Ncert Exercises & Solutions

Which of the following complexes is/are heteroleptic?

(a) ${[C o {(N H_{3})}_{6}]}^{3 +}$

$(b) {[Fe {({NH}_{3})}_{4} {Cl}_{2}]}^{+}$

$(c) {[Mn {(CN)}_{6}]}^{4 -}$

$(d) [[Co {({NH}_{3})}_{4} {Cl}_{2}]]$

Choose the correct option:
1. (a, b)
2. (b, c)
3. (c, d)
4. (b, d)

Heteroleptic coordination complexes that contain more than one type of ligands.

eg, ${[Fe {({NH}_{3})}_{4} {Cl}_{2}]}^{+}$ contain NH, and Cl as a ligand is a heteroleptic complex. Similarly, $[Co {({NH}_{3})}_{4} {Cl}_{2}]$ contain ${N H}_{3}$ and Cl as ligand is also a heteroleptic complex

Hence, options (b) and (d) are correct choices.

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