<i>meso</i> -Aryl substituents modify the electrochemical profile and palladium( <scp>ii</scp> ) coordination of redox-active tripyrrin ligands

The synthesis of meso -aryl 1,14-dimethoxytripyrrin and tripyrrin-1,14-dione allows isolation of palladium( ii ) complexes presenting aliphatic C–H bond activation reactivity and multiple ligand-based redox processes.