Kristine M. Schroeder, Jayneil M. Kamdar, Amanda R. McGettigan, Benjamin J. Freeman, Curtis E. Moore, Arnold L. Rheingold, Andrew L. Cooksy, Diane K. Smith, Jared J. Paul, Elizabeth T. Papish and Douglas B. Grotjahn
Article first published online: 18 OCT 2013 | DOI: 10.1002/ejic.201300826
Oxygenated substituents (protic OH and aprotic OMe) are compared at positions near to (figure, left) and far from (figure, right) the active site of water-oxidation catalysts. Facile aquation promoted by a proximal substituent, hydrogen bonding, and pH-sensitive redox and UV/Vis spectra are seen, along with either enhanced or reduced catalytic rates.