Gold Tripyrrindione: Redox Chemistry and Reactivity with Dichloromethane.

ABSTRACT: The identification of ligands that stabilize Au(III) centers has led to the isolation of complexes for applications in catalysis, gold-based therapeutics, and functional materials. Herein, we report the coordination of gold by tripyrrin-1,14-dione, a linear tripyrrole with the scaffold of naturally occurring metabolites of porphyrin-based protein cofactors (e.g., heme). Tripyrrindione H₃TD2 binds Au(III) as a trianionic tridentate ligand to form square planar complex [Au(TD2)(H₂O)], which features an adventitious aqua ligand. Two reversible ligand-based oxidations of this complex allow access to the other known redox states of the tripyrrindione framework. Conversely, (spectro)electrochemical measurements and DFT analysis indicate that the reduction of the complex is

SUBMITTER: Curtis CJ 

PROVIDER: S-EPMC11583832 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature