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Updated: Sep 11, 2025
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Author Spotlight: Magnetometric Characterization of Intermediates in the Solid-State Electrochemistry of Redox-Active Metal-Organic Frameworks
Published on: June 9, 2023
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Layered Rare-Earth Hydroxides Intercalated with Metal Complexes: Copper Malonates Make a Difference.
Ekaterina D Sheichenko1,2, Alexey D Yapryntsev1, Natalia V Gogoleva1
1Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia.
Inorganic Chemistry
|August 13, 2025
Summary
Malonate ligands enable intercalation of copper complexes into rare-earth hydroxides. This method allows for controlled synthesis of novel hybrid materials with tunable properties.
Area of Science:
- Materials Science
- Inorganic Chemistry
- Nanotechnology
Background:
- Layered rare-earth hydroxides (LREHs) are versatile host materials.
- Malonate ligands facilitate the intercalation of metal complexes into LREHs.
- Tuning coordination geometry and composition of intercalated complexes is crucial for material properties.
Purpose of the Study:
- To demonstrate the intercalation of copper(II) malonate complexes into LREHs.
- To explore the influence of malonate substituents on copper content.
- To develop a method for *in situ* metalation of intercalated complexes.
Main Methods:
- Anion-exchange reactions at room temperature.
- Synthesis and characterization of copper(II) malonate complexes.
- Density Functional Theory (DFT) calculations.
- Powder X-ray Diffraction (PXRD), SEM, EDX, IR, UV-Vis, and EPR spectroscopy.
Main Results:
- Successful intercalation of copper malonate complexes into Y, Eu, and Tb hydroxides.
- Copper content varied with malonate substituents, with dimethylmalonate yielding the highest.
- First-time intercalation of dimethyl- and benzylmalonate into layered yttrium hydroxide.
- *In situ* metalation yielded well-defined Cu2+ species without lattice disruption.
- DFT provided insights into copper complex structural arrangements.
Conclusions:
- Malonate ligands are effective for intercalating metal complexes into LREHs.
- The *in situ* metalation approach expands the range of accessible hybrid materials.
- The developed method allows for controlled synthesis of functionalized LREHs.
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