There are three main strategies for the activation of CO2. First the insertion of CO2 into M-X bonds (X = H, O, C),[1] second the coupling of CO2 with unsaturated hydrocarbons[2] and finally the photocatalytic reduction of CO2.[3] Using light to overcome the activation barrier of CO2 especially the last-mentioned strategy is desirable in terms of sustainability. The most active catalysts for this reaction are Re (I) catalysts. Via kinetic measurements it was shown by us that the overall kinetics of this reduction half cell reaction follows a monometallic pathway in general. However adjustment of the proximity of centers via synthesis of binuclear structures results in a binuclear mechanism which comes along with a great rate increasing effect.[4] Based on these structures our future goal is to develop a photocatalytic redoxsystem without sacrificial electron donors.

Utilization of CO<sub>2 </sub>via photoredox catalysis

244th National Meeting (2012)

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Utilization of CO2 via photoredox catalysis

Utilization of CO₂via photoredox catalysis