Mononuclear Lanthanide(III) Complexes for Efficient Conversion of CO2 to Cyclic Carbonates.
Kajal1, Sudipta Chakraborty1, Hari Pada Nayek1
1Department of Chemistry & Chemical Biology, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad, Jharkhand, India.
Chemistry, an Asian Journal
|June 14, 2026
Summary
Two new mononuclear lanthanide compounds were synthesized and show catalytic activity in converting epoxides and carbon dioxide into cyclic carbonates. The study also explored reaction mechanisms and substituent effects.
Area of Science:
- Coordination Chemistry
- Catalysis
- Organic Synthesis
Background:
- Lanthanide complexes are explored for catalytic applications.
- Cyclic carbonates are valuable chemical intermediates.
- Efficient synthesis of cyclic carbonates from epoxides and CO2 is a key challenge.
Purpose of the Study:
- Synthesize novel mononuclear lanthanide(III) compounds.
- Evaluate their catalytic performance in cycloaddition reactions.
- Investigate reaction mechanisms and substituent effects.
Main Methods:
- Synthesis of [Dy(HL)3]·MeOH·H2O and [Er(HL)3]·[Et3NCl]·H2O using lanthanide chlorides and a polydentate ligand.
- Characterization via FT-IR, elemental analysis, and single-crystal X-ray diffraction (SC-XRD).
- Catalytic testing in the cycloaddition of epoxides with CO2 under solvent-free conditions.
Main Results:
- Successful synthesis and structural elucidation of two mononuclear lanthanide(III) compounds.
- Demonstrated catalytic effectiveness in the cycloaddition of epoxides and CO2 to cyclic carbonates with good yields.
- Investigation of substituent effects and proposal of a reaction mechanism.
Conclusions:
- The synthesized mononuclear lanthanide compounds are effective catalysts for cyclic carbonate synthesis.
- The study provides insights into the reaction mechanism and the influence of epoxide substituents.
- This work contributes to the development of efficient catalytic systems for valuable chemical transformations.
Keywords:
CO2 conversioncatalysiscyclic carbonatesmononuclear lanthanide(III) compoundx‐ray diffractionMore Related Videos
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