Which of the following types of isomerism is exhibited by $$…
Which of the following types of isomerism is exhibited by
$$
\left[\mathrm{Co}\left(\mathrm{NH}_3ight)_5\left(\mathrm{NO}_2ight)ight]\left(\mathrm{NO}_3ight)_2
$$
i. Optical ii. Linkage iii. Ionization
iv. Coordination
ii, iii only
i, ii, iii only
i, iii only
ii, iv only
Solution
No optical isomerism is exhibited by the given complex as there is a plane of symmetry.
Linkage isomers :-
$\left[\mathrm{Co}\left(\mathrm{NH}_3ight)_5\left(\mathrm{NO}_2ight)ight]^{2+}$ and $\left[\mathrm{Co}\left(\mathrm{NH}_3ight)_5(\mathrm{ONO})ight]^{2+}$
Ionization isomers:-
$\left[\mathrm{Co}\left(\mathrm{NH}_3ight)_5\left(\mathrm{NO}_2ight)ight]^{2+}$ and $\left[\mathrm{Co}\left(\mathrm{NH}_3ight)_5\left(\mathrm{NO}_3ight)ight]^{+}$
For coordination isomerism, both, cationic and anionic entities are required.