Ncert Exercises & Solutions

Which of the following complexes is/are heteroleptic?

(a)	$\mathrm{CoNH}_{36}{ }^{3+}$	(b)	$\mathrm{Fe}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2^{+}$
(c)	$\operatorname{Mn}(\mathrm{CN})_6^{4-}$	(d)	$[\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2]$

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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(a)	\(\mathrm{CoNH}_{36}{ }^{3+}\)	(b)	\(\mathrm{Fe}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2^{+}\)
(c)	\(\operatorname{Mn}(\mathrm{CN})_6^{4-}\)	(d)	\([\mathrm{Co}\left(\mathrm{NH}_3\right)_4 \mathrm{Cl}_2]\)