Polydentate Ligand
A ligand that has more than one atom that coordinates directly to the central atom in a complex.
Polydentate ligands are called chelating agents when two or more coordinating atoms are attached to the same metal ion in a complex.
Example: EDTA or ethylenediaminotetracetic acid is a hexadentate ligand of calcium ion.
See also: Ligand.
Subjects: Chemistry