NEETChemistryCoordination Compounds
Which of the following coordination complexes can exhibit linkage isomerism?
Options
- A[Co(en)₃]Cl₃
- B[Pt(NH₃)₂Cl₂]
- C[Co(NH₃)₅(NO₂)]Cl₂
- D[Cr(H₂O)₆]Cl₃
Correct answer
C. [Co(NH₃)₅(NO₂)]Cl₂
Step-by-step solution
Linkage isomerism arises in a coordination compound containing an ambidentate ligand. An ambidentate ligand can coordinate to the central metal ion through more than one type of donor atom. Among the given options, the nitrite ion ( NO₂^- ) in [Co(NH₃)₅(NO₂)]Cl₂ is an ambidentate ligand, as it can bind through either the nitrogen atom ( -NO₂ ) or the oxygen atom ( -ONO ). The other complexes contain only unidentate ( NH₃ , Cl^- , H₂O ) or bidentate ( en ) ligands that are not ambidentate. Thus, [Co(NH₃)₅(NO₂)]Cl₂ e