[RuII(tpy)(bpy)Cl]+-Catalyzed reduction of carbon dioxide. Mechanistic insights by carbon-13 kinetic isotope effects.

In this work, we examine the use of competitive 13C kinetic isotope effects (13C KIEs) on CO2 reduction reactions that produce CO and formic acid as a means to formulate reaction mechanisms. The findings reported here mark a further advancement in the combined 13C KIE measurements and theoretical calculations methodology for probing CO2 conversion reactions.