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H2 evolution from H2O via O-H oxidative addition across a 9,10-diboraanthracene
Jordan W Taylor1, W Hill Harman
1Department of Chemistry, University of California, Riverside, Riverside, CA 92521, USA. hill.harman@ucr.edu.
This study explores the water reactivity of gold-containing boroauride complexes. These complexes can facilitate hydrogen gas evolution from water, showcasing a novel synthetic cycle.
Area of Science:
- Organometallic Chemistry
- Inorganic Chemistry
- Catalysis
Background:
- Boroauride complexes featuring gold are novel compounds with potential catalytic applications.
- Understanding their reactivity with water is crucial for developing new chemical transformations.
Purpose of the Study:
- To investigate the water reactivity of a boroauride complex ([Au(B2P2)]) and its oxidized form (Au(B2P2)Cl).
- To explore the potential of these complexes in hydrogen gas evolution from water.
Main Methods:
- Synthesis and characterization of boroauride complexes.
- Reactions with water and other reagents under varying conditions.
- Variable temperature Nuclear Magnetic Resonance (NMR) spectroscopy to study reaction mechanisms.
Main Results:
- Au(B2P2)Cl is stable in water and forms a hydroxide complex.
- The reduced boroauride complex undergoes sequential reactions with water to yield a dihydroxide species.
- A synthetic cycle for H2 evolution from water was demonstrated, involving O-H oxidative addition.
Conclusions:
- Boroauride complexes exhibit interesting water reactivity.
- These complexes can be utilized in a catalytic cycle for hydrogen evolution from water.
- The findings open avenues for developing new gold-based catalysts for water splitting.
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