SEARCH Articles Figures Tables Carbonyl complexes ligands Carbonyl ligands Carbonyl mode Carbonyl stretch Carbonyl stretching Carbonyl stretching mode Carbonyl transition Carbonylation transition metal complexes Carbonyls, metal ligand Metal carbonyl complexes Metal complexes ligand Mode transitions Stretching carbonylic Stretching mode Transition ligand Transition metal carbonyl complexes Transition metal carbonyls Transition metal-ligand complex Transition metals ligands