Question

Coordination isomerism is caused by the interchange of ligands between the

• A. $cis$ and $trans$ structure
• B. complex cation and complex anion
• C. inner sphere and outer sphere
• D. low oxidation and higher oxidation states

Answer 1

Answer: (B)

complex cation and complex anion

Co-ordination isomerism is caused by the interchange of ligands between cation and anion complexes.

Example: $\left[Cr\right(N{H}_3{)}_6\left]\right[Cr\left(Cl{)}_6\right]$ and $\left[Cr\right(N{H}_3{)}_{5}Cl\left]\right[Cr\left(Cl{)}_5\right(N{H}_3\left)\right].$