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. For example, EDTA or ethylenediaminotetracetic acid is a hexadentate ligand of calcium ion.
POLYDENTATE (CHELATING AGENT)
Meaning of POLYDENTATE (CHELATING AGENT) in English
General chemistry English glossary. Английский глоссарий общей химии. 2012