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The Synthesis, Characterization and Reactivity of a Series of Ruthenium N-triphosPh Complexes
Published on: April 10, 2015
Flexible kappa4-PNN'O-tetradentate ligands: synthesis, complexation and structural studies
Sean E Durran1, Mark R J Elsegood, Shelly R Hammond
1Department of Chemistry, Loughborough University, Loughborough, UK LE11 3TU.
Dalton Transactions (Cambridge, England : 2003)
|June 26, 2010
Summary
New PNN'O-tetradentate ligands were synthesized and complexed with gold, platinum, palladium, and nickel. These ligands exhibit diverse coordination modes, including kappa(1)-P, kappa(2)-P,N, kappa(3)-PNN
Area of Science:
- Coordination Chemistry
- Organometallic Chemistry
- Synthetic Chemistry
Background:
- Development of novel ligands is crucial for advancing coordination chemistry and catalysis.
- PNN'O-tetradentate ligands offer versatile coordination possibilities due to their multiple donor atoms.
- Schiff base condensation is a common method for synthesizing multidentate ligands.
Purpose of the Study:
- To synthesize novel air-stable PNN'O-tetradentate ligands.
- To investigate the coordination behavior of these ligands with various metal precursors (Au, Pt, Pd, Ni).
- To characterize the resulting metal complexes and explore their structural diversity.
Main Methods:
- Synthesis of PNN'O-tetradentate ligands via Schiff base condensation.
- Complexation reactions with gold, platinum, palladium, and nickel precursors.
- Characterization of ligands and complexes using multinuclear NMR, FT-IR, mass spectrometry, microanalysis, and single-crystal X-ray diffraction.
Main Results:
- Successful synthesis of four new PNN'O-tetradentate ligands (3a-3d).
- Formation of diverse metal complexes with varying coordination modes (kappa(1)-P, kappa(2)-P,N, kappa(3)-PNN', kappa(4)-PNN'O).
- Isolation and characterization of gold, platinum, palladium, and nickel complexes, including neutral, cationic, and monoanionic species.
- Structural elucidation of key complexes through single-crystal X-ray studies.
Conclusions:
- The synthesized PNN'O-tetradentate ligands are versatile building blocks for coordination chemistry.
- These ligands can adopt multiple coordination modes depending on the metal center and reaction conditions.
- The study provides a foundation for exploring the catalytic and material properties of these novel metal complexes.
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