Related Experiment Video
Updated: Jun 28, 2026
10:52
Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
Published on: July 27, 2022
Infrared Spectroelectrochemical Insights into Rhenium-Based Supramolecular Assemblies for Electron Storage and
Sydney M Koehne1, Zachary J Mast1, Lydia R Weddle2
1Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.
Inorganic Chemistry
|June 26, 2026
Summary
Rhenium squares with pyridyl linkers show unique CO2 interactions after ligand reduction, differing from mononuclear complexes. This highlights electronic coupling
Area of Science:
- Supramolecular Chemistry
- Organometallic Chemistry
- Electrochemistry
Background:
- Supramolecular assemblies offer unique electronic properties.
- Rhenium complexes are known for their redox activity.
Purpose of the Study:
- To synthesize and investigate rhenium-based supramolecular squares.
- To understand the impact of ligand structure and electronic coupling on redox behavior.
- To explore interactions with carbon dioxide (CO2).
Main Methods:
- Synthesis of three supramolecular square assemblies with Re(CO)3Cl corners and pyridyl linkers.
- Infrared spectroelectrochemistry (IR-SEC) for studying redox processes.
Main Results:
- The length of the bridging ligand and electronic coupling significantly influence the reduction pathway.
- Rhenium squares interact with CO2 after ligand reduction, not requiring rhenium anion formation.
- This CO2 interaction mechanism differs from mononuclear rhenium complexes.
Conclusions:
- Electronic coupling in supramolecular systems can impart unique redox properties.
- Supramolecular architecture enables novel reactivity pathways, such as direct CO2 interaction.
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