A Fluorescent Molecular Probe for the Detection of Hydrogen Based on Oxidative Addition Reactions with Crabtree-Type Hydrogenation Catalysts
M. Sc. Pavlo Kos
Organometallic Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 12, 64287 Darmstadt (Germany)
Search for more papers by this authorCorresponding Author
Prof. Dr. Herbert Plenio
Organometallic Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 12, 64287 Darmstadt (Germany)
Organometallic Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 12, 64287 Darmstadt (Germany)Search for more papers by this authorM. Sc. Pavlo Kos
Organometallic Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 12, 64287 Darmstadt (Germany)
Search for more papers by this authorCorresponding Author
Prof. Dr. Herbert Plenio
Organometallic Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 12, 64287 Darmstadt (Germany)
Organometallic Chemistry, Technische Universität Darmstadt, Alarich-Weiss-Strasse 12, 64287 Darmstadt (Germany)Search for more papers by this authorGraphical Abstract
A green light for hydrogen: The oxidative addition of H2 to a fluorophore-tagged IrI Crabtree-type complex leads to brightly fluorescent IrIII dihydride species. This fluorogenic reaction is useful for sensing hydrogen and for uncovering mechanistic details in hydrogenation reactions.
Abstract
A Crabtree-type IrI complex tagged with a fluorescent dye (bodipy) was synthesized. The oxidative addition of H2 converts the weakly fluorescent IrI complex (Φ=0.038) into a highly fluorescent IrIII species (Φ=0.51). This fluorogenic reaction can be utilized for the detection of H2 and to probe the oxidative addition step in the catalytic hydrogenation of olefins.
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