Is ethylenediaminetetraacetate a bidentate ligand?
Bidentate ligands have two donor atoms which allow them to bind to a central metal atom or ion at two points. Common examples of bidentate ligands are ethylenediamine (en), and the oxalate ion (ox).
What type of ligand is EDTA?
hexadentate ligand
A hexadentate ligand in coordination chemistry is a ligand that combines with a central metal atom with six bonds. One example of a hexadentate ligand that can form complexes with soft metal ions is TPEN. A commercially important hexadentate ligand is EDTA.
Why is EDTA called a hexadentate ligand?
Hexadentate ligand is one in which there are six donor atoms . As we can see from the structure that it has six donor atoms , that is , two nitrogen and four oxygen atoms ( of the carboxylic acid groups ) capable of bonding to the metal atom . Hence it is a hexadentate ligand .
Which is example of hexadentate ligand?
Ethylene diamine tetra acetate ion [EDTA] is an example of hexadentate ligand.
How many coordination sites are there in ethylenediaminetetraacetate?
6
The total number of coordination sites in ethylenediaminetetraacetate is 6.
Is EDTA pentadentate ligand?
A number of metal-EDTA complexes have been reported to have the EDTA acting as a pentadentate ligand (only five sites on EDTA bind, one carboxylic group does NOT). A water molecule or another ligand is in the sixth site, so the complexes are still octahedral in geometry.
Is EDTA a multidentate?
EDTA is a multidentate ligand, which is able to attach to the central metal by up to six atoms (4 oxygen and 2 nitrogen atoms). EDTA has an overall 4- charge. Enthalpy: This is irrespective of what ligands are attached to the central metal.
What is the meaning of hexadentate ligand?
A ligand that has 6 lone pairs of electrons – all of which can form co-ordinate bonds with the same metal Ion.
What is meant by hexadentate ligand give one example how is such ligand useful for measuring hardness of water?
EDTA (ethylene diamine tetra acetate). It is used to measure hardness of water. It has six donor atoms. Coordination entity : A coordination entity constitutes a central atom/ion, usually of a metal, to which are attached a fixed number of other atoms or groups each of which is called a ligand.
What is ligand give an example of Tridentate and a hexadentate ligand?
Tridentate ligands have three atoms capable of binding to a central metal atom or ion. Molecules with four donor atoms are called tetradentate ligands; five donor atoms, pentadentate; and six donor atoms hexadentate. The image shown below of EDTA binding to a central metal atom is an example of a chelate.
How many coordinate sites are there in ligand EDTA?
The total number of coordination sites in ethylenediaminetetraacetate (EDTA4–) is. EDTA4– is hexadentate ligand. The total number of coordination sites in ethylenediaminetetraacetate is 6.