Which type of isomerism involves interchange of ligands between the complex cation and complex anion of a coordination compound?

Explanation

Coordination isomerism involves redistribution of ligands between the complex cation and complex anion of a coordination compound. A standard pair is [Co(NH₃)₆][Cr(CN)₆] and [Cr(NH₃)₆][Co(CN)₆]. Their overall composition is the same, but the ligands are coordinated to different metal centres.