SEARCH Articles Figures Tables A Journey in Metal-Ligand Multiple Bond Chemistry Bidentate Ligands Containing a Heteroatom-Phosphorus Bond Complexes Supported by Bidentate Ligands with a Delocalized Bond System Hydrogen Atom Abstraction from a Bonded Carbon Ligands Ligand-to-metal a bonding Metal-ligand a bonds Related a-Bonded Ligands