Recent Development in the Synthesis and Catalytic Application of Iridacycles

Area of Science:

• Organometallic Chemistry
• Catalysis

Background:

• Cyclometallated complexes are versatile and widely applied.
• Half-sandwich pentamethylcyclopentadienyl iridium(III) (Cp*Ir(III)) complexes represent a significant class of these compounds.

Purpose of the Study:

• To review the progress in synthesis and catalytic applications of Cp*Ir(III) complexes since 2017.
• To cover complexes with conventional C,N chelates and novel metallocene/carbene-derived ligands.

Main Methods:

• Literature review of studies published since 2017.
• Analysis of synthetic methodologies for Cp*Ir(III) complexes.
• Overview of catalytic applications.

Main Results:

• Recent advancements in synthesizing Cp*Ir(III) complexes with various C,N and C,C ligands.
• Demonstrated utility of these complexes in diverse catalytic transformations.
• Successful application in asymmetric hydrogenation, transfer hydrogenation, hydrosilylation, and dehydrogenation.

Conclusions:

• Cp*Ir(III) complexes continue to show significant progress in synthesis and catalytic applications.
• The development of novel ligands expands their catalytic potential.
• These complexes are valuable tools for various catalytic reactions.