SEARCH Articles Figures Tables First-Generation Ruthenium Indenylidene Catalysts Bearing Two Phosphine Ligands First-Generation Ruthenium Indenylidene Catalysts Bearing a Bidentate Dichalcogenoimidodiphosphinate Ligand First-Generation Ruthenium Indenylidene Catalysts Bearing a Bidentate Schiff Base Ligand Indenylidene Ruthenium chelating indenylidene ligand