What is dentate in chemistry?
Some atoms cannot form the maximum possible number of bonds a ligand could make. In that case one or more binding sites of the ligand are unused. Such sites can be used to form a bond with another chemical species. Bidentate (also called didentate) ligands bind with two atoms, an example being ethylenediamine.
Which of the following is an example of a dentate ligand?
Common examples of bidentate ligands are ethylenediamine (en), and the oxalate ion (ox). Shown below is a diagram of ethylenediamine: the nitrogen (blue) atoms on the edges each have two free electrons that can be used to bond to a central metal atom or ion.
What is a ligand simple definition?
Definition of ligand : a group, ion, or molecule coordinated to a central atom or molecule in a complex.
What are Unidentate and bidentate ligands?
(i) Unidentate The negative ion or neutral molecule having only one donor atom is called unidentate ligand e.g., (ii) Bidentate (or didentate) The ions or molecules having two donor. atoms are called bidentate ligands.
What type of ligand is EDTA?
hexadentate ligand
EDTA4- forms very stable complexes with most of the transition metals. This hexadentate ligand forms very stable complexes (usually octahedral structures) with most of the transition metals. The donor atoms in EDTA4- are the two N atoms, and the four, negatively charged O atoms.
What is chelate and chelating ligands?
Ligands with two or more points of attachment to metal atoms are called chelating ligands, and the compounds they make are called chelates, a name derived from the Greek word khele, or claw of a crab. Non-chelating ligands such as ammonia (NH3) are monodentate, with one point of attachment (one tooth).
What is chelate called?
chelate, any of a class of coordination or complex compounds consisting of a central metal atom attached to a large molecule, called a ligand, in a cyclic or ring structure.
What are chelating ligands and chelates?
What is the difference between bidentate and ambidentate ligand?
The ambidentate ligands have two donor sites but only one of the two atoms co-ordinate their lone pair at any given instant. Ex: in NO2–, the donor atom is nitrogen whereas in ONO-, the donor atom is oxygen.