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05:47
Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts
Published on: August 7, 2018
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High-Valent Manganese Corroles and the First Perhalogenated Metallocorrole Catalyst
Galina Golubkov1, Jesper Bendix2, Harry B Gray2
1Department of Chemistry and Institute of Catalysis Science and Technology Technion-Israel Institute of Technology Haifa 32000 (Israel) Fax: (+972) 4-8233735.
Angewandte Chemie (International Ed. in English)
|May 2, 2018
Summary
Pyrrole-based corrole ligands offer a promising alternative to porphyrin systems. Manganese corroles demonstrate metal-based redox chemistry and significant catalytic activity in oxygenation reactions.
Area of Science:
- Organic Chemistry
- Catalysis
- Coordination Chemistry
Background:
- Porphyrin systems are widely used in various chemical applications.
- Pyrrole-based corrole ligands present a novel structural motif.
- Exploring alternatives to porphyrins is crucial for advancing catalytic technologies.
Purpose of the Study:
- To synthesize and characterize novel manganese corrole complexes.
- To investigate the redox properties of these manganese corroles.
- To evaluate the catalytic performance of manganese corroles in oxidation reactions.
Main Methods:
- Synthesis of pyrrole-based corrole ligands.
- Preparation and characterization of manganese corrole complexes (1-4).
- Electrochemical studies to determine redox behavior.
- Catalytic testing using styrene oxygenation with iodosylbenzene.
Main Results:
- Readily synthesized manganese corroles (1-4).
- Demonstrated metal-based redox chemistry, distinct from ligand-based processes.
- Manganese corrole 4 exhibited high catalytic activity in styrene oxygenation.
Conclusions:
- Pyrrole-based corroles are viable alternatives to porphyrins.
- Manganese corroles possess tunable redox properties.
- Manganese corrole 4 shows significant potential as an oxidation catalyst.
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