polydentate

Examples of polydentate in the following topics:

• Chelating Agents

  • Chelation is the formation or presence of two or more separate coordinate bonds between a polydentate (multiple bonded) ligand and a single central atom.
  • Thus, proteins, polysaccharides, and polynucleic acids are excellent polydentate ligands for many metal ions.

• Coordination Number, Ligands, and Geometries

  • Ligands that bind via more than one atom are often termed polydentate or chelating.
  • A classic example of a polydentate ligand is the hexadentate chelating agent EDTA, which is able to bond through six sites, completely surrounding some metals.
  • There are several types of polydentate ligands which can be characterized based on how they interact with the central ion.

• Reactions of Coordination Compounds

  • Polydentate (multiple bonded) ligands consist of several donor atoms, several of which are bound to the central atom or ion.

• Naming Coordination Compounds

  • Polydentate ligands (e.g., ethylenediamine, oxalate) receive bis-, tris-, tetrakis-, etc.