JEE Main · 2024 · 01 Feb 2024 · Shift 1 · Coordination Compounds

Which of the following complex is homoleptic?

(A) $[Ni (CN)_{4}]^{2 -}$ ✓ Correct
(B) $[Ni (NH_{3})_{2} Cl_{2}]$
(C) $[Fe (NH_{3})_{4} Cl_{2}]^{+}$
(D) $[Co (NH_{3})_{4} Cl_{2}]^{+}$

Answer: (A)

Solution

A homoleptic complex is one in which the central metal atom is bonded to only one type of ligand. In

[Ni(CN)_{4}]^{2 -}

, all four ligands are CN

^{-}

— homoleptic. The other three complexes each contain two different types of ligands (NH

_{3}

and Cl

^{-}

) — heteroleptic. So

[Ni(CN)_{4}]^{2 -}

is the homoleptic complex.

JEE Main · 2024 · 01 Feb 2024 · Shift 1 · Single correct option

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