Chiral lanthanide complexes: coordination chemistry, spectroscopy, and catalysis.
Stacey D Bennett1, Bryony A Core, Matthew P Blake
1School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, UK. WardBD@Cardiff.ac.uk.
Dalton Transactions (Cambridge, England : 2003)
|March 1, 2014
Summary
This study introduces novel lanthanide complexes with chiral bis(oxazolinylphenyl)amide (BOPA) ligands, demonstrating their potential in catalysis. These complexes show promise for applications in hydroamination and ring-opening polymerization reactions.
Area of Science:
- Organometallic Chemistry
- Lanthanide Chemistry
- Catalysis
Background:
- The field of lanthanide complexes with chiral oxazoline ligands for catalysis is underdeveloped compared to lanthanide triflates.
- Organometallic lanthanide complexes are valuable Lewis acid catalysts.
Purpose of the Study:
- To explore the coordination chemistry of bis(oxazolinylphenyl)amide (BOPA) ligands with lanthanide alkyl and amide co-ligands.
- To characterize the structural, spectroscopic, and photophysical properties of these novel complexes.
- To evaluate their catalytic activity in hydroamination/cyclisation and ring-opening polymerization.
Main Methods:
- Synthesis and characterization of lanthanide complexes with BOPA ligands (Ln = Y, La, Pr, Nd, Sm).
- Structural and spectroscopic analysis, including luminescence spectroscopy.
- Density functional theory (DFT) calculations.
- Catalytic testing in hydroamination/cyclisation of aminoalkenes and ring-opening polymerization of rac-lactide.
Main Results:
- Successful synthesis and characterization of novel lanthanide-BOPA complexes.
- Detailed structural and spectroscopic data, including photophysical properties.
- Demonstrated catalytic activity in hydroamination/cyclisation and ring-opening polymerization of rac-lactide.
Conclusions:
- The study expands the underdeveloped area of lanthanide complexes with chiral oxazoline ligands.
- Lanthanide-BOPA complexes exhibit interesting coordination chemistry and photophysical properties.
- These complexes show potential as catalysts for important organic transformations.
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