NEETChemistryCoordination Compounds
Which of the following coordination complexes can exhibit both linkage and ionization isomerism?
Options
- A[ Co ( NH ₃)₅ Br ] SO ₄
- B[ Pt ( NH ₃)₂( NO ₂) Cl ]
- C[ Co ( NH ₃)₆][ Cr ( C ₂ O ₄)₃]
- D[ Co ( NH ₃)₄( NO ₂) Cl ] Br
Correct answer
D. [ Co ( NH ₃)₄( NO ₂) Cl ] Br
Step-by-step solution
Linkage isomerism arises when an ambidentate ligand (such as NO ₂^- , SCN ^- , or CN ^- ) is present in the coordination sphere. Ionization isomerism occurs when a counter ion outside the coordination sphere can exchange places with a ligand inside the coordination sphere. - [ Co ( NH ₃)₅ Br ] SO ₄ exhibits only ionization isomerism (exchange of Br ^- and SO ₄²⁻ ). - [ Pt ( NH ₃)₂( NO ₂) Cl ] is a neutral complex and lacks a counter ion, so it exhibits only linkage isomerism. - [ Co ( NH ₃)₆][ Cr ( C ₂ O ₄)₃] exhib