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Synthesis of a Water-soluble Metal–Organic Complex Array
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Discrete μ4‑Oxido Mn(II) Clusters with Controlled Nuclearity: On-Demand Synthesis, Molecular and Self-Assembled
Dominik Jabłoński1, Maciej Jacyna1, Michał Terlecki1
1Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
ACS Omega
|October 13, 2025
Summary
Researchers developed a new method for synthesizing homovalent manganese-oxido clusters exclusively with Mn(II) centers. This breakthrough allows for controlled formation of tetranuclear or octanuclear clusters by adjusting organic ligands, advancing functional materials science.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Supramolecular Chemistry
Background:
- Heterovalent manganese-oxido clusters are key building blocks for functional materials like molecular magnets and MOFs.
- Synthesizing homovalent Mn(II) oxido clusters presents a significant challenge compared to established Mn(II)/Mn(III) clusters.
Purpose of the Study:
- To develop a rational synthesis for homovalent manganese-oxido clusters exclusively containing Mn(II) centers.
- To achieve on-demand synthesis of specific cluster nuclearities by tuning ligand properties.
Main Methods:
- Employed a transmetalation/hydrolysis approach for cluster synthesis.
- Utilized N,N'- and O,N-bidentate organic ligands to control cluster nuclearity.
- Analyzed supramolecular structures and compared with related zinc, cobalt, and iron clusters.
Main Results:
- Successfully synthesized homovalent [Mn4(μ4-O)-L6]-type clusters.
- Demonstrated control over nuclearity, forming tetranuclear or octanuclear clusters based on ligand choice.
- Gained insights into factors governing self-assembly and solvation in manganese oxido clusters.
Conclusions:
- The developed method enables precise synthesis of homovalent Mn(II) oxido clusters.
- Ligand design is crucial for controlling cluster nuclearity and supramolecular assembly.
- This work provides a foundation for designing novel manganese-based functional materials.
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