S1 Supporting Information Proton-Coupled Oxidation of a Di-arylamine: Amido and Aminyl Radical Complexes of Ruthenium(II) Suman Kundu, † Debarpan Dutta, † Suvendu Maity, † Thomas Weyhermüller  and Prasanta Ghosh* ,† † Department of Chemistry, R. K. Mission Residential College, Narendrapur, Kolkata-700103, India  Max-Planck-Institut für Chemische Energiekonversion, Stiftstrasse 34-36, 45470 Mülheim an der Ruhr, Germany