Direction to practical production of hydrogen by formic acid dehydrogenation with Cp*Ir complexes bearing imidazoline ligands
A Cp*Ir complex with a bidentate pyridyl imidazoline ligand achieved the evolution of 1.02 m3 of H2/CO2 gases by formic acid dehydrogenation without any additives or adjustments in the solution system. The pyridyl imidazoline moieties provided the optimum pH to be 1.7, resulting in high activity and stability even at very acidic conditions.