Which of the following complex is homoleptic?
- [Ni(NH3)2Cl2]
- [Co(NH3)4Cl2]+
- [Fe(NH3)4Cl2]+
- [Ni(CN)4]2-
Answer
(4) [Ni(CN)4]2-
Solution
Homoleptic: metal bound to only one kind of ligand; heteroleptic: more than one kind.
(A), (B), (C): ligands NH3 and Cl- (two kinds) ⇒ heteroleptic
(D): only CN- ⇒ (D) is homoleptic
Answer: (4)