Molecular bismuth(III) monocations: structure, bonding, reactivity, and catalysis.

Area of Science:

• Inorganic Chemistry
• Organometallic Chemistry
• Catalysis

Background:

• Cationic bismuth(III) species, [BiR2]+, possess a vacant p-orbital and an occupied s-orbital.
• These orbitals facilitate sigma and pi bonding, redox chemistry, and Lewis acidity.

Purpose of the Study:

• To summarize fundamental properties of cationic bismuth compounds.
• To highlight advancements in understanding their Lewis acidity and reactivity.
• To showcase applications in stoichometric and catalytic reactions.

Main Methods:

• Synthesis and characterization of well-defined molecular cationic bismuth compounds.
• Investigation of their coordination chemistry and electronic properties.
• Evaluation of their performance in various chemical transformations.

Main Results:

• Tunable properties of [BiR2]+ species by varying ligands and counteranions.
• Demonstrated utility in challenging reactions like CH and small molecule activation.
• Successful application in Lewis acid catalysis, radical polymerization, and Bi(III)/Bi(V) redox catalysis.

Conclusions:

• Cationic bismuth compounds are versatile reagents with tunable properties.
• Their unique electronic structure enables diverse applications in synthesis and catalysis.
• Further exploration promises new frontiers in bismuth chemistry.