Question

Explain ionisation isomerism and coordination isomerism in coordination compounds with examples.

Hint:

Ionisation isomerism changes the counter-ion, while coordination isomerism swaps ligands between metal centers.

Answer 1

Step 1: Ionisation Isomerism:
Occurs when compounds produce different ions in solution. Example: \[ [Co(NH_3)_5SO_4]Br \text{ and } [Co(NH_3)_5Br]SO_4 \] Step 2: Coordination Isomerism:
Occurs when the ligands exchange between cation and anion parts. Example: \[ [Cr(NH_3)_6][Co(CN)_6] \text{ and } [Co(NH_3)_6][Cr(CN)_6] \]