First slide

Structural isomerism

Question

The complex which exhibits linkage isomerism is

Moderate

A

$[Co {({NH}_{3})}_{5} ONO] Cl$
B

$[Cr {(H_{2} O)}_{6}] {Cl}_{3}$
C

$[Co {(en)}_{2} {Cl}_{2}] Br$
D

$[Co {(en)}_{3}] {Cl}_{3}$

Solution

The essential condition for a complex to exhibit linkage isomerism is,
the presence of ambidente ligand like ${ONO}^{-}, {SCN}^{-}, {CN}^{-};$
$[Co {({NH}_{3})}_{5} ONO] Cl and [Co {({NH}_{3})}_{5} {NO}_{2}] Cl$ are linkage isomers;

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