Understanding Structural Isomerism in Organoiridium Picolinamidate Complexes and its Consequences on Reactivity and Biological Properties.

ABSTRACT: Organoiridium picolinamidate complexes are promising for intracellular applications because of their biocompatibility, activity in living systems, and ease of derivatization. To shield their metal centers from inhibition by biological nucleophiles (e.g., glutathione), attempts were made to increase the steric bulk of the supporting N-(2,6-R₂-phenyl)picolinamidate ligand. It was found that when R = H (Ir1) or methyl (Ir2), the ligand adopts N,N'-coordination to iridium, whereas when R = isopropyl (Ir3) or phenyl (Ir4), N,O-coordination was observed. Based on experimental measurements and density functional theory calculations, it was revealed that the carbon chemical shift of the C(O)NR group can be used as a diagnostic hand

SUBMITTER: Nguyen HD 

PROVIDER: S-EPMC12302936 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature