Diiodo(p-cymene)ruthenium dimer can be applied as a catalyst for many reactions such as ruthenium-catalyzed hydrogenation, preparation of Walphos-type ferrocenyl-aryl diphosphine ligands, ruthenium-catalyzed synthesis reactions, and enantioselective hydrogenation of ketones and olefins.A catalyst for many reactions such as ruthenium-catalyzed hydrogenation. Diiodo(p-cymene)ruthenium dimer can be applied as a catalyst for many reactions such as ruthenium-catalyzed hydrogenation, preparation of Walphos-type ferrocenyl-aryl diphosphine ligands, ruthenium-catalyzed synthesis reactions, and enantioselective hydrogenation of ketones and olefins. A catalyst for many reactions such as ruthenium-catalyzed hydrogenation. Product class M-C, Homogeneous Catalysts, Arene/Aryl Ligands Reaction type Hydrogenation, Asymmetric Reactions, Asymmetric Hydrogenation Chemical properties Chemical formula C 2 0 H 2 8 I 4 Ru 2 Empirical formula [Ru( p -cymene)I 2 ] 2 Molecular weight 978.20 Metal Ru Theoretical metal content 21 Physical state powder Color brown