Metal‐Coordinated Ligand Radical Species With Non‐innocent Ortho‐aminophenol Functionalities: Reactivity and Catalysis

Abstract This review article presents a comprehensive analysis of metal complexes featuring ortho‐aminophenol based non‐innocent ligands in various oxidation states, including dianion/ o ‐amidophenolate, monoanion/ o ‐iminosemiquinonato, and o ‐iminoquinonato forms. We focus extensively on the reactivity and catalytic properties of these metal complexes, offering insights into their potential applications and behavior in different chemical environments. The ligands are meticulously categorized based on their denticity, providing a clear framework for understanding their coordination chemistry. Correspondingly, the metal complexes are systematically organized according to the sequence of ligands, ensuring a coherent and logical presentation of the data. The structural approach not only highlights the intricate relationships between ligands and metal centers but also facilitates a deeper understanding of their roles in various catalytic processes.