Hello, reders welcome to “chemwhite.com” today I am going to explain about different ligands such as unidentate, didentate and ambidentate ligands.

lets get started,

What is unidentate ligands?

Molecules have only one donor atom is called unidentate ligands such as ammonia, water, and CO.

for examples,

Ammonia

ligands

this molecules have only one loan pair and only one donor atom (N). so we can say that ammonia molecules is unidentate ligands.

The negative ion or neutral molecules such as ammonia, water. this type of molecules have capability to manage only one donor atom, due to this reason, we can say, this is unidentate ligands.

Water

unidentate ligands

similarly, we can say that wate molecules have only one donor atom (O oxygen). Here, oxygen have two loan pair but it donate only one loan pair, this is the reason it is know as monodentate ligands or unidentate ligands.

Read MoreWhat are Ambident Nucleophiles explain with an examples?

Bidentate or Didentate ligands

Molecules have two donor atoms are called bidentate/ didentate ligands. such as ethylene diamine.

for examples,

Ethylene diamine

Bidentate or Didentate ligands

Due to structure of ethylene diamine, there are two donor atoms (both N) are present in this compound. so, we can say that this is bidentate ligands. it is clearly show in structure.

Ambidentate ligands

Ambidentate ligands is one type of ligands in which it can ligate through two different atoms is called ambidentate ligands.

for examples,

NO2,

CSN,

If we are talking about NO2- molecules in which this molecules can coordinate with nitrogen or with oxygen.

simillarly

If we are talking about CSN- ions, this type of molecules can also coordinate with sulphur and nitrogen atoms.

Types of ligands

1. Menodentate ligands/ Unidentate ligands.

2. Polydentate ligands

(a) Bidentate ligands

(b) Tridentate ligands

(c) Tetradentate ligands

(d) Pentadentate ligands

(e) Hexadentate ligands

1. Menodentate ligands/ unidentate ligands

It is define as, if molecules have only one donor atom, and only one donor atom present in molecules, this type of molecules is called menodentate ligands Or unidentate ligands.

for examples,

(a) NH3

(b) PH3

(c) CO

(d) NO

2. Polydentate ligands

Bidentate ligands – It is define as, If molecules have two donor atom or if two donor atom persent in this molecules. then this type of molecules is known as bidentate ligands. you can understand with help of example or chemical structure.

for examples,

(a) Carbonate ion

bidentate ligands

According to this structure, it is clear, there are two donor atom (both O) is persent in carbonate ion. If two donor atom are persent, due to this, it is bidentate ligands.

Tridentate ligands – It is define as, If molecules have three donor atom or if molecules have capability to reach three donor atom. then we can say that this type of molecules is tridentate ligands. you can understand with proper examples and chemical structure.

for examples,

(a) Diethylene tridiamine (dien)

tridentate ligands

Tetradentate ligands – It is define as, molecules have four donor atom. if four donor atom are persent in molecules then this type of molecules is known as tetradentate ligands.

for examples,

(a) Nitro acetate

tetradentate ligands

Pentadentate ligands – It is define as If molecules have 5 donor atom. this is called pentadentate ligands. if 5 donor atoms are persent in molecules then this is know as pentadentate ligands.

for examples

(a) Ethylene diamine tri acetate ion

Pentadentate ligands

Hexadentante ligands – It is define as, If 6 donor atom are persent in molecules then this is know as hexadentante ligands.

for best examples are,

(a) ethylene diamine tetra acetate ion

hexadentante ligands

1 Comment

Hairstyles VIP · May 5, 2022 at 5:56 am

Hello.This post was extremely motivating, especially because I was browsing for thoughts on this issue last Wednesday.

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