[Co(NH3)5NO2]Cl2 and [Co(NH3)5ONO]Cl2 are related to each other as :a)geometrical isomersb)linkage isomersc)coordination isomersd)ionisation isomersCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

If an Ambidentate ligand is present such as CN and NO2 then they exbuits linkage isomerism

Answer

NO2 is an Ambidentate ligand ,ans if an ambidentate ligand is present ,then the isomerism is always an linkage isomerism....
Ambidentate ligands are...NO2,ONO,CN,NC ,NCS,SCN etc....
HOPE YOU UNDERSTAND..
THANK YOU....

Answer

Read the definition of all types of isomerism

Answer

Linkage isomers:

Linkage isomerism is a type of structural isomerism that occurs when a ligand can bond to the central metal ion through different atoms. In this case, we have two complexes: [Co(NH3)5NO2]Cl2 and [Co(NH3)5ONO]Cl2. The ligand NO2 can bond to the central metal ion either through the nitrogen or the oxygen atom. Similarly, the ligand ONO can bond to the central metal ion either through the oxygen or the nitrogen atom.

Difference in bonding:

The complex [Co(NH3)5NO2]Cl2 has the NO2 ligand bonded to the central metal ion through the nitrogen atom, while the complex [Co(NH3)5ONO]Cl2 has the ONO ligand bonded to the central metal ion through the oxygen atom. This difference in bonding is what distinguishes them as linkage isomers.

Effect on properties:

Linkage isomers exhibit different physical and chemical properties due to the different ligand bonding arrangements. For example, [Co(NH3)5NO2]Cl2 and [Co(NH3)5ONO]Cl2 may have different colors, solubilities, and reactivities.

Explanation of options:

a) Geometrical isomers: Geometrical isomers occur when there is restricted rotation around a bond, resulting in different spatial arrangements. This is not the case in the given complexes as the ligands can freely rotate around the coordination sphere.
c) Coordination isomers: Coordination isomers occur when the anion and cation in a complex exchange places. This is not the case in the given complexes as the coordination sphere remains the same.
d) Ionisation isomers: Ionisation isomers occur when the ligands and counterions in a complex exchange places. This is not the case in the given complexes as the counterion (Cl-) remains the same.

Therefore, the correct answer is option B, linkage isomers, as the complexes [Co(NH3)5NO2]Cl2 and [Co(NH3)5ONO]Cl2 are isomers that differ in the bonding arrangement of the ligands NO2 and ONO.

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