Stereocontrol of Metal-Centred Chirality in Rhodium(III) and Ruthenium(II) Complexes with N₂N'P Ligand

Area of Science:

• Coordination chemistry
• Organometallic chemistry
• Catalysis

Background:

• Tetradentate ligands are crucial in stabilizing metal complexes.
• Understanding metal-ligand interactions is key to developing new catalysts.
• Chloride ligand lability influences the reactivity of metal complexes.

Purpose of the Study:

• Synthesize novel Rh(III) and Ru(II) complexes using a tetradentate ligand.
• Investigate the reactivity and chloride abstraction of these metal complexes.
• Explore the potential of these complexes in catalysis and further chemical applications.

Main Methods:

• Synthesis of Rh(III) and Ru(II) complexes with a tetradentate N2N'P ligand.
• Selective abstraction of chloride ligands using silver hexafluorantimonate (AgSbF6).
• Characterization of synthesized complexes, including polymetallic and mixed-valence species.

Main Results:

• One diastereomer was detected for both Rh(III) and Ru(II) complexes.
• Ruthenium complexes showed higher reactivity in chloride abstraction compared to rhodium complexes.
• Polymetallic and mixed-valence complexes were successfully synthesized, demonstrating self-recognition and stability.

Conclusions:

• Significant differences in chloride lability exist between Rh(III) and Ru(II) complexes.
• The synthesized complexes show potential as precursors for catalysts.
• The study demonstrates the versatility of the tetradentate ligand in forming diverse metal architectures.