Question

The complexes $\left[Co\left(N{O}_2\right){\left(N{H}_3\right)}_5\right]{Cl}_2$ and $\left[Co\left(ONO\right){\left(N{H}_3\right)}_5\right]{Cl}_2$ are the examples of :

• A. Co-ordination isomerism
• B. Ionisation isomerism
• C. Geometrical isomerism
• D. Linkage isomerism

Answer 1

The correct option is D Linkage isomerism

Option (D) is correct.

The complexes $\left[Co\left(N{O}_2\right){\left(N{H}_3\right)}_5\right]{Cl}_2$ and $\left[Co\left(ONO\right){\left(N{H}_3\right)}_5\right]{Cl}_2$ are the examples of linkage isomerism.

Linkage isomerism occurs with ambidentate ligands. These ligands are capable of coordinating in more than one way. The best known cases involve the monodentate ligands $SC{N}^{-}/NC{S}^{-}$ and $N{O}_2^{-}/ON{O}^{-}$.