What Role do Aromatic Rings Play in Homogeneous Catalysis?
In homogeneous catalysis, aromatic rings are often part of ligand frameworks that coordinate to metal centers. These ligand frameworks, such as those in [phosphine ligands]() or [N-heterocyclic carbenes](), are essential for tuning the electronic properties of the metal center. The π-accepting properties of aromatic rings can withdraw electron density from the metal, thereby modifying its reactivity. This is particularly important in processes like [hydrogenation]() and [cross-coupling reactions]().
