Which pair of isomers illustrates the concept of ionisation isomers?
Answer & explanation
Correct answer: option 2
[CoCl(NH3)5]SO4 and [Co(SO4)(NH3)5]Cl are ionisation isomers as they give different ions in solution.
[CoCl(NH3)5]SO4 → [CoCl(NH3)5]2+ + SO42-
[Co(SO4)(NH3)5]Cl → [Co(SO4)(NH3)5]+ + Cl-