A hexadentate ligand in coordination chemistry is a ligand that combines with a central metal atom with six bonds.[1] One example of a hexadentate ligand that can form complexes with soft metal ions is TPEN.[1] A commercially important hexadentate ligand is EDTA.
The denticity of hexadentate ligands is often denoted with the prefix κ6.
^ abTakeshita, Kenji; Ishida, Masaru; Kondo, Misako; Nakano, Yoshio; Seida, Yoshimi (2004). "Recovery of Noble Metals by Hexadentate Ligand TPEN and Acidic Extractant D2EHPA". Asian Pacific Confederation of Chemical Engineering Congress Program and Abstracts. 2004: 238. doi:10.11491/apcche.2004.0.238.0.