What Role Does 1,2-Bis(diphenylphosphino)ethane Play in Metal-Catalyzed Carbonylation? Carbonylation uses carbon monoxide to add a carbonyl group to a molecule, which helps chemists build starting blocks for further synthesis. The outcome depends on more than the starting material. The metal catalyst, ligand, solvent, temperature, and pressure all shape the reaction. 1,2-Bis(diphenylphosphino)ethane, often shortened to DPPE, is a bidentate phosphine ligand that has been studied in several transition-metal systems. Knowing what it does helps researchers read published results and decide whether a reported catalyst system fits their own research question. read more : https://penzu.com/public/dd301dd928ad7908